{"id":130,"date":"2025-10-31T00:25:51","date_gmt":"2025-10-31T00:25:51","guid":{"rendered":"https:\/\/vibromera.eu\/glossary\/g-grade\/"},"modified":"2026-06-08T04:12:22","modified_gmt":"2026-06-08T04:12:22","slug":"g-grade","status":"publish","type":"glossary","link":"https:\/\/vibromera.eu\/vi\/glossary\/g-grade\/","title":{"rendered":"C\u1ea5p \u0111\u1ed9 ch\u1ea5t l\u01b0\u1ee3ng c\u00e2n b\u1eb1ng (G-Grades) l\u00e0 g\u00ec?"},"content":{"rendered":"<style>\n:root {\n  --navy: #0a2540;\n  --navy-light: #1a3a5c;\n  --blue: #2563eb;\n  --blue-light: #3b82f6;\n  --blue-pale: #dbeafe;\n  --blue-ghost: #eff6ff;\n  --beige: #f5f0e8;\n  --beige-dark: #e8dfd3;\n  --beige-light: #faf7f2;\n  --white: #ffffff;\n  --text: #1e293b;\n  --text-secondary: #475569;\n  --text-muted: #94a3b8;\n  --border: #cbd5e1;\n  --border-light: #e2e8f0;\n  --success: #059669;\n  --success-light: #d1fae5;\n  --warning: #d97706;\n  --warning-light: #fef3c7;\n  --danger: #dc2626;\n  --danger-light: #fee2e2;\n  --shadow-sm: 0 1px 3px rgba(10,37,64,0.08);\n  --shadow-md: 0 4px 12px rgba(10,37,64,0.1);\n  --shadow-lg: 0 8px 30px rgba(10,37,64,0.12);\n  --radius: 12px;\n  --radius-sm: 8px;\n  --radius-lg: 16px;\n}<\/p>\n<p>* { margin: 0; padding: 0; box-sizing: border-box; }<\/p>\n<p>body {\n  font-family: 'Source Sans 3', sans-serif;\n  color: var(--text);\n  background: var(--beige-light);\n  min-width: 1200px;\n  line-height: 1.7;\n  font-size: 16px;\n  -webkit-font-smoothing: antialiased;\n}<\/p>\n<p>\/* ===== HERO ===== *\/\n.hero {\n  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-light) 50%, #234e7a 100%);\n  color: var(--white);\n  padding: 56px 0 48px;\n  position: relative;\n  overflow: hidden;\n}\n.hero::before {\n  content: '';\n  position: absolute; inset: 0;\n  background:\n    radial-gradient(circle at 15% 75%, rgba(37,99,235,0.15) 0%, transparent 50%),\n    radial-gradient(circle at 85% 25%, rgba(37,99,235,0.1) 0%, transparent 50%);\n  pointer-events: none;\n}\n.hero::after {\n  content: '';\n  position: absolute; inset: 0;\n  background: url(\"data:image\/svg+xml,%3Csvg width='40' height='40' viewBox='0 0 40 40' xmlns='http:\/\/www.w3.org\/2000\/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.025'%3E%3Ccircle cx='20' cy='20' r='2'\/%3E%3C\/g%3E%3C\/g%3E%3C\/svg%3E\");\n  pointer-events: none;\n}\n.hero-inner {\n  max-width: 1280px;\n  margin: 0 auto;\n  padding: 0 48px;\n  position: relative;\n  z-index: 1;\n}\n.hero h1 {\n  font-family: 'DM Serif Display', serif;\n  font-size: 46px;\n  font-weight: 400;\n  line-height: 1.15;\n  margin-bottom: 16px;\n  letter-spacing: -0.5px;\n}\n.hero h1 span { color: var(--blue-light); }\n.hero .subtitle {\n  font-size: 19px;\n  font-weight: 300;\n  color: rgba(255,255,255,0.78);\n  max-width: 800px;\n  line-height: 1.6;\n}\n.breadcrumb {\n  margin-bottom: 20px;\n  font-size: 14px;\n  color: rgba(255,255,255,0.5);\n}\n.breadcrumb a {\n  color: rgba(255,255,255,0.6);\n  text-decoration: none;\n}\n.breadcrumb a:hover { color: rgba(255,255,255,0.9); }<\/p>\n<p>\/* ===== QUICK NAV ===== *\/\n.quick-nav {\n  background: var(--white);\n  border-bottom: 1px solid var(--border-light);\n  position: sticky;\n  top: 0;\n  z-index: 100;\n  box-shadow: var(--shadow-sm);\n}\n.quick-nav-inner {\n  max-width: 1280px;\n  margin: 0 auto;\n  padding: 0 48px;\n  display: flex;\n  gap: 0;\n  overflow-x: auto;\n}\n.quick-nav a {\n  display: flex;\n  align-items: center;\n  gap: 6px;\n  padding: 14px 20px;\n  font-size: 14px;\n  font-weight: 500;\n  color: var(--text-secondary);\n  text-decoration: none;\n  white-space: nowrap;\n  border-bottom: 2px solid transparent;\n  transition: all 0.2s;\n}\n.quick-nav a:hover {\n  color: var(--blue);\n  border-bottom-color: var(--blue);\n  background: var(--blue-ghost);\n}<\/p>\n<p>\/* ===== CONTAINER ===== *\/\n.container {\n  max-width: 1280px;\n  margin: 0 auto;\n  padding: 0 48px;\n}<\/p>\n<p>\/* ===== SUMMARY DASHBOARD ===== *\/\n.summary-dashboard {\n  padding: 40px 0;\n  background: var(--white);\n  border-bottom: 1px solid var(--border-light);\n}\n.dashboard-grid {\n  display: grid;\n  grid-template-columns: 1fr 1fr;\n  gap: 32px;\n}<\/p>\n<p>\/* Calculator *\/\n.calc-panel {\n  background: var(--beige-light);\n  border: 1px solid var(--beige-dark);\n  border-radius: var(--radius-lg);\n  padding: 32px;\n  position: relative;\n  overflow: hidden;\n}\n.calc-panel::before {\n  content: '';\n  position: absolute;\n  top: 0; left: 0; right: 0;\n  height: 4px;\n  background: linear-gradient(90deg, var(--blue), var(--blue-light));\n}\n.panel-title {\n  font-family: 'DM Serif Display', serif;\n  font-size: 22px;\n  margin-bottom: 6px;\n  color: var(--navy);\n}\n.panel-subtitle {\n  font-size: 14px;\n  color: var(--text-muted);\n  margin-bottom: 24px;\n}\n.calc-form {\n  display: grid;\n  grid-template-columns: 1fr 1fr;\n  gap: 16px;\n}\n.form-group { display: flex; flex-direction: column; gap: 5px; }\n.form-group.full-width { grid-column: 1 \/ -1; }\n.form-group label {\n  font-size: 13px;\n  font-weight: 600;\n  color: var(--text-secondary);\n  text-transform: uppercase;\n  letter-spacing: 0.5px;\n}\n.form-group label .unit {\n  font-weight: 400;\n  text-transform: none;\n  color: var(--text-muted);\n}\n.form-group input, .form-group select {\n  padding: 10px 14px;\n  border: 1px solid var(--border);\n  border-radius: var(--radius-sm);\n  font-size: 15px;\n  font-family: 'JetBrains Mono', monospace;\n  background: var(--white);\n  color: var(--text);\n  transition: border-color 0.2s, box-shadow 0.2s;\n}\n.form-group input:focus, .form-group select:focus {\n  outline: none;\n  border-color: var(--blue);\n  box-shadow: 0 0 0 3px rgba(37,99,235,0.12);\n}\n.calc-btn {\n  grid-column: 1 \/ -1;\n  padding: 13px;\n  background: var(--blue);\n  color: var(--white);\n  border: none;\n  border-radius: var(--radius-sm);\n  font-size: 15px;\n  font-weight: 600;\n  font-family: 'Source Sans 3', sans-serif;\n  cursor: pointer;\n  transition: all 0.2s;\n  margin-top: 4px;\n}\n.calc-btn:hover {\n  background: var(--navy);\n  transform: translateY(-1px);\n  box-shadow: var(--shadow-md);\n}<\/p>\n<p>\/* Results *\/\n.results-panel {\n  background: var(--navy);\n  border-radius: var(--radius-lg);\n  padding: 32px;\n  color: var(--white);\n  position: relative;\n  overflow: hidden;\n}\n.results-panel::before {\n  content: '';\n  position: absolute; inset: 0;\n  background: radial-gradient(circle at 100% 0%, rgba(37,99,235,0.2) 0%, transparent 60%);\n  pointer-events: none;\n}\n.results-panel .panel-title { color: var(--white); }\n.results-panel .panel-subtitle { color: rgba(255,255,255,0.5); }<\/p>\n<p>.result-primary {\n  background: rgba(255,255,255,0.07);\n  border: 1px solid rgba(255,255,255,0.1);\n  border-radius: var(--radius);\n  padding: 24px;\n  text-align: center;\n  margin-bottom: 16px;\n  position: relative;\n  z-index: 1;\n}\n.result-primary .res-label {\n  font-size: 12px;\n  font-weight: 700;\n  text-transform: uppercase;\n  letter-spacing: 1px;\n  color: var(--blue-light);\n  margin-bottom: 8px;\n}\n.result-primary .res-value {\n  font-family: 'JetBrains Mono', monospace;\n  font-size: 42px;\n  font-weight: 700;\n  line-height: 1;\n  margin-bottom: 4px;\n}\n.result-primary .res-unit {\n  font-size: 16px;\n  color: rgba(255,255,255,0.5);\n}<\/p>\n<p>.results-secondary {\n  display: grid;\n  grid-template-columns: 1fr 1fr;\n  gap: 12px;\n  position: relative;\n  z-index: 1;\n}\n.res-card {\n  background: rgba(255,255,255,0.06);\n  border: 1px solid rgba(255,255,255,0.08);\n  border-radius: var(--radius-sm);\n  padding: 16px;\n}\n.res-card .rc-label {\n  font-size: 11px;\n  font-weight: 600;\n  text-transform: uppercase;\n  letter-spacing: 0.5px;\n  color: rgba(255,255,255,0.45);\n  margin-bottom: 4px;\n}\n.res-card .rc-value {\n  font-family: 'JetBrains Mono', monospace;\n  font-size: 20px;\n  font-weight: 600;\n}\n.res-card .rc-unit {\n  font-size: 12px;\n  color: rgba(255,255,255,0.4);\n}\n.results-empty {\n  text-align: center;\n  padding: 60px 20px;\n  color: rgba(255,255,255,0.35);\n  font-size: 15px;\n  position: relative;\n  z-index: 1;\n}\n.results-empty .icon { font-size: 36px; margin-bottom: 12px; display: block; }<\/p>\n<p>\/* ===== G-GRADE CARDS ===== *\/\n.grades-section {\n  padding: 40px 0 48px;\n  background: var(--beige-light);\n}\n.section-header {\n  margin-bottom: 28px;\n}\n.section-header h2 {\n  font-family: 'DM Serif Display', serif;\n  font-size: 30px;\n  color: var(--navy);\n  margin-bottom: 6px;\n}\n.section-header p {\n  font-size: 16px;\n  color: var(--text-secondary);\n}<\/p>\n<p>.grade-cards {\n  display: grid;\n  grid-template-columns: repeat(4, 1fr);\n  gap: 16px;\n  margin-bottom: 36px;\n}\n.grade-card {\n  background: var(--white);\n  border: 1px solid var(--border-light);\n  border-radius: var(--radius);\n  padding: 20px;\n  box-shadow: var(--shadow-sm);\n  transition: all 0.3s;\n  position: relative;\n  overflow: hidden;\n}\n.grade-card:hover {\n  box-shadow: var(--shadow-lg);\n  transform: translateY(-3px);\n}\n.grade-card::before {\n  content: '';\n  position: absolute;\n  top: 0; left: 0; right: 0;\n  height: 3px;\n}\n.grade-card.precision::before { background: var(--blue); }\n.grade-card.standard::before { background: var(--success); }\n.grade-card.general::before { background: var(--warning); }\n.grade-card.coarse::before { background: var(--danger); }<\/p>\n<p>.gc-grade {\n  font-family: 'JetBrains Mono', monospace;\n  font-size: 24px;\n  font-weight: 700;\n  margin-bottom: 2px;\n}\n.grade-card.precision .gc-grade { color: var(--blue); }\n.grade-card.standard .gc-grade { color: var(--success); }\n.grade-card.general .gc-grade { color: var(--warning); }\n.grade-card.coarse .gc-grade { color: var(--danger); }<\/p>\n<p>.gc-velocity {\n  font-size: 12px;\n  font-family: 'JetBrains Mono', monospace;\n  color: var(--text-muted);\n  margin-bottom: 10px;\n}\n.gc-apps {\n  font-size: 13px;\n  color: var(--text-secondary);\n  line-height: 1.5;\n}\n.gc-apps strong {\n  display: block;\n  font-size: 14px;\n  color: var(--text);\n  margin-bottom: 4px;\n}<\/p>\n<p>\/* ===== TABLES ===== *\/\n.table-wrap {\n  background: var(--white);\n  border-radius: var(--radius);\n  border: 1px solid var(--border-light);\n  overflow: hidden;\n  box-shadow: var(--shadow-sm);\n  margin-bottom: 32px;\n}\n.table-wrap .table-title {\n  padding: 16px 24px;\n  font-weight: 600;\n  font-size: 15px;\n  background: var(--beige);\n  border-bottom: 1px solid var(--border-light);\n  color: var(--navy);\n}\ntable {\n  width: 100%;\n  border-collapse: collapse;\n}\ntable th {\n  background: var(--navy);\n  color: var(--white);\n  padding: 12px 16px;\n  font-size: 13px;\n  font-weight: 600;\n  text-transform: uppercase;\n  letter-spacing: 0.5px;\n  text-align: left;\n}\ntable td {\n  padding: 11px 16px;\n  font-size: 14px;\n  border-bottom: 1px solid var(--border-light);\n  color: var(--text);\n}\ntable tr:last-child td { border-bottom: none; }\ntable tr:hover td { background: var(--blue-ghost); }\ntable td:first-child { font-weight: 600; }\n.mono {\n  font-family: 'JetBrains Mono', monospace;\n  font-size: 13px;\n}\n.tag {\n  display: inline-block;\n  padding: 2px 8px;\n  border-radius: 4px;\n  font-size: 11px;\n  font-weight: 600;\n  text-transform: uppercase;\n  letter-spacing: 0.3px;\n}\n.tag.precision { background: var(--blue-pale); color: var(--navy); }\n.tag.standard { background: var(--success-light); color: #065f46; }\n.tag.general { background: var(--warning-light); color: #92400e; }\n.tag.coarse { background: var(--danger-light); color: #991b1b; }<\/p>\n<p>\/* Comparison mini-table *\/\n.compare-grid {\n  display: grid;\n  grid-template-columns: 1fr 1fr;\n  gap: 24px;\n  margin-bottom: 36px;\n}<\/p>\n<p>\/* ===== MAIN CONTENT ===== *\/\n.main-content {\n  padding: 48px 0 64px;\n  background: var(--white);\n}\n.content-layout {\n  display: grid;\n  grid-template-columns: 1fr 300px;\n  gap: 48px;\n}<\/p>\n<p>\/* TOC sidebar *\/\n.toc-sidebar {\n  position: sticky;\n  top: 80px;\n  align-self: start;\n}\n.toc-box {\n  background: var(--beige-light);\n  border: 1px solid var(--beige-dark);\n  border-radius: var(--radius);\n  padding: 24px;\n}\n.toc-box h3 {\n  font-size: 14px;\n  font-weight: 700;\n  text-transform: uppercase;\n  letter-spacing: 0.5px;\n  color: var(--navy);\n  margin-bottom: 16px;\n}\n.toc-box a {\n  display: block;\n  padding: 6px 0;\n  font-size: 14px;\n  color: var(--text-secondary);\n  text-decoration: none;\n  border-left: 2px solid transparent;\n  padding-left: 12px;\n  transition: all 0.2s;\n}\n.toc-box a:hover {\n  color: var(--blue);\n  border-left-color: var(--blue);\n}\n.toc-box a.sub {\n  padding-left: 28px;\n  font-size: 13px;\n  color: var(--text-muted);\n}<\/p>\n<p>\/* Article *\/\n.article-content h2 {\n  font-family: 'DM Serif Display', serif;\n  font-size: 28px;\n  color: var(--navy);\n  margin: 48px 0 16px;\n  padding-top: 20px;\n}\n.article-content h2:first-child { margin-top: 0; }\n.article-content h3 {\n  font-size: 20px;\n  font-weight: 700;\n  color: var(--navy-light);\n  margin: 32px 0 12px;\n}\n.article-content h4 {\n  font-size: 16px;\n  font-weight: 700;\n  color: var(--text);\n  margin: 24px 0 8px;\n}\n.article-content p {\n  margin-bottom: 16px;\n  color: var(--text);\n  line-height: 1.8;\n}\n.article-content ul, .article-content ol {\n  margin: 0 0 16px 24px;\n  line-height: 1.8;\n}\n.article-content li { margin-bottom: 6px; }\n.article-content li strong { color: var(--navy); }\n.article-content a {\n  color: var(--blue);\n  text-decoration: none;\n  border-bottom: 1px solid transparent;\n  transition: border-color 0.2s;\n}\n.article-content a:hover { border-bottom-color: var(--blue); }<\/p>\n<p>\/* Info boxes *\/\n.info-box {\n  background: var(--blue-ghost);\n  border-left: 4px solid var(--blue);\n  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;\n  padding: 20px 24px;\n  margin: 24px 0;\n}\n.info-box.warning {\n  background: #fffbeb;\n  border-left-color: var(--warning);\n}\n.info-box.success {\n  background: #ecfdf5;\n  border-left-color: var(--success);\n}\n.info-box .box-title {\n  font-weight: 700;\n  font-size: 15px;\n  margin-bottom: 6px;\n  color: var(--navy);\n}\n.info-box p { margin-bottom: 8px; font-size: 14px; }\n.info-box p:last-child { margin-bottom: 0; }<\/p>\n<p>\/* Example block *\/\n.example-block {\n  background: var(--beige-light);\n  border: 1px solid var(--beige-dark);\n  border-radius: var(--radius);\n  padding: 28px;\n  margin: 24px 0;\n}\n.example-block .example-title {\n  font-family: 'DM Serif Display', serif;\n  font-size: 18px;\n  color: var(--navy);\n  margin-bottom: 16px;\n}<\/p>\n<p>\/* Formula highlight *\/\n.formula-box {\n  background: var(--navy);\n  color: var(--white);\n  border-radius: var(--radius);\n  padding: 28px 32px;\n  margin: 24px 0;\n  text-align: center;\n  position: relative;\n  overflow: hidden;\n}\n.formula-box::before {\n  content: '';\n  position: absolute; inset: 0;\n  background: radial-gradient(circle at 80% 50%, rgba(37,99,235,0.15) 0%, transparent 60%);\n  pointer-events: none;\n}\n.formula-box .formula-label {\n  font-size: 12px;\n  font-weight: 700;\n  text-transform: uppercase;\n  letter-spacing: 1px;\n  color: var(--blue-light);\n  margin-bottom: 12px;\n  position: relative;\n}\n.formula-box .formula-main {\n  font-family: 'JetBrains Mono', monospace;\n  font-size: 26px;\n  font-weight: 600;\n  position: relative;\n  line-height: 1.4;\n}\n.formula-box .formula-note {\n  font-size: 13px;\n  color: rgba(255,255,255,0.5);\n  margin-top: 12px;\n  position: relative;\n}<\/p>\n<p>\/* Article table *\/\n.article-table {\n  width: 100%;\n  margin: 20px 0;\n  border: 1px solid var(--border-light);\n  border-radius: var(--radius-sm);\n  overflow: hidden;\n}\n.article-table th { padding: 10px 14px; font-size: 12px; }\n.article-table td { padding: 10px 14px; font-size: 14px; }<\/p>\n<p>\/* Visual scale bar *\/\n.scale-bar-wrap {\n  margin: 24px 0;\n}\n.scale-bar-label {\n  display: flex;\n  justify-content: space-between;\n  font-size: 12px;\n  font-weight: 600;\n  text-transform: uppercase;\n  letter-spacing: 0.5px;\n  color: var(--text-muted);\n  margin-bottom: 8px;\n}\n.scale-bar {\n  height: 40px;\n  border-radius: var(--radius-sm);\n  overflow: hidden;\n  display: flex;\n  position: relative;\n}\n.scale-seg {\n  display: flex;\n  align-items: center;\n  justify-content: center;\n  font-size: 12px;\n  font-weight: 700;\n  color: var(--white);\n  transition: flex 0.3s;\n}<\/p>\n<p>\/* ===== SHOP CTA ===== *\/\n.shop-cta {\n  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-light) 100%);\n  padding: 48px 0;\n  color: var(--white);\n  text-align: center;\n  position: relative;\n  overflow: hidden;\n}\n.shop-cta::before {\n  content: '';\n  position: absolute; inset: 0;\n  background: radial-gradient(circle at 50% 50%, rgba(37,99,235,0.15) 0%, transparent 60%);\n  pointer-events: none;\n}\n.shop-cta h2 {\n  font-family: 'DM Serif Display', serif;\n  font-size: 32px;\n  margin-bottom: 12px;\n  position: relative;\n}\n.shop-cta p {\n  font-size: 17px;\n  color: rgba(255,255,255,0.7);\n  margin-bottom: 28px;\n  max-width: 640px;\n  margin-left: auto;\n  margin-right: auto;\n  position: relative;\n}\n.shop-cta .cta-btn {\n  display: inline-flex;\n  align-items: center;\n  gap: 8px;\n  padding: 14px 36px;\n  background: var(--blue);\n  color: var(--white);\n  text-decoration: none;\n  border-radius: var(--radius-sm);\n  font-weight: 600;\n  font-size: 16px;\n  transition: all 0.2s;\n  position: relative;\n}\n.shop-cta .cta-btn:hover {\n  background: var(--blue-light);\n  transform: translateY(-2px);\n  box-shadow: 0 8px 24px rgba(37,99,235,0.3);\n}<\/p>\n<p>\/* Footer *\/\n.page-footer {\n  background: var(--beige);\n  border-top: 1px solid var(--beige-dark);\n  padding: 32px 0;\n  text-align: center;\n}\n.page-footer a { color: var(--blue); text-decoration: none; font-weight: 500; }\n.page-footer p { font-size: 14px; color: var(--text-muted); }<\/p>\n<p>\/* Animations *\/\n@keyframes fadeInUp {\n  from { opacity: 0; transform: translateY(16px); }\n  to { opacity: 1; transform: translateY(0); }\n}\n.animate-in { animation: fadeInUp 0.5s ease-out forwards; }\n.delay-1 { animation-delay: 0.1s; opacity: 0; }\n.delay-2 { animation-delay: 0.2s; opacity: 0; }<\/p>\n<p>@media print {\n  .quick-nav, .shop-cta { display: none; }\n  body { min-width: auto; }\n}\n<\/style>\n<p><!-- HERO --><\/p>\n<header class=\"hero\">\n<div class=\"hero-inner\">\n<div class=\"breadcrumb\">\n      <a href=\"https:\/\/vibromera.eu\/vi\/\">Trang ch\u1ee7<\/a> \u2192 <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/\">Thu\u1eadt ng\u1eef<\/a> \u2192 C\u00e2n b\u1eb1ng c\u00e1c c\u1ea5p ch\u1ea5t l\u01b0\u1ee3ng\n    <\/div>\n<h1>Hi\u1ec3u bi\u1ebft <span>C\u00e2n b\u1eb1ng c\u00e1c c\u1ea5p ch\u1ea5t l\u01b0\u1ee3ng<\/span> (L\u1edbp G)<\/h1>\n<p class=\"subtitle\">H\u1ec7 th\u1ed1ng ph\u00e2n lo\u1ea1i theo ti\u00eau chu\u1ea9n ISO \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh \u0111\u1ed9 m\u1ea5t c\u00e2n b\u1eb1ng d\u01b0 cho ph\u00e9p \u2014 t\u1eeb con quay h\u1ed3i chuy\u1ec3n ch\u00ednh x\u00e1c \u1edf m\u1ee9c G0.4 \u0111\u1ebfn \u0111\u1ed9ng c\u01a1 diesel h\u00e0ng h\u1ea3i h\u1ea1ng n\u1eb7ng \u1edf m\u1ee9c G4000. Bao g\u1ed3m m\u00e1y t\u00ednh, b\u1ea3ng tham kh\u1ea3o v\u00e0 c\u00e1c v\u00ed d\u1ee5 th\u1ef1c t\u1ebf.<\/p>\n<\/p><\/div>\n<\/header>\n\t\t<section class=\"woocommerce hestia-shop products is-shortcode\" id=\"products\" data-sorder=\"hestia_shop\" >\n\t\t\t\t\t\t<div class=\"\">\n\t\t\t\t\t\t<div class=\"hestia-shop-content\">\n\t\t\t<div class=\"row\" data-aos=\"fade-up\" >\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/vi\/product\/balanset-1\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/vi\/product\/balanset-1\/\" title=\"M\u00e1y c\u00e2n b\u1eb1ng di \u0111\u1ed9ng &amp; M\u00e1y ph\u00e2n t\u00edch rung \u0111\u1ed9ng Balanset-1A\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"B\u1ed9 \u0111\u1ea7y \u0111\u1ee7 m\u00e1y c\u00e2n b\u1eb1ng v\u00e0 ph\u00e2n t\u00edch rung \u0111\u1ed9ng c\u1ea7m tay Balanset-1A\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-18x12.webp 18w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-272x182.webp 272w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/vi\/product-category\/devices\/\" rel=\"tag\">Thi\u1ebft b\u1ecb<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/vi\/product\/balanset-1\/\" title=\"M\u00e1y c\u00e2n b\u1eb1ng di \u0111\u1ed9ng &amp; M\u00e1y ph\u00e2n t\u00edch rung \u0111\u1ed9ng Balanset-1A\">M\u00e1y c\u00e2n b\u1eb1ng di \u0111\u1ed9ng &amp; M\u00e1y ph\u00e2n t\u00edch rung \u0111\u1ed9ng Balanset-1A<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>1,975.00<\/span> + Thu\u1ebf GTGT (n\u1ebfu c\u00f3)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/vi\/wp-json\/wp\/v2\/glossary\/130?add-to-cart=986\" data-quantity=\"1\" data-product_id=\"986\" data-product_sku=\"BS-1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/vi\/wp-json\/wp\/v2\/glossary\/130?add-to-cart=986\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_986\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"986\" data-product_sku=\"BS-1\" aria-label=\"Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng: \u201cPortable balancer &amp; Vibration analyzer Balanset-1A\u201d\" rel=\"nofollow\" data-success_message=\"\u201cPortable balancer &amp; Vibration analyzer Balanset-1A\u201d \u0111\u00e3 \u0111\u01b0\u1ee3c th\u00eam v\u00e0o gi\u1ecf h\u00e0ng c\u1ee7a b\u1ea1n\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_986\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/vi\/product\/vibration-sensor\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/vi\/product\/vibration-sensor\/\" title=\"C\u1ea3m bi\u1ebfn rung\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"C\u1eadn c\u1ea3nh c\u1ea3m bi\u1ebfn rung Balanset-1A\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-300x200.webp 300w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-768x512.webp 768w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-1024x682.webp 1024w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-272x182.webp 272w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3.webp 1280w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/vi\/product-category\/parts\/\" rel=\"tag\">Ph\u1ee5 t\u00f9ng<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/vi\/product\/vibration-sensor\/\" title=\"C\u1ea3m bi\u1ebfn rung\">C\u1ea3m bi\u1ebfn rung<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>90.00<\/span> + Thu\u1ebf GTGT (n\u1ebfu c\u00f3)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/vi\/wp-json\/wp\/v2\/glossary\/130?add-to-cart=1820\" data-quantity=\"1\" data-product_id=\"1820\" data-product_sku=\"VS-1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/vi\/wp-json\/wp\/v2\/glossary\/130?add-to-cart=1820\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_1820\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"1820\" data-product_sku=\"VS-1\" aria-label=\"Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng: \u201cVibration sensor\u201d\" rel=\"nofollow\" data-success_message=\"\u201cVibration sensor\u201d \u0111\u00e3 \u0111\u01b0\u1ee3c th\u00eam v\u00e0o gi\u1ecf h\u00e0ng c\u1ee7a b\u1ea1n\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_1820\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/vi\/product\/optical-sensor-for-balanset-and-arbalance\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/vi\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"C\u1ea3m bi\u1ebfn quang h\u1ecdc (M\u00e1y \u0111o t\u1ed1c \u0111\u1ed9 laser)\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"C\u1ea3m bi\u1ebfn quang h\u1ecdc (M\u00e1y \u0111o t\u1ed1c \u0111\u1ed9 laser)\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-300x200.webp 300w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-1024x682.webp 1024w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-768x512.webp 768w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-1536x1023.webp 1536w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-18x12.webp 18w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-460x306.webp 460w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-272x182.webp 272w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU.webp 1600w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/vi\/product-category\/parts\/\" rel=\"tag\">Ph\u1ee5 t\u00f9ng<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/vi\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"C\u1ea3m bi\u1ebfn quang h\u1ecdc (M\u00e1y \u0111o t\u1ed1c \u0111\u1ed9 laser)\">C\u1ea3m bi\u1ebfn quang h\u1ecdc (M\u00e1y \u0111o t\u1ed1c \u0111\u1ed9 laser)<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>124.00<\/span> + Thu\u1ebf GTGT (n\u1ebfu c\u00f3)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/vi\/wp-json\/wp\/v2\/glossary\/130?add-to-cart=1832\" data-quantity=\"1\" data-product_id=\"1832\" data-product_sku=\"Tach-1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/vi\/wp-json\/wp\/v2\/glossary\/130?add-to-cart=1832\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_1832\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"1832\" data-product_sku=\"Tach-1\" aria-label=\"Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng: \u201cOptical Sensor (Laser Tachometer)\u201d\" rel=\"nofollow\" data-success_message=\"\u201cOptical Sensor (Laser Tachometer)\u201d \u0111\u00e3 \u0111\u01b0\u1ee3c th\u00eam v\u00e0o gi\u1ecf h\u00e0ng c\u1ee7a b\u1ea1n\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_1832\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/vi\/product\/balanset-4\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/vi\/product\/balanset-4\/\" title=\"Balanset-4\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"B\u1ed9 d\u1ee5ng c\u1ee5 c\u00e2n b\u1eb1ng r\u00f4to Vibromera: h\u1ed9p \u0111\u1ef1ng, b\u1ed9 \u0111i\u1ec1u ch\u1ec9nh t\u00edn hi\u1ec7u \u0111a k\u00eanh, m\u00e1y ph\u00e2n t\u00edch c\u1ea7m tay, \u0111\u1ebf t\u1eeb, c\u1ea3m bi\u1ebfn rung v\u00e0 d\u00e2y c\u00e1p xo\u1eafn.\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-300x200.webp 300w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-18x12.webp 18w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-460x306.webp 460w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-272x182.webp 272w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4.webp 640w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/vi\/product-category\/devices\/\" rel=\"tag\">Thi\u1ebft b\u1ecb<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/vi\/product\/balanset-4\/\" title=\"Balanset-4\">Balanset-4<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>6,803.00<\/span> + Thu\u1ebf GTGT (n\u1ebfu c\u00f3)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/vi\/wp-json\/wp\/v2\/glossary\/130?add-to-cart=1833\" data-quantity=\"1\" data-product_id=\"1833\" data-product_sku=\"BS-4\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/vi\/wp-json\/wp\/v2\/glossary\/130?add-to-cart=1833\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_1833\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"1833\" data-product_sku=\"BS-4\" aria-label=\"Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng: \u201cBalanset-4\u201d\" rel=\"nofollow\" data-success_message=\"\u201cBalanset-4\u201d \u0111\u00e3 \u0111\u01b0\u1ee3c th\u00eam v\u00e0o gi\u1ecf h\u00e0ng c\u1ee7a b\u1ea1n\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_1833\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div><!-- \/.row --><div class=\"row\">\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/vi\/product\/magnet-stand\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/vi\/product\/magnet-stand\/\" title=\"\u0110\u1ebf t\u1eeb Insize-60-kgf\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"\u0110\u1ebf nam ch\u00e2m.\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-300x200.webp 300w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-1024x682.webp 1024w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-768x512.webp 768w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-272x182.webp 272w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36.webp 1280w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/vi\/product-category\/parts\/\" rel=\"tag\">Ph\u1ee5 t\u00f9ng<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/vi\/product\/magnet-stand\/\" title=\"\u0110\u1ebf t\u1eeb Insize-60-kgf\">\u0110\u1ebf t\u1eeb Insize-60-kgf<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>46.00<\/span> + Thu\u1ebf GTGT (n\u1ebfu c\u00f3)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/vi\/wp-json\/wp\/v2\/glossary\/130?add-to-cart=1852\" data-quantity=\"1\" data-product_id=\"1852\" data-product_sku=\"MS-1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/vi\/wp-json\/wp\/v2\/glossary\/130?add-to-cart=1852\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_1852\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"1852\" data-product_sku=\"MS-1\" aria-label=\"Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng: \u201cMagnetic Stand Insize-60-kgf\u201d\" rel=\"nofollow\" data-success_message=\"\u201cMagnetic Stand Insize-60-kgf\u201d \u0111\u00e3 \u0111\u01b0\u1ee3c th\u00eam v\u00e0o gi\u1ecf h\u00e0ng c\u1ee7a b\u1ea1n\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_1852\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/vi\/product\/reflective-tape\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/vi\/product\/reflective-tape\/\" title=\"B\u0103ng ph\u1ea3n quang\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"B\u0103ng ph\u1ea3n quang\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-16x12.webp 16w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-460x306.webp 460w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-272x182.webp 272w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/vi\/product-category\/parts\/\" rel=\"tag\">Ph\u1ee5 t\u00f9ng<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/vi\/product\/reflective-tape\/\" title=\"B\u0103ng ph\u1ea3n quang\">B\u0103ng ph\u1ea3n quang<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>10.00<\/span> + Thu\u1ebf GTGT (n\u1ebfu c\u00f3)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/vi\/wp-json\/wp\/v2\/glossary\/130?add-to-cart=2329\" data-quantity=\"1\" data-product_id=\"2329\" data-product_sku=\"rt-1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/vi\/wp-json\/wp\/v2\/glossary\/130?add-to-cart=2329\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_2329\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"2329\" data-product_sku=\"rt-1\" aria-label=\"Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng: \u201cReflective tape\u201d\" rel=\"nofollow\" data-success_message=\"\u201cReflective tape\u201d \u0111\u00e3 \u0111\u01b0\u1ee3c th\u00eam v\u00e0o gi\u1ecf h\u00e0ng c\u1ee7a b\u1ea1n\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_2329\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/vi\/product\/dynamic-balancer-balanset-1a\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/vi\/product\/dynamic-balancer-balanset-1a\/\" title=\"M\u00e1y c\u00e2n b\u1eb1ng \u0111\u1ed9ng \u201cBalanset-1A\u201d OEM\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"N\u1ed9i dung b\u1ed9 s\u1ea3n ph\u1ea9m Balanset-1A bao g\u1ed3m thi\u1ebft b\u1ecb giao di\u1ec7n, c\u1ea3m bi\u1ebfn, m\u00e1y \u0111o t\u1ed1c \u0111\u1ed9 v\u00e0 c\u00e1c ph\u1ee5 ki\u1ec7n\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-300x200.webp 300w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-1024x683.webp 1024w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-768x512.webp 768w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-1536x1024.webp 1536w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-2048x1366.webp 2048w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-272x182.webp 272w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-e1732998877834.webp 708w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/vi\/product-category\/devices\/\" rel=\"tag\">Thi\u1ebft b\u1ecb<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/vi\/product\/dynamic-balancer-balanset-1a\/\" title=\"M\u00e1y c\u00e2n b\u1eb1ng \u0111\u1ed9ng \u201cBalanset-1A\u201d OEM\">M\u00e1y c\u00e2n b\u1eb1ng \u0111\u1ed9ng \u201cBalanset-1A\u201d OEM<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>1,735.00<\/span> + Thu\u1ebf GTGT (n\u1ebfu c\u00f3)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/vi\/wp-json\/wp\/v2\/glossary\/130?add-to-cart=4193\" data-quantity=\"1\" data-product_id=\"4193\" data-product_sku=\"BS-1OEM\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/vi\/wp-json\/wp\/v2\/glossary\/130?add-to-cart=4193\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_4193\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"4193\" data-product_sku=\"BS-1OEM\" aria-label=\"Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng: \u201cDynamic balancer \u201cBalanset-1A\u201d OEM\u201d\" rel=\"nofollow\" data-success_message=\"\u201cDynamic balancer \u201cBalanset-1A\u201d OEM\u201d \u0111\u00e3 \u0111\u01b0\u1ee3c th\u00eam v\u00e0o gi\u1ecf h\u00e0ng c\u1ee7a b\u1ea1n\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_4193\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/section>\n\t\t\n<p><!-- QUICK NAV --><\/p>\n<nav class=\"quick-nav\">\n<div class=\"quick-nav-inner\">\n    <a href=\"#calculator\">\u2699 M\u00e1y t\u00ednh<\/a><br \/>\n    <a href=\"#grade-overview\">\ud83d\udcca T\u1ed5ng quan v\u1ec1 c\u1ea5p \u0111\u1ed9<\/a><br \/>\n    <a href=\"#full-table\">\ud83d\udccb B\u1ea3ng ISO<\/a><br \/>\n    <a href=\"#definition\">\ud83d\udcd0 \u0110\u1ecbnh ngh\u0129a<\/a><br \/>\n    <a href=\"#how-it-works\">\ud83d\udd22 C\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng<\/a><br \/>\n    <a href=\"#selecting\">\ud83c\udfaf Ch\u1ecdn c\u1ea5p \u0111\u1ed9<\/a><br \/>\n    <a href=\"#practical\">\ud83d\udee0 V\u00ed d\u1ee5 th\u1ef1c t\u1ebf<\/a><br \/>\n    <a href=\"#two-plane\">\u2696 C\u00e2n b\u1eb1ng tr\u00ean hai m\u1eb7t ph\u1eb3ng<\/a><br \/>\n    <a href=\"#common-mistakes\">\u26a0 Nh\u1eefng l\u1ed7i th\u01b0\u1eddng g\u1eb7p<\/a><br \/>\n    <a href=\"#importance\">\ud83d\udca1 T\u1ea1i sao \u0111i\u1ec1u n\u00e0y l\u1ea1i quan tr\u1ecdng<\/a>\n  <\/div>\n<\/nav>\n<p><!-- SUMMARY DASHBOARD --><\/p>\n<section class=\"summary-dashboard\" id=\"calculator\">\n<div class=\"container\">\n<div class=\"dashboard-grid\">\n<p>      <!-- Calculator --><\/p>\n<div class=\"calc-panel animate-in\">\n<h2 class=\"panel-title\">M\u00e1y t\u00ednh m\u1ee9c m\u1ea5t c\u00e2n b\u1eb1ng cho ph\u00e9p<\/h2>\n<p class=\"panel-subtitle\">T\u00ednh to\u00e1n U<sub>m\u1ed7i<\/sub> D\u1ef1a tr\u00ean ti\u00eau chu\u1ea9n ISO 21940-11 (tr\u01b0\u1edbc \u0111\u00e2y l\u00e0 ISO 1940-1)<\/p>\n<div class=\"calc-form\">\n<div class=\"form-group\">\n            <label>H\u1ea1ng G<\/label><br \/>\n            <select id=\"gGrade\"><option value=\"0.4\">G 0.4 \u2014 Con quay h\u1ed3i chuy\u1ec3n, tr\u1ee5c ch\u00ednh x\u00e1c<\/option><option value=\"0.7\">G 0.7 \u2014 M\u00e1y m\u00e0i ch\u00ednh x\u00e1c<\/option><option value=\"1\">G 1.0 \u2014 M\u00e1y m\u00e0i, \u0111\u1ed9ng c\u01a1 nh\u1ecf<\/option><option value=\"1.5\">G 1.5 \u2014 \u1ed4 \u0111\u0129a \u00e2m thanh\/video<\/option><option value=\"2.5\" selected>G 2.5 \u2014 Tua bin, \u0111\u1ed9ng c\u01a1 l\u1edbn, m\u00e1y b\u01a1m<\/option><option value=\"4\">G 4.0 \u2014 M\u00e1y n\u00e9n kh\u00ed, m\u00e1y m\u00f3c n\u00f3i chung<\/option><option value=\"6.3\">G 6.3 \u2014 Qu\u1ea1t, b\u00e1nh \u0111\u00e0, thi\u1ebft b\u1ecb x\u1eed l\u00fd<\/option><option value=\"10\">G 10 \u2014 C\u00e1c c\u1ee5m l\u1eafp r\u00e1p \u0111\u1ed9ng c\u01a1 diesel h\u00e0ng h\u1ea3i n\u00f3i chung<\/option><option value=\"16\">G 16 \u2014 Tr\u1ee5c khu\u1ef7u (xe t\u1ea3i, \u0111\u1ea7u m\u00e1y xe l\u1eeda)<\/option><option value=\"25\">G 25 \u2014 M\u00e1y m\u00f3c n\u00f4ng nghi\u1ec7p<\/option><option value=\"40\">G 40 \u2014 B\u00e1nh xe \u00f4 t\u00f4, tr\u1ee5c truy\u1ec1n \u0111\u1ed9ng<\/option><option value=\"100\">G 100 \u2014 C\u1ee5m \u0111\u1ed9ng c\u01a1 diesel h\u00e0ng h\u1ea3i t\u1ed1c \u0111\u1ed9 ch\u1eadm<\/option><option value=\"250\">G 250 \u2014 \u0110\u1ea7u m\u00e1y diesel c\u1ee1 l\u1edbn, t\u1ed1c \u0111\u1ed9 ch\u1eadm (tr\u00ean h\u1ec7 th\u1ed1ng treo l\u00f2 xo)<\/option><option value=\"630\">G 630 \u2014 \u0110\u1ed9ng c\u01a1 piston th\u00f4<\/option><option value=\"4000\">G 4000 \u2014 R\u1ea5t th\u00f4 (tr\u1ee5c khu\u1ef7u tr\u00ean l\u00f2 xo)<\/option><\/select>\n          <\/div>\n<div class=\"form-group\">\n            <label>Kh\u1ed1i l\u01b0\u1ee3ng r\u00f4to <span class=\"unit\">(kg)<\/span><\/label><br \/>\n            <input type=\"number\" id=\"rotorMass\" value=\"25\" min=\"0.001\" step=\"0.1\">\n          <\/div>\n<div class=\"form-group\">\n            <label>T\u1ed1c \u0111\u1ed9 ph\u1ee5c v\u1ee5 <span class=\"unit\">(RPM)<\/span><\/label><br \/>\n            <input type=\"number\" id=\"serviceRPM\" value=\"3000\" min=\"1\" step=\"1\">\n          <\/div>\n<div class=\"form-group\">\n            <label>S\u1ed1 l\u01b0\u1ee3ng m\u1eb7t ph\u1eb3ng <span class=\"unit\">(hi\u1ec7u ch\u1ec9nh)<\/span><\/label><br \/>\n            <select id=\"numPlanes\"><option value=\"1\">M\u1ed9t m\u1eb7t ph\u1eb3ng<\/option><option value=\"2\" selected>Hai m\u1eb7t ph\u1eb3ng<\/option><\/select>\n          <\/div>\n<p>          <button class=\"calc-btn\" onclick=\"calculate()\">T\u00ednh to\u00e1n m\u1ee9c m\u1ea5t c\u00e2n b\u1eb1ng cho ph\u00e9p \u2192<\/button>\n        <\/div>\n<\/p><\/div>\n<p>      <!-- Results --><\/p>\n<div class=\"results-panel animate-in delay-1\">\n<h2 class=\"panel-title\">Dung sai \u0111\u01b0\u1ee3c t\u00ednh to\u00e1n<\/h2>\n<p class=\"panel-subtitle\">K\u1ebft qu\u1ea3 d\u1ef1a tr\u00ean ti\u00eau chu\u1ea9n ISO 21940-11<\/p>\n<div id=\"resultsArea\">\n<div class=\"results-empty\">\n            <span class=\"icon\">\u2696<\/span><br \/>\n            Nh\u1eadp c\u00e1c th\u00f4ng s\u1ed1 r\u00f4to v\u00e0 nh\u1ea5p v\u00e0o T\u00ednh to\u00e1n.<br \/>\u0111\u1ec3 th\u1ea5y \u0111\u01b0\u1ee3c s\u1ef1 m\u1ea5t c\u00e2n b\u1eb1ng cho ph\u00e9p\n          <\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/section>\n<p><!-- G-GRADE OVERVIEW CARDS + TABLES --><\/p>\n<section class=\"grades-section\" id=\"grade-overview\">\n<div class=\"container\">\n<div class=\"section-header\">\n<h2>T\u1ed5ng quan v\u1ec1 h\u1ea1ng G \u2014 S\u01a1 l\u01b0\u1ee3c<\/h2>\n<p>Th\u1ebb tham kh\u1ea3o nhanh v\u1ec1 c\u00e1c c\u1ea5p \u0111\u1ed9 ch\u1ea5t l\u01b0\u1ee3ng c\u00e2n th\u01b0\u1eddng d\u00f9ng nh\u1ea5t trong th\u1ef1c ti\u1ec5n c\u00f4ng nghi\u1ec7p.<\/p>\n<\/p><\/div>\n<div class=\"grade-cards\">\n<div class=\"grade-card precision\">\n<div class=\"gc-grade\">G 0,4<\/div>\n<div class=\"gc-velocity\">0,4 mm\/s<\/div>\n<div class=\"gc-apps\">\n          <strong>\u0110\u1ed9 ch\u00ednh x\u00e1c c\u1ef1c cao<\/strong><br \/>\n          Con quay h\u1ed3i chuy\u1ec3n, tr\u1ee5c ch\u00ednh x\u00e1c, d\u1ee5ng c\u1ee5 nha khoa\/ph\u1eabu thu\u1eadt t\u1ed1c \u0111\u1ed9 cao, b\u00e1nh xe ph\u1ea3n l\u1ef1c v\u1ec7 tinh\n        <\/div>\n<\/p><\/div>\n<div class=\"grade-card precision\">\n<div class=\"gc-grade\">G 1.0<\/div>\n<div class=\"gc-velocity\">1,0 mm\/gi\u00e2y<\/div>\n<div class=\"gc-apps\">\n          <strong>\u0110\u1ed9 ch\u00ednh x\u00e1c cao<\/strong><br \/>\n          B\u1ed9 truy\u1ec1n \u0111\u1ed9ng m\u00e1y m\u00e0i, \u0111\u1ed9ng c\u01a1 \u0111i\u1ec7n nh\u1ecf, tr\u1ee5c ch\u00ednh gia c\u00f4ng t\u1ed1c \u0111\u1ed9 cao, \u1ed5 c\u1ee9ng m\u00e1y t\u00ednh.\n        <\/div>\n<\/p><\/div>\n<div class=\"grade-card standard\">\n<div class=\"gc-grade\">G 2.5<\/div>\n<div class=\"gc-velocity\">2,5 mm\/gi\u00e2y<\/div>\n<div class=\"gc-apps\">\n          <strong>\u0110\u1ed9 ch\u00ednh x\u00e1c ti\u00eau chu\u1ea9n<\/strong><br \/>\n          Tuabin kh\u00ed\/h\u01a1i, m\u00e1y ph\u00e1t \u0111i\u1ec7n, \u0111\u1ed9ng c\u01a1 \u0111i\u1ec7n c\u1ee1 trung\/l\u1edbn, b\u1ed9 t\u0103ng \u00e1p, b\u1ed9 truy\u1ec1n \u0111\u1ed9ng m\u00e1y c\u00f4ng c\u1ee5\n        <\/div>\n<\/p><\/div>\n<div class=\"grade-card standard\">\n<div class=\"gc-grade\">G 6.3<\/div>\n<div class=\"gc-velocity\">6,3 mm\/s<\/div>\n<div class=\"gc-apps\">\n          <strong>C\u00f4ng nghi\u1ec7p chung<\/strong><br \/>\n          Qu\u1ea1t, c\u00e1nh qu\u1ea1t b\u01a1m, b\u00e1nh \u0111\u00e0, m\u00e1y ly t\u00e2m, m\u00e1y m\u00f3c nh\u00e0 m\u00e1y ch\u1ebf bi\u1ebfn, thi\u1ebft b\u1ecb HVAC\n        <\/div>\n<\/p><\/div>\n<div class=\"grade-card general\">\n<div class=\"gc-grade\">G 16<\/div>\n<div class=\"gc-velocity\">16 mm\/s<\/div>\n<div class=\"gc-apps\">\n          <strong>C\u00f4ng nghi\u1ec7p th\u00f4<\/strong><br \/>\n          Tr\u1ee5c khu\u1ef7u (xe t\u1ea3i, \u0111\u1ea7u m\u00e1y xe l\u1eeda), c\u00e1c b\u1ed9 ph\u1eadn c\u1ee7a m\u00e1y m\u00f3c n\u00f4ng nghi\u1ec7p, c\u1ee5m b\u00e1nh xe \u00f4 t\u00f4\n        <\/div>\n<\/p><\/div>\n<div class=\"grade-card general\">\n<div class=\"gc-grade\">G 40<\/div>\n<div class=\"gc-velocity\">40 mm\/gi\u00e2y<\/div>\n<div class=\"gc-apps\">\n          <strong>Xe h\u1ea1ng n\u1eb7ng \/ \u00d4 t\u00f4<\/strong><br \/>\n          B\u00e1nh xe \u00f4 t\u00f4, tr\u1ee5c truy\u1ec1n \u0111\u1ed9ng, tr\u1ee5c khu\u1ef7u cho \u0111\u1ed9ng c\u01a1 diesel h\u00e0ng h\u1ea3i c\u1ee1 l\u1edbn t\u1ed1c \u0111\u1ed9 ch\u1eadm.\n        <\/div>\n<\/p><\/div>\n<div class=\"grade-card coarse\">\n<div class=\"gc-grade\">G 100<\/div>\n<div class=\"gc-velocity\">100 mm\/s<\/div>\n<div class=\"gc-apps\">\n          <strong>R\u1ea5t th\u00f4<\/strong><br \/>\n          B\u1ed9 \u0111\u1ed9ng c\u01a1 diesel t\u1ed1c \u0111\u1ed9 ch\u1eadm ho\u00e0n ch\u1ec9nh, b\u1ed9 truy\u1ec1n \u0111\u1ed9ng tr\u1ee5c khu\u1ef7u diesel h\u00e0ng h\u1ea3i t\u1ed1c \u0111\u1ed9 ch\u1eadm (l\u1eafp \u0111\u1eb7t c\u1ed1 \u0111\u1ecbnh)\n        <\/div>\n<\/p><\/div>\n<div class=\"grade-card coarse\">\n<div class=\"gc-grade\">G 630+<\/div>\n<div class=\"gc-velocity\">630\u20134000 mm\/s<\/div>\n<div class=\"gc-apps\">\n          <strong>\u0110\u1ed9ng c\u01a1 piston<\/strong><br \/>\n          \u0110\u1ed9ng c\u01a1 piston l\u1edbn \u0111\u1eb7t tr\u00ean gi\u00e1 \u0111\u1ee1 \u0111\u00e0n h\u1ed3i, h\u1ec7 th\u1ed1ng truy\u1ec1n \u0111\u1ed9ng tr\u1ee5c khu\u1ef7u tr\u00ean gi\u00e1 \u0111\u1ee1 linh ho\u1ea1t.\n        <\/div>\n<\/p><\/div>\n<\/p><\/div>\n<p>    <!-- FULL ISO TABLE --><\/p>\n<div class=\"table-wrap\" id=\"full-table\">\n<div class=\"table-title\">\ud83d\udccb B\u1ea3ng ph\u00e2n lo\u1ea1i ch\u1ea5t l\u01b0\u1ee3ng r\u00f4to theo ti\u00eau chu\u1ea9n ISO 21940-11 \u0111\u1ea7y \u0111\u1ee7<\/div>\n<table>\n<thead>\n<tr>\n<th>H\u1ea1ng G<\/th>\n<th>e<sub>m\u1ed7i<\/sub> \u00d7 \u03c9 (mm\/s)<\/th>\n<th>L\u1edbp ch\u00ednh x\u00e1c<\/th>\n<th>C\u00e1c lo\u1ea1i r\u00f4to \/ \u1ee8ng d\u1ee5ng<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td class=\"mono\">G 4000<\/td>\n<td class=\"mono\">4000<\/td>\n<td><span class=\"tag coarse\">R\u1ea5t th\u00f4<\/span><\/td>\n<td>H\u1ec7 th\u1ed1ng truy\u1ec1n \u0111\u1ed9ng tr\u1ee5c khu\u1ef7u c\u1ee7a c\u00e1c \u0111\u1ed9ng c\u01a1 diesel h\u00e0ng h\u1ea3i c\u1ee1 l\u1edbn, t\u1ed1c \u0111\u1ed9 ch\u1eadm (tr\u00ean c\u00e1c gi\u00e1 \u0111\u1ee1 \u0111\u00e0n h\u1ed3i), v\u1ed1n d\u0129 kh\u00f4ng c\u00e2n b\u1eb1ng.<\/td>\n<\/tr>\n<tr>\n<td class=\"mono\">G 1600<\/td>\n<td class=\"mono\">1600<\/td>\n<td><span class=\"tag coarse\">R\u1ea5t th\u00f4<\/span><\/td>\n<td>H\u1ec7 th\u1ed1ng truy\u1ec1n \u0111\u1ed9ng tr\u1ee5c khu\u1ef7u c\u1ee7a c\u00e1c \u0111\u1ed9ng c\u01a1 diesel h\u00e0ng h\u1ea3i c\u1ee1 l\u1edbn, t\u1ed1c \u0111\u1ed9 ch\u1eadm (l\u1eafp \u0111\u1eb7t c\u1ed1 \u0111\u1ecbnh)<\/td>\n<\/tr>\n<tr>\n<td class=\"mono\">G 630<\/td>\n<td class=\"mono\">630<\/td>\n<td><span class=\"tag coarse\">Th\u00f4<\/span><\/td>\n<td>H\u1ec7 th\u1ed1ng truy\u1ec1n \u0111\u1ed9ng tr\u1ee5c khu\u1ef7u c\u1ee7a c\u00e1c \u0111\u1ed9ng c\u01a1 piston l\u1edbn, t\u1ed1c \u0111\u1ed9 cao, c\u00f3 s\u1ed1 xi lanh l\u1ebb.<\/td>\n<\/tr>\n<tr>\n<td class=\"mono\">G 250<\/td>\n<td class=\"mono\">250<\/td>\n<td><span class=\"tag coarse\">Th\u00f4<\/span><\/td>\n<td>H\u1ec7 th\u1ed1ng truy\u1ec1n \u0111\u1ed9ng tr\u1ee5c khu\u1ef7u c\u1ee7a c\u00e1c \u0111\u1ed9ng c\u01a1 piston l\u1edbn, t\u1ed1c \u0111\u1ed9 cao, c\u00f3 s\u1ed1 xi lanh ch\u1eb5n.<\/td>\n<\/tr>\n<tr>\n<td class=\"mono\">G 100<\/td>\n<td class=\"mono\">100<\/td>\n<td><span class=\"tag general\">Chung<\/span><\/td>\n<td>C\u00e1c c\u1ee5m \u0111\u1ed9ng c\u01a1 piston ho\u00e0n ch\u1ec9nh; h\u1ec7 th\u1ed1ng truy\u1ec1n \u0111\u1ed9ng tr\u1ee5c khu\u1ef7u c\u1ee7a \u0111\u1ed9ng c\u01a1 diesel h\u00e0ng h\u1ea3i t\u1ed1c \u0111\u1ed9 ch\u1eadm (l\u1eafp \u0111\u1eb7t c\u1ed1 \u0111\u1ecbnh).<\/td>\n<\/tr>\n<tr>\n<td class=\"mono\">G 40<\/td>\n<td class=\"mono\">40<\/td>\n<td><span class=\"tag general\">Chung<\/span><\/td>\n<td>B\u00e1nh xe, v\u00e0nh xe, b\u1ed9 b\u00e1nh xe \u00f4 t\u00f4; tr\u1ee5c truy\u1ec1n \u0111\u1ed9ng; tr\u1ee5c khu\u1ef7u cho \u0111\u1ed9ng c\u01a1 diesel h\u00e0ng h\u1ea3i c\u1ee1 l\u1edbn, t\u1ed1c \u0111\u1ed9 ch\u1eadm.<\/td>\n<\/tr>\n<tr>\n<td class=\"mono\">G 25<\/td>\n<td class=\"mono\">25<\/td>\n<td><span class=\"tag general\">Chung<\/span><\/td>\n<td>C\u00e1c b\u1ed9 ph\u1eadn c\u1ee7a m\u00e1y m\u00f3c n\u00f4ng nghi\u1ec7p; tr\u1ee5c khu\u1ef7u truy\u1ec1n \u0111\u1ed9ng cho \u0111\u1ed9ng c\u01a1 xe t\u1ea3i v\u00e0 \u0111\u1ea7u m\u00e1y xe l\u1eeda.<\/td>\n<\/tr>\n<tr>\n<td class=\"mono\">G 16<\/td>\n<td class=\"mono\">16<\/td>\n<td><span class=\"tag general\">Chung<\/span><\/td>\n<td>C\u00e1c b\u1ed9 ph\u1eadn c\u1ee7a m\u00e1y m\u00f3c n\u00f4ng nghi\u1ec7p\/nghi\u1ec1n n\u00e1t; tr\u1ee5c khu\u1ef7u truy\u1ec1n \u0111\u1ed9ng cho xe t\u1ea3i\/\u0111\u1ea7u m\u00e1y xe l\u1eeda; \u0111\u1ed9ng c\u01a1 \u00f4 t\u00f4 (y\u00eau c\u1ea7u \u0111\u1eb7c bi\u1ec7t)<\/td>\n<\/tr>\n<tr>\n<td class=\"mono\">G 10<\/td>\n<td class=\"mono\">10<\/td>\n<td><span class=\"tag standard\">Ti\u00eau chu\u1ea9n<\/span><\/td>\n<td>C\u00e1c c\u1ee5m \u0111\u1ed9ng c\u01a1 diesel h\u00e0ng h\u1ea3i th\u00f4ng d\u1ee5ng; h\u1ec7 th\u1ed1ng truy\u1ec1n \u0111\u1ed9ng tr\u1ee5c khu\u1ef7u cho \u0111\u1ed9ng c\u01a1 c\u00f3 y\u00eau c\u1ea7u \u0111\u1eb7c bi\u1ec7t.<\/td>\n<\/tr>\n<tr>\n<td class=\"mono\">G 6.3<\/td>\n<td class=\"mono\">6.3<\/td>\n<td><span class=\"tag standard\">Ti\u00eau chu\u1ea9n<\/span><\/td>\n<td>Qu\u1ea1t; b\u00e1nh \u0111\u00e0; c\u00e1nh qu\u1ea1t b\u01a1m; tr\u1ed1ng ly t\u00e2m; m\u00e1y m\u00f3c nh\u00e0 m\u00e1y ch\u1ebf bi\u1ebfn; c\u00f4ng nghi\u1ec7p n\u00f3i chung<\/td>\n<\/tr>\n<tr>\n<td class=\"mono\">G 4<\/td>\n<td class=\"mono\">4<\/td>\n<td><span class=\"tag standard\">Ti\u00eau chu\u1ea9n<\/span><\/td>\n<td>R\u00f4to m\u00e1y n\u00e9n (c\u1ee9ng); ph\u1ea7n \u1ee9ng \u0111\u1ed9ng c\u01a1 \u0111i\u1ec7n; m\u00e1y m\u00f3c th\u00f4ng d\u1ee5ng c\u00f3 y\u00eau c\u1ea7u \u0111\u1eb7c bi\u1ec7t<\/td>\n<\/tr>\n<tr>\n<td class=\"mono\">G 2.5<\/td>\n<td class=\"mono\">2.5<\/td>\n<td><span class=\"tag standard\">Ti\u00eau chu\u1ea9n<\/span><\/td>\n<td>Tuabin kh\u00ed\/h\u01a1i; r\u00f4to m\u00e1y ph\u00e1t \u0111i\u1ec7n tuabin; b\u1ed9 t\u0103ng \u00e1p; b\u1ed9 truy\u1ec1n \u0111\u1ed9ng m\u00e1y c\u00f4ng c\u1ee5; \u0111\u1ed9ng c\u01a1 \u0111i\u1ec7n c\u1ee1 trung b\u00ecnh\/l\u1edbn; m\u00e1y b\u01a1m c\u00f3 b\u1ed9 truy\u1ec1n \u0111\u1ed9ng tuabin<\/td>\n<\/tr>\n<tr>\n<td class=\"mono\">G 1,5<\/td>\n<td class=\"mono\">1.5<\/td>\n<td><span class=\"tag precision\">\u0110\u1ed9 ch\u00ednh x\u00e1c<\/span><\/td>\n<td>\u1ed4 \u0111\u0129a m\u00e1y ghi \u00e2m\/ghi h\u00ecnh; \u1ed5 \u0111\u0129a m\u00e1y d\u1ec7t<\/td>\n<\/tr>\n<tr>\n<td class=\"mono\">G 1.0<\/td>\n<td class=\"mono\">1.0<\/td>\n<td><span class=\"tag precision\">\u0110\u1ed9 ch\u00ednh x\u00e1c<\/span><\/td>\n<td>B\u1ed9 truy\u1ec1n \u0111\u1ed9ng m\u00e1y m\u00e0i; r\u00f4to \u0111i\u1ec7n nh\u1ecf (y\u00eau c\u1ea7u \u0111\u1eb7c bi\u1ec7t); tr\u1ed1ng\/\u0111\u0129a b\u1ed9 nh\u1edb m\u00e1y t\u00ednh.<\/td>\n<\/tr>\n<tr>\n<td class=\"mono\">G 0,7<\/td>\n<td class=\"mono\">0.7<\/td>\n<td><span class=\"tag precision\">\u0110\u1ed9 ch\u00ednh x\u00e1c<\/span><\/td>\n<td>Tr\u1ee5c ch\u00ednh m\u00e1y m\u00e0i ch\u00ednh x\u00e1c; ph\u1ea7n \u1ee9ng \u0111\u1ed9ng c\u01a1 \u0111\u1ed9 ch\u00ednh x\u00e1c cao.<\/td>\n<\/tr>\n<tr>\n<td class=\"mono\">G 0,4<\/td>\n<td class=\"mono\">0.4<\/td>\n<td><span class=\"tag precision\">\u0110\u1ed9 ch\u00ednh x\u00e1c c\u1ef1c cao<\/span><\/td>\n<td>Tr\u1ee5c ch\u00ednh c\u1ee7a m\u00e1y m\u00e0i ch\u00ednh x\u00e1c; con quay h\u1ed3i chuy\u1ec3n; b\u00e1nh xe ph\u1ea3n l\u1ef1c v\u1ec7 tinh<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<p>    <!-- Quick-calc table for common scenarios --><\/p>\n<div class=\"table-wrap\">\n<div class=\"table-title\">\ud83d\udd22 Dung sai \u0111\u01b0\u1ee3c t\u00ednh to\u00e1n tr\u01b0\u1edbc \u2014 C\u00e1c tr\u01b0\u1eddng h\u1ee3p r\u00f4to th\u01b0\u1eddng g\u1eb7p \u1edf gia t\u1ed1c G 2.5 v\u00e0 G 6.3<\/div>\n<table>\n<thead>\n<tr>\n<th>Kh\u1ed1i l\u01b0\u1ee3ng r\u00f4to (kg)<\/th>\n<th>v\u00f2ng quay m\u1ed7i ph\u00fat<\/th>\n<th>B\u1ea1n<sub>m\u1ed7i<\/sub> \u1edf G 2,5 (g\u00b7mm)<\/th>\n<th>B\u1ea1n<sub>m\u1ed7i<\/sub> \u1edf G 6,3 (g\u00b7mm)<\/th>\n<th>e<sub>m\u1ed7i<\/sub> \u1edf G 2,5 (\u00b5m)<\/th>\n<th>e<sub>m\u1ed7i<\/sub> \u1edf G 6,3 (\u00b5m)<\/th>\n<\/tr>\n<\/thead>\n<tbody id=\"preCalcBody\">\n        <\/tbody>\n<\/table><\/div>\n<p>    <!-- ISO vs other standards --><\/p>\n<div class=\"table-wrap\">\n<div class=\"table-title\">\ud83c\udf0d So s\u00e1nh ti\u00eau chu\u1ea9n ISO 21940-11 v\u1edbi c\u00e1c ti\u00eau chu\u1ea9n li\u00ean quan<\/div>\n<table>\n<thead>\n<tr>\n<th>Ti\u00eau chu\u1ea9n<\/th>\n<th>Tr\u1ea1ng th\u00e1i<\/th>\n<th>Ph\u1ea1m vi<\/th>\n<th>\u0110i\u1ec3m kh\u00e1c bi\u1ec7t ch\u00ednh<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>ISO 21940-11:2016<\/td>\n<td><span class=\"tag standard\">Hi\u1ec7n h\u00e0nh<\/span><\/td>\n<td>C\u00e2n b\u1eb1ng c\u00e1c y\u00eau c\u1ea7u v\u1ec1 ch\u1ea5t l\u01b0\u1ee3ng \u0111\u1ed1i v\u1edbi r\u00f4to c\u1ee9ng.<\/td>\n<td>Ti\u00eau chu\u1ea9n qu\u1ed1c t\u1ebf hi\u1ec7n h\u00e0nh; thay th\u1ebf ti\u00eau chu\u1ea9n ISO 1940-1.<\/td>\n<\/tr>\n<tr>\n<td>ISO 1940-1:2003<\/td>\n<td><span class=\"tag general\">\u0110\u00e3 b\u1ecb thay th\u1ebf<\/span><\/td>\n<td>Y\u00eau c\u1ea7u ch\u1ea5t l\u01b0\u1ee3ng c\u00e2n b\u1eb1ng (ti\u00eau chu\u1ea9n c\u0169)<\/td>\n<td>H\u1ec7 th\u1ed1ng ph\u00e2n lo\u1ea1i G-grade v\u1eabn \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong ng\u00e0nh; v\u1eabn \u0111\u01b0\u1ee3c tham kh\u1ea3o nhi\u1ec1u.<\/td>\n<\/tr>\n<tr>\n<td>Ti\u00eau chu\u1ea9n ISO 21940-12<\/td>\n<td><span class=\"tag standard\">Hi\u1ec7n h\u00e0nh<\/span><\/td>\n<td>Quy tr\u00ecnh d\u00e0nh cho r\u00f4to m\u1ec1m<\/td>\n<td>R\u00f4to m\u1ec1m ho\u1ea1t \u0111\u1ed9ng g\u1ea7n\/tr\u00ean t\u1ed1c \u0111\u1ed9 t\u1edbi h\u1ea1n<\/td>\n<\/tr>\n<tr>\n<td>API 610 \/ 611 \/ 612 \/ 617<\/td>\n<td><span class=\"tag precision\">Ng\u00e0nh c\u00f4ng nghi\u1ec7p<\/span><\/td>\n<td>Thi\u1ebft b\u1ecb quay trong ng\u00e0nh c\u00f4ng nghi\u1ec7p d\u1ea7u kh\u00ed<\/td>\n<td>Th\u01b0\u1eddng quy \u0111\u1ecbnh 4W\/N (\u2248 G 1.0) \u2014 ch\u1eb7t ch\u1ebd h\u01a1n ISO G 2.5<\/td>\n<\/tr>\n<tr>\n<td>Ti\u00eau chu\u1ea9n ANSI S2.19<\/td>\n<td><span class=\"tag standard\">Qu\u1ed1c gia<\/span><\/td>\n<td>Ti\u00eau chu\u1ea9n ch\u1ea5t l\u01b0\u1ee3ng c\u00e2n b\u1eb1ng qu\u1ed1c gia c\u1ee7a Hoa K\u1ef3<\/td>\n<td>V\u1ec1 m\u1eb7t k\u1ef9 thu\u1eadt, gi\u1ed1ng h\u1ec7t v\u1edbi ti\u00eau chu\u1ea9n ISO 1940-1 (\u0111\u00e3 \u0111\u01b0\u1ee3c th\u00f4ng qua)<\/td>\n<\/tr>\n<tr>\n<td>VDI 2060<\/td>\n<td><span class=\"tag general\">\u0110\u00e3 b\u1ecb thay th\u1ebf<\/span><\/td>\n<td>Ti\u00eau chu\u1ea9n ch\u1ea5t l\u01b0\u1ee3ng c\u00e2n b\u1eb1ng c\u1ee7a \u0110\u1ee9c (l\u1ecbch s\u1eed)<\/td>\n<td>Ti\u1ec1n th\u00e2n c\u1ee7a ti\u00eau chu\u1ea9n ISO 1940; \u0111\u00e3 thi\u1ebft l\u1eadp kh\u00e1i ni\u1ec7m c\u1ea5p \u0111\u1ed9 G.<\/td>\n<\/tr>\n<tr>\n<td>Ti\u00eau chu\u1ea9n DIN ISO 21940-11<\/td>\n<td><span class=\"tag standard\">Hi\u1ec7n h\u00e0nh<\/span><\/td>\n<td>\u0110\u1ee9c \u00e1p d\u1ee5ng ti\u00eau chu\u1ea9n ISO 21940-11<\/td>\n<td>T\u01b0\u01a1ng t\u1ef1 nh\u01b0 ti\u00eau chu\u1ea9n ISO 21940-11 v\u1edbi b\u1ea3n d\u1ecbch ti\u1ebfng \u0110\u1ee9c.<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<\/p><\/div>\n<\/section>\n<p><!-- MAIN ARTICLE CONTENT --><br \/>\n<main class=\"main-content\" id=\"definition\"><\/p>\n<div class=\"container\">\n<div class=\"content-layout\">\n<article class=\"article-content\">\n<h2>\u0110\u1ecbnh ngh\u0129a: C\u1ea5p \u0111\u1ed9 ch\u1ea5t l\u01b0\u1ee3ng c\u00e2n b\u1eb1ng l\u00e0 g\u00ec?<\/h2>\n<p>A <strong>Ch\u1ea5t l\u01b0\u1ee3ng c\u00e2n b\u1eb1ng<\/strong>, th\u01b0\u1eddng \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 <strong>H\u1ea1ng G<\/strong>, l\u00e0 m\u1ed9t h\u1ec7 th\u1ed1ng ph\u00e2n lo\u1ea1i \u0111\u01b0\u1ee3c \u0111\u1ecbnh ngh\u0129a b\u1edfi c\u00e1c ti\u00eau chu\u1ea9n ISO\u2014c\u1ee5 th\u1ec3 l\u00e0 <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/iso-21940-11\/\">ISO 21940-11:2016<\/a>, thay th\u1ebf ti\u00eau chu\u1ea9n ISO 1940-1:2003 c\u0169 h\u01a1n \u2014 \u0111\u1ec3 ch\u1ec9 \u0111\u1ecbnh gi\u1edbi h\u1ea1n ch\u1ea5p nh\u1eadn \u0111\u01b0\u1ee3c c\u1ee7a <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/residual-unbalance\/\">d\u01b0<\/a> <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/unbalance\/\">m\u1ea5t c\u00e2n b\u1eb1ng<\/a> cho m\u1ed9t <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/rigid-rotor\/\">r\u00f4to c\u1ee9ng<\/a>cho r\u00f4-to. N\u00f3 cung c\u1ea5p m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p chu\u1ea9n h\u00f3a, \u0111\u01b0\u1ee3c c\u00f4ng nh\u1eadn tr\u00ean to\u00e0n th\u1ebf gi\u1edbi cho c\u00e1c k\u1ef9 s\u01b0, nh\u00e0 s\u1ea3n xu\u1ea5t v\u00e0 nh\u00e2n vi\u00ean b\u1ea3o tr\u00ec \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh ch\u00ednh x\u00e1c c\u00e1ch c\u00e2n b\u1eb1ng r\u00f4-to cho \u1ee9ng d\u1ee5ng c\u1ee5 th\u1ec3 c\u1ee7a n\u00f3.<\/p>\n<p>Ch\u1ec9 s\u1ed1 G-Grade\u2014v\u00ed d\u1ee5 nh\u01b0 G6.3 ho\u1eb7c G2.5\u2014bi\u1ec3u th\u1ecb v\u1eadn t\u1ed1c ngo\u1ea1i vi kh\u00f4ng \u0111\u1ed5i c\u1ee7a t\u00e2m kh\u1ed1i l\u01b0\u1ee3ng r\u00f4to, \u0111\u01b0\u1ee3c \u0111o b\u1eb1ng milim\u00e9t tr\u00ean gi\u00e2y (mm\/s). V\u1eadn t\u1ed1c n\u00e0y l\u00e0 t\u00edch c\u1ee7a \u0111\u1ed9 m\u1ea5t c\u00e2n b\u1eb1ng ri\u00eang (\u0111\u1ed9 l\u1ec7ch t\u00e2m) v\u00e0 v\u1eadn t\u1ed1c g\u00f3c c\u1ee7a r\u00f4to \u1edf t\u1ed1c \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng t\u1ed1i \u0111a. Ch\u1ec9 s\u1ed1 G c\u00e0ng th\u1ea5p th\u00ec \u0111\u1ed9 ch\u00ednh x\u00e1c c\u00e0ng cao v\u00e0 dung sai c\u00e2n b\u1eb1ng c\u00e0ng nh\u1ecf.<\/p>\n<div class=\"info-box\">\n<div class=\"box-title\">\u00dd t\u01b0\u1edfng then ch\u1ed1t \u0111\u1eb1ng sau \u0111i\u1ec3m G<\/div>\n<p>S\u1ef1 th\u00f4ng minh c\u1ee7a h\u1ec7 th\u1ed1ng G-grade n\u1eb1m \u1edf s\u1ef1 c\u00f4ng nh\u1eadn r\u1eb1ng <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/vibration-severity\/\">m\u1ee9c \u0111\u1ed9 rung<\/a> kh\u00f4ng ch\u1ec9 ph\u1ee5 thu\u1ed9c v\u00e0o m\u1ee9c \u0111\u1ed9 m\u1ea5t c\u00e2n b\u1eb1ng t\u1ed3n t\u1ea1i bao nhi\u00eau, m\u00e0 c\u00f2n ph\u1ee5 thu\u1ed9c v\u00e0o t\u1ed1c \u0111\u1ed9 quay c\u1ee7a rotor. M\u1ed9t rotor c\u00f3 m\u1ea5t c\u00e2n b\u1eb1ng 10 g\u00b7mm \u1edf 30.000 RPM t\u1ea1o ra l\u1ef1c dao \u0111\u1ed9ng nhi\u1ec1u h\u01a1n far so v\u1edbi c\u00f9ng 10 g\u00b7mm \u1edf 1.500 RPM. G-grade n\u1eafm b\u1eaft m\u1ed1i quan h\u1ec7 n\u00e0y trong m\u1ed9t con s\u1ed1 duy nh\u1ea5t \u00e1p d\u1ee5ng b\u1ea5t k\u1ec3 t\u1ed1c \u0111\u1ed9, l\u00e0m cho n\u00f3 ph\u1ed5 qu\u00e1t.<\/p>\n<\/p><\/div>\n<h3>B\u1ed1i c\u1ea3nh l\u1ecbch s\u1eed<\/h3>\n<p>Kh\u00e1i ni\u1ec7m c\u1ea5p G b\u1eaft ngu\u1ed3n t\u1eeb \u0110\u1ee9c v\u1edbi h\u01b0\u1edbng d\u1eabn VDI 2060 v\u00e0o nh\u1eefng n\u0103m 1960. N\u00f3 \u0111\u01b0\u1ee3c qu\u1ed1c t\u1ebf ch\u1ea5p nh\u1eadn d\u01b0\u1edbi d\u1ea1ng ti\u00eau chu\u1ea9n ISO 1940 n\u0103m 1973, \u0111\u01b0\u1ee3c s\u1eeda \u0111\u1ed5i \u0111\u00e1ng k\u1ec3 v\u00e0o n\u0103m 2003 (ISO 1940-1:2003), v\u00e0 g\u1ea7n \u0111\u00e2y nh\u1ea5t \u0111\u01b0\u1ee3c c\u1eadp nh\u1eadt nh\u01b0 m\u1ed9t ph\u1ea7n c\u1ee7a lo\u1ea1t ti\u00eau chu\u1ea9n ISO 21940 v\u00e0o n\u0103m 2016. M\u1eb7c d\u00f9 s\u1ed1 hi\u1ec7u ti\u00eau chu\u1ea9n thay \u0111\u1ed5i, h\u1ec7 th\u1ed1ng c\u1ea5p G c\u01a1 b\u1ea3n v\u00e0 ph\u01b0\u01a1ng ph\u00e1p t\u00ednh to\u00e1n v\u1eabn nh\u1ea5t qu\u00e1n trong h\u01a1n 50 n\u0103m, khi\u1ebfn n\u00f3 tr\u1edf th\u00e0nh m\u1ed9t trong nh\u1eefng ti\u00eau chu\u1ea9n k\u1ef9 thu\u1eadt \u1ed5n \u0111\u1ecbnh v\u00e0 \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng r\u1ed9ng r\u00e3i nh\u1ea5t trong ng\u00e0nh c\u01a1 kh\u00ed.<\/p>\n<h2 id=\"how-it-works\">\u0110i\u1ec3m G ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o? To\u00e1n h\u1ecdc<\/h2>\n<p>G-Grade kh\u00f4ng ph\u1ea3i l\u00e0 gi\u00e1 tr\u1ecb cu\u1ed1i c\u00f9ng <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/balancing-tolerance\/\">dung sai c\u00e2n b\u1eb1ng<\/a> ch\u00ednh n\u00f3, m\u00e0 l\u00e0 tham s\u1ed1 ch\u00ednh \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 t\u00ednh to\u00e1n n\u00f3. Hi\u1ec3u m\u1ed1i quan h\u1ec7 to\u00e1n h\u1ecdc gi\u1eefa G-grade, t\u1ed1c \u0111\u1ed9 rotor, kh\u1ed1i l\u01b0\u1ee3ng rotor v\u00e0 m\u1ea5t c\u00e2n b\u1eb1ng cho ph\u00e9p l\u00e0 c\u1ea7n thi\u1ebft cho \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf. B\u1ea1n c\u00f3 th\u1ec3 b\u1ecf qua ph\u00e9p t\u00ednh th\u1ee7 c\u00f4ng v\u1edbi <a href=\"https:\/\/vibromera.eu\/vi\/calculators\/residual-unbalance-iso1940\/\">C\u00f4ng c\u1ee5 t\u00ednh to\u00e1n \u0111\u1ed9 l\u1ec7ch d\u01b0 (ISO 21940-11)<\/a>.<\/p>\n<h3>M\u1ed1i quan h\u1ec7 c\u1ed1t l\u00f5i<\/h3>\n<p>C\u1ea5p \u0111\u1ed9 G th\u1ec3 hi\u1ec7n t\u00edch c\u1ee7a \u0111\u1ed9 m\u1ea5t c\u00e2n b\u1eb1ng c\u1ee5 th\u1ec3 cho ph\u00e9p (\u0111\u1ed9 l\u1ec7ch t\u00e2m, e)<sub>m\u1ed7i<\/sub>) v\u00e0 v\u1eadn t\u1ed1c g\u00f3c (\u03c9) c\u1ee7a r\u00f4to:<\/p>\n<div class=\"formula-box\">\n<div class=\"formula-label\">\u0110\u1ecbnh ngh\u0129a c\u01a1 b\u1ea3n<\/div>\n<div class=\"formula-main\">G = e<sub>m\u1ed7i<\/sub> \u00d7 \u03c9<\/div>\n<div class=\"formula-note\">trong \u0111\u00f3 e<sub>m\u1ed7i<\/sub> \u0111\u01b0\u1ee3c t\u00ednh b\u1eb1ng mm (ho\u1eb7c \u00b5m \u00f7 1000) v\u00e0 \u03c9 \u0111\u01b0\u1ee3c t\u00ednh b\u1eb1ng rad\/s.<\/div>\n<\/p><\/div>\n<p>V\u00ec \u03c9 = 2\u03c0 \u00d7 n \/ 60 (trong \u0111\u00f3 n l\u00e0 t\u1ed1c \u0111\u1ed9 quay m\u1ed7i ph\u00fat), v\u00e0 b\u1eb1ng c\u00e1ch thay th\u1ebf c\u00e1c gi\u00e1 tr\u1ecb n\u00e0y, ta c\u00f3 th\u1ec3 suy ra c\u00e1c c\u00f4ng th\u1ee9c th\u1ef1c ti\u1ec5n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng h\u00e0ng ng\u00e0y trong c\u00f4ng vi\u1ec7c c\u00e2n b\u1eb1ng:<\/p>\n<div class=\"formula-box\">\n<div class=\"formula-label\">L\u01b0\u1ee3ng m\u1ea5t c\u00e2n b\u1eb1ng ri\u00eang cho ph\u00e9p (\u0111\u1ed9 l\u1ec7ch t\u00e2m)<\/div>\n<div class=\"formula-main\">e<sub>m\u1ed7i<\/sub> = (G \u00d7 1000 \u00d7 60) \/ (2\u03c0 \u00d7 n) = 9549 \u00d7 G \/ n<\/div>\n<div class=\"formula-note\">K\u1ebft qu\u1ea3 t\u00ednh b\u1eb1ng \u00b5m (micromet) \u2014 c\u0169ng b\u1eb1ng g\u00b7mm\/kg<\/div>\n<\/p><\/div>\n<div class=\"formula-box\">\n<div class=\"formula-label\">M\u1ee9c m\u1ea5t c\u00e2n b\u1eb1ng d\u01b0 cho ph\u00e9p (dung sai th\u1ef1c t\u1ebf)<\/div>\n<div class=\"formula-main\">B\u1ea1n<sub>m\u1ed7i<\/sub> = e<sub>m\u1ed7i<\/sub> \u00d7 M = (9549 \u00d7 G \u00d7 M) \/ n<\/div>\n<div class=\"formula-note\">B\u1ea1n<sub>m\u1ed7i<\/sub> trong g\u00b7mm, M trong kg, n trong RPM. H\u1eb1ng s\u1ed1 9549 \u2248 60000\/(2\u03c0).<\/div>\n<\/p><\/div>\n<h3>Hi\u1ec3u v\u1ec1 c\u00e1c bi\u1ebfn s\u1ed1<\/h3>\n<table class=\"article-table\">\n<thead>\n<tr>\n<th>Bi\u1ebfn<\/th>\n<th>T\u00ean<\/th>\n<th>\u0110\u01a1n v\u1ecb<\/th>\n<th>M\u00f4 t\u1ea3<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td class=\"mono\">G<\/td>\n<td>Ch\u1ea5t l\u01b0\u1ee3ng c\u00e2n b\u1eb1ng<\/td>\n<td>mm\/gi\u00e2y<\/td>\n<td>M\u1ee9c ch\u1ea5t l\u01b0\u1ee3ng do ISO quy \u0111\u1ecbnh cho \u1ee9ng d\u1ee5ng (v\u00ed d\u1ee5: 2.5, 6.3)<\/td>\n<\/tr>\n<tr>\n<td class=\"mono\">e<sub>m\u1ed7i<\/sub><\/td>\n<td>M\u1ee9c m\u1ea5t c\u00e2n b\u1eb1ng c\u1ee5 th\u1ec3 cho ph\u00e9p<\/td>\n<td>\u00b5m ho\u1eb7c g\u00b7mm\/kg<\/td>\n<td>\u0110\u1ed9 l\u1ec7ch t\u1ed1i \u0111a cho ph\u00e9p c\u1ee7a t\u00e2m kh\u1ed1i l\u01b0\u1ee3ng so v\u1edbi t\u00e2m h\u00ecnh h\u1ecdc, tr\u00ean m\u1ed7i \u0111\u01a1n v\u1ecb kh\u1ed1i l\u01b0\u1ee3ng.<\/td>\n<\/tr>\n<tr>\n<td class=\"mono\">B\u1ea1n<sub>m\u1ed7i<\/sub><\/td>\n<td>\u0110\u1ed9 m\u1ea5t c\u00e2n b\u1eb1ng d\u01b0 cho ph\u00e9p<\/td>\n<td>g\u00b7mm<\/td>\n<td>Gi\u00e1 tr\u1ecb dung sai cu\u1ed1i c\u00f9ng \u2014 \u0111\u1ed9 m\u1ea5t c\u00e2n b\u1eb1ng t\u1ed1i \u0111a c\u00f2n l\u1ea1i sau khi c\u00e2n b\u1eb1ng<\/td>\n<\/tr>\n<tr>\n<td class=\"mono\">M<\/td>\n<td>Kh\u1ed1i l\u01b0\u1ee3ng r\u00f4to<\/td>\n<td>kg<\/td>\n<td>T\u1ed5ng kh\u1ed1i l\u01b0\u1ee3ng c\u1ee7a r\u00f4to \u0111\u01b0\u1ee3c c\u00e2n b\u1eb1ng<\/td>\n<\/tr>\n<tr>\n<td class=\"mono\">N<\/td>\n<td>T\u1ed1c \u0111\u1ed9 v\u1eadn h\u00e0nh t\u1ed1i \u0111a<\/td>\n<td>v\u00f2ng quay m\u1ed7i ph\u00fat<\/td>\n<td>T\u1ed1c \u0111\u1ed9 v\u1eadn h\u00e0nh cao nh\u1ea5t m\u00e0 r\u00f4to s\u1ebd \u0111\u1ea1t \u0111\u01b0\u1ee3c trong qu\u00e1 tr\u00ecnh ho\u1ea1t \u0111\u1ed9ng<\/td>\n<\/tr>\n<tr>\n<td class=\"mono\">\u03c9<\/td>\n<td>V\u1eadn t\u1ed1c g\u00f3c<\/td>\n<td>rad\/s<\/td>\n<td>\u03c9 = 2\u03c0 \u00d7 n\/60; \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong \u0111\u1ecbnh ngh\u0129a c\u01a1 b\u1ea3n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<div class=\"info-box warning\">\n<div class=\"box-title\">Quan tr\u1ecdng: H\u00e3y s\u1eed d\u1ee5ng t\u1ed1c \u0111\u1ed9 d\u1ecbch v\u1ee5 t\u1ed1i \u0111a.<\/div>\n<p>T\u1ed1c \u0111\u1ed9 quay (RPM) trong c\u00f4ng th\u1ee9c ph\u1ea3i l\u00e0 t\u1ed1c \u0111\u1ed9 t\u1ed1i \u0111a m\u00e0 r\u00f4to s\u1ebd \u0111\u1ea1t \u0111\u01b0\u1ee3c trong qu\u00e1 tr\u00ecnh ho\u1ea1t \u0111\u1ed9ng th\u1ef1c t\u1ebf \u2014 ch\u1ee9 kh\u00f4ng ph\u1ea3i t\u1ed1c \u0111\u1ed9 c\u1ee7a m\u00e1y c\u00e2n b\u1eb1ng. M\u1ed9t r\u00f4to \u0111\u01b0\u1ee3c c\u00e2n b\u1eb1ng tr\u00ean m\u00e1y c\u00e2n b\u1eb1ng t\u1ed1c \u0111\u1ed9 ch\u1eadm \u1edf m\u1ee9c 300 RPM nh\u01b0ng ho\u1ea1t \u0111\u1ed9ng \u1edf t\u1ed1c \u0111\u1ed9 12.000 RPM th\u00ec dung sai c\u1ee7a n\u00f3 ph\u1ea3i \u0111\u01b0\u1ee3c t\u00ednh to\u00e1n \u1edf t\u1ed1c \u0111\u1ed9 12.000 RPM. M\u00e1y c\u00e2n b\u1eb1ng s\u1ebd hi\u1ec7u ch\u1ec9nh theo dung sai, nh\u01b0ng dung sai n\u00e0y \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh b\u1edfi t\u1ed1c \u0111\u1ed9 v\u1eadn h\u00e0nh.<\/p>\n<\/p><\/div>\n<h3>Gi\u1ea3i th\u00edch h\u00ecnh h\u1ecdc<\/h3>\n<p>Ti\u00eau chu\u1ea9n ISO s\u1eed d\u1ee5ng bi\u1ec3u \u0111\u1ed3 logarit v\u1edbi t\u1ed1c \u0111\u1ed9 quay c\u1ee7a r\u00f4to (RPM) tr\u00ean tr\u1ee5c ho\u00e0nh v\u00e0 \u0111\u1ed9 m\u1ea5t c\u00e2n b\u1eb1ng ri\u00eang cho ph\u00e9p (e) tr\u00ean tr\u1ee5c tung.<sub>m\u1ed7i<\/sub> (t\u00ednh b\u1eb1ng g\u00b7mm\/kg) tr\u00ean tr\u1ee5c tung. M\u1ed7i c\u1ea5p \u0111\u1ed9 G \u0111\u01b0\u1ee3c th\u1ec3 hi\u1ec7n b\u1eb1ng m\u1ed9t \u0111\u01b0\u1eddng ch\u00e9o th\u1eb3ng tr\u00ean bi\u1ec3u \u0111\u1ed3 log-log n\u00e0y. H\u00ecnh \u1ea3nh tr\u1ef1c quan trang nh\u00e3 n\u00e0y cho th\u1ea5y r\u1eb1ng:<\/p>\n<ul>\n<li>\u0110\u1ed1i v\u1edbi b\u1ea5t k\u1ef3 c\u1ea5p \u0111\u1ed9 G n\u00e0o, vi\u1ec7c t\u0103ng g\u1ea5p \u0111\u00f4i t\u1ed1c \u0111\u1ed9 s\u1ebd l\u00e0m gi\u1ea3m m\u1ed9t n\u1eeda \u0111\u1ed9 m\u1ea5t c\u00e2n b\u1eb1ng c\u1ee5 th\u1ec3 cho ph\u00e9p.<\/li>\n<li>C\u00e1c \u0111\u01b0\u1eddng k\u1ebb G-grade li\u1ec1n k\u1ec1 c\u00e1ch nhau m\u1ed9t h\u1ec7 s\u1ed1 2,5 (s\u1ef1 ti\u1ebfn tri\u1ec3n l\u00e0: 0,4, 1,0, 2,5, 6,3, 16, 40, 100, 250, 630, 1600, 4000)<\/li>\n<li>Kho\u1ea3ng c\u00e1ch logarit c\u00f3 ngh\u0129a l\u00e0 m\u1ed7i c\u1ea5p \u0111\u1ed9 th\u1ec3 hi\u1ec7n s\u1ef1 thay \u0111\u1ed5i c\u1ea3m nh\u1eadn v\u1ec1 m\u1ee9c \u0111\u1ed9 rung \u0111\u1ed9ng g\u1ea7n nh\u01b0 nhau.<\/li>\n<\/ul>\n<h2 id=\"selecting\">L\u1ef1a ch\u1ecdn c\u1ea5p \u0111\u1ed9 G ph\u00f9 h\u1ee3p cho \u1ee9ng d\u1ee5ng c\u1ee7a b\u1ea1n<\/h2>\n<p>Vi\u1ec7c l\u1ef1a ch\u1ecdn c\u1ea5p \u0111\u1ed9 G ph\u00f9 h\u1ee3p \u0111\u00f2i h\u1ecfi ph\u1ea3i c\u00e2n b\u1eb1ng (kh\u00f4ng ph\u1ea3i n\u00f3i \u0111\u00f9a) nhi\u1ec1u y\u1ebfu t\u1ed1: \u1ee9ng d\u1ee5ng d\u1ef1 \u0111\u1ecbnh c\u1ee7a r\u00f4to, t\u1ed1c \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng, \u0111\u1ed9 c\u1ee9ng c\u1ee7a k\u1ebft c\u1ea5u \u0111\u1ee1, lo\u1ea1i \u1ed5 tr\u1ee5c v\u00e0 m\u1ee9c \u0111\u1ed9 rung \u0111\u1ed9ng cho ph\u00e9p. Ti\u00eau chu\u1ea9n ISO cung c\u1ea5p h\u01b0\u1edbng d\u1eabn th\u00f4ng qua b\u1ea3ng \u1ee9ng d\u1ee5ng c\u1ee7a n\u00f3, nh\u01b0ng c\u1ea7n l\u01b0u \u00fd m\u1ed9t s\u1ed1 y\u1ebfu t\u1ed1 th\u1ef1c ti\u1ec5n sau:<\/p>\n<h3>C\u00e1c y\u1ebfu t\u1ed1 quy\u1ebft \u0111\u1ecbnh<\/h3>\n<ul>\n<li><strong>T\u1ed1c \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng:<\/strong> C\u00e1c rotor t\u1ed1c \u0111\u1ed9 cao n\u00f3i chung c\u1ea7n c\u00e1c c\u1ea5p \u0111\u1ed9 ch\u1eb7t ch\u1ebd h\u01a1n v\u00ec <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/centrifugal-force\/\">l\u1ef1c ly t\u00e2m<\/a> t\u1eeb m\u1ea5t c\u00e2n b\u1eb1ng t\u0103ng v\u1edbi b\u00ecnh ph\u01b0\u01a1ng t\u1ed1c \u0111\u1ed9 (F = m \u00d7 e \u00d7 \u03c9\u00b2). M\u1ed9t rotor \u1edf 30.000 RPM t\u1ea1o ra l\u1ef1c g\u1ea5p 100 l\u1ea7n t\u1eeb c\u00f9ng m\u1ea5t c\u00e2n b\u1eb1ng so v\u1edbi m\u1ed9t rotor \u1edf 3.000 RPM.<\/li>\n<li><strong>Lo\u1ea1i \u1ed5 tr\u1ee5c:<\/strong> C\u00e1c \u1ed5 tr\u1ee5c v\u1edbi y\u1ebfu t\u1ed1 l\u0103n k\u00e9m khoan dung h\u01a1n v\u1edbi m\u1ea5t c\u00e2n b\u1eb1ng so v\u1edbi \u1ed5 tr\u1ee5c phim ch\u1ea5t l\u1ecfng (<a href=\"https:\/\/vibromera.eu\/vi\/glossary\/journal-bearing\/\">tr\u1ee5c<\/a>) \u1ed5 tr\u1ee5c. C\u00e1c m\u00e1y m\u00f3c c\u00f3 \u1ed5 tr\u1ee5c v\u1edbi y\u1ebfu t\u1ed1 l\u0103n c\u00f3 th\u1ec3 c\u1ea7n m\u1ed9t c\u1ea5p \u0111\u1ed9 ch\u1eb7t ch\u1ebd h\u01a1n so v\u1edbi khuy\u1ebfn ngh\u1ecb ti\u00eau chu\u1ea9n.<\/li>\n<li><strong>\u0110\u1ed9 c\u1ee9ng c\u1ee7a gi\u00e1 \u0111\u1ee1:<\/strong> C\u00e1c lo\u1ea1i gi\u00e1 \u0111\u1ee1 linh ho\u1ea1t (gi\u00e1 \u0111\u1ee1 cao su, b\u1ed9 gi\u1ea3m ch\u1ea5n l\u00f2 xo) khu\u1ebfch \u0111\u1ea1i s\u1ef1 truy\u1ec1n rung \u0111\u1ed9ng \u00edt h\u01a1n so v\u1edbi gi\u00e1 \u0111\u1ee1 c\u1ee9ng nh\u01b0ng c\u00f3 th\u1ec3 g\u00e2y ra v\u1ea5n \u0111\u1ec1 c\u1ed9ng h\u01b0\u1edfng. M\u00e1y m\u00f3c \u0111\u01b0\u1ee3c g\u1eafn c\u1ed1 \u0111\u1ecbnh d\u1ec5 b\u1ecb m\u1ea5t c\u00e2n b\u1eb1ng h\u01a1n.<\/li>\n<li><strong>Y\u00eau c\u1ea7u v\u1ec1 m\u00f4i tr\u01b0\u1eddng:<\/strong> C\u00e1c \u1ee9ng d\u1ee5ng y\u00eau c\u1ea7u \u0111\u1ed9 \u1ed3n th\u1ea5p (h\u1ec7 th\u1ed1ng HVAC trong b\u1ec7nh vi\u1ec7n, ph\u00f2ng thu \u00e2m) ho\u1eb7c \u0111\u1ed9 rung th\u1ea5p (s\u1ea3n xu\u1ea5t ch\u1ea5t b\u00e1n d\u1eabn, ph\u00f2ng th\u00ed nghi\u1ec7m quang h\u1ecdc) c\u00f3 th\u1ec3 c\u1ea7n m\u1ee9c \u0111\u1ed9 c\u00e1ch \u00e2m cao h\u01a1n ti\u00eau chu\u1ea9n c\u1ea5p 1-2.<\/li>\n<li><strong>Tu\u1ed5i th\u1ecd d\u1ef1 ki\u1ebfn c\u1ee7a \u1ed5 tr\u1ee5c:<\/strong> N\u1ebfu tu\u1ed5i th\u1ecd v\u00f2ng bi k\u00e9o d\u00e0i l\u00e0 y\u1ebfu t\u1ed1 quan tr\u1ecdng (c\u00e1c gi\u00e0n khoan ngo\u00e0i kh\u01a1i, c\u00e1c c\u00f4ng tr\u00ecnh l\u1eafp \u0111\u1eb7t \u1edf v\u00f9ng xa), vi\u1ec7c ch\u1ec9 \u0111\u1ecbnh c\u1ea5p G ch\u1eb7t h\u01a1n s\u1ebd gi\u1ea3m t\u1ea3i tr\u1ecdng \u0111\u1ed9ng l\u00ean v\u00f2ng bi, tr\u1ef1c ti\u1ebfp k\u00e9o d\u00e0i tu\u1ed5i th\u1ecd L10 c\u1ee7a ch\u00fang. <a href=\"https:\/\/vibromera.eu\/vi\/calculators\/bearing-load\/\">L10 life<\/a>.<\/li>\n<\/ul>\n<h3>C\u00e1c khuy\u1ebfn ngh\u1ecb d\u00e0nh ri\u00eang cho t\u1eebng ng\u00e0nh<\/h3>\n<table class=\"article-table\">\n<thead>\n<tr>\n<th>Ng\u00e0nh\/\u1ee8ng d\u1ee5ng<\/th>\n<th>C\u1ea5p G \u0111i\u1ec3n h\u00ecnh<\/th>\n<th>Ghi ch\u00fa<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Ph\u00e1t \u0111i\u1ec7n (tuabin)<\/td>\n<td class=\"mono\">C\u1ee1 G 2.5 ho\u1eb7c nh\u1ecf h\u01a1n<\/td>\n<td>C\u00e1c ti\u00eau chu\u1ea9n API th\u01b0\u1eddng y\u00eau c\u1ea7u m\u1ee9c t\u01b0\u01a1ng \u0111\u01b0\u01a1ng G 1.0.<\/td>\n<\/tr>\n<tr>\n<td>D\u1ea7u kh\u00ed (m\u00e1y b\u01a1m, m\u00e1y n\u00e9n)<\/td>\n<td class=\"mono\">G 2.5<\/td>\n<td>API 610\/617 quy \u0111\u1ecbnh 4W\/N \u2248 G 1.0 cho c\u00e1c \u0111i\u1ec1u ki\u1ec7n quan tr\u1ecdng.<\/td>\n<\/tr>\n<tr>\n<td>H\u1ec7 th\u1ed1ng HVAC (qu\u1ea1t, m\u00e1y th\u1ed5i)<\/td>\n<td class=\"mono\">G 6.3<\/td>\n<td>G 2.5 d\u00e0nh cho c\u00e1c \u1ee9ng d\u1ee5ng nh\u1ea1y c\u1ea3m v\u1edbi ti\u1ebfng \u1ed3n<\/td>\n<\/tr>\n<tr>\n<td>M\u00e1y c\u00f4ng c\u1ee5<\/td>\n<td class=\"mono\">G 1.0 \u2013 G 2.5<\/td>\n<td>Tr\u1ee5c m\u00e0i c\u00f3 th\u1ec3 y\u00eau c\u1ea7u G 0.4<\/td>\n<\/tr>\n<tr>\n<td>M\u00e1y in\/gi\u1ea5y<\/td>\n<td class=\"mono\">G 2.5 \u2013 G 6.3<\/td>\n<td>T\u00f9y thu\u1ed9c v\u00e0o t\u1ed1c \u0111\u1ed9 tr\u1ee5c l\u0103n v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng in.<\/td>\n<\/tr>\n<tr>\n<td>Khai th\u00e1c m\u1ecf\/xi m\u0103ng (m\u00e1y nghi\u1ec1n, m\u00e1y xay)<\/td>\n<td class=\"mono\">G 6.3 \u2013 G 16<\/td>\n<td>M\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t; c\u00f3 th\u1ec3 kh\u00f4ng \u0111\u1ea1t \u0111\u01b0\u1ee3c m\u1ee9c \u0111\u1ed9 ch\u1eb7t ch\u1ebd h\u01a1n.<\/td>\n<\/tr>\n<tr>\n<td>\u00d4 t\u00f4 (tr\u1ee5c khu\u1ef7u)<\/td>\n<td class=\"mono\">G 16 \u2013 G 40<\/td>\n<td>Xe con th\u01b0\u1eddng d\u00f9ng G 16; xe t\u1ea3i G 25\u201340<\/td>\n<\/tr>\n<tr>\n<td>Ch\u1ebf bi\u1ebfn th\u1ef1c ph\u1ea9m<\/td>\n<td class=\"mono\">G 6.3<\/td>\n<td>Thi\u1ebft k\u1ebf theo ti\u00eau chu\u1ea9n v\u1ec7 sinh c\u00f3 th\u1ec3 h\u1ea1n ch\u1ebf c\u00e1c ph\u01b0\u01a1ng ph\u00e1p \u0111i\u1ec1u ch\u1ec9nh.<\/td>\n<\/tr>\n<tr>\n<td>Ch\u1ebf bi\u1ebfn g\u1ed7 (l\u01b0\u1ee1i c\u01b0a, m\u00e1y b\u00e0o)<\/td>\n<td class=\"mono\">G 2.5 \u2013 G 6.3<\/td>\n<td>Y\u00eau c\u1ea7u c\u1ea5p \u0111\u1ed9 cao h\u01a1n \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng b\u1ec1 m\u1eb7t<\/td>\n<\/tr>\n<tr>\n<td>\u0110\u1ed9ng c\u01a1 \u0111i\u1ec7n (chung)<\/td>\n<td class=\"mono\">G 2.5<\/td>\n<td>Ti\u00eau chu\u1ea9n IEC 60034-14 \u0111\u1ec1 c\u1eadp \u0111\u1ebfn \u0111i\u1ec1u n\u00e0y \u0111\u1ed1i v\u1edbi h\u1ea7u h\u1ebft c\u00e1c \u0111\u1ed9ng c\u01a1.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2 id=\"practical\">V\u00ed d\u1ee5 t\u00ednh to\u00e1n th\u1ef1c t\u1ebf<\/h2>\n<div class=\"example-block\">\n<div class=\"example-title\">V\u00ed d\u1ee5 1: B\u00e1nh c\u00f4ng t\u00e1c b\u01a1m ly t\u00e2m<\/div>\n<p><strong>\u0110\u01b0\u1ee3c cho:<\/strong> C\u00e1nh qu\u1ea1t b\u01a1m, kh\u1ed1i l\u01b0\u1ee3ng = 12 kg, t\u1ed1c \u0111\u1ed9 v\u1eadn h\u00e0nh t\u1ed1i \u0111a = 2950 v\u00f2ng\/ph\u00fat, \u1ee9ng d\u1ee5ng: nh\u00e0 m\u00e1y ch\u1ebf bi\u1ebfn \u2192 ISO khuy\u1ebfn ngh\u1ecb G 6.3.<\/p>\n<p><strong>B\u01b0\u1edbc 1 \u2014 T\u00ednh to\u00e1n \u0111\u1ed9 m\u1ea5t c\u00e2n b\u1eb1ng c\u1ee5 th\u1ec3:<\/strong><\/p>\n<p>e<sub>m\u1ed7i<\/sub> = 9549 \u00d7 G \/ n = 9549 \u00d7 6,3 \/ 2950 = <strong>20,4 \u00b5m<\/strong> (ho\u1eb7c 20,4 g\u00b7mm\/kg)<\/p>\n<p><strong>B\u01b0\u1edbc 2 \u2014 T\u00ednh to\u00e1n t\u1ed5ng s\u1ed1 d\u01b0 cho ph\u00e9p:<\/strong><\/p>\n<p>B\u1ea1n<sub>m\u1ed7i<\/sub> = e<sub>m\u1ed7i<\/sub> \u00d7 M = 20,4 \u00d7 12 = <strong>244,8 g\u00b7mm<\/strong><\/p>\n<p><strong>Gi\u1ea3i th\u00edch:<\/strong> \u0110\u1ed9 l\u1ec7ch d\u01b0 sau khi c\u00e2n b\u1eb1ng kh\u00f4ng \u0111\u01b0\u1ee3c v\u01b0\u1ee3t qu\u00e1 244,8 g\u00b7mm. N\u1ebfu c\u00e2n b\u1eb1ng tr\u00ean m\u1ed9t m\u1eb7t ph\u1eb3ng duy nh\u1ea5t, \u0111\u00e2y l\u00e0 t\u1ed5ng dung sai. N\u1ebfu c\u00e2n b\u1eb1ng tr\u00ean hai m\u1eb7t ph\u1eb3ng, t\u1ed5ng dung sai n\u00e0y ph\u1ea3i \u0111\u01b0\u1ee3c ph\u00e2n b\u1ed5 gi\u1eefa hai m\u1eb7t ph\u1eb3ng hi\u1ec7u ch\u1ec9nh (th\u01b0\u1eddng l\u00e0 50\/50 \u0111\u1ed1i v\u1edbi r\u00f4to \u0111\u1ed1i x\u1ee9ng).<\/p>\n<\/p><\/div>\n<div class=\"example-block\">\n<div class=\"example-title\">V\u00ed d\u1ee5 2: C\u00e1nh qu\u1ea1t c\u00f4ng nghi\u1ec7p<\/div>\n<p><strong>\u0110\u01b0\u1ee3c cho:<\/strong> C\u1ee5m r\u00f4to qu\u1ea1t, kh\u1ed1i l\u01b0\u1ee3ng = 85 kg, t\u1ed1c \u0111\u1ed9 t\u1ed1i \u0111a = 1480 v\u00f2ng\/ph\u00fat, \u1ee9ng d\u1ee5ng: th\u00f4ng gi\u00f3 \u2192 G 6.3.<\/p>\n<p><strong>T\u00ednh to\u00e1n:<\/strong><\/p>\n<p>B\u1ea1n<sub>m\u1ed7i<\/sub> = (9549 \u00d7 6,3 \u00d7 85) \/ 1480 = <strong>3454 g\u00b7mm<\/strong><\/p>\n<p>e<sub>m\u1ed7i<\/sub> = 3454 \/ 85 = <strong>40,6 \u00b5m<\/strong><\/p>\n<p><strong>\u0110\u1ed1i v\u1edbi vi\u1ec7c c\u00e2n b\u1eb1ng tr\u00ean hai m\u1eb7t ph\u1eb3ng:<\/strong> B\u1ea1n<sub>m\u1ed7i<\/sub> m\u1ed7i m\u1eb7t ph\u1eb3ng \u2248 3454 \/ 2 = <strong>1727 g\u00b7mm tr\u00ean m\u1ed7i m\u1eb7t ph\u1eb3ng<\/strong><\/p>\n<\/p><\/div>\n<div class=\"example-block\">\n<div class=\"example-title\">V\u00ed d\u1ee5 3: R\u00f4to t\u0103ng \u00e1p (T\u1ed1c \u0111\u1ed9 cao)<\/div>\n<p><strong>\u0110\u01b0\u1ee3c cho:<\/strong> R\u00f4to b\u1ed9 t\u0103ng \u00e1p, kh\u1ed1i l\u01b0\u1ee3ng = 0,8 kg, t\u1ed1c \u0111\u1ed9 t\u1ed1i \u0111a = 90.000 v\u00f2ng\/ph\u00fat, \u1ee9ng d\u1ee5ng: b\u1ed9 t\u0103ng \u00e1p \u00f4 t\u00f4 \u2192 G 2.5.<\/p>\n<p><strong>T\u00ednh to\u00e1n:<\/strong><\/p>\n<p>B\u1ea1n<sub>m\u1ed7i<\/sub> = (9549 \u00d7 2,5 \u00d7 0,8) \/ 90000 = <strong>0,212 g\u00b7mm<\/strong><\/p>\n<p>e<sub>m\u1ed7i<\/sub> = 0.212 \/ 0.8 = <strong>0,265 \u00b5m<\/strong><\/p>\n<p><strong>L\u01b0u \u00fd:<\/strong> \u1ede t\u1ed1c \u0111\u1ed9 c\u1ef1c cao, dung sai tr\u1edf n\u00ean v\u00f4 c\u00f9ng nh\u1ecf. \u0110\u00f3 l\u00e0 l\u00fd do t\u1ea1i sao vi\u1ec7c c\u00e2n b\u1eb1ng b\u1ed9 t\u0103ng \u00e1p \u0111\u00f2i h\u1ecfi thi\u1ebft b\u1ecb chuy\u00ean d\u1ee5ng c\u00f3 \u0111\u1ed9 ch\u00ednh x\u00e1c cao v\u00e0 t\u1ea1i sao ngay c\u1ea3 nh\u1eefng t\u1ea1p ch\u1ea5t nh\u1ecf (d\u1ea5u v\u00e2n tay, b\u1ee5i b\u1ea9n) c\u0169ng c\u00f3 th\u1ec3 \u0111\u1ea9y \u0111\u1ed9 m\u1ea5t c\u00e2n b\u1eb1ng v\u01b0\u1ee3t qu\u00e1 gi\u1edbi h\u1ea1n cho ph\u00e9p.<\/p>\n<\/p><\/div>\n<p>\u0110\u1ed1i v\u1edbi c\u00e1c tr\u01b0\u1eddng h\u1ee3p ph\u1ed5 bi\u1ebfn h\u01a1n \u1edf tr\u00ean \u2014 m\u00e1y b\u01a1m, qu\u1ea1t v\u00e0 c\u00e1c rotor c\u00f4ng nghi\u1ec7p chung ch\u1ea1y \u1edf G 2.5 ho\u1eb7c G 6.3 \u2014 b\u1ea1n c\u00f3 th\u1ec3 \u0111o \u0111\u1ed9 m\u1ea5t c\u00e2n b\u1eb1ng d\u01b0 l\u01b0\u1ee3ng, \u00e1p d\u1ee5ng tr\u1ecdng s\u1ed1 hi\u1ec7u ch\u1ec9nh v\u00e0 x\u00e1c minh k\u1ebft qu\u1ea3 so v\u1edbi l\u1edbp \u0111\u01b0\u1ee3c ch\u1ecdn <em>t\u1ea1i hi\u1ec7n tr\u01b0\u1eddng<\/em> b\u1eb1ng m\u1ed9t thi\u1ebft b\u1ecb c\u1ea7m tay nh\u01b0 <a href=\"https:\/\/vibromera.eu\/vi\/san-pham\/balanset-1\/\">Balanset-1A<\/a>. Nh\u1eadp kh\u1ed1i l\u01b0\u1ee3ng rotor v\u00e0 t\u1ed1c \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng, c\u00e2n b\u1eb1ng m\u00e1y t\u1ea1i ch\u1ed7, v\u00e0 ph\u1ea7n m\u1ec1m b\u00e1o c\u00e1o U<sub>m\u1ed7i<\/sub> c\u00f9ng v\u1edbi m\u1ed9t k\u1ebft qu\u1ea3 \u0111\u1ea1t\/kh\u00f4ng \u0111\u1ea1t r\u00f5 r\u00e0ng so v\u1edbi G-grade m\u1ee5c ti\u00eau \u2014 kh\u00f4ng c\u1ea7n ph\u1ea3i th\u00e1o rotor ho\u1eb7c g\u1eedi \u0111\u1ebfn c\u1eeda h\u00e0ng c\u00e2n b\u1eb1ng.<\/p>\n<div class=\"info-box success\">\n<div class=\"box-title\">Chuy\u1ec3n \u0111\u1ed5i gi\u1eefa c\u00e1c \u0111\u01a1n v\u1ecb<\/div>\n<p>C\u00e1c ph\u00e9p chuy\u1ec3n \u0111\u1ed5i \u0111\u01a1n v\u1ecb th\u01b0\u1eddng d\u00f9ng trong c\u00f4ng vi\u1ec7c c\u00e2n b\u1eb1ng:<\/p>\n<p>1 g\u00b7mm = 1 mg\u00b7m = 0,001 kg\u00b7mm = 1000 \u00b5g\u00b7m<\/p>\n<p>1 oz\u00b7in = 720 g\u00b7mm (h\u1ec7 \u0111o l\u01b0\u1eddng Anh, v\u1eabn \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong m\u1ed9t s\u1ed1 ng\u00e0nh c\u00f4ng nghi\u1ec7p c\u1ee7a M\u1ef9)<\/p>\n<p>e<sub>m\u1ed7i<\/sub> t\u00ednh b\u1eb1ng \u00b5m = e<sub>m\u1ed7i<\/sub> t\u00ednh b\u1eb1ng g\u00b7mm\/kg (v\u1ec1 m\u1eb7t s\u1ed1 h\u1ecdc l\u00e0 nh\u01b0 nhau \u2014 \u0111\u1ed9 l\u1ec7ch t\u00e2m kh\u1ed1i l\u01b0\u1ee3ng b\u1eb1ng \u0111\u1ed9 m\u1ea5t c\u00e2n b\u1eb1ng c\u1ee5 th\u1ec3)<\/p>\n<\/p><\/div>\n<h2 id=\"two-plane\">C\u00e2n b\u1eb1ng hai m\u1eb7t ph\u1eb3ng \u2014 Ph\u00e2n b\u1ed5 dung sai<\/h2>\n<p>C\u00f4ng th\u1ee9c c\u1ea5p G t\u00ednh to\u00e1n <em>t\u1ed5ng c\u1ed9ng<\/em> \u0111\u1ed9 m\u1ea5t c\u00e2n b\u1eb1ng d\u01b0 l\u01b0\u1ee3ng cho ph\u00e9p cho to\u00e0n b\u1ed9 rotor. \u0110\u1ed1i v\u1edbi c\u00e1c rotor c\u1ea7n thi\u1ebft <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/two-plane-balancing\/\">hai m\u1eb7t ph\u1eb3ng<\/a> (<a href=\"https:\/\/vibromera.eu\/vi\/glossary\/dynamic-balancing\/\">\u0111\u1ed9ng<\/a>) c\u00e2n b\u1eb1ng \u2014 \u0111\u00e2y l\u00e0 h\u1ea7u h\u1ebft c\u00e1c rotor c\u00f4ng nghi\u1ec7p n\u01a1i t\u1ef7 l\u1ec7 chi\u1ec1u d\u00e0i tr\u00ean \u0111\u01b0\u1eddng k\u00ednh v\u01b0\u1ee3t qu\u00e1 kho\u1ea3ng 0,5 \u2014 c\u00f4ng su\u1ea5t t\u1ed5ng n\u00e0y ph\u1ea3i \u0111\u01b0\u1ee3c ph\u00e2n b\u1ed5 gi\u1eefa hai <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/correction-plane\/\">m\u1eb7t ph\u1eb3ng hi\u1ec7u ch\u1ec9nh<\/a>.<\/p>\n<h3>H\u01b0\u1edbng d\u1eabn c\u1ee7a ISO v\u1ec1 ph\u00e2n b\u1ed5 dung sai<\/h3>\n<p>ISO 21940-11 cung c\u1ea5p h\u01b0\u1edbng d\u1eabn v\u1ec1 c\u00e1ch ph\u00e2n chia c\u00f4ng su\u1ea5t t\u1ed5ng gi\u1eefa c\u00e1c m\u1eb7t ph\u1eb3ng d\u1ef1a tr\u00ean h\u00ecnh h\u1ecdc rotor&#8217;s:<\/p>\n<ul>\n<li><strong>R\u00f4to \u0111\u1ed1i x\u1ee9ng<\/strong> (Tr\u1ecdng t\u00e2m n\u1eb1m \u1edf gi\u1eefa hai m\u1eb7t ph\u1eb3ng): Chia \u0111\u1ec1u 50\/50 gi\u1eefa hai m\u1eb7t ph\u1eb3ng hi\u1ec7u ch\u1ec9nh.<\/li>\n<li><strong>R\u00f4to b\u1ea5t \u0111\u1ed1i x\u1ee9ng<\/strong> (T\u00e2m tr\u1ecdng l\u1ef1c g\u1ea7n m\u1ed9t m\u1eb7t ph\u1eb3ng h\u01a1n): Ph\u00e2n b\u1ed5 theo t\u1ef7 l\u1ec7 \u2014 m\u1eb7t ph\u1eb3ng g\u1ea7n t\u00e2m tr\u1ecdng l\u1ef1c h\u01a1n s\u1ebd nh\u1eadn \u0111\u01b0\u1ee3c ph\u1ea7n dung sai l\u1edbn h\u01a1n. Ti\u00eau chu\u1ea9n cung c\u1ea5p c\u00e1c c\u00f4ng th\u1ee9c cho ph\u00e9p t\u00ednh n\u00e0y.<\/li>\n<li><strong>Nguy\u00ean t\u1eafc chung:<\/strong> B\u1ea1n<sub>A<\/sub> \/ U<sub>B<\/sub> = L<sub>B<\/sub> \/ L<sub>A<\/sub>, trong \u0111\u00f3 L<sub>A<\/sub> v\u00e0 L<sub>B<\/sub> v\u00e0 l\u00e0 kho\u1ea3ng c\u00e1ch t\u1eeb t\u00e2m tr\u1ecdng l\u1ef1c \u0111\u1ebfn m\u1eb7t ph\u1eb3ng A v\u00e0 B t\u01b0\u01a1ng \u1ee9ng.<\/li>\n<\/ul>\n<div class=\"info-box warning\">\n<div class=\"box-title\">M\u1ea5t c\u00e2n b\u1eb1ng t\u0129nh so v\u1edbi m\u1ea5t c\u00e2n b\u1eb1ng ng\u1eabu l\u1ef1c<\/div>\n<p>Khi t\u1ed5ng \u0111\u1ed9 m\u1ea5t c\u00e2n b\u1eb1ng d\u01b0 \u0111\u01b0\u1ee3c chia \u0111\u1ec1u gi\u1eefa hai m\u1eb7t ph\u1eb3ng, th\u00ec <em>t\u1ed5ng vect\u01a1<\/em> t\u1ed5ng vect\u01a1 c\u1ee7a \u0111\u1ed9 m\u1ea5t c\u00e2n b\u1eb1ng \u1edf hai m\u1eb7t ph\u1eb3ng kh\u00f4ng \u0111\u01b0\u1ee3c v\u01b0\u1ee3t qu\u00e1 U<sub>m\u1ed7i<\/sub>. Ch\u1ec9 ki\u1ec3m tra t\u1eebng m\u1eb7t ph\u1eb3ng \u0111\u1ed9c l\u1eadp so v\u1edbi n\u1eeda t\u1ed5ng c\u00f3 th\u1ec3 b\u1ecf l\u1ee1 m\u1ed9t \u0111i\u1ec1u ki\u1ec7n m\u00e0 c\u1ea3 hai m\u1eb7t ph\u1eb3ng \u0111\u1ec1u c\u00f3 \u0111\u1ed9 m\u1ea5t c\u00e2n b\u1eb1ng ch\u1ea5p nh\u1eadn \u0111\u01b0\u1ee3c nh\u01b0ng s\u1ef1 k\u1ebft h\u1ee3p (\u0111\u1eb7c bi\u1ec7t <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/couple-unbalance\/\">c\u1eb7p \u0111\u00f4i m\u1ea5t c\u00e2n b\u1eb1ng<\/a>) v\u01b0\u1ee3t qu\u00e1 gi\u1edbi h\u1ea1n. C\u00e1c m\u00e1y c\u00e2n b\u1eb1ng hi\u1ec7n \u0111\u1ea1i th\u01b0\u1eddng ki\u1ec3m tra c\u1ea3 c\u00f4ng su\u1ea5t m\u1eb7t ph\u1eb3ng ri\u00eang l\u1ebb v\u00e0 d\u01b0 l\u01b0\u1ee3ng t\u1ed5ng.<\/p>\n<\/p><\/div>\n<h3>Khi n\u00e0o th\u00ec c\u00e2n b\u1eb1ng tr\u00ean m\u1ed9t m\u1eb7t ph\u1eb3ng duy nh\u1ea5t l\u00e0 \u0111\u1ee7?<\/h3>\n<p><a href=\"https:\/\/vibromera.eu\/vi\/glossary\/single-plane-balancing\/\">M\u1ed9t m\u1eb7t ph\u1eb3ng<\/a> (<a href=\"https:\/\/vibromera.eu\/vi\/glossary\/static-balancing\/\">t\u0129nh<\/a>) c\u00e2n b\u1eb1ng l\u00e0 \u0111\u1ee7 khi:<\/p>\n<ul>\n<li>R\u00f4to l\u00e0 m\u1ed9t \u0111\u0129a m\u1ecfng (t\u1ef7 l\u1ec7 L\/D nh\u1ecf h\u01a1n kho\u1ea3ng 0,5).<\/li>\n<li>T\u1ed1c \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng t\u1ed1t d\u01b0\u1edbi t\u1ea7n s\u1ed1 t\u1ef1 nhi\u00ean \u0111\u1ea7u ti\u00ean <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/critical-speed\/\">t\u1ed1c \u0111\u1ed9 t\u1edbi h\u1ea1n<\/a><\/li>\n<li>\u1ee8ng d\u1ee5ng kh\u00f4ng y\u00eau c\u1ea7u \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ef1c k\u1ef3 cao (G 6.3 ho\u1eb7c th\u00f4 h\u01a1n)<\/li>\n<li>V\u00ed d\u1ee5: c\u00e1nh qu\u1ea1t, \u0111\u00e1 m\u00e0i, r\u00f2ng r\u1ecdc, \u0111\u0129a phanh, b\u00e1nh \u0111\u00e0<\/li>\n<\/ul>\n<p>C\u1ea7n c\u00e2n b\u1eb1ng hai m\u1eb7t ph\u1eb3ng khi r\u00f4to c\u00f3 chi\u1ec1u d\u00e0i tr\u1ee5c \u0111\u00e1ng k\u1ec3, khi d\u1ef1 ki\u1ebfn c\u00f3 s\u1ef1 m\u1ea5t c\u00e2n b\u1eb1ng m\u00f4-men xo\u1eafn (v\u00ed d\u1ee5: sau khi l\u1eafp r\u00e1p t\u1eeb nhi\u1ec1u b\u1ed9 ph\u1eadn) ho\u1eb7c khi c\u1ea7n \u0111\u1ed9 ch\u00ednh x\u00e1c cao.<\/p>\n<h2 id=\"common-mistakes\">Nh\u1eefng sai l\u1ea7m v\u00e0 quan ni\u1ec7m sai l\u1ea7m ph\u1ed5 bi\u1ebfn<\/h2>\n<h3>1. S\u1eed d\u1ee5ng t\u1ed1c \u0111\u1ed9 c\u00e2n b\u1eb1ng thay v\u00ec t\u1ed1c \u0111\u1ed9 d\u1ecbch v\u1ee5<\/h3>\n<p>Sai s\u00f3t nghi\u00eam tr\u1ecdng nh\u1ea5t trong c\u00e1c ph\u00e9p t\u00ednh c\u1ea5p G. C\u00f4ng th\u1ee9c dung sai y\u00eau c\u1ea7u <em>t\u1ed1c \u0111\u1ed9 v\u1eadn h\u00e0nh t\u1ed1i \u0111a<\/em> \u2014 t\u1ed1c \u0111\u1ed9 quay cao nh\u1ea5t m\u00e0 r\u00f4to \u0111\u1ea1t \u0111\u01b0\u1ee3c trong qu\u00e1 tr\u00ecnh ho\u1ea1t \u0111\u1ed9ng th\u1ef1c t\u1ebf. M\u00e1y c\u00e2n b\u1eb1ng t\u1ed1c \u0111\u1ed9 th\u1ea5p c\u00f3 th\u1ec3 ho\u1ea1t \u0111\u1ed9ng \u1edf t\u1ed1c \u0111\u1ed9 300\u2013600 v\u00f2ng\/ph\u00fat, nh\u01b0ng dung sai ph\u1ea3i \u0111\u01b0\u1ee3c t\u00ednh to\u00e1n \u1edf t\u1ed1c \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng (v\u00ed d\u1ee5: 3600 v\u00f2ng\/ph\u00fat). S\u1eed d\u1ee5ng t\u1ed1c \u0111\u1ed9 c\u00e2n b\u1eb1ng s\u1ebd cho dung sai l\u1edbn h\u01a1n 6\u201312 l\u1ea7n.<\/p>\n<h3>2. Nh\u1ea7m l\u1eabn gi\u1eefa c\u1ea5p \u0111\u1ed9 G v\u00e0 m\u1ee9c \u0111\u1ed9 rung \u0111\u1ed9ng.<\/h3>\n<p>G 2.5 kh\u00f4ng c\u00f3 ngh\u0129a l\u00e0 m\u00e1y s\u1ebd rung v\u1edbi t\u1ed1c \u0111\u1ed9 2,5 mm\/s. C\u1ea5p \u0111\u1ed9 G m\u00f4 t\u1ea3 v\u1eadn t\u1ed1c ngo\u1ea1i vi c\u1ee7a t\u00e2m kh\u1ed1i l\u01b0\u1ee3ng, ch\u1ee9 kh\u00f4ng ph\u1ea3i \u0111\u1ed9 rung \u0111o \u0111\u01b0\u1ee3c tr\u00ean v\u1ecf m\u00e1y. \u0110\u1ed9 rung th\u1ef1c t\u1ebf ph\u1ee5 thu\u1ed9c v\u00e0o nhi\u1ec1u y\u1ebfu t\u1ed1 kh\u00e1c: \u0111\u1ed9 c\u1ee9ng c\u1ee7a \u1ed5 tr\u1ee5c, c\u1ea5u tr\u00fac \u0111\u1ee1, \u0111\u1ed9 gi\u1ea3m ch\u1ea5n v\u00e0 c\u00e1c ngu\u1ed3n rung kh\u00e1c. M\u1ed9t m\u00e1y \u0111\u01b0\u1ee3c c\u00e2n b\u1eb1ng theo G 2.5 c\u00f3 th\u1ec3 \u0111o \u0111\u01b0\u1ee3c \u0111\u1ed9 rung 0,5 mm\/s ho\u1eb7c 5 mm\/s tr\u00ean v\u1ecf m\u00e1y t\u00f9y thu\u1ed9c v\u00e0o c\u00e1c y\u1ebfu t\u1ed1 n\u00e0y.<\/p>\n<h3>3. Quy \u0111\u1ecbnh \u0111\u1ed9 ch\u00ednh x\u00e1c qu\u00e1 m\u1ee9c<\/h3>\n<p>Ch\u1ec9 \u0111\u1ecbnh G 1.0 khi G 6.3 l\u00e0 \u0111\u1ee7 l\u00e3ng ph\u00ed th\u1eddi gian v\u00e0 ti\u1ec1n b\u1ea1c. M\u1ed7i b\u01b0\u1edbc ch\u1eb7t h\u01a1n trong G-grade s\u1ebd g\u1ea7n nh\u01b0 g\u1ea5p \u0111\u00f4i n\u1ed7 l\u1ef1c c\u00e2n b\u1eb1ng v\u00e0 chi ph\u00ed. M\u1ed9t c\u00e1nh c\u1eeda m\u00e1y b\u01a1m li t\u00e2m \u0111\u01b0\u1ee3c c\u00e2n b\u1eb1ng \u1edf G 1.0 thay v\u00ec G 6.3 chi ph\u00ed nhi\u1ec1u h\u01a1n \u0111\u00e1ng k\u1ec3 \u0111\u1ec3 c\u00e2n b\u1eb1ng, nh\u01b0ng m\u00e1y b\u01a1m c\u00f3 th\u1ec3 s\u1ebd kh\u00f4ng ch\u1ea1y m\u1ecbn h\u01a1n v\u00ec c\u00e1c ngu\u1ed3n rung \u0111\u1ed9ng kh\u00e1c (<a href=\"https:\/\/vibromera.eu\/vi\/glossary\/misalignment\/\">s\u1ef1 kh\u00f4ng th\u1eb3ng h\u00e0ng<\/a>, <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/hydraulic-forces\/\">l\u1ef1c th\u1ee7y \u0111\u1ed9ng<\/a>, ti\u1ebfng \u1ed3n \u1ed5 tr\u1ee5c) chi\u1ebfm \u01b0u th\u1ebf.<\/p>\n<h3>4. B\u1ecf qua c\u00e1c r\u00e0ng bu\u1ed9c th\u1ef1c t\u1ebf<\/h3>\n<p>Sai s\u1ed1 cho ph\u00e9p t\u00ednh to\u00e1n c\u00f3 th\u1ec3 nh\u1ecf h\u01a1n \u0111\u1ed9 nh\u1ea1y c\u1ee7a m\u00e1y c\u00e2n b\u1eb1ng ho\u1eb7c \u0111\u1ed9 ch\u00ednh x\u00e1c hi\u1ec7u ch\u1ec9nh c\u00f3 th\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c. N\u1ebfu U<sub>m\u1ed7i<\/sub> T\u00ednh to\u00e1n cho th\u1ea5y \u0111\u1ed9 ch\u00ednh x\u00e1c l\u00e0 0,5 g\u00b7mm nh\u01b0ng m\u00e1y c\u00e2n b\u1eb1ng ch\u1ec9 c\u00f3 th\u1ec3 \u0111\u1ea1t \u0111\u1ed9 ph\u00e2n gi\u1ea3i 1 g\u00b7mm, do \u0111\u00f3 kh\u00f4ng th\u1ec3 \u0111\u00e1p \u1ee9ng \u0111\u01b0\u1ee3c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt n\u00e0y n\u1ebfu kh\u00f4ng c\u00f3 thi\u1ebft b\u1ecb t\u1ed1t h\u01a1n. Lu\u00f4n lu\u00f4n ki\u1ec3m tra xem thi\u1ebft b\u1ecb c\u00e2n b\u1eb1ng hi\u1ec7n c\u00f3 c\u00f3 th\u1ef1c s\u1ef1 \u0111\u1ea1t \u0111\u01b0\u1ee3c dung sai quy \u0111\u1ecbnh hay kh\u00f4ng.<\/p>\n<h3>5. Kh\u00f4ng t\u00ednh \u0111\u1ebfn dung sai l\u1eafp gh\u00e9p<\/h3>\n<p>R\u00f4to \u0111\u01b0\u1ee3c c\u00e2n b\u1eb1ng ho\u00e0n h\u1ea3o tr\u00ean m\u00e1y c\u00e2n b\u1eb1ng v\u1eabn c\u00f3 th\u1ec3 b\u1ecb m\u1ea5t c\u00e2n b\u1eb1ng khi l\u1eafp \u0111\u1eb7t do khe h\u1edf r\u00e3nh then, \u0111\u1ed9 l\u1ec7ch t\u00e2m kh\u1edbp n\u1ed1i, s\u1ef1 gi\u00e3n n\u1edf nhi\u1ec7t v\u00e0 dung sai l\u1eafp \u0111\u1eb7t. \u0110\u1ed1i v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng quan tr\u1ecdng, ti\u00eau chu\u1ea9n ISO khuy\u1ebfn ngh\u1ecb d\u00e0nh 20\u201330% trong t\u1ed5ng dung sai cho s\u1ef1 d\u1ecbch chuy\u1ec3n m\u1ea5t c\u00e2n b\u1eb1ng li\u00ean quan \u0111\u1ebfn qu\u00e1 tr\u00ecnh l\u1eafp \u0111\u1eb7t.<\/p>\n<h3>6. \u00c1p d\u1ee5ng ti\u00eau chu\u1ea9n r\u00f4to c\u1ee9ng cho r\u00f4to m\u1ec1m<\/h3>\n<p>Ti\u00eau chu\u1ea9n ISO 21940-11 G-grade \u00e1p d\u1ee5ng cho <em>r\u00f4to c\u1ee9ng<\/em> \u2014 c\u00e1c rotor ho\u1ea1t \u0111\u1ed9ng t\u1ed1t d\u01b0\u1edbi t\u1ea7n s\u1ed1 t\u1ef1 nhi\u00ean \u0111\u1ea7u ti\u00ean c\u1ee7a ch\u00fang. C\u00e1c rotor v\u01b0\u1ee3t qua ho\u1eb7c ho\u1ea1t \u0111\u1ed9ng g\u1ea7n t\u1ea7n s\u1ed1 t\u1ef1 nhi\u00ean (<a href=\"https:\/\/vibromera.eu\/vi\/glossary\/flexible-rotor\/\">r\u00f4to linh ho\u1ea1t<\/a>) y\u00eau c\u1ea7u c\u00e2n b\u1eb1ng theo <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/iso-21940-12\/\">Ti\u00eau chu\u1ea9n ISO 21940-12<\/a>, s\u1eed d\u1ee5ng m\u1ed9t c\u00e1ch ti\u1ebfp c\u1eadn ho\u00e0n to\u00e0n kh\u00e1c. \u00c1p d\u1ee5ng G-grades cho rotor linh ho\u1ea1t c\u00f3 th\u1ec3 nguy hi\u1ec3m kh\u00f4ng \u0111\u1ee7.<\/p>\n<h2 id=\"importance\">T\u1ea1i sao \u0111i\u1ec3m G l\u1ea1i quan tr\u1ecdng?<\/h2>\n<h3>Ti\u00eau chu\u1ea9n h\u00f3a v\u00e0 truy\u1ec1n th\u00f4ng<\/h3>\n<p>Ti\u00eau chu\u1ea9n G cung c\u1ea5p m\u1ed9t ng\u00f4n ng\u1eef chung cho ch\u1ea5t l\u01b0\u1ee3ng c\u00e2n b\u1eb1ng. Nh\u00e0 s\u1ea3n xu\u1ea5t c\u00f3 th\u1ec3 quy \u0111\u1ecbnh r\u1eb1ng c\u00e1nh qu\u1ea1t b\u01a1m ph\u1ea3i \u0111\u01b0\u1ee3c &quot;c\u00e2n b\u1eb1ng theo ti\u00eau chu\u1ea9n G 6.3 theo ISO 21940-11&quot;, v\u00e0 b\u1ea5t k\u1ef3 c\u01a1 s\u1edf c\u00e2n b\u1eb1ng n\u00e0o tr\u00ean to\u00e0n th\u1ebf gi\u1edbi c\u0169ng s\u1ebd hi\u1ec3u ch\u00ednh x\u00e1c \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ea7n thi\u1ebft. \u0110i\u1ec1u n\u00e0y lo\u1ea1i b\u1ecf s\u1ef1 m\u01a1 h\u1ed3, ng\u0103n ng\u1eeba tranh ch\u1ea5p gi\u1eefa nh\u00e0 cung c\u1ea5p v\u00e0 kh\u00e1ch h\u00e0ng, \u0111\u1ed3ng th\u1eddi cho ph\u00e9p ch\u1ea5t l\u01b0\u1ee3ng nh\u1ea5t qu\u00e1n tr\u00ean to\u00e0n chu\u1ed7i cung \u1ee9ng to\u00e0n c\u1ea7u.<\/p>\n<h3>Ng\u0103n ng\u1eeba t\u00ecnh tr\u1ea1ng m\u1ea5t c\u00e2n b\u1eb1ng<\/h3>\n<p>Vi\u1ec7c c\u00e2n b\u1eb1ng r\u00f4to v\u1edbi dung sai ch\u1eb7t ch\u1ebd h\u01a1n m\u1ee9c c\u1ea7n thi\u1ebft r\u1ea5t t\u1ed1n k\u00e9m v\u00e0 m\u1ea5t th\u1eddi gian. M\u1ed7i b\u01b0\u1edbc t\u0103ng \u0111\u1ed9 ch\u00ednh x\u00e1c theo c\u1ea5p G s\u1ebd l\u00e0m t\u0103ng g\u1ea5p \u0111\u00f4i chi ph\u00ed c\u00e2n b\u1eb1ng v\u00ec n\u00f3 \u0111\u00f2i h\u1ecfi nhi\u1ec1u l\u1ea7n hi\u1ec7u ch\u1ec9nh h\u01a1n, kh\u1ea3 n\u0103ng \u0111o l\u01b0\u1eddng ch\u00ednh x\u00e1c h\u01a1n v\u00e0 th\u1eddi gian gia c\u00f4ng l\u00e2u h\u01a1n. C\u00e1c c\u1ea5p G gi\u00fap c\u00e1c k\u1ef9 s\u01b0 l\u1ef1a ch\u1ecdn m\u1ee9c \u0111\u1ed9 ch\u00ednh x\u00e1c kinh t\u1ebf, &quot;\u0111\u1ee7 t\u1ed1t&quot; cho \u1ee9ng d\u1ee5ng m\u00e0 kh\u00f4ng l\u00e3ng ph\u00ed ngu\u1ed3n l\u1ef1c v\u00e0o \u0111\u1ed9 ch\u00ednh x\u00e1c kh\u00f4ng c\u1ea7n thi\u1ebft.<\/p>\n<h3>\u0110\u1ea3m b\u1ea3o \u0111\u1ed9 tin c\u1eady v\u00e0 tu\u1ed5i th\u1ecd \u1ed5 tr\u1ee5c<\/h3>\n<p>Vi\u1ec7c l\u1ef1a ch\u1ecdn c\u1ea5p \u0111\u1ed9 G ph\u00f9 h\u1ee3p \u0111\u1ea3m b\u1ea3o m\u00e1y m\u00f3c ho\u1ea1t \u0111\u1ed9ng v\u1edbi m\u1ee9c \u0111\u1ed9 rung \u0111\u1ed9ng ch\u1ea5p nh\u1eadn \u0111\u01b0\u1ee3c, tr\u1ef1c ti\u1ebfp gi\u1ea3m t\u1ea3i tr\u1ecdng \u0111\u1ed9ng l\u00ean \u1ed5 bi, ph\u1edbt, kh\u1edbp n\u1ed1i v\u00e0 c\u00e1c c\u1ea5u tr\u00fac \u0111\u1ee1. M\u1ed1i quan h\u1ec7 gi\u1eefa l\u1ef1c m\u1ea5t c\u00e2n b\u1eb1ng v\u00e0 tu\u1ed5i th\u1ecd \u1ed5 bi r\u1ea5t r\u00f5 r\u1ec7t: gi\u1ea3m \u0111\u1ed9 m\u1ea5t c\u00e2n b\u1eb1ng b\u1eb1ng 50% c\u00f3 th\u1ec3 t\u0103ng tu\u1ed5i th\u1ecd \u1ed5 bi L10 l\u00ean g\u1ea5p 8 l\u1ea7n (do m\u1ed1i quan h\u1ec7 b\u1eadc ba trong t\u00ednh to\u00e1n tu\u1ed5i th\u1ecd \u1ed5 bi). Ch\u1ea5t l\u01b0\u1ee3ng c\u00e2n b\u1eb1ng ph\u00f9 h\u1ee3p l\u00e0 m\u1ed9t trong nh\u1eefng c\u1ea3i ti\u1ebfn \u0111\u1ed9 tin c\u1eady hi\u1ec7u qu\u1ea3 v\u1ec1 chi ph\u00ed nh\u1ea5t hi\u1ec7n c\u00f3.<\/p>\n<h3>Tu\u00e2n th\u1ee7 quy \u0111\u1ecbnh v\u00e0 h\u1ee3p \u0111\u1ed3ng<\/h3>\n<p>Nhi\u1ec1u ti\u00eau chu\u1ea9n ng\u00e0nh v\u00e0 th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt thi\u1ebft b\u1ecb tham chi\u1ebfu \u0111\u1ebfn c\u1ea5p \u0111\u1ed9 ISO G nh\u01b0 m\u1ed9t y\u00eau c\u1ea7u b\u1eaft bu\u1ed9c. C\u00e1c ti\u00eau chu\u1ea9n API cho thi\u1ebft b\u1ecb ng\u00e0nh d\u1ea7u kh\u00ed, ti\u00eau chu\u1ea9n IEC cho \u0111\u1ed9ng c\u01a1 \u0111i\u1ec7n v\u00e0 c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt qu\u00e2n s\u1ef1 cho thi\u1ebft b\u1ecb qu\u1ed1c ph\u00f2ng \u0111\u1ec1u tham chi\u1ebfu ho\u1eb7c \u00e1p d\u1ee5ng h\u1ec7 th\u1ed1ng c\u1ea5p \u0111\u1ed9 ISO G. Vi\u1ec7c tu\u00e2n th\u1ee7 c\u00e1c y\u00eau c\u1ea7u n\u00e0y th\u01b0\u1eddng mang t\u00ednh r\u00e0ng bu\u1ed9c theo h\u1ee3p \u0111\u1ed3ng v\u00e0 c\u00f3 th\u1ec3 ph\u1ea3i ch\u1ecbu s\u1ef1 ki\u1ec3m to\u00e1n ho\u1eb7c x\u00e1c minh.<\/p>\n<h3>Ti\u00eau chu\u1ea9n b\u1ea3o tr\u00ec d\u1ef1 \u0111o\u00e1n<\/h3>\n<p>Khi m\u1ed9t rotor \u0111\u01b0\u1ee3c c\u00e2n b\u1eb1ng \u1edf m\u1ed9t G-grade \u0111\u00e3 bi\u1ebft v\u00e0 m\u1ee9c rung \u0111\u1ed9ng ban \u0111\u1ea7u \u0111\u01b0\u1ee3c ghi l\u1ea1i, c\u00e1c ph\u00e9p \u0111o rung \u0111\u1ed9ng ti\u1ebfp theo c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c so s\u00e1nh v\u1edbi <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/baseline\/\">\u0111\u01b0\u1eddng c\u01a1 s\u1edf<\/a>. B\u1ea5t k\u1ef3 s\u1ef1 gia t\u0103ng n\u00e0o trong <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/running-speed\/\">1\u00d7 v\u00f2ng\/ph\u00fat<\/a> rung \u0111\u1ed9ng ngay l\u1eadp t\u1ee9c ch\u1ec9 ra \u0111\u1ed9 m\u1ea5t c\u00e2n b\u1eb1ng \u0111ang ph\u00e1t tri\u1ec3n (t\u1eeb x\u00f3i m\u00f2n, t\u00edch t\u1ee5, m\u1ea5t m\u00e1t b\u1ed9 ph\u1eadn ho\u1eb7c u\u1ed1n cong nhi\u1ec7t), cho ph\u00e9p ch\u1ee7 \u0111\u1ed9ng <a href=\"https:\/\/vibromera.eu\/vi\/glossary\/predictive-maintenance\/\">b\u1ea3o tr\u00ec<\/a> tr\u01b0\u1edbc khi h\u1ecfng h\u00f3c x\u1ea3y ra.<\/p>\n<div class=\"info-box success\">\n<div class=\"box-title\">Thi\u1ebft b\u1ecb c\u00e2n b\u1eb1ng Vibromera v\u00e0 c\u00e1c lo\u1ea1i G-Grades<\/div>\n<p>The <a href=\"https:\/\/vibromera.eu\/vi\/san-pham\/balanset-1\/\">Balanset-1A<\/a> and <a href=\"https:\/\/vibromera.eu\/vi\/san-pham\/balanset-4\/\">Balanset-4<\/a> C\u00e1c thi\u1ebft b\u1ecb c\u00e2n b\u1eb1ng di \u0111\u1ed9ng h\u1ed7 tr\u1ee3 tr\u1ef1c ti\u1ebfp th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt c\u1ea5p G trong ph\u1ea7n m\u1ec1m c\u1ee7a ch\u00fang. Ng\u01b0\u1eddi v\u1eadn h\u00e0nh nh\u1eadp c\u1ea5p G mong mu\u1ed1n, kh\u1ed1i l\u01b0\u1ee3ng r\u00f4to v\u00e0 t\u1ed1c \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng, v\u00e0 thi\u1ebft b\u1ecb s\u1ebd t\u1ef1 \u0111\u1ed9ng t\u00ednh to\u00e1n dung sai cho ph\u00e9p v\u00e0 hi\u1ec3n th\u1ecb tr\u1ea1ng th\u00e1i \u0111\u1ea1t\/kh\u00f4ng \u0111\u1ea1t trong qu\u00e1 tr\u00ecnh c\u00e2n b\u1eb1ng. \u0110i\u1ec1u n\u00e0y lo\u1ea1i b\u1ecf c\u00e1c l\u1ed7i t\u00ednh to\u00e1n th\u1ee7 c\u00f4ng v\u00e0 \u0111\u1ea3m b\u1ea3o tu\u00e2n th\u1ee7 nh\u1ea5t qu\u00e1n c\u00e1c ti\u00eau chu\u1ea9n ISO.<\/p>\n<\/p><\/div>\n<hr style=\"margin: 48px 0 24px; border: none; border-top: 1px solid var(--border-light);\">\n<p><a href=\"https:\/\/vibromera.eu\/vi\/glossary\/\">\u2190 Tr\u1edf l\u1ea1i M\u1ee5c l\u1ee5c Thu\u1eadt ng\u1eef<\/a><\/p>\n<\/article>\n<p>      <!-- TOC SIDEBAR --><\/p>\n<aside class=\"toc-sidebar\">\n<div class=\"toc-box\">\n<h3>Tr\u00ean Trang n\u00e0y<\/h3>\n<p>          <a href=\"#calculator\">M\u00e1y t\u00ednh m\u1ea5t c\u00e2n b\u1eb1ng<\/a><br \/>\n          <a href=\"#grade-overview\">T\u1ed5ng quan v\u1ec1 h\u1ea1ng G<\/a><br \/>\n          <a href=\"#full-table\">B\u1ea3ng ISO \u0111\u1ea7y \u0111\u1ee7<\/a><br \/>\n          <a href=\"#definition\">S\u1ef1 \u0111\u1ecbnh ngh\u0129a<\/a><br \/>\n          <a class=\"sub\" href=\"#definition\">B\u1ed1i c\u1ea3nh l\u1ecbch s\u1eed<\/a><br \/>\n          <a href=\"#how-it-works\">C\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng c\u1ee7a \u0111i\u1ec3m G<\/a><br \/>\n          <a class=\"sub\" href=\"#how-it-works\">C\u00f4ng th\u1ee9c c\u1ed1t l\u00f5i<\/a><br \/>\n          <a class=\"sub\" href=\"#how-it-works\">Gi\u1ea3i th\u00edch c\u00e1c bi\u1ebfn s\u1ed1<\/a><br \/>\n          <a class=\"sub\" href=\"#how-it-works\">Gi\u1ea3i th\u00edch h\u00ecnh h\u1ecdc<\/a><br \/>\n          <a href=\"#selecting\">Ch\u1ecdn c\u1ea5p h\u1ecdc<\/a><br \/>\n          <a class=\"sub\" href=\"#selecting\">C\u00e1c y\u1ebfu t\u1ed1 quy\u1ebft \u0111\u1ecbnh<\/a><br \/>\n          <a class=\"sub\" href=\"#selecting\">C\u00e1c khuy\u1ebfn ngh\u1ecb c\u1ee7a ng\u00e0nh<\/a><br \/>\n          <a href=\"#practical\">V\u00ed d\u1ee5 th\u1ef1c t\u1ebf<\/a><br \/>\n          <a class=\"sub\" href=\"#practical\">C\u00e1nh qu\u1ea1t b\u01a1m<\/a><br \/>\n          <a class=\"sub\" href=\"#practical\">C\u00e1nh qu\u1ea1t<\/a><br \/>\n          <a class=\"sub\" href=\"#practical\">B\u1ed9 t\u0103ng \u00e1p<\/a><br \/>\n          <a href=\"#two-plane\">C\u00e2n b\u1eb1ng hai m\u1eb7t ph\u1eb3ng<\/a><br \/>\n          <a href=\"#common-mistakes\">Nh\u1eefng sai l\u1ea7m th\u01b0\u1eddng g\u1eb7p<\/a><br \/>\n          <a href=\"#importance\">T\u1ea1i sao \u0111i\u1ec1u \u0111\u00f3 l\u1ea1i quan tr\u1ecdng<\/a>\n        <\/div>\n<div class=\"toc-box\" style=\"margin-top: 24px; background: var(--navy); border-color: var(--navy);\">\n<h3 style=\"color: var(--white);\">Thi\u1ebft b\u1ecb Vibromera<\/h3>\n<p style=\"color: rgba(255,255,255,0.6); font-size: 13px; margin-bottom: 12px;\">C\u00e1c thi\u1ebft b\u1ecb c\u00e2n b\u1eb1ng c\u1ea7m tay t\u00edch h\u1ee3p t\u00ednh to\u00e1n dung sai c\u1ea5p ISO G.<\/p>\n<p>          <a href=\"https:\/\/vibromera.eu\/vi\/san-pham\/balanset-1\/\" style=\"display: block; padding: 8px 14px; background: var(--blue); color: white; border-radius: 6px; text-align: center; font-weight: 600; font-size: 14px; text-decoration: none; margin-bottom: 8px; border-left: none;\">Balanset-1A \u2192<\/a><br \/>\n          <a href=\"https:\/\/vibromera.eu\/vi\/san-pham\/balanset-4\/\" style=\"display: block; padding: 8px 14px; background: rgba(255,255,255,0.1); color: white; border-radius: 6px; text-align: center; font-weight: 600; font-size: 14px; text-decoration: none; border: 1px solid rgba(255,255,255,0.2); border-left: none;\">Balanset-4 \u2192<\/a>\n        <\/div>\n<\/aside><\/div>\n<\/p><\/div>\n<p><\/main><\/p>\n<p><!-- SHOP CTA --><\/p>\n<section class=\"shop-cta\">\n<div class=\"container\">\n<h2>Thi\u1ebft b\u1ecb c\u00e2n b\u1eb1ng di \u0111\u1ed9ng chuy\u00ean nghi\u1ec7p<\/h2>\n<p>C\u00e2n b\u1eb1ng r\u00f4to theo ti\u00eau chu\u1ea9n ISO G ngay t\u1ea1i hi\u1ec7n tr\u01b0\u1eddng v\u1edbi thi\u1ebft b\u1ecb Balanset c\u1ee7a Vibromera \u2014 t\u00edch h\u1ee3p t\u00ednh to\u00e1n dung sai, kh\u1ea3 n\u0103ng c\u00e2n b\u1eb1ng hai m\u1eb7t ph\u1eb3ng, cho k\u1ebft qu\u1ea3 chuy\u00ean nghi\u1ec7p v\u1edbi gi\u00e1 c\u1ea3 ph\u1ea3i ch\u0103ng.<\/p>\n<p>    <a href=\"https:\/\/vibromera.eu\/vi\/shop\/\" class=\"cta-btn\">Xem thi\u1ebft b\u1ecb \u2192<\/a>\n  <\/div>\n<\/section>\n<p><!-- FOOTER --><\/p>\n<footer class=\"page-footer\">\n<div class=\"container\">\n<p><a href=\"https:\/\/vibromera.eu\/vi\/glossary\/\">\u2190 Tr\u1edf l\u1ea1i m\u1ee5c Thu\u1eadt ng\u1eef<\/a> &nbsp;|&nbsp; <a href=\"https:\/\/vibromera.eu\/vi\/\">vibromera.eu<\/a><\/p>\n<\/p><\/div>\n<\/footer>\n<hr>\n<p><a href=\"https:\/\/vibromera.eu\/vi\/glossary\/\">\u2190 Quay l\u1ea1i M\u1ee5c l\u1ee5c ch\u00ednh<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>T\u00ecm hi\u1ec3u v\u1ec1 C\u1ea5p \u0111\u1ed9 ch\u1ea5t l\u01b0\u1ee3ng c\u00e2n b\u1eb1ng (G-Grades) theo ti\u00eau chu\u1ea9n ISO, m\u1ed9t h\u1ec7 th\u1ed1ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 ch\u1ec9 \u0111\u1ecbnh m\u1ee9c m\u1ea5t c\u00e2n b\u1eb1ng d\u01b0 cho ph\u00e9p \u0111\u1ed1i v\u1edbi c\u00e1c lo\u1ea1i r\u00f4to kh\u00e1c nhau.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"ai_generated_summary":"","footnotes":""},"categories":[109,111],"tags":[],"class_list":["post-130","glossary","type-glossary","status-publish","hentry","category-glossary","category-rotor-balancing"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/vi\/wp-json\/wp\/v2\/glossary\/130","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vibromera.eu\/vi\/wp-json\/wp\/v2\/glossary"}],"about":[{"href":"https:\/\/vibromera.eu\/vi\/wp-json\/wp\/v2\/types\/glossary"}],"version-history":[{"count":5,"href":"https:\/\/vibromera.eu\/vi\/wp-json\/wp\/v2\/glossary\/130\/revisions"}],"predecessor-version":[{"id":101732,"href":"https:\/\/vibromera.eu\/vi\/wp-json\/wp\/v2\/glossary\/130\/revisions\/101732"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/vi\/wp-json\/wp\/v2\/media?parent=130"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/vi\/wp-json\/wp\/v2\/categories?post=130"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/vi\/wp-json\/wp\/v2\/tags?post=130"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}