{"id":235,"date":"2025-10-31T00:25:51","date_gmt":"2025-10-31T00:25:51","guid":{"rendered":"https:\/\/vibromera.eu\/glossary\/shaft-whip\/"},"modified":"2026-07-03T10:10:47","modified_gmt":"2026-07-03T10:10:47","slug":"shaft-whip","status":"publish","type":"glossary","link":"https:\/\/vibromera.eu\/hr\/glossary\/shaft-whip\/","title":{"rendered":"\u0160to je vibracije vratila? Obja\u0161njenje te\u0161ke nestabilnosti rotora"},"content":{"rendered":"<h1>Razumijevanje vibracija osovine u rotiraju\u0107im strojevima<\/h1>\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\/hr\/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\/hr\/product\/balanset-1\/\" title=\"Prijenosni balanser &amp; analizator vibracija 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=\"Balanset-1A kompletan set prijenosnog balansera i analizatora vibracija\" 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\/hr\/product-category\/devices\/\" rel=\"tag\">ure\u0111aji<\/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\/hr\/product\/balanset-1\/\" title=\"Prijenosni balanser &amp; analizator vibracija Balanset-1A\">Portable balancer &amp; Vibration analyzer 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> + PDV (ako je primjenjivo)<\/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=\"\/hr\/wp-json\/wp\/v2\/glossary\/235?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=\"Dodaj u ko\u0161aricu\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Dodaj u ko\u0161aricu\" 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=\"\/hr\/wp-json\/wp\/v2\/glossary\/235?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=\"Dodaj u ko\u0161aricu: \u201cPortable balancer &amp; Vibration analyzer Balanset-1A\u201d\" rel=\"nofollow\" data-success_message=\"&quot;Portable balancer &amp; Vibration analyzer Balanset-1A&quot; je dodan u va\u0161u ko\u0161aricu\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Dodaj u ko\u0161aricu<\/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\/hr\/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\/hr\/product\/vibration-sensor\/\" title=\"senzor vibracija\">\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=\"Detalj senzora vibracija 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\/hr\/product-category\/parts\/\" rel=\"tag\">dijelovi<\/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\/hr\/product\/vibration-sensor\/\" title=\"senzor vibracija\">senzor vibracija<\/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> + PDV (ako je primjenjivo)<\/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=\"\/hr\/wp-json\/wp\/v2\/glossary\/235?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=\"Dodaj u ko\u0161aricu\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Dodaj u ko\u0161aricu\" 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=\"\/hr\/wp-json\/wp\/v2\/glossary\/235?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=\"Dodaj u ko\u0161aricu: \u201cVibration sensor\u201d\" rel=\"nofollow\" data-success_message=\"&quot;Vibration sensor&quot; je dodan u va\u0161u ko\u0161aricu\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Dodaj u ko\u0161aricu<\/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\/hr\/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\/hr\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Opti\u010dki senzor (laserski tahometar)\">\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=\"Opti\u010dki senzor (laserski tahometar)\" 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\/hr\/product-category\/parts\/\" rel=\"tag\">dijelovi<\/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\/hr\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Opti\u010dki senzor (laserski tahometar)\">Opti\u010dki senzor (laserski tahometar)<\/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> + PDV (ako je primjenjivo)<\/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=\"\/hr\/wp-json\/wp\/v2\/glossary\/235?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=\"Dodaj u ko\u0161aricu\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Dodaj u ko\u0161aricu\" 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=\"\/hr\/wp-json\/wp\/v2\/glossary\/235?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=\"Dodaj u ko\u0161aricu: \u201cOptical Sensor (Laser Tachometer)\u201d\" rel=\"nofollow\" data-success_message=\"&quot;Optical Sensor (Laser Tachometer)&quot; je dodan u va\u0161u ko\u0161aricu\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Dodaj u ko\u0161aricu<\/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\/hr\/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\/hr\/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=\"Vibromera komplet za balansiranje rotora: torba za no\u0161enje, vi\u0161ekanalni pretvara\u010d signala, ru\u010dni analizator, magnetska baza, senzori vibracija i spiralni kabeli.\" 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\/hr\/product-category\/devices\/\" rel=\"tag\">ure\u0111aji<\/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\/hr\/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> + PDV (ako je primjenjivo)<\/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=\"\/hr\/wp-json\/wp\/v2\/glossary\/235?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=\"Dodaj u ko\u0161aricu\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Dodaj u ko\u0161aricu\" 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=\"\/hr\/wp-json\/wp\/v2\/glossary\/235?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=\"Dodaj u ko\u0161aricu: \u201cBalanset-4\u201d\" rel=\"nofollow\" data-success_message=\"&quot;Balanset-4&quot; je dodan u va\u0161u ko\u0161aricu\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Dodaj u ko\u0161aricu<\/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\/hr\/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\/hr\/product\/magnet-stand\/\" title=\"Magnetski stalak Insize nosivosti 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=\"Magnetska baza.\" 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\/hr\/product-category\/parts\/\" rel=\"tag\">dijelovi<\/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\/hr\/product\/magnet-stand\/\" title=\"Magnetski stalak Insize nosivosti 60 kgf\">Magnetski stalak Insize nosivosti 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> + PDV (ako je primjenjivo)<\/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=\"\/hr\/wp-json\/wp\/v2\/glossary\/235?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=\"Dodaj u ko\u0161aricu\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Dodaj u ko\u0161aricu\" 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=\"\/hr\/wp-json\/wp\/v2\/glossary\/235?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=\"Dodaj u ko\u0161aricu: \u201cMagnetic Stand Insize-60-kgf\u201d\" rel=\"nofollow\" data-success_message=\"&quot;Magnetic Stand Insize-60-kgf&quot; je dodan u va\u0161u ko\u0161aricu\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Dodaj u ko\u0161aricu<\/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\/hr\/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\/hr\/product\/reflective-tape\/\" title=\"Reflektiraju\u0107a traka\">\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=\"Reflektiraju\u0107a traka\" 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\/hr\/product-category\/parts\/\" rel=\"tag\">dijelovi<\/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\/hr\/product\/reflective-tape\/\" title=\"Reflektiraju\u0107a traka\">Reflektiraju\u0107a traka<\/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> + PDV (ako je primjenjivo)<\/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=\"\/hr\/wp-json\/wp\/v2\/glossary\/235?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=\"Dodaj u ko\u0161aricu\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Dodaj u ko\u0161aricu\" 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=\"\/hr\/wp-json\/wp\/v2\/glossary\/235?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=\"Dodaj u ko\u0161aricu: \u201cReflective tape\u201d\" rel=\"nofollow\" data-success_message=\"&quot;Reflective tape&quot; je dodan u va\u0161u ko\u0161aricu\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Dodaj u ko\u0161aricu<\/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\/hr\/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\/hr\/product\/dynamic-balancer-balanset-1a\/\" title=\"Dinami\u010dki balanser \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=\"Sadr\u017eaj kompleta Balanset-1A s jedinicom za su\u010delje, senzorima, tahometrom i dodacima\" 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\/hr\/product-category\/devices\/\" rel=\"tag\">ure\u0111aji<\/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\/hr\/product\/dynamic-balancer-balanset-1a\/\" title=\"Dinami\u010dki balanser \u201cBalanset-1A\u201d OEM\">Dinami\u010dki balanser \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> + PDV (ako je primjenjivo)<\/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=\"\/hr\/wp-json\/wp\/v2\/glossary\/235?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=\"Dodaj u ko\u0161aricu\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Dodaj u ko\u0161aricu\" 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=\"\/hr\/wp-json\/wp\/v2\/glossary\/235?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=\"Dodaj u ko\u0161aricu: \u201cDynamic balancer \u201cBalanset-1A\u201d OEM\u201d\" rel=\"nofollow\" data-success_message=\"&quot;Dynamic balancer \u201cBalanset-1A\u201d OEM&quot; je dodan u va\u0161u ko\u0161aricu\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Dodaj u ko\u0161aricu<\/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><strong>Bi\u010d osovine<\/strong> \u2014 poznat kao <em>uljni bi\u010d<\/em> kada nastaje u hidrodinami\u010dkim le\u017eajima \u2014 je ozbiljan oblik <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/rotor-instability\/\">nestabilnost rotora<\/a> karakteriziran nasilnim <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/self-excited-vibration\/\">samopobudne vibracije<\/a>. Pojavljuje se kada rotor koji se okre\u0107e u le\u017eajima sa fluidnom vezom prekora\u010di kriti\u010dnu brzinu vrtnje, obi\u010dno oko dvostruke vrijednosti prve <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/critical-speed\/\">kriti\u010dna brzina<\/a>. Kada se \u0161ibanje zadr\u017ei, frekvencija vibracije &#8220;blokira se&#8221; na prvu <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/natural-frequency\/\">vlastita frekvencija<\/a> rotora i zadr\u017eava se tamo bez obzira na daljnje pove\u0107anje brzine, s amplitudom ograni\u010denom samo zazorem le\u017eaja \u2014 ili katastrofalnim kvarom. To je jedan od najopasnijih stanja u brzohodno rotiraju\u0107im strojevima jer se pojavljuje naglo, dosti\u017ee razina uni\u0161tenja u nekoliko sekundi, i ne mo\u017ee se rije\u0161iti <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/balancing\/\">balansiranje<\/a> ili bilo kojom drugom konvencionalnom korekcijom. Zahtijeva trenutno isklju\u010divanje nakon kojeg slijede izmjene sustava le\u017eajeva kako bi se sprije\u010dila ponovna pojava.<\/p>\n<h2>1. Progresija: Od uljnog vrtloga do \u0161ibanja vratila<\/h2>\n<p>\u0160ibanje rijetko stigne bez upozorenja \u2014 to je krajnja to\u010dka \u010detvertstupnjskog razvoja koji pa\u017eljiv analiti\u010dar mo\u017ee zaustaviti mnogo prije destruktivne faze.<\/p>\n<h3>Faza 1 \u2014 Stabilan rad<\/h3>\n<ul>\n<li>Rotor se okre\u0107e ispod praga nestabilnosti.<\/li>\n<li>Samo normalna <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/forced-vibration\/\">prisilna vibracija<\/a> iz <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/unbalance\/\">neravnote\u017ea<\/a> je prisutna.<\/li>\n<li>Filmski sloj ulja u le\u017eaju pru\u017ea stabilan, dobro prigu\u0161en oslonac.<\/li>\n<\/ul>\n<h3>Faza 2 \u2014 Po\u010detak uljnog vrtloga<\/h3>\n<p>Kako brzina raste iznad otprilike 2\u00d7 prve kriti\u010dne brzine, <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/oil-whirl\/\">vrtlog ulja<\/a> po\u010dinje:<\/p>\n<ul>\n<li>A <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/sub-synchronous\/\">subsinkroni<\/a> vibracija se pojavljuje pri pribli\u017eno 0,43\u20130,48\u00d7 brzine vratila.<\/li>\n<li>Amplituda je u po\u010detku umjerena i ovisna o brzini<\/li>\n<li>Frekvencija vrtloga raste proporcionalno s brzinom vratila.<\/li>\n<li>Mo\u017ee biti isprekidana ili neprekidna.<\/li>\n<li>Mo\u017ee postojati istodobno sa normalnom 1\u00d7 vibracijskom komponentom od neuravnote\u017eenosti.<\/li>\n<\/ul>\n<h3>Faza 3 \u2014 Prelazna faza \u0161ibanja<\/h3>\n<p>Kada rastu\u0107i uljni vrtlog dose\u017ee dovoljno visoku frekvenciju da se podudari s prvom prirodnom frekvencijom, pona\u0161anje se naglo mijenja:<\/p>\n<ul>\n<li><strong>Blokiranje frekvencije:<\/strong> frekvencija vibracija prestaje pratiti brzinu vrtnje i fiksira se na prirodnu frekvenciju.<\/li>\n<li><strong>Rezonantna amplifikacija:<\/strong> amplituda se dramati\u010dno pove\u0107ava jer je sustav sada u <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/resonance\/\">rezonancija<\/a>.<\/li>\n<li><strong>Iznenadni po\u010detak:<\/strong> prijelaz od precesije na bi\u010dni udarac mo\u017ee biti prakti\u010dki trenuta\u010dan.<\/li>\n<li><strong>Neovisnost o brzini:<\/strong> daljnje pove\u0107anje brzine vi\u0161e ne mijenja frekvenciju \u2014 samo amplitudu.<\/li>\n<\/ul>\n<h3>Faza 4 \u2014 Bi\u010dni udarac vratila (kriti\u010dno stanje)<\/h3>\n<ul>\n<li>Vibracija se nalazi na konstantnoj frekvenciji \u2014 prvoj prirodnoj frekvenciji, tipi\u010dno 40\u201360 Hz.<\/li>\n<li>Amplituda dosti\u017ee 5\u201320 puta ve\u0107u od normalne vibracijske amplitudine neuravnote\u017eenosti.<\/li>\n<li>Vratilo mo\u017ee udariti u granice zazora izme\u0111u le\u017eaja.<\/li>\n<li>Le\u017eajevi i ulje se brzo zagrijavaju.<\/li>\n<li>Katastrofalan kvar mo\u017ee uslijediti u nekoliko minuta ako se stroj ne zaustavi.<\/li>\n<\/ul>\n<h2>2. Fizi\u010dki mehanizam<\/h2>\n<p>Bi\u010dni udarac je vo\u0111en fluidnom dinamikom filma mazivog ulja u le\u017eaju, \u0161to je razlog za\u0161to se ne mo\u017ee uravnote\u017eiti \u2014 destabiliziraju\u0107i energija dolazi iz maziva, ne od te\u0161ke to\u010dke. Slijed se odvija kako slijedi:<\/p>\n<ol>\n<li><strong>Formiranje klinastog sloja ulja:<\/strong> rotiraju\u0107e vratilo vu\u010de mazivo oko le\u017eaja, grade\u0107i tla\u010dni klinasti sloj.<\/li>\n<li><strong>Tangencijalna sila:<\/strong> taj klinasti sloj gura na \u010dahuru u smjeru okomitom na radijalnu liniju pomaka \u2014 unakrsno povezana, tangencijalna sila.<\/li>\n<li><strong>Orbitalno gibanje:<\/strong> tangencijalna sila pokre\u0107e sredi\u0161te vratila prema <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/whirl\/\">vrtlo\u017eiti se<\/a> u <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/orbit\/\">orbita<\/a> otprilike na polovici brzine vratila.<\/li>\n<li><strong>Ekstrakcija energije:<\/strong> orbitalno gibanje crpi energiju iz rotacije vratila kako bi se odr\u017ealo \u2014 karakteristika samouzbu\u0161ene vibracije.<\/li>\n<li><strong>Zaklju\u010davanje rezonancije:<\/strong> kada se frekvencija orbite podudara s prirodnom frekvencijom, rezonancija poja\u010dava gibanje.<\/li>\n<li><strong>Grani\u010dni ciklus:<\/strong> amplituda raste dok je ne ograni\u010di zazor le\u017eaja ili kvara.<\/li>\n<\/ol>\n<p>Budu\u0107i da uzbudna sila ovisi o pona\u0161anju maziva, sve \u0161to pove\u0107ava krutost filmskog sloja ili sustava <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/damping\/\">prigu\u0161ivanje<\/a> pove\u0107ava brzinu pri kojoj po\u010dinje nestabilnost.<\/p>\n<h2>3. Dijagnosti\u010dka identifikacija<\/h2>\n<p>Whip vratila ostavlja nepogre\u0161iv otisak u podacima vibracija, \u0161to omogu\u0107ava rano prepoznavanje ako se pregledavaju ispravne grafi\u010dke prikaze.<\/p>\n<h3>Vibracijski potpis<\/h3>\n<ul>\n<li><strong><a href=\"https:\/\/vibromera.eu\/hr\/glossary\/spectrum\/\">Spektar<\/a>:<\/strong> veliki vrh na podsinhronoj (prvoj prirodnoj) frekvenciji koji ostaje nepromijenjen bez obzira na promjene brzine.<\/li>\n<li><strong><a href=\"https:\/\/vibromera.eu\/hr\/glossary\/waterfall-plot\/\">Vodopadni prikaz<\/a>:<\/strong> podsinkrona komponenta pojavljuje se kao okomita linija (konstantna frekvencija) umjesto dijagonalne linije komponente proporcionalne brzini.<\/li>\n<li><strong><a href=\"https:\/\/vibromera.eu\/hr\/glossary\/order-analysis\/\">Analiza redova<\/a>:<\/strong> razlomljeni redoslijed koji <em>smanjuje<\/em> kako brzina raste \u2014 primjerice pomi\u010du\u0107i se s 0.5\u00d7 na 0.4\u00d7 pa na 0.35\u00d7 \u2014 jer je frekvencija fiksna dok brzina raste.<\/li>\n<li><strong>Orbita:<\/strong> velika kru\u017ena ili elipti\u010dna orbita na prirodnoj frekvenciji.<\/li>\n<\/ul>\n<p>A <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/bode-plot\/\">Bodeov dijagram<\/a> snimljeno <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/coastdown\/\">obala<\/a> dodatno razlikuje pravu rezonanciju od whipa, budu\u0107i da se zaklju\u010dana podsinkrona linija pona\u0161a sasvim druga\u010dije od sinkronog vrha kriti\u010dne brzine.<\/p>\n<h3>Brzina po\u010detka<\/h3>\n<ul>\n<li><strong>Tipi\u010dni prag:<\/strong> 2,0\u20132,5\u00d7 prva kriti\u010dna brzina.<\/li>\n<li><strong>Ovisno o le\u017eaju:<\/strong> to\u010dan prag varira s obzirom na konstrukciju le\u017eaja, <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/preload\/\">predoptere\u0107enje<\/a>, i viskoznost ulja.<\/li>\n<li><strong>Iznenadni po\u010detak:<\/strong> malo pove\u0107anje brzine mo\u017ee prebaciti rotor iz stabilnog u potpuno nestabilan.<\/li>\n<\/ul>\n<h2>4. Strategije prevencije<\/h2>\n<p>Budu\u0107i da whip nije mogu\u0107e uravnote\u017eiti, prevencija se fokusira na <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/journal-bearing\/\">le\u017eaj kliza\u010da<\/a> i kako se stroj koristi.<\/p>\n<h3>Modifikacije dizajna le\u017eaja<\/h3>\n<p><strong>1. Le\u017eajevi na pomi\u010dnim plo\u010dicama<\/strong> \u2014 najefikasnija ispravka. Plo\u010dice se okre\u0107u nezavisno, eliminiraju\u0107i destabiliziraju\u0107u silu unakrsne veze; inherentno su stabilne u \u0161irokom rasponu brzina i industrijski su standard za turboma\u0161ineriju visokih brzina.<\/p>\n<p><strong>2. Le\u017eajevi s tla\u010dnom branom<\/strong> \u2014 modificirani cilindri\u010dni le\u017eaj s utorom ili branom koja pove\u0107ava u\u010dinkovito prigu\u0161enje i krutost; jeftiniji od le\u017eajeva na pomi\u010dnim plo\u010dicama, ali manje u\u010dinkovit.<\/p>\n<p><strong>3. Predoptere\u0107enje le\u017eaja<\/strong> \u2014 primjena radijalnog predoptere\u0107enja (\u010desto kroz oblik sa pomakanom osovinom) pove\u0107ava krutost i podi\u017ee prag nestabilnosti.<\/p>\n<p><strong>4. <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/squeeze-film-damper\/\">Prigu\u0161iva\u010di sa filmom ulja<\/a><\/strong> \u2014 vanjski element prigu\u0161enja koji okru\u017euje le\u017eaj i dodaje prigu\u0161enje bez redizajniranja samog le\u017eaja, dobro je prilago\u0111en nadogradnjama.<\/p>\n<h3>Operativne mjere<\/h3>\n<ul>\n<li><strong>Ograni\u010denje brzine:<\/strong> odr\u017eavajte maksimalnu brzinu ispod praga \u2014 tipi\u010dno ispod 1,8\u00d7 prve kriti\u010dne brzine.<\/li>\n<li><strong>Upravljanje optere\u0107enjem:<\/strong> radite pri ve\u0107im optere\u0107enjima le\u017eaja gdje je to mogu\u0107e, jer optere\u0107enje pove\u0107ava prigu\u0161enje.<\/li>\n<li><strong>Kontrola temperature ulja:<\/strong> hladnije ulje je viskoznije i stabilnije.<\/li>\n<li><strong>Pra\u0107enje:<\/strong> kontinuirano <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/vibration-monitoring\/\">pra\u0107enje vibracija<\/a> sa alarmima koji posebno prate podsinkroni opseg.<\/li>\n<\/ul>\n<h2>5. Posljedice i o\u0161te\u0107enja<\/h2>\n<h3>Trenutni u\u010dinci<\/h3>\n<ul>\n<li><strong>Nasilna vibracija:<\/strong> amplitude mogu dosegnuti nekoliko milimetara (stotine milimetara).<\/li>\n<li><strong>Buka:<\/strong> karakteristi\u010dan, bu\u010dan zvuk sasvim razli\u010dit od normalnog rada.<\/li>\n<li><strong>Brzo zagrijavanje le\u017eaja:<\/strong> temperature mogu porasti 20\u201350 \u00b0C u nekoliko minuta.<\/li>\n<li><strong>Degradacija ulja:<\/strong> visoka temperatura i intenzivno smicanje razgra\u0111uju lubrikant.<\/li>\n<\/ul>\n<h3>Potencijalni kvarovi<\/h3>\n<ul>\n<li><strong>Zahvat le\u017eaja:<\/strong> babitni sloj se topi i otire.<\/li>\n<li><strong>O\u0161te\u0107enje osovine:<\/strong> brazde, ozljede od prionjavanja ili trajno savijanje.<\/li>\n<li><strong><a href=\"https:\/\/vibromera.eu\/hr\/glossary\/seal-defects\/\">Otkazivanje brtve<\/a>:<\/strong> pretjerano gibanje osovine uni\u0161tava zaptivke.<\/li>\n<li><strong>Lomljenje osovine:<\/strong> visokocikli\u010dki <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/fatigue\/\">umor<\/a> od nasilnog osciliranja.<\/li>\n<li><strong><a href=\"https:\/\/vibromera.eu\/hr\/glossary\/coupling-defects\/\">O\u0161te\u0107enje spojke<\/a>:<\/strong> prenesene sile uni\u0161tavaju spojke.<\/li>\n<\/ul>\n<h2>6. Srodne pojave<\/h2>\n<h3>Uljni vrtlog<\/h3>\n<p><a href=\"https:\/\/vibromera.eu\/hr\/glossary\/oil-whirl\/\">Uljni vrtlog<\/a> je prete\u010da whipa: isti mehanizam, ali frekvencija se jo\u0161 nije \u0437\u0430\u043a\u0459\u0443\u0447\u0430\u043b\u0430 na prirodnu frekvenciju. Njegova amplituda je manja, njena frekvencija prati brzinu na ~0,43\u20130,48\u00d7, i u nekim primjenama tolerirana je.<\/p>\n<h3>Parni vrtlog<\/h3>\n<p><a href=\"https:\/\/vibromera.eu\/hr\/glossary\/steam-whirl\/\">Parni vrtlog<\/a> je sli\u010dna nestabilnost u parnim turbinama, potaknuta aerodinami\u010dkim silama u labirintnim zaptivkama umjesto uljnog filma le\u017eaja. Pokazuje istu podsinkronu vibraciju zakljo\u010danu na prirodnu frekvenciju.<\/p>\n<h3>Whip zbog suhog trenja<\/h3>\n<p>Ovaj se varijant javlja na lokacijama zaptivki ili od <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/rotor-rub\/\">kontakta rotora i statora<\/a>. Trenje omogu\u0107ava destabiliziraju\u0107i mehanizam; manje je \u010dest od uljnog whipa ali jednako opasan i zahtijeva druga\u010dije rje\u0161enje \u2014 eliminaciju kontakta ili pobolj\u0161anje zaptivke.<\/p>\n<h2>7. Studija slu\u010daja: Whip osovine kompresora<\/h2>\n<p><strong>Scenarij:<\/strong> brzohodnog centrifugalnog kompresora na obi\u010dnim cilindri\u010dnim le\u017eajima.<\/p>\n<ul>\n<li><strong>Normalan rad:<\/strong> 12 000 rpm s vibracijama od 2,5 mm\/s.<\/li>\n<li><strong>Pove\u0107anje brzine:<\/strong> operator je prisilio motor na 13.500 okretaja u minuti za ve\u0107u kapaciteta.<\/li>\n<li><strong>Po\u010detak:<\/strong> pri 13.200 okretaja u minuti pojavila se nagla, sna\u017ena vibracija.<\/li>\n<li><strong>Simptomi:<\/strong> 25 mm\/s pri stalnih 105 Hz; temperatura le\u017eaja porasla je sa 70 \u00b0C na 95 \u00b0C u tri minute.<\/li>\n<li><strong>Hitna mjera:<\/strong> brzo ga\u0161enje sprije\u010dilo je otkaz le\u017eaja.<\/li>\n<li><strong>Osnovni uzrok:<\/strong> prva kriti\u010dna brzina bila je 6,300 rpm (105 Hz); pri 13,200 rpm rotor je pre\u0161ao prag uljnog bi\u010danja od pribli\u017eno 2\u00d7 kriti\u010dne \u2248 12,600 rpm, a vibracija se zaklju\u010dala na prvu vlastitu frekvenciju od 105 Hz.<\/li>\n<li><strong>Rije\u0161enje:<\/strong> klizni le\u017eajevi su zamijenjeni sa le\u017eajima s naginju\u0107im plo\u010dama, omogu\u0107avaju\u0107i siguran rad do 15.000 okretaja u minuti.<\/li>\n<\/ul>\n<h2>8. Norme, praksa i terenski alati<\/h2>\n<ul>\n<li><strong><a href=\"https:\/\/vibromera.eu\/hr\/glossary\/api-684\/\">API 684<\/a>:<\/strong> zahtijeva analizu rotordinami\u010dke stabilnosti za turbostrojeve visokih brzina.<\/li>\n<li><strong>API 617:<\/strong> odre\u0111uje tipove le\u017eajeva i zahtjeve stabilnosti za centrifugalne kompresore.<\/li>\n<li><strong>ISO 10814:<\/strong> Pru\u017ea smjernice za odabir le\u017eaja za stabilnost<\/li>\n<li><strong>Industrijska praksa:<\/strong> le\u017eajevi s naginju\u0107im plo\u010dama su standard za postrojenja koja rade iznad 2\u00d7 prve kriti\u010dne brzine.<\/li>\n<\/ul>\n<p>U terenu, svakodnevna za\u0161tita je uhvatiti znak prije nego \u0161to rotor ikada do\u0111e do vrtlo\u017eenja. Prijenosni dvokanalski analizator kao \u0161to je <a href=\"https:\/\/vibromera.eu\/hr\/proizvod\/balanset-1\/\">Balanset-1A<\/a> omogu\u0107ava in\u017eenjeru da bilje\u017ei amplitudu, <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/phase\/\">faza<\/a> i spektar tijekom kontroliranog zaleta i nadzire sub-sinhroni pojas izravno \u2014 ako stabilni 1\u00d7 potpis odjednom dobije zaklju\u010danu, brzini neovisnu vrh blizu prve prirodne frekvencije, rotor je na rubu vrtlo\u017eenja i brzina mora biti smanjena. Isti instrument potvr\u0111uje nakon toga da je underlying nebalansirano\u0161\u0107u u dozvoljenim granicama, isklju\u010duju\u0107i je kao pridonose\u0107u pobudu. Vrtlo\u017eenje vratila ostaje katastrofalni vid otkaza koji je najbolje rije\u0161iti ispravnom izboru i dizajnom le\u017eajeva; prepoznavanje njezina karakteristi\u010dnog sub-sinkronog, frekvencijom zaklju\u010danog potpisa je ono \u0161to omogu\u0107ava brzu dijagnozu i odlu\u010dan odgovor u nu\u017edi koji \u0161titi skupu opremu visokih brzina.<\/p>\n<hr>\n<p><a href=\"https:\/\/vibromera.eu\/hr\/glossary\/\">\u2190 Natrag na glavni indeks<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Saznajte vi\u0161e o vibracijama vratila, ozbiljnoj samopobudnoj vibracijskoj nestabilnosti u le\u017eajevima s fluidnim filmom koja se javlja pri velikim brzinama, uzrokuju\u0107i nasilne oscilacije na prirodnoj frekvenciji.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"ai_generated_summary":"","footnotes":""},"categories":[109,111],"tags":[],"class_list":["post-235","glossary","type-glossary","status-publish","hentry","category-glossary","category-rotor-balancing"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/hr\/wp-json\/wp\/v2\/glossary\/235","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vibromera.eu\/hr\/wp-json\/wp\/v2\/glossary"}],"about":[{"href":"https:\/\/vibromera.eu\/hr\/wp-json\/wp\/v2\/types\/glossary"}],"version-history":[{"count":2,"href":"https:\/\/vibromera.eu\/hr\/wp-json\/wp\/v2\/glossary\/235\/revisions"}],"predecessor-version":[{"id":102183,"href":"https:\/\/vibromera.eu\/hr\/wp-json\/wp\/v2\/glossary\/235\/revisions\/102183"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/hr\/wp-json\/wp\/v2\/media?parent=235"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/hr\/wp-json\/wp\/v2\/categories?post=235"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/hr\/wp-json\/wp\/v2\/tags?post=235"}],"curies":[{"name":"radni list","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}