{"id":52,"date":"2025-10-31T00:25:51","date_gmt":"2025-10-31T00:25:51","guid":{"rendered":"https:\/\/vibromera.eu\/glossary\/bearing-span\/"},"modified":"2026-05-23T22:55:25","modified_gmt":"2026-05-23T22:55:25","slug":"bearing-span","status":"publish","type":"glossary","link":"https:\/\/vibromera.eu\/nb\/glossary\/bearing-span\/","title":{"rendered":"Hva er lagerspenn i rotordynamikk?"},"content":{"rendered":"<h1>Forst\u00e5 lagerspenn i rotordynamikk<\/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\/nb\/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\/nb\/product\/balanset-1\/\" title=\"B\u00e6rbart balanseapparat og vibrasjonsanalysator 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 komplett sett med b\u00e6rbart balanseapparat og vibrasjonsanalysator\" 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\/nb\/product-category\/devices\/\" rel=\"tag\">Enheter<\/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\/nb\/product\/balanset-1\/\" title=\"B\u00e6rbart balanseapparat og vibrasjonsanalysator Balanset-1A\">B\u00e6rbart balanseapparat og vibrasjonsanalysator 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> + MVA (hvis aktuelt)<\/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=\"\/nb\/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=\"Legg i handlekurv\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Legg i handlekurv\" 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=\"\/nb\/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=\"Legg i handlekurv: \u00abPortable balancer &amp; Vibration analyzer Balanset-1A\u00bb\" rel=\"nofollow\" data-success_message=\"\u00abPortable balancer &amp; Vibration analyzer Balanset-1A\u00bb ble lagt til i handlekurven\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Legg i handlekurv<\/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\/nb\/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\/nb\/product\/vibration-sensor\/\" title=\"Vibrasjonssensor\">\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=\"Balanset-1A vibrasjonssensor i n\u00e6rbilde\" 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\/nb\/product-category\/parts\/\" rel=\"tag\">Deler<\/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\/nb\/product\/vibration-sensor\/\" title=\"Vibrasjonssensor\">Vibrasjonssensor<\/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> + MVA (hvis aktuelt)<\/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=\"\/nb\/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=\"Legg i handlekurv\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Legg i handlekurv\" 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=\"\/nb\/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=\"Legg i handlekurv: \u00abVibration sensor\u00bb\" rel=\"nofollow\" data-success_message=\"\u00abVibration sensor\u00bb ble lagt til i handlekurven\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Legg i handlekurv<\/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\/nb\/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\/nb\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Optisk sensor (lasertakometer)\">\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=\"Optisk sensor (lasertakometer)\" 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\/nb\/product-category\/parts\/\" rel=\"tag\">Deler<\/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\/nb\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Optisk sensor (lasertakometer)\">Optisk sensor (lasertakometer)<\/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> + MVA (hvis aktuelt)<\/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=\"\/nb\/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=\"Legg i handlekurv\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Legg i handlekurv\" 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=\"\/nb\/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=\"Legg i handlekurv: \u00abOptical Sensor (Laser Tachometer)\u00bb\" rel=\"nofollow\" data-success_message=\"\u00abOptical Sensor (Laser Tachometer)\u00bb ble lagt til i handlekurven\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Legg i handlekurv<\/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\/nb\/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\/nb\/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 rotorbalanseringssett: b\u00e6reveske, flerkanals signalbehandler, h\u00e5ndholdt analysator, magnetisk base, vibrasjonssensorer og spiralkabler.\" 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\/nb\/product-category\/devices\/\" rel=\"tag\">Enheter<\/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\/nb\/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> + MVA (hvis aktuelt)<\/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=\"\/nb\/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=\"Legg i handlekurv\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Legg i handlekurv\" 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=\"\/nb\/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=\"Legg i handlekurv: \u00abBalanset-4\u00bb\" rel=\"nofollow\" data-success_message=\"\u00abBalanset-4\u00bb ble lagt til i handlekurven\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Legg i handlekurv<\/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\/nb\/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\/nb\/product\/magnet-stand\/\" title=\"Magnetisk stativ 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=\"Magnetisk base.\" 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\/nb\/product-category\/parts\/\" rel=\"tag\">Deler<\/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\/nb\/product\/magnet-stand\/\" title=\"Magnetisk stativ Insize-60-kgf\">Magnetisk stativ 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> + MVA (hvis aktuelt)<\/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=\"\/nb\/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=\"Legg i handlekurv\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Legg i handlekurv\" 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=\"\/nb\/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=\"Legg i handlekurv: \u00abMagnetic Stand Insize-60-kgf\u00bb\" rel=\"nofollow\" data-success_message=\"\u00abMagnetic Stand Insize-60-kgf\u00bb ble lagt til i handlekurven\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Legg i handlekurv<\/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\/nb\/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\/nb\/product\/reflective-tape\/\" title=\"Refleksb\u00e5nd\">\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=\"Refleksb\u00e5nd\" 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\/nb\/product-category\/parts\/\" rel=\"tag\">Deler<\/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\/nb\/product\/reflective-tape\/\" title=\"Refleksb\u00e5nd\">Refleksb\u00e5nd<\/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> + MVA (hvis aktuelt)<\/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=\"\/nb\/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=\"Legg i handlekurv\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Legg i handlekurv\" 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=\"\/nb\/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=\"Legg i handlekurv: \u00abReflective tape\u00bb\" rel=\"nofollow\" data-success_message=\"\u00abReflective tape\u00bb ble lagt til i handlekurven\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Legg i handlekurv<\/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\/nb\/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\/nb\/product\/dynamic-balancer-balanset-1a\/\" title=\"Dynamisk balanseringsapparat &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=\"Balanset-1A-settet inneholder grensesnittenhet, sensorer, turteller og tilbeh\u00f8r\" 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\/nb\/product-category\/devices\/\" rel=\"tag\">Enheter<\/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\/nb\/product\/dynamic-balancer-balanset-1a\/\" title=\"Dynamisk balanseringsapparat &quot;Balanset-1A&quot; OEM\">Dynamisk balanseringsapparat \"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> + MVA (hvis aktuelt)<\/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=\"\/nb\/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=\"Legg i handlekurv\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Legg i handlekurv\" 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=\"\/nb\/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=\"Legg i handlekurv: \u00abDynamic balancer \u201cBalanset-1A\u201d OEM\u00bb\" rel=\"nofollow\" data-success_message=\"\u00abDynamic balancer \u201cBalanset-1A\u201d OEM\u00bb ble lagt til i handlekurven\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Legg i handlekurv<\/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>Lagerspenn<\/strong> \u2014 ogs\u00e5 kalt lageravstand eller st\u00f8tteavstand \u2014 er avstanden fra senter til senter mellom de to hovedst\u00f8ttelagrene p\u00e5 en <a href=\"https:\/\/vibromera.eu\/nb\/glossary\/rotor\/\">rotor<\/a>. Selv om det h\u00f8res enkelt ut, er denne ene dimensjonen en av de mest avgj\u00f8rende faktorene i hele <a href=\"https:\/\/vibromera.eu\/nb\/glossary\/rotor-dynamics\/\">rotordynamikk<\/a>, fordi den bestemmer akselens b\u00f8yning <a href=\"https:\/\/vibromera.eu\/nb\/glossary\/stiffness\/\">stivhet<\/a>, og stivheten p\u00e5virker igjen <a href=\"https:\/\/vibromera.eu\/nb\/glossary\/critical-speed\/\">kritiske hastigheter<\/a>, de maksimale nedb\u00f8yningene, belastningene som lagrene m\u00e5 b\u00e6re, og rotorens samlede dynamiske egenskaper. For en gitt akseldiameter og et gitt materiale vil en forlengelse av spennet gj\u00f8re akselen mer fleksibel og senke dens kritiske hastigheter; en forkortelse vil gj\u00f8re akselen stivere og \u00f8ke dem. Denne virkningen \u2013 stor effekt av en beskjeden geometrisk endring \u2013 er det som gj\u00f8r lagerspennet til et sentralt designvalg, snarere enn en ettertanke.<\/p>\n<h2>1. Definisjon og grunnleggende prinsipper<\/h2>\n<p>Mellom de to st\u00f8ttepunktene oppf\u00f8rer en aksel seg som en enkeltst\u00f8ttet bjelke, og de samme mekaniske lovene som gjelder for enhver bjelke, gjelder ogs\u00e5 for rotoren. Spennvidden er bjelkens lengde, og siden bjelkens nedb\u00f8yning er proporsjonal med lengdens kubikk, er rotorens fleksibilitet sv\u00e6rt f\u00f8lsom for hvor lagrene er plassert. Alt som f\u00f8lger \u2013 kritiske hastigheter, avb\u00f8yningsgrenser, lagerbelastninger \u2013 f\u00f8lger av dette kubiske forholdet, s\u00e5 det er verdt \u00e5 fastsl\u00e5 dette n\u00f8ye f\u00f8r man trekker konklusjoner om designet.<\/p>\n<h2>2. Innvirkning p\u00e5 rotorens stivhet<\/h2>\n<h3>Forholdet mellom str\u00e5le og mekanikk<\/h3>\n<p>Stivheten til akselen mellom lagrene f\u00f8lger den grunnleggende bjelkeligningen:<\/p>\n<blockquote><p><strong>Nedb\u00f8yning \u221d L\u00b3 \/ (E \u00d7 I)<\/strong><\/p><\/blockquote>\n<ul>\n<li><strong>L<\/strong> = spennvidde (lengde).<\/li>\n<li><strong>E<\/strong> = materialets elastisitetsmodul.<\/li>\n<li><strong>jeg<\/strong> = akselens arealtreghetsmoment, som i seg selv er proporsjonalt med diameteren i fjerde potens.<\/li>\n<li><strong>Viktig innsikt:<\/strong> b\u00f8yningen \u2014 og dermed fleksibiliteten \u2014 \u00f8ker med <em>kube<\/em> av spennet.<\/li>\n<\/ul>\n<h3>Praktiske konsekvenser<\/h3>\n<ul>\n<li>Hvis man dobler lageravstanden, \u00f8ker nedb\u00f8yningen \u00e5tte ganger (2\u00b3 = 8).<\/li>\n<li>En reduksjon av spennvidden med 25 % reduserer nedb\u00f8yningen med omtrent 58 %.<\/li>\n<li>Selv sm\u00e5 endringer i lagrenes plassering kan ha stor innvirkning p\u00e5 stivheten.<\/li>\n<li>For lange rotorer har spennvidden st\u00f8rre innvirkning enn akseldiameteren \u2013 men siden I er proporsjonalt med diameteren i fjerde potens, er diameteren den viktigste faktoren n\u00e5r begge deler kan endres.<\/li>\n<\/ul>\n<h2>3. Innvirkning p\u00e5 kritiske hastigheter<\/h2>\n<h3>Det grunnleggende forholdet<\/h3>\n<p>For en enkel rotor \u2013 en jevn aksel med en konsentrert masse i sentrum \u2013 er den f\u00f8rste <a href=\"https:\/\/vibromera.eu\/nb\/glossary\/natural-frequency\/\">naturlig frekvens<\/a> er omtrent:<\/p>\n<ul>\n<li><strong>f \u221d \u221a(k\/m)<\/strong>, der k er akselstivheten og m er rotormassen.<\/li>\n<li>Siden stivheten er proporsjonal med 1\/L\u00b3, f\u00f8lger det at <strong>f \u221d 1\/L<sup>3\/2<\/sup><\/strong>.<\/li>\n<li><strong>Praktisk regel:<\/strong> Den f\u00f8rste kritiske hastigheten er omvendt proporsjonal med b\u00e6respennet opph\u00f8yd til 1,5.<\/li>\n<\/ul>\n<h3>Konsekvenser for designet<\/h3>\n<ul>\n<li><strong>Kortere spennvidde:<\/strong> h\u00f8yere kritiske hastigheter, en stivere rotor, bedre egnet for drift ved h\u00f8ye hastigheter.<\/li>\n<li><strong>Lengre spennvidde:<\/strong> lavere kritiske hastigheter, en mer fleksibel rotor som kanskje m\u00e5 fungere som en <a href=\"https:\/\/vibromera.eu\/nb\/glossary\/flexible-rotor\/\">fleksibel rotor<\/a>.<\/li>\n<li><strong>Optimalisering:<\/strong> en avveining mellom tilgjengelighet (en lengre spennvidde gj\u00f8r monteringen enklere) og stivhet (en kortere spennvidde gir bedre dynamiske egenskaper).<\/li>\n<\/ul>\n<h3>Utarbeidet eksempel<\/h3>\n<p>Ta en motorrotor med en f\u00f8rste kritisk hastighet p\u00e5 3000 o\/min ved en lagerafstand p\u00e5 500 mm:<\/p>\n<ul>\n<li>\u00d8k spennvidden til 600 mm (en \u00f8kning p\u00e5 20 %).<\/li>\n<li>Den kritiske hastigheten synker til 3000 \/ (600\/500)<sup>1.5<\/sup> \u2248 2600 O\/MIN.<\/li>\n<li>Et fall p\u00e5 13 % kan f\u00f8re til at den kritiske hastigheten kommer farlig n\u00e6r driftshastigheten \u2013 akkurat den type endring det er verdt \u00e5 sjekke opp mot kj\u00f8rehastigheten ved hjelp av en <a href=\"https:\/\/vibromera.eu\/nb\/calculators\/rotor-critical-speed\/\">Kalkulator for kritisk rotorhastighet<\/a>.<\/li>\n<\/ul>\n<h2>4. Designhensyn<\/h2>\n<p>\u00c5 plassere lagre inneb\u00e6rer \u00e5 avveie flere motstridende krav samtidig.<\/p>\n<h3>Mekaniske begrensninger<\/h3>\n<ul>\n<li>Dimensjoner p\u00e5 maskinramme og hus.<\/li>\n<li>Plasseringen av rotorkomponenter som l\u00f8pehjul og koblinger.<\/li>\n<li>Tilgang for vedlikehold og montering.<\/li>\n<li>Krav til kobling og drivverk.<\/li>\n<\/ul>\n<h3>Krav til rotordynamikk<\/h3>\n<ul>\n<li><strong>Separasjon ved kritisk hastighet:<\/strong> Plasser lagrene slik at kritiske hastigheter ligger \u00b120\u201330 % fra driftshastigheten.<\/li>\n<li><strong>Stivt kontra fleksibelt:<\/strong> En kortere spennvidde holder rotoren <a href=\"https:\/\/vibromera.eu\/nb\/glossary\/rigid-rotor\/\">stiv<\/a>; en lengre spennvidde kan f\u00f8re til at den m\u00e5 fungere som en fleksibel rotor.<\/li>\n<li><strong>B\u00f8yegrenser:<\/strong> S\u00f8rg for at maksimal nedb\u00f8yning holdes under det punktet der det oppst\u00e5r gnidning eller skade p\u00e5 tetningen.<\/li>\n<li><strong>Lagerbelastninger:<\/strong> St\u00f8rre spennvidder reduserer den statiske belastningen p\u00e5 lagrene for en gitt rotorvekt.<\/li>\n<\/ul>\n<h3>Produksjon og montering<\/h3>\n<ul>\n<li>St\u00f8rre spenn gir mer plass til balansering og montering.<\/li>\n<li>Det er lettere \u00e5 justere lagrene n\u00e5r spennet er \u00e5pent og synlig.<\/li>\n<li>Kortere spennvidder er mer kompakte og krever mindre materialmengde til b\u00e6rende konstruksjon.<\/li>\n<\/ul>\n<h2>5. Innvirkning p\u00e5 lagerbelastninger<\/h2>\n<h3>Statisk lastfordeling<\/h3>\n<p>Lageravstanden bestemmer hvordan rotorens vekt og krefter fordeles mellom de to st\u00f8ttepunktene:<\/p>\n<ul>\n<li><strong>Lengre spennvidde:<\/strong> lavere belastning p\u00e5 lagrene ved samme rotorvekt, takket v\u00e6re den lengre l\u00f8ftearmen.<\/li>\n<li><strong>Kortere spennvidde:<\/strong> st\u00f8rre belastning p\u00e5 hver enkelt del, men jevnere fordeling.<\/li>\n<li><strong>Overhengende last:<\/strong> effekten av en <a href=\"https:\/\/vibromera.eu\/nb\/glossary\/overhung-rotor\/\">utkragende del<\/a> forsterkes etter hvert som spennvidden \u00f8ker.<\/li>\n<\/ul>\n<h3>Dynamiske belastninger som f\u00f8lge av ubalanse<\/h3>\n<ul>\n<li>Dynamiske lagerbelastninger fra <a href=\"https:\/\/vibromera.eu\/nb\/glossary\/unbalance\/\">ubalanse<\/a> avhenger av nedb\u00f8yningen.<\/li>\n<li>En st\u00f8rre spennvidde gir st\u00f8rre nedb\u00f8yning, noe som kan redusere den overf\u00f8rte lagerbelastningen.<\/li>\n<li>Men nettopp denne avb\u00f8yningen \u00f8ker svingningsamplituden.<\/li>\n<li>Designeren m\u00e5 derfor velge mellom lagrets levetid og vibrasjonsniv\u00e5et \u2013 en avveining som er viktig <a href=\"https:\/\/vibromera.eu\/nb\/glossary\/balansering\/\">balansering<\/a> endrer situasjonen til alles fordel ved \u00e5 redusere selve stimulansen.<\/li>\n<\/ul>\n<h2>6. Forholdet til akseldiameteren<\/h2>\n<p>Spennet velges aldri isolert; det m\u00e5 vurderes i sammenheng med akseldiameteren.<\/p>\n<h3>Forholdet mellom spennvidde og diameter (L\/D)<\/h3>\n<ul>\n<li><strong>L\/D &lt; 5:<\/strong> sv\u00e6rt stiv, og oppf\u00f8rselen til en stiv rotor er det vanlige.<\/li>\n<li><strong>5 &lt; L\/D &lt; 20:<\/strong> moderat fleksibilitet, som dekker de fleste typer industrimaskiner.<\/li>\n<li><strong>L\/D &gt; 20:<\/strong> sv\u00e6rt fleksibel, der hensyn til fleksibel rotor blir avgj\u00f8rende.<\/li>\n<\/ul>\n<h3>Optimaliseringsstrategi<\/h3>\n<ul>\n<li><strong>Fast spennvidde:<\/strong> \u00f8ke diameteren for \u00e5 heve de kritiske hastighetene.<\/li>\n<li><strong>Fast diameter:<\/strong> Reduser spennvidden for \u00e5 heve dem.<\/li>\n<li><strong>Kombinert optimalisering:<\/strong> justere begge deler slik at m\u00e5lene for kritisk hastighet og nedb\u00f8yning oppn\u00e5s samtidig.<\/li>\n<li><strong>Praktisk grense:<\/strong> P\u00e5 grunn av plassbegrensninger fastsettes vanligvis \u00e9n parameter, slik at den andre blir den eneste frie variabelen.<\/li>\n<\/ul>\n<h2>7. Konfigurasjoner med flere lagre<\/h2>\n<h3>Standardst\u00f8tte med to lagre<\/h3>\n<ul>\n<li>Den vanligste l\u00f8sningen.<\/li>\n<li>Systemet best\u00e5r av \u00e9n enkelt spennvidde.<\/li>\n<li>Analyse og utforming er enkelt.<\/li>\n<\/ul>\n<h3>Systemer med flere lagre<\/h3>\n<p>Rotorer med mer enn to lagre har mer enn \u00e9n spennvidde \u00e5 ta hensyn til:<\/p>\n<ul>\n<li><strong>Tre lagre:<\/strong> to spenn \u2013 for eksempel en motor med et ekstra midtlager.<\/li>\n<li><strong>Fire eller flere:<\/strong> flere spenn som krever mer omfattende beregninger.<\/li>\n<li><strong>Effektivt spenn:<\/strong> ved vibrasjonsarbeid, hver <a href=\"https:\/\/vibromera.eu\/nb\/glossary\/mode-shape\/\">modusform<\/a> kan ha sin egen effektive rekkevidde.<\/li>\n<li><strong>Koblet dynamikk:<\/strong> Spennene p\u00e5virker hverandre og bestemmer systemets samlede oppf\u00f8rsel.<\/li>\n<\/ul>\n<h2>8. M\u00e5ling, verifisering og ettermontering<\/h2>\n<h3>Kontroll av sluttoppm\u00e5ling<\/h3>\n<ul>\n<li>M\u00e5l den faktiske b\u00e6rebredden under monteringen.<\/li>\n<li>Kontroller at det stemmer overens med designspesifikasjonen, vanligvis med en avvik p\u00e5 \u00b15 mm.<\/li>\n<li>Noter opp de faktiske m\u00e5lene for beregningene av rotordynamikken.<\/li>\n<li>Kontroller at lagerets senterlinjer er p\u00e5 linje.<\/li>\n<\/ul>\n<h3>Virkningen av variasjoner i installasjonen<\/h3>\n<ul>\n<li>Feil i lagerposisjonen f\u00f8rer til endringer i de beregnede kritiske hastighetene.<\/li>\n<li>Feilinnretting medf\u00f8rer ekstra belastninger.<\/li>\n<li>Settninger i fundamentet kan endre den effektive spennvidden over tid.<\/li>\n<li>Termisk utvidelse kan endre den effektive spennvidden ved driftstemperatur.<\/li>\n<\/ul>\n<h3>N\u00e5r b\u00f8r man endre lageravstanden<\/h3>\n<p>Man vurderer \u00e5 justere et lager n\u00e5r:<\/p>\n<ul>\n<li>Maskinen g\u00e5r for n\u00e6r en kritisk hastighet.<\/li>\n<li>Overdreven akselavb\u00f8yning som for\u00e5rsaker gnags\u00e5r eller tetningsproblemer<\/li>\n<li>Belastningen p\u00e5 lagrene er for h\u00f8y eller fordelt ujevnt.<\/li>\n<li>Konstruksjonen veksler mellom drift med stiv og fleksibel rotor.<\/li>\n<\/ul>\n<h3>Utfordringer ved endring av spennvidde<\/h3>\n<ul>\n<li><strong>Strukturelle endringer:<\/strong> Det kan v\u00e6re n\u00f8dvendig \u00e5 endre rammen eller huset.<\/li>\n<li><strong>Virkning p\u00e5 innretting:<\/strong> Hvis man flytter et lager, p\u00e5virker det innrettingen i forhold til det drivende utstyret.<\/li>\n<li><strong>Koste:<\/strong> Omkostninger ved vesentlige endringer m\u00e5 rettferdiggj\u00f8res av fordelene.<\/li>\n<li><strong>Validering:<\/strong> Det m\u00e5 gjennomf\u00f8res tester for \u00e5 bekrefte forbedringen \u2013 herunder en ny kontroll av restverdiene <a href=\"https:\/\/vibromera.eu\/nb\/glossary\/vibration\/\">vibrasjon<\/a> etter endringen. En b\u00e6rbar analysator som <a href=\"https:\/\/vibromera.eu\/nb\/produkt\/balanset-1\/\">Balanset-1A<\/a> gj\u00f8r denne bekreftelsen enkel, ved \u00e5 registrere lagervibrasjon og oppf\u00f8rselen ved kritisk hastighet p\u00e5 stedet, slik at ettermonteringen kan godkjennes p\u00e5 bakgrunn av m\u00e5lte data i stedet for kun prognoser.<\/li>\n<\/ul>\n<p>Lageravstanden er en grunnleggende geometrisk parameter som i stor grad p\u00e5virker rotorens dynamiske oppf\u00f8rsel. Det er avgj\u00f8rende \u00e5 velge riktig avstand under prosjekteringen og kontrollere den n\u00f8ye under installasjonen for \u00e5 oppn\u00e5 den n\u00f8dvendige avstanden til kritisk hastighet, akseptable vibrasjonsniv\u00e5er og p\u00e5litelig drift over lang tid \u2013 noe alle roterende maskiner er avhengige av.<\/p>\n<hr>\n<p><a href=\"https:\/\/vibromera.eu\/nb\/glossary\/\">\u2190 Tilbake til hovedindeksen<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>L\u00e6r om lagerspenn, avstanden mellom rotorst\u00f8ttelagre som kritisk p\u00e5virker akselstivhet, kritiske hastigheter og avb\u00f8yningsegenskaper i roterende maskineri.<\/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\/nb\/wp-json\/wp\/v2\/glossary\/52","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vibromera.eu\/nb\/wp-json\/wp\/v2\/glossary"}],"about":[{"href":"https:\/\/vibromera.eu\/nb\/wp-json\/wp\/v2\/types\/glossary"}],"version-history":[{"count":1,"href":"https:\/\/vibromera.eu\/nb\/wp-json\/wp\/v2\/glossary\/52\/revisions"}],"predecessor-version":[{"id":101422,"href":"https:\/\/vibromera.eu\/nb\/wp-json\/wp\/v2\/glossary\/52\/revisions\/101422"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/nb\/wp-json\/wp\/v2\/media?parent=52"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/nb\/wp-json\/wp\/v2\/categories?post=52"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/nb\/wp-json\/wp\/v2\/tags?post=52"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}