{"id":52,"date":"2025-10-31T00:25:51","date_gmt":"2025-10-31T00:25:51","guid":{"rendered":"https:\/\/vibromera.eu\/glossary\/bearing-span\/"},"modified":"2026-07-03T09:51:01","modified_gmt":"2026-07-03T09:51:01","slug":"bearing-span","status":"publish","type":"glossary","link":"https:\/\/vibromera.eu\/ro\/glossary\/bearing-span\/","title":{"rendered":"Ce este deschiderea lag\u0103rului \u00een dinamica rotorului?"},"content":{"rendered":"<h1>\u00cen\u021belegerea deschiderii rulmen\u021bilor \u00een dinamica rotorului<\/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\/ro\/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\/ro\/product\/balanset-1\/\" title=\"Echilibrator portabil \u0219i analizor de vibra\u021bii 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 kit complet \u2014 echilibrator portabil \u0219i analizor de vibra\u021bii\" 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\/ro\/product-category\/devices\/\" rel=\"tag\">Dispozitive<\/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\/ro\/product\/balanset-1\/\" title=\"Echilibrator portabil \u0219i analizor de vibra\u021bii Balanset-1A\">Echilibrator portabil \u0219i analizor de vibra\u021bii 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> + TVA (dac\u0103 este cazul)<\/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=\"\/ro\/wp-json\/wp\/v2\/glossary\/52?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=\"Adaug\u0103 \u00een co\u0219\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adaug\u0103 \u00een co\u0219\" 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=\"\/ro\/wp-json\/wp\/v2\/glossary\/52?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=\"Adaug\u0103 \u00een co\u0219: &amp;lbquo;Portable balancer &amp; Vibration analyzer Balanset-1A\u201d\" rel=\"nofollow\" data-success_message=\"\u201ePortable balancer &amp; Vibration analyzer Balanset-1A\u201d a fost ad\u0103ugat \u00een co\u0219\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adaug\u0103 \u00een co\u0219<\/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\/ro\/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\/ro\/product\/vibration-sensor\/\" title=\"Senzor de vibra\u021bii\">\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=\"Prim-plan senzor de vibra\u021bii 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\/ro\/product-category\/parts\/\" rel=\"tag\">Piese<\/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\/ro\/product\/vibration-sensor\/\" title=\"Senzor de vibra\u021bii\">Senzor de vibra\u021bii<\/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> + TVA (dac\u0103 este cazul)<\/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=\"\/ro\/wp-json\/wp\/v2\/glossary\/52?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=\"Adaug\u0103 \u00een co\u0219\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adaug\u0103 \u00een co\u0219\" 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=\"\/ro\/wp-json\/wp\/v2\/glossary\/52?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=\"Adaug\u0103 \u00een co\u0219: &amp;lbquo;Vibration sensor\u201d\" rel=\"nofollow\" data-success_message=\"\u201eVibration sensor\u201d a fost ad\u0103ugat \u00een co\u0219\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adaug\u0103 \u00een co\u0219<\/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\/ro\/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\/ro\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Senzor optic (tahometru cu 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=\"Senzor optic (tahometru cu 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\/ro\/product-category\/parts\/\" rel=\"tag\">Piese<\/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\/ro\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Senzor optic (tahometru cu laser)\">Senzor optic (tahometru cu 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> + TVA (dac\u0103 este cazul)<\/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=\"\/ro\/wp-json\/wp\/v2\/glossary\/52?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=\"Adaug\u0103 \u00een co\u0219\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adaug\u0103 \u00een co\u0219\" 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=\"\/ro\/wp-json\/wp\/v2\/glossary\/52?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=\"Adaug\u0103 \u00een co\u0219: &amp;lbquo;Optical Sensor (Laser Tachometer)\u201d\" rel=\"nofollow\" data-success_message=\"\u201eOptical Sensor (Laser Tachometer)\u201d a fost ad\u0103ugat \u00een co\u0219\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adaug\u0103 \u00een co\u0219<\/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\/ro\/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\/ro\/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=\"Kit de echilibrare a rotorului Vibromera: geant\u0103 de transport, condi\u021bioner de semnal multicanal, analizor portabil, baz\u0103 magnetic\u0103, senzori de vibra\u021bii \u0219i cabluri spiralate.\" 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\/ro\/product-category\/devices\/\" rel=\"tag\">Dispozitive<\/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\/ro\/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> + TVA (dac\u0103 este cazul)<\/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=\"\/ro\/wp-json\/wp\/v2\/glossary\/52?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=\"Adaug\u0103 \u00een co\u0219\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adaug\u0103 \u00een co\u0219\" 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=\"\/ro\/wp-json\/wp\/v2\/glossary\/52?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=\"Adaug\u0103 \u00een co\u0219: &amp;lbquo;Balanset-4\u201d\" rel=\"nofollow\" data-success_message=\"\u201eBalanset-4\u201d a fost ad\u0103ugat \u00een co\u0219\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adaug\u0103 \u00een co\u0219<\/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\/ro\/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\/ro\/product\/magnet-stand\/\" title=\"Stand magnetic 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=\"Baza magnetic\u0103.\" 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\/ro\/product-category\/parts\/\" rel=\"tag\">Piese<\/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\/ro\/product\/magnet-stand\/\" title=\"Stand magnetic Insize-60-kgf\">Stand magnetic 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> + TVA (dac\u0103 este cazul)<\/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=\"\/ro\/wp-json\/wp\/v2\/glossary\/52?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=\"Adaug\u0103 \u00een co\u0219\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adaug\u0103 \u00een co\u0219\" 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=\"\/ro\/wp-json\/wp\/v2\/glossary\/52?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=\"Adaug\u0103 \u00een co\u0219: &amp;lbquo;Magnetic Stand Insize-60-kgf\u201d\" rel=\"nofollow\" data-success_message=\"\u201eMagnetic Stand Insize-60-kgf\u201d a fost ad\u0103ugat \u00een co\u0219\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adaug\u0103 \u00een co\u0219<\/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\/ro\/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\/ro\/product\/reflective-tape\/\" title=\"Band\u0103 reflectorizant\u0103\">\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=\"Band\u0103 reflectorizant\u0103\" 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\/ro\/product-category\/parts\/\" rel=\"tag\">Piese<\/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\/ro\/product\/reflective-tape\/\" title=\"Band\u0103 reflectorizant\u0103\">Band\u0103 reflectorizant\u0103<\/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> + TVA (dac\u0103 este cazul)<\/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=\"\/ro\/wp-json\/wp\/v2\/glossary\/52?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=\"Adaug\u0103 \u00een co\u0219\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adaug\u0103 \u00een co\u0219\" 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=\"\/ro\/wp-json\/wp\/v2\/glossary\/52?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=\"Adaug\u0103 \u00een co\u0219: &amp;lbquo;Reflective tape\u201d\" rel=\"nofollow\" data-success_message=\"\u201eReflective tape\u201d a fost ad\u0103ugat \u00een co\u0219\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adaug\u0103 \u00een co\u0219<\/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\/ro\/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\/ro\/product\/dynamic-balancer-balanset-1a\/\" title=\"Echilibrator dinamic &quot;Balanset-1A&quot; 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=\"Con\u021binutul kitului Balanset-1A cu unitate de interfa\u021b\u0103, senzori, tahometru \u0219i accesorii\" 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\/ro\/product-category\/devices\/\" rel=\"tag\">Dispozitive<\/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\/ro\/product\/dynamic-balancer-balanset-1a\/\" title=\"Echilibrator dinamic &quot;Balanset-1A&quot; OEM\">Echilibrator dinamic \"Balanset-1A\" 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> + TVA (dac\u0103 este cazul)<\/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=\"\/ro\/wp-json\/wp\/v2\/glossary\/52?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=\"Adaug\u0103 \u00een co\u0219\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adaug\u0103 \u00een co\u0219\" 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=\"\/ro\/wp-json\/wp\/v2\/glossary\/52?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=\"Adaug\u0103 \u00een co\u0219: &amp;lbquo;Dynamic balancer \u201cBalanset-1A\u201d OEM\u201d\" rel=\"nofollow\" data-success_message=\"\u201eDynamic balancer \u201cBalanset-1A\u201d OEM\u201d a fost ad\u0103ugat \u00een co\u0219\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adaug\u0103 \u00een co\u0219<\/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>Deschiderea lag\u0103rului<\/strong> - numit\u0103 \u0219i distan\u021ba dintre rulmen\u021bi sau distan\u021ba dintre suporturi - este distan\u021ba de la centru la centru dintre cei doi rulmen\u021bi principali de sus\u021binere ai unui <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/rotor\/\">rotor<\/a>. Oric\u00e2t de simplu ar p\u0103rea, aceast\u0103 singur\u0103 dimensiune este unul dintre cei mai influen\u021bi parametri din toate <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/rotor-dynamics\/\">dinamica rotorului<\/a>, deoarece stabile\u0219te \u00eencovoierea arborelui <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/stiffness\/\">rigiditate<\/a>, iar rigiditatea guverneaz\u0103 la r\u00e2ndul s\u0103u <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/critical-speed\/\">viteze critice<\/a>, devierile maxime, sarcinile suportate de rulmen\u021bi \u0219i \u00eentregul caracter dinamic al rotorului. Pentru un diametru al arborelui \u0219i un material dat, prelungirea deschiderii face arborele mai flexibil \u0219i \u00eei scade vitezele critice; scurtarea acesteia rigidizeaz\u0103 arborele \u0219i le cre\u0219te. Aceast\u0103 p\u00e2rghie - efectul mare al unei modific\u0103ri geometrice modeste - este ceea ce face ca distan\u021ba dintre rulmen\u021bi s\u0103 fie o decizie cheie de proiectare, mai degrab\u0103 dec\u00e2t un aspect secundar.<\/p>\n<h2>1. Defini\u021bie \u0219i principii de baz\u0103<\/h2>\n<p>\u00centre cele dou\u0103 suporturi ale sale, un arbore se comport\u0103 ca o grind\u0103 simplu sprijinit\u0103, iar rotorul este supus acelora\u0219i mecanici care guverneaz\u0103 orice grind\u0103. \u00centinderea este lungimea grinzii \u0219i, deoarece deformarea grinzii cre\u0219te cu cubul lungimii, flexibilitatea rotorului este extrem de sensibil\u0103 la pozi\u021bia rulmen\u021bilor. Tot ceea ce urmeaz\u0103 - viteze critice, limite de deformare, sarcini ale rulmen\u021bilor - decurge din aceast\u0103 rela\u021bie cubic\u0103, astfel \u00eenc\u00e2t merit\u0103 s\u0103 o stabilim cu aten\u021bie \u00eenainte de a trage concluzii de proiectare.<\/p>\n<h2>2. Efectul asupra rigidit\u0103\u021bii rotorului<\/h2>\n<h3>Rela\u021bia grind\u0103-mecanic\u0103<\/h3>\n<p>Rigiditatea arborelui \u00eentre lag\u0103re urmeaz\u0103 ecua\u021bia fundamental\u0103 a grinzii:<\/p>\n<blockquote><p><strong>Deforma\u021bie \u221d L\u00b3 \/ (E \u00d7 I)<\/strong><\/p><\/blockquote>\n<ul>\n<li><strong>L<\/strong> = deschiderea dintre rulmen\u021bi (lungimea).<\/li>\n<li><strong>E<\/strong> = modulul de elasticitate al materialului.<\/li>\n<li><strong>I<\/strong> = momentul de iner\u021bie de suprafa\u021b\u0103 al arborelui, el \u00eensu\u0219i propor\u021bional cu diametrul\u2074.<\/li>\n<li><strong>Perspectiv\u0103 cheie:<\/strong> deformarea - \u0219i, prin urmare, flexibilitatea - cre\u0219te cu <em>cub<\/em> a intervalului.<\/li>\n<\/ul>\n<h3>Implica\u021bii practice<\/h3>\n<ul>\n<li>Dublarea deschiderii palierului cre\u0219te de opt ori deformarea (2\u00b3 = 8).<\/li>\n<li>Reducerea deschiderii cu 25% reduce devia\u021bia cu aproximativ 58%.<\/li>\n<li>Modific\u0103rile mici \u00een amplasarea rulmen\u021bilor pot avea efecte foarte mari asupra rigidit\u0103\u021bii.<\/li>\n<li>Pentru rotoarele lungi, deschiderea este o p\u00e2rghie mai puternic\u0103 dec\u00e2t diametrul arborelui - de\u0219i, \u00eentruc\u00e2t I variaz\u0103 cu diametrul\u2074, diametrul este p\u00e2rghia mai puternic\u0103 atunci c\u00e2nd ambele pot fi modificate.<\/li>\n<\/ul>\n<h2>3. Impactul asupra vitezelor critice<\/h2>\n<h3>Rela\u021bia fundamental\u0103<\/h3>\n<p>Pentru un rotor simplu - un arbore uniform cu o mas\u0103 concentrat\u0103 \u00een centrul s\u0103u - prima <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/natural-frequency\/\">frecven\u021b\u0103 natural\u0103<\/a> este aproximativ:<\/p>\n<ul>\n<li><strong>f \u221d \u221a(k\/m)<\/strong>, unde k este rigiditatea arborelui \u0219i m este masa rotorului.<\/li>\n<li>Deoarece rigiditatea \u221d 1\/L\u00b3, rezult\u0103 c\u0103 <strong>f \u221d 1\/L<sup>3\/2<\/sup><\/strong>.<\/li>\n<li><strong>Regula practic\u0103:<\/strong> prima vitez\u0103 critic\u0103 variaz\u0103 invers cu intervalul dintre rulmen\u021bi ridicat la puterea 1,5.<\/li>\n<\/ul>\n<h3>Implica\u021bii de proiectare<\/h3>\n<ul>\n<li><strong>Deschidere mai scurt\u0103:<\/strong> viteze critice mai mari, un rotor mai rigid, mai potrivit pentru func\u021bionarea la viteze mari.<\/li>\n<li><strong>Deschidere mai lung\u0103:<\/strong> viteze critice mai mici, un rotor mai flexibil care poate trebui s\u0103 func\u021bioneze ca un <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/flexible-rotor\/\">rotor flexibil<\/a>.<\/li>\n<li><strong>Optimizare:<\/strong> un compromis \u00eentre accesibilitate (un interval mai lung faciliteaz\u0103 asamblarea) \u0219i rigiditate (un interval mai scurt se comport\u0103 mai bine din punct de vedere dinamic).<\/li>\n<\/ul>\n<h3>Exemplu lucrat<\/h3>\n<p>Lua\u021bi un rotor de motor cu o prim\u0103 vitez\u0103 critic\u0103 de 3000 RPM la o deschidere a rulmentului de 500 mm:<\/p>\n<ul>\n<li>Cre\u0219te\u021bi deschiderea la 600 mm (o cre\u0219tere de 20%).<\/li>\n<li>Viteza critic\u0103 scade la 3000 \/ (600\/500)<sup>1.5<\/sup> \u2248 2280 RPM.<\/li>\n<li>Acea sc\u0103dere de 24% ar putea apropia periculos viteza critic\u0103 de viteza de func\u021bionare \u2014 exact tipul de deplasare care merit\u0103 verificat \u00een raport cu viteza de func\u021bionare cu un <a href=\"https:\/\/vibromera.eu\/ro\/calculators\/rotor-critical-speed\/\">Calculator de vitez\u0103 critic\u0103 a rotorului<\/a>.<\/li>\n<\/ul>\n<h2>4. Considera\u021bii privind proiectarea<\/h2>\n<p>Pozi\u021bionarea rulmen\u021bilor \u00eenseamn\u0103 reconcilierea mai multor cerin\u021be concurente \u00een acela\u0219i timp.<\/p>\n<h3>Constr\u00e2ngeri mecanice<\/h3>\n<ul>\n<li>Dimensiunile cadrului \u0219i ale carcasei ma\u0219inii.<\/li>\n<li>amplasarea componentelor rotorului, cum ar fi rotoarele \u0219i cuplajele.<\/li>\n<li>Acces pentru \u00eentre\u021binere \u0219i asamblare.<\/li>\n<li>Cerin\u021be privind cuplarea \u0219i ac\u021bionarea.<\/li>\n<\/ul>\n<h3>Cerin\u021be dinamice ale rotorului<\/h3>\n<ul>\n<li><strong>Separarea vitezei critice:<\/strong> amplasa\u021bi rulmen\u021bii astfel \u00eenc\u00e2t vitezele critice s\u0103 fie la \u00b120-30% distan\u021b\u0103 de viteza de func\u021bionare.<\/li>\n<li><strong>Rigid versus flexibil:<\/strong> un interval mai scurt men\u021bine rotorul <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/rigid-rotor\/\">rigid<\/a>; o deschidere mai mare poate for\u021ba func\u021bionarea ca rotor flexibil.<\/li>\n<li><strong>Limite de deformare:<\/strong> men\u021bine\u021bi devia\u021bia maxim\u0103 sub punctul \u00een care provoac\u0103 frecare sau deteriorarea garniturilor.<\/li>\n<li><strong>Sarcini pe rulmen\u021bi:<\/strong> deschiderile mai lungi reduc sarcinile statice ale rulmen\u021bilor pentru o anumit\u0103 greutate a rotorului.<\/li>\n<\/ul>\n<h3>Fabricarea \u0219i asamblarea<\/h3>\n<ul>\n<li>\u00centinderile mai lungi ofer\u0103 mai mult spa\u021biu pentru echilibrare \u0219i asamblare.<\/li>\n<li>Alinierea rulmen\u021bilor este mai u\u0219oar\u0103 atunci c\u00e2nd deschiderea este liber\u0103 \u0219i vizibil\u0103.<\/li>\n<li>\u00centinderile mai scurte sunt mai compacte \u0219i necesit\u0103 mai pu\u021bin material pentru cadru.<\/li>\n<\/ul>\n<h2>5. Efectul asupra \u00eenc\u0103rc\u0103rilor la rulmen\u021bi<\/h2>\n<h3>Distribu\u021bia sarcinii statice<\/h3>\n<p>\u00centinderea rulmen\u021bilor determin\u0103 modul \u00een care greutatea \u0219i for\u021bele rotorului sunt distribuite \u00eentre cele dou\u0103 suporturi:<\/p>\n<ul>\n<li><strong>Deschidere mai lung\u0103:<\/strong> sarcini mai mici ale rulmen\u021bilor pentru aceea\u0219i greutate a rotorului, datorit\u0103 bra\u021bului de p\u00e2rghie mai lung.<\/li>\n<li><strong>Deschidere mai scurt\u0103:<\/strong> sarcini individuale mai mari, dar distribu\u021bie mai uniform\u0103.<\/li>\n<li><strong>Sarcini suspendate:<\/strong> efectul unei <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/overhung-rotor\/\">component\u0103 suspendat\u0103<\/a> este amplificat\u0103 pe m\u0103sur\u0103 ce deschiderea se m\u0103re\u0219te.<\/li>\n<\/ul>\n<h3>Sarcini dinamice din dezechilibru<\/h3>\n<ul>\n<li>Sarcini dinamice la rulment de la <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/unbalance\/\">dezechilibru<\/a> depind de deflec\u021bie.<\/li>\n<li>O deschidere mai mare permite o deformare mai mare, ceea ce poate reduce sarcina transmis\u0103 pe rulment.<\/li>\n<li>Dar aceea\u0219i deformare cre\u0219te amplitudinea vibra\u021biilor.<\/li>\n<li>Prin urmare, proiectantul compar\u0103 durata de via\u021b\u0103 a rulmen\u021bilor cu nivelul de vibra\u021bii - un echilibru care <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/echilibrare\/\">echilibrare<\/a> se schimb\u0103 \u00een favoarea tuturor prin reducerea excita\u021biei \u00een sine.<\/li>\n<\/ul>\n<h2>6. Rela\u021bia cu diametrul arborelui<\/h2>\n<p>\u00centinderea nu se alege niciodat\u0103 \u00een mod izolat; aceasta trebuie c\u00e2nt\u0103rit\u0103 \u00eempreun\u0103 cu diametrul arborelui.<\/p>\n<h3>Raportul deschidere\/diametru (L\/D)<\/h3>\n<ul>\n<li><strong>L\/D &lt; 5:<\/strong> foarte rigide, cu un comportament rigid al rotorului ca norm\u0103.<\/li>\n<li><strong>5 &lt; L\/D &lt; 20:<\/strong> flexibilitate moderat\u0103, care acoper\u0103 majoritatea utilajelor industriale.<\/li>\n<li><strong>L\/D &gt; 20:<\/strong> foarte flexibile, \u00een cazul \u00een care considera\u021biile privind rotorul flexibil devin esen\u021biale.<\/li>\n<\/ul>\n<h3>Strategia de optimizare<\/h3>\n<ul>\n<li><strong>Deschidere fix\u0103:<\/strong> cre\u0219terea diametrului pentru a cre\u0219te vitezele critice.<\/li>\n<li><strong>Diametru fix:<\/strong> reducerea deschiderii pentru a le cre\u0219te.<\/li>\n<li><strong>Optimizare combinat\u0103:<\/strong> regla\u021bi ambele pentru a \u00eendeplini \u00eempreun\u0103 obiectivele de vitez\u0103 critic\u0103 \u0219i de devia\u021bie.<\/li>\n<li><strong>Limit\u0103 practic\u0103:<\/strong> constr\u00e2ngerile de spa\u021biu fixeaz\u0103 de obicei un parametru, l\u0103s\u00e2ndu-l pe cel\u0103lalt ca singura variabil\u0103 liber\u0103.<\/li>\n<\/ul>\n<h2>7. Configura\u021bii cu suporturi multiple<\/h2>\n<h3>Suport standard cu dou\u0103 rulmen\u021bi<\/h3>\n<ul>\n<li>Cel mai comun aranjament.<\/li>\n<li>O singur\u0103 deschidere define\u0219te sistemul.<\/li>\n<li>Analiza \u0219i proiectarea sunt simple.<\/li>\n<\/ul>\n<h3>Sisteme multiportante<\/h3>\n<p>Rotoarele cu mai mult de doi rulmen\u021bi trebuie s\u0103 \u021bin\u0103 cont de mai mult de un interval:<\/p>\n<ul>\n<li><strong>Trei rulmen\u021bi:<\/strong> dou\u0103 deschideri - de exemplu, un motor cu un rulment central suplimentar.<\/li>\n<li><strong>Patru sau mai multe:<\/strong> intervale multiple care necesit\u0103 o analiz\u0103 mai complex\u0103.<\/li>\n<li><strong>Deschidere efectiva:<\/strong> pentru lucr\u0103ri de vibra\u021bii, fiecare <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/mode-shape\/\">form\u0103 de mod<\/a> poate avea propria sa deschidere efectiva.<\/li>\n<li><strong>Dinamica cuplat\u0103:<\/strong> intervalele interac\u021bioneaz\u0103, model\u00e2nd comportamentul general al sistemului.<\/li>\n<\/ul>\n<h2>8. M\u0103surare, verificare \u0219i moderniz\u0103ri<\/h2>\n<h3>Verificarea construc\u021biei<\/h3>\n<ul>\n<li>Masurati distanta reala dintre rulmenti in timpul instalarii.<\/li>\n<li>Confirma\u021bi c\u0103 se potrive\u0219te cu specifica\u021biile de proiectare, de obicei la \u00b15 mm.<\/li>\n<li>\u00cenregistra\u021bi dimensiunile a\u0219a cum au fost construite pentru calculele dinamice ale rotorului.<\/li>\n<li>Verifica\u021bi alinierea axelor rulmen\u021bilor.<\/li>\n<\/ul>\n<h3>Efectul varia\u021biilor de instalare<\/h3>\n<ul>\n<li>Erorile de pozi\u021bionare a rulmen\u021bilor modific\u0103 vitezele critice preconizate.<\/li>\n<li>Nealinierea introduce sarcini suplimentare.<\/li>\n<li>Asezarea fundatiei poate modifica deschiderea efectiva in timp.<\/li>\n<li>Cresterea termica poate modifica deschiderea efectiva la temperatura de functionare.<\/li>\n<\/ul>\n<h3>Cand sa modificati distanta dintre rulmenti<\/h3>\n<p>Repozi\u021bionarea unui rulment este considerat\u0103 atunci c\u00e2nd:<\/p>\n<ul>\n<li>Ma\u0219ina func\u021bioneaz\u0103 prea aproape de o vitez\u0103 critic\u0103.<\/li>\n<li>Deformarea excesiv\u0103 a arborelui provoac\u0103 frec\u0103ri sau probleme de etan\u0219are<\/li>\n<li>Sarcinile la nivelul rulmen\u021bilor sunt prea mari sau distribuite neuniform.<\/li>\n<li>Masina trece de la operarea cu rotor rigid la operarea cu rotor flexibil.<\/li>\n<\/ul>\n<h3>Provocarile modificarii distantei dintre rulmenti<\/h3>\n<ul>\n<li><strong>Modific\u0103ri structurale:<\/strong> pot fi necesare modificari ale cadrului sau ale carcasei.<\/li>\n<li><strong>Impactul alinierii:<\/strong> deplasarea unui rulment afecteaz\u0103 alinierea cu echipamentul ac\u021bionat.<\/li>\n<li><strong>Cost:<\/strong> cheltuielile semnificative de modificare trebuie s\u0103 fie justificate de beneficii.<\/li>\n<li><strong>Validare:<\/strong> sunt necesare teste pentru a confirma \u00eembun\u0103t\u0103\u021birea - inclusiv o nou\u0103 verificare a reziduurilor <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/vibration\/\">vibra\u021bii<\/a> dup\u0103 modificare. Un analizor portabil precum <a href=\"https:\/\/vibromera.eu\/ro\/produs\/balanset-1\/\">Balanset-1A<\/a> face ca aceast\u0103 confirmare s\u0103 fie simpl\u0103, captur\u00e2nd la fa\u021ba locului vibra\u021biile rulmentului \u0219i comportamentul la viteza critic\u0103, astfel \u00eenc\u00e2t modernizarea s\u0103 poat\u0103 fi semnat\u0103 pe baza datelor m\u0103surate, mai degrab\u0103 dec\u00e2t doar pe baza predic\u021biilor.<\/li>\n<\/ul>\n<p>Distanta dintre rulmenti este un parametru geometric fundamental care modeleaza profund comportamentul dinamic al rotorului. Alegerea sa corecta in timpul proiectarii si verificarea sa exacta in timpul instalarii sunt esentiale pentru obtinerea separarii fata de viteza critica, a unor niveluri acceptabile de vibratii si a unei functionari fiabile pe termen lung de care depinde orice masina rotativa.<\/p>\n<hr>\n<p><a href=\"https:\/\/vibromera.eu\/ro\/glossary\/\">\u2190 \u00cenapoi la indexul principal<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Afla\u021bi despre deschiderea lag\u0103relor, distan\u021ba dintre lag\u0103rele de sus\u021binere a rotorului care afecteaz\u0103 critic rigiditatea arborelui, vitezele critice \u0219i caracteristicile de deviere \u00een ma\u0219inile rotative.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"ai_generated_summary":"","footnotes":""},"categories":[109,111],"tags":[],"class_list":["post-52","glossary","type-glossary","status-publish","hentry","category-glossary","category-rotor-balancing"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/ro\/wp-json\/wp\/v2\/glossary\/52","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vibromera.eu\/ro\/wp-json\/wp\/v2\/glossary"}],"about":[{"href":"https:\/\/vibromera.eu\/ro\/wp-json\/wp\/v2\/types\/glossary"}],"version-history":[{"count":2,"href":"https:\/\/vibromera.eu\/ro\/wp-json\/wp\/v2\/glossary\/52\/revisions"}],"predecessor-version":[{"id":102151,"href":"https:\/\/vibromera.eu\/ro\/wp-json\/wp\/v2\/glossary\/52\/revisions\/102151"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/ro\/wp-json\/wp\/v2\/media?parent=52"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/ro\/wp-json\/wp\/v2\/categories?post=52"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/ro\/wp-json\/wp\/v2\/tags?post=52"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}