{"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\/sl\/glossary\/shaft-whip\/","title":{"rendered":"Kaj je vibracija gredi? Pojasnjena huda nestabilnost rotorja"},"content":{"rendered":"<h1>Razumevanje bi\u010danja gredi v vrte\u010dih se strojih<\/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\/sl\/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\/sl\/product\/balanset-1\/\" title=\"Prenosni balanser in analizator vibracij 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=\"Prenosni uravnote\u017enik in analizator vibracij Balanset-1A v popolnem kompletu\" 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\/sl\/product-category\/devices\/\" rel=\"tag\">Naprave<\/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\/sl\/product\/balanset-1\/\" title=\"Prenosni balanser in analizator vibracij Balanset-1A\">Prenosni balanser in analizator vibracij 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> + DDV (\u010de je primerno)<\/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=\"\/sl\/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 v ko\u0161arico\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Dodaj v ko\u0161arico\" 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=\"\/sl\/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 v ko\u0161arico: \u201cPortable balancer &amp; Vibration analyzer Balanset-1A\u201d\" rel=\"nofollow\" data-success_message=\"\u201cPortable balancer &amp; Vibration analyzer Balanset-1A\u201d je bil dodan v va\u0161o ko\u0161arico\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Dodaj v ko\u0161arico<\/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\/sl\/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\/sl\/product\/vibration-sensor\/\" title=\"Senzor vibracij\">\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=\"Senzor vibracij Balanset-1A od blizu\" 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\/sl\/product-category\/parts\/\" rel=\"tag\">Deli<\/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\/sl\/product\/vibration-sensor\/\" title=\"Senzor vibracij\">Senzor vibracij<\/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> + DDV (\u010de je primerno)<\/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=\"\/sl\/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 v ko\u0161arico\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Dodaj v ko\u0161arico\" 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=\"\/sl\/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 v ko\u0161arico: \u201cVibration sensor\u201d\" rel=\"nofollow\" data-success_message=\"\u201cVibration sensor\u201d je bil dodan v va\u0161o ko\u0161arico\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Dodaj v ko\u0161arico<\/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\/sl\/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\/sl\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Opti\u010dni senzor (laserski tahometer)\">\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\u010dni senzor (laserski tahometer)\" 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\/sl\/product-category\/parts\/\" rel=\"tag\">Deli<\/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\/sl\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Opti\u010dni senzor (laserski tahometer)\">Opti\u010dni senzor (laserski tahometer)<\/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> + DDV (\u010de je primerno)<\/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=\"\/sl\/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 v ko\u0161arico\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Dodaj v ko\u0161arico\" 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=\"\/sl\/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 v ko\u0161arico: \u201cOptical Sensor (Laser Tachometer)\u201d\" rel=\"nofollow\" data-success_message=\"\u201cOptical Sensor (Laser Tachometer)\u201d je bil dodan v va\u0161o ko\u0161arico\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Dodaj v ko\u0161arico<\/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\/sl\/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\/sl\/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=\"Komplet za uravnote\u017eenje rotorjev Vibromera: torba za prena\u0161anje, ve\u010dkanalni pretvornik signala, ro\u010dni analizator, magnetna podlaga, senzorji vibracij in spiralni kabli.\" 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\/sl\/product-category\/devices\/\" rel=\"tag\">Naprave<\/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\/sl\/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> + DDV (\u010de je primerno)<\/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=\"\/sl\/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 v ko\u0161arico\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Dodaj v ko\u0161arico\" 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=\"\/sl\/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 v ko\u0161arico: \u201cBalanset-4\u201d\" rel=\"nofollow\" data-success_message=\"\u201cBalanset-4\u201d je bil dodan v va\u0161o ko\u0161arico\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Dodaj v ko\u0161arico<\/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\/sl\/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\/sl\/product\/magnet-stand\/\" title=\"Magnetno stojalo 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=\"Magnetna osnova.\" 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\/sl\/product-category\/parts\/\" rel=\"tag\">Deli<\/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\/sl\/product\/magnet-stand\/\" title=\"Magnetno stojalo Insize-60-kgf\">Magnetno stojalo 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> + DDV (\u010de je primerno)<\/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=\"\/sl\/wp-json\/wp\/v2\/glossary\/235?add-to-cart=1852\" data-quantity=\"1\" data-product_id=\"1852\" 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data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Dodaj v ko\u0161arico<\/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\/sl\/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\/sl\/product\/reflective-tape\/\" title=\"Odsevni trak\">\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=\"Odsevni trak\" 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\/sl\/product-category\/parts\/\" rel=\"tag\">Deli<\/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\/sl\/product\/reflective-tape\/\" title=\"Odsevni trak\">Odsevni trak<\/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> + DDV (\u010de je primerno)<\/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=\"\/sl\/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 v ko\u0161arico\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Dodaj v ko\u0161arico\" 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=\"\/sl\/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 v ko\u0161arico: \u201cReflective tape\u201d\" rel=\"nofollow\" data-success_message=\"\u201cReflective tape\u201d je bil dodan v va\u0161o ko\u0161arico\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Dodaj v ko\u0161arico<\/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\/sl\/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\/sl\/product\/dynamic-balancer-balanset-1a\/\" title=\"Dinami\u010dni uravnote\u017eevalnik &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=\"Vsebina kompleta Balanset-1A z vmesni\u0161ko enoto, senzorji, tahometrom in dodatno opremo\" 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\/sl\/product-category\/devices\/\" rel=\"tag\">Naprave<\/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\/sl\/product\/dynamic-balancer-balanset-1a\/\" title=\"Dinami\u010dni uravnote\u017eevalnik &quot;Balanset-1A&quot; OEM\">Dinami\u010dni uravnote\u017eevalnik \"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> + DDV (\u010de je primerno)<\/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=\"\/sl\/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 v ko\u0161arico\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Dodaj v ko\u0161arico\" 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=\"\/sl\/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 v ko\u0161arico: \u201cDynamic balancer \u201cBalanset-1A\u201d OEM\u201d\" rel=\"nofollow\" data-success_message=\"\u201cDynamic balancer \u201cBalanset-1A\u201d OEM\u201d je bil dodan v va\u0161o ko\u0161arico\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Dodaj v ko\u0161arico<\/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\u010danje gredi<\/strong> - znan kot <em>oljni bi\u010d<\/em> kadar izvira iz hidrodinami\u010dnih le\u017eajev \u2014 je huda oblika <a href=\"https:\/\/vibromera.eu\/sl\/glossary\/rotor-instability\/\">nestabilnost rotorja<\/a> za katero je zna\u010dilno nasilje <a href=\"https:\/\/vibromera.eu\/sl\/glossary\/self-excited-vibration\/\">samovzburjene vibracije<\/a>. Do tega pride, ko rotor v le\u017eajih s teko\u010dinskim filmom prese\u017ee kriti\u010dno mejno hitrost, ki je obi\u010dajno pribli\u017eno dvakratnik prve <a href=\"https:\/\/vibromera.eu\/sl\/glossary\/critical-speed\/\">kriti\u010dna hitrost<\/a>. Ko se bi\u010d zasidra, se frekvenca vibracij \u00bbpritrdi\u00ab na prvi <a href=\"https:\/\/vibromera.eu\/sl\/glossary\/natural-frequency\/\">naravna frekvenca<\/a> in tam ostane ne glede na nadaljnje pove\u010danje hitrosti, pri \u010demer je amplituda omejena le z igri\u0161\u010dem le\u017eaja \u2013 ali s katastrofalno okvaro. To je eden najnevarnej\u0161ih pojavov pri visokohitrostnih strojih, saj se pojavi nenadoma, v nekaj sekundah naraste do uni\u010dujo\u010dih vrednosti in ga ni mogo\u010de odpraviti z <a href=\"https:\/\/vibromera.eu\/sl\/glossary\/uravnotezenje\/\">uravnote\u017eenje<\/a> ali kakr\u0161no koli drugo obi\u010dajno popravilo. Zahteva takoj\u0161njo zaustavitev, ki ji morajo slediti spremembe v sistemu le\u017eajev, da se prepre\u010di ponovitev okvare.<\/p>\n<h2>1. Razvoj: od vrtin\u010denja olja do udarjanja gredi<\/h2>\n<p>Padec redko pride nepri\u010dakovano \u2013 gre za zaklju\u010dno fazo \u0161tiristopenjskega razvoja, ki ga pozoren analitik lahko zazna \u017ee dolgo pred tem, ko pride do uni\u010dujo\u010de faze.<\/p>\n<h3>Faza 1 \u2013 Stabilno delovanje<\/h3>\n<ul>\n<li>Rotor deluje pod pragom nestabilnosti.<\/li>\n<li>Samo normalno <a href=\"https:\/\/vibromera.eu\/sl\/glossary\/forced-vibration\/\">prisilno vibriranje<\/a> od <a href=\"https:\/\/vibromera.eu\/sl\/glossary\/unbalance\/\">neuravnote\u017eenost<\/a> je prisoten.<\/li>\n<li>Oljni film v le\u017eaju zagotavlja stabilno in dobro bla\u017eeno oporo.<\/li>\n<\/ul>\n<h3>2. stopnja \u2013 pojav oljnega vrtinca<\/h3>\n<p>Ko hitrost prese\u017ee pribli\u017eno dvakratno vrednost prve kriti\u010dne hitrosti, <a href=\"https:\/\/vibromera.eu\/sl\/glossary\/oil-whirl\/\">oljni vrtinec<\/a> se za\u010dne:<\/p>\n<ul>\n<li>A <a href=\"https:\/\/vibromera.eu\/sl\/glossary\/sub-synchronous\/\">subsinhrono<\/a> vibracije se pojavijo pri pribli\u017eno 0,43\u20130,48-kratni hitrosti gredi.<\/li>\n<li>Amplituda je sprva zmerna in odvisna od hitrosti<\/li>\n<li>Frekvenca vrtenja se sorazmerno pove\u010duje s hitrostjo gredi.<\/li>\n<li>Lahko je prekinjajo\u010de ali neprekinjajo\u010de.<\/li>\n<li>Lahko deluje skupaj z obi\u010dajnim 1\u00d7 nihanjem, ki nastane zaradi neuravnote\u017eenosti.<\/li>\n<\/ul>\n<h3>3. stopnja \u2013 Prehod v \u00bbwhip\u00ab<\/h3>\n<p>Ko se frekvenca vzpenjajo\u010dega se oljnega vrtinca dovolj pove\u010da, da se ujame s prvo lastno frekvenco, se obna\u0161anje nenadoma spremeni:<\/p>\n<ul>\n<li><strong>Frekven\u010dna sinhronizacija:<\/strong> frekvenca vibracij preneha slediti hitrosti in se ustalijo na lastni frekvenci.<\/li>\n<li><strong>Resonan\u010dno oja\u010danje:<\/strong> amplituda se drasti\u010dno pove\u010da, ker je sistem zdaj v <a href=\"https:\/\/vibromera.eu\/sl\/glossary\/resonance\/\">resonanca<\/a>.<\/li>\n<li><strong>Nenaden za\u010detek:<\/strong> prehod iz vrtinca v udarec je lahko prakti\u010dno takoj\u0161en.<\/li>\n<li><strong>Neodvisnost od hitrosti:<\/strong> nadaljnje pove\u010danje hitrosti ne spreminja ve\u010d frekvence, temve\u010d le amplitudo.<\/li>\n<\/ul>\n<h3>4. stopnja \u2013 Udarec gredi (kriti\u010dno stanje)<\/h3>\n<ul>\n<li>Vibracija poteka s konstantno frekvenco \u2013 prvo lastno frekvenco, ki zna\u0161a obi\u010dajno 40\u201360 Hz.<\/li>\n<li>Amplituda dose\u017ee 5- do 20-kratno vrednost obi\u010dajnih vibracij zaradi neuravnote\u017eenosti.<\/li>\n<li>Gred lahko dose\u017ee mejne vrednosti igre le\u017eaja.<\/li>\n<li>Le\u017eaji in olje se hitro segrejejo.<\/li>\n<li>\u010ce se stroja ne ustavi, lahko v nekaj minutah pride do katastrofalne okvare.<\/li>\n<\/ul>\n<h2>2. Fizi\u010dni mehanizem<\/h2>\n<p>Vibracije poganjajo sile, ki izhajajo iz same dinamike oljnega filma v le\u017eaju, zato jih ni mogo\u010de izravnati \u2013 destabilizirajo\u010da energija izvira iz maziva, ne iz neenakomerne porazdelitve mase. Potek je naslednji:<\/p>\n<ol>\n<li><strong>Oblikovanje oljnega klina:<\/strong> vrte\u010di se gred razporedi mazivo po le\u017eaju in tako ustvari tla\u010dno klino.<\/li>\n<li><strong>Tangencialna sila:<\/strong> ta klin pritiska na \u010dep v smeri, ki je pravokotna na radialni odmik \u2013 gre za pre\u010dno delujo\u010do tangencialno silo.<\/li>\n<li><strong>Gibanje po orbiti:<\/strong> tangencialna sila potiska sredi\u0161\u010de gredi proti <a href=\"https:\/\/vibromera.eu\/sl\/glossary\/whirl\/\">vrtin\u010denje<\/a> v <a href=\"https:\/\/vibromera.eu\/sl\/glossary\/orbit\/\">orbita<\/a> pri pribli\u017eno polovici hitrosti gredi.<\/li>\n<li><strong>Pridobivanje energije:<\/strong> vrtilni gib \u010drpa energijo iz vrtenja gredi, da se ohranja \u2013 to je zna\u010dilnost samovzbujajo\u010dega se nihanja.<\/li>\n<li><strong>Resonan\u010dna blokada:<\/strong> ko se frekvenca gibanja ujema z lastno frekvenco, resonanca okrepi gibanje.<\/li>\n<li><strong>Omejitveni cikel:<\/strong> amplituda nara\u0161\u010da, dokler je ne omeji le\u017eajni vmesnik ali pa pride do okvare.<\/li>\n<\/ol>\n<p>Ker je vzbujevalna sila odvisna od lastnosti maziva, vse, kar pove\u010da togost oljnega filma ali sistema <a href=\"https:\/\/vibromera.eu\/sl\/glossary\/damping\/\">du\u0161enje<\/a> pove\u010da hitrost, pri kateri se pojavi nestabilnost.<\/p>\n<h2>3. Diagnosti\u010dna identifikacija<\/h2>\n<p>Udarjanje gredi v podatkih o vibracijah pusti nezamenljiv odtis, kar omogo\u010da zgodnje prepoznavanje, \u010de se pregledajo ustrezni grafi.<\/p>\n<h3>Vibracijski podpis<\/h3>\n<ul>\n<li><strong><a href=\"https:\/\/vibromera.eu\/sl\/glossary\/spectrum\/\">Spekter<\/a>:<\/strong> velik vrh pri podsinhroni frekvenci (prvi lastni frekvenci), ki ostane na istem mestu ne glede na spremembe hitrosti.<\/li>\n<li><strong><a href=\"https:\/\/vibromera.eu\/sl\/glossary\/waterfall-plot\/\">Slapovni diagram<\/a>:<\/strong> podsinhrona komponenta se poka\u017ee kot navpi\u010dna \u010drta (konstantna frekvenca) in ne kot po\u0161evna \u010drta komponente, sorazmerne s hitrostjo.<\/li>\n<li><strong><a href=\"https:\/\/vibromera.eu\/sl\/glossary\/order-analysis\/\">Analiza redov<\/a>:<\/strong> delno naro\u010dilo, ki <em>zmanj\u0161uje<\/em> ko se hitrost pove\u010duje \u2013 na primer pri prehodu s 0,5\u00d7 na 0,4\u00d7 in nato na 0,35\u00d7 \u2013, saj se frekvenca med nara\u0161\u010danjem hitrosti ne spreminja.<\/li>\n<li><strong>Orbita:<\/strong> velika kro\u017ena ali elipti\u010dna orbita pri lastni frekvenci.<\/li>\n<\/ul>\n<p>A <a href=\"https:\/\/vibromera.eu\/sl\/glossary\/bode-plot\/\">Bodejeva krivulja<\/a> sprejeti na <a href=\"https:\/\/vibromera.eu\/sl\/glossary\/coastdown\/\">iztek<\/a> to \u0161e dodatno lo\u010di pravo resonanco od pojava \u00bbwhip\u00ab, saj se zaklenjena podsinhrona \u010drta obna\u0161a precej druga\u010de kot sinhroni vrh pri kriti\u010dni hitrosti.<\/p>\n<h3>Hitrost pojava<\/h3>\n<ul>\n<li><strong>Tipi\u010dna mejna vrednost:<\/strong> 2,0\u20132,5-kratnik prve kriti\u010dne hitrosti.<\/li>\n<li><strong>Odvisno od le\u017eaja:<\/strong> natan\u010dna mejna vrednost se razlikuje glede na konstrukcijo le\u017eaja, <a href=\"https:\/\/vibromera.eu\/sl\/glossary\/preload\/\">prednapetost<\/a>in viskoznost olja.<\/li>\n<li><strong>Nenaden za\u010detek:<\/strong> \u017ee majhno pove\u010danje hitrosti lahko povzro\u010di prehod rotorja iz stabilnega v popolnoma nestabilno stanje.<\/li>\n<\/ul>\n<h2>4. Strategije prepre\u010devanja<\/h2>\n<p>Ker pojava \u00bbwhip\u00ab ni mogo\u010de odpraviti z uravnote\u017eenjem, se prepre\u010devanje osredoto\u010da na <a href=\"https:\/\/vibromera.eu\/sl\/glossary\/journal-bearing\/\">drsni le\u017eaj<\/a> in o tem, kako se naprava upravlja.<\/p>\n<h3>Spremembe zasnove le\u017eajev<\/h3>\n<p><strong>1. Le\u017eaji z nagibnimi plo\u0161\u010dicami<\/strong> \u2014 naju\u010dinkovitej\u0161a re\u0161itev. Plo\u0161\u010dice se vrtijo neodvisno, s \u010dimer odpravijo destabilizirajo\u010do kri\u017eno sklopitveno silo; po naravi so stabilne v \u0161irokem obmo\u010dju hitrosti in so industrijski standard za visokohitrostne turbinske stroje.<\/p>\n<p><strong>2. Le\u017eaji s tla\u010dnim \u017eepom<\/strong> \u2014 prilagojeno valjasto le\u017eajno telo z utorom ali pregradno steno, ki pove\u010da u\u010dinkovito du\u0161enje in togost; cenej\u0161e od le\u017eaja z nagibno plo\u0161\u010dico, a manj u\u010dinkovito.<\/p>\n<p><strong>3. Prednapetost le\u017eaja<\/strong> \u2014 z uporabo radialne prednapetosti (pogosto prek zasnove z zamaknjenim izvrtinami) se pove\u010da togost in dvigne prag nestabilnosti.<\/p>\n<p><strong>4. <a href=\"https:\/\/vibromera.eu\/sl\/glossary\/squeeze-film-damper\/\">Du\u0161ilniki s stiskalnim filmom<\/a><\/strong> \u2014 zunanji bla\u017eilni element, ki obdaja le\u017eaj in zagotavlja bla\u017eenje brez potrebe po spremembi konstrukcije samega le\u017eaja, kar je \u0161e posebej primerno za naknadno vgradnjo.<\/p>\n<h3>Operativni ukrepi<\/h3>\n<ul>\n<li><strong>Omejitev hitrosti:<\/strong> naj najve\u010dja hitrost ne prese\u017ee mejne vrednosti \u2013 obi\u010dajno naj bo manj\u0161a od 1,8-kratnika prve kriti\u010dne vrednosti.<\/li>\n<li><strong>Upravljanje obremenitve:<\/strong> \u010de je mogo\u010de, delujte pri ve\u010djih obremenitvah le\u017eajev, saj ve\u010dja obremenitev pove\u010da du\u0161enje.<\/li>\n<li><strong>Nadzor temperature olja:<\/strong> hladnej\u0161e olje je bolj viskozno in ima bolj stabilizirajo\u010de lastnosti.<\/li>\n<li><strong>Spremljanje:<\/strong> neprekinjeno <a href=\"https:\/\/vibromera.eu\/sl\/glossary\/vibration-monitoring\/\">spremljanje vibracij<\/a> z alarmnimi sistemi, ki posebej spremljajo podsinhroni pas.<\/li>\n<\/ul>\n<h2>5. Posledice in \u0161koda<\/h2>\n<h3>Takoj\u0161nji u\u010dinki<\/h3>\n<ul>\n<li><strong>Mo\u010dno tresenje:<\/strong> amplitude lahko dose\u017eejo ve\u010d milimetrov (ve\u010d sto mil).<\/li>\n<li><strong>Hrup:<\/strong> glasen, zna\u010dilen zvok, ki se precej razlikuje od obi\u010dajnega delovanja.<\/li>\n<li><strong>Hitro segrevanje le\u017eaja:<\/strong> temperature lahko v nekaj minutah narastejo za 20\u201350 \u00b0C.<\/li>\n<li><strong>Razgradnja olja:<\/strong> visoka temperatura in mo\u010dno stri\u017eno delovanje razgradita mazivo.<\/li>\n<\/ul>\n<h3>Mo\u017ene napake<\/h3>\n<ul>\n<li><strong>Brisanje le\u017eaja:<\/strong> babbittova obloga se stopi in se odstrani.<\/li>\n<li><strong>Po\u0161kodbe gredi:<\/strong> vrezanje, odrgnine ali trajno upogibanje.<\/li>\n<li><strong><a href=\"https:\/\/vibromera.eu\/sl\/glossary\/seal-defects\/\">Okvara tesnila<\/a>:<\/strong> Prekomerno gibanje gredi po\u0161koduje tesnila.<\/li>\n<li><strong>Zlom gredi:<\/strong> Visokotaktni <a href=\"https:\/\/vibromera.eu\/sl\/glossary\/fatigue\/\">utrujenost<\/a> zaradi mo\u010dnega nihanja.<\/li>\n<li><strong><a href=\"https:\/\/vibromera.eu\/sl\/glossary\/coupling-defects\/\">Po\u0161kodbe sklopke<\/a>:<\/strong> prena\u0161ane sile po\u0161kodujejo sklopke.<\/li>\n<\/ul>\n<h2>6. Sorodni pojavi<\/h2>\n<h3>Oljni vrtinec<\/h3>\n<p><a href=\"https:\/\/vibromera.eu\/sl\/glossary\/oil-whirl\/\">Oljni vrtinec<\/a> je predhodnik pojava \u00bbwhip\u00ab: gre za isti mehanizem, vendar se frekvenca \u0161e ni uskladila z lastno frekvenco. Njena amplituda je manj\u0161a, frekvenca sledi hitrosti v razmerju ~0,43\u20130,48\u00d7, v nekaterih primerih pa je to sprejemljivo.<\/p>\n<h3>Parni vrtinec<\/h3>\n<p><a href=\"https:\/\/vibromera.eu\/sl\/glossary\/steam-whirl\/\">Parni vrtinec<\/a> podobna nestabilnost se pojavlja tudi v parnih turbinah, kjer jo povzro\u010dajo aerodinami\u010dne sile v labirintnih tesnilih in ne oljni film v le\u017eajih. Pri tem se pojavljajo enake podsinhrone vibracije, ki se uskladijo z lastno frekvenco.<\/p>\n<h3>Whip zaradi suhega trenja<\/h3>\n<p>Ta razli\u010dica se pojavi na mestih tesnjenja ali zaradi <a href=\"https:\/\/vibromera.eu\/sl\/glossary\/rotor-rub\/\">stik med rotorjem in statorjem<\/a>. Trenje predstavlja destabilizacijski mehanizem; pojavi se sicer redkeje kot oil whip, vendar je enako nevaren in zahteva druga\u010den ukrep \u2013 odpravo stika ali izbolj\u0161anje tesnjenja.<\/p>\n<h2>7. Primer iz prakse: Whip gredi kompresorja<\/h2>\n<p><strong>Scenarij:<\/strong> visokohitrostni centrifugalni kompresor na navadnih valj\u010dnih le\u017eajih.<\/p>\n<ul>\n<li><strong>Normalno delovanje:<\/strong> 12.000 vrtljajev na minuto pri vibracijah 2,5 mm\/s.<\/li>\n<li><strong>Pove\u010danje hitrosti:<\/strong> operater je za ve\u010djo zmogljivost pove\u010dal \u0161tevilo vrtljajev na 13.500 na minuto.<\/li>\n<li><strong>Za\u010detek:<\/strong> pri 13.200 vrtljajih na minuto se je pojavilo nenadno mo\u010dno tresenje.<\/li>\n<li><strong>Simptomi:<\/strong> 25 mm\/s pri stalnih 105 Hz; temperatura le\u017eaja se je v treh minutah dvignila s 70 \u00b0C na 95 \u00b0C.<\/li>\n<li><strong>Nujni ukrepi:<\/strong> Takoj\u0161nji izklop je prepre\u010dil okvaro le\u017eaja.<\/li>\n<li><strong>Osnovni vzrok:<\/strong> prva kriti\u010dna hitrost je bila 6,300 rpm (105 Hz); pri 13,200 rpm je rotor pre\u0161el prag bi\u010danja pribli\u017eno 2\u00d7 kriti\u010dne hitrosti \u2248 12,600 rpm, vibracija pa se je zaklenila na prvo lastno frekvenco 105 Hz.<\/li>\n<li><strong>Re\u0161itev:<\/strong> drsna le\u017eaja so bila zamenjana z le\u017eaji z nagibnimi plo\u0161\u010dicami, kar omogo\u010da varno delovanje do 15.000 vrtljajev na minuto.<\/li>\n<\/ul>\n<h2>8. Standardi, praksa in orodja za delo na terenu<\/h2>\n<ul>\n<li><strong><a href=\"https:\/\/vibromera.eu\/sl\/glossary\/api-684\/\">API 684<\/a>:<\/strong> zahteva analizo rotordinami\u010dne stabilnosti za visokohitrostne turbinske stroje.<\/li>\n<li><strong>API 617:<\/strong> dolo\u010da vrste le\u017eajev in zahteve glede stabilnosti za centrifugalne kompresorje.<\/li>\n<li><strong>ISO 10814:<\/strong> Zagotavlja smernice za izbiro le\u017eajev za stabilnost<\/li>\n<li><strong>Praksa v panogi:<\/strong> le\u017eaji z nagibno plo\u0161\u010dico so standardna oprema za naprave, ki delujejo pri hitrosti, ve\u010dji od dvakratne prve kriti\u010dne hitrosti.<\/li>\n<\/ul>\n<p>V praksi je vsakodnevni za\u0161\u010ditni ukrep, da se predhodni znak zazna, \u0161e preden rotor dose\u017ee pojav \u00bbwhip\u00ab. Prenosni dvokanalni analizator, kot je <a href=\"https:\/\/vibromera.eu\/sl\/izdelek\/balanset-1\/\">Balanset-1A<\/a> omogo\u010da in\u017eenirju, da zabele\u017ei amplitudo, <a href=\"https:\/\/vibromera.eu\/sl\/glossary\/phase\/\">faza<\/a> in spekter med nadzorovanim zagonom ter neposredno opazuje podsinhroni pas \u2013 \u010de se pri stabilnem 1\u00d7 signalu nenadoma pojavi zaklenjen, od hitrosti neodvisen vrh v bli\u017eini prve lastne frekvence, je rotor na robu pojava \u00bbwhip\u00ab in hitrost je treba zmanj\u0161ati. Isti instrument naknadno potrdi, da je osnovna neuravnote\u017eenost znotraj tolerance, s \u010dimer jo izklju\u010di kot vzbujevalni dejavnik. Pojav \u00bbshaft whip\u00ab ostaja katastrofalen na\u010din okvare, ki ga je najbolje obvladovati s pravilno izbiro in zasnovo le\u017eajev; prepoznavanje njegovega zna\u010dilnega podsinhronega, frekven\u010dno zaklenjenega signala omogo\u010da hitro diagnozo in odlo\u010den nujni odziv, ki \u0161\u010diti drago visokohitrostno opremo.<\/p>\n<hr>\n<p><a href=\"https:\/\/vibromera.eu\/sl\/glossary\/\">\u2190 Nazaj na glavno kazalo<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Spoznajte vibracije gredi, hudo samovzbudljivo vibracijsko nestabilnost v le\u017eajih s fluidnim filmom, ki se pojavlja pri visokih hitrostih in povzro\u010da silovite oscilacije z lastno frekvenco.<\/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\/sl\/wp-json\/wp\/v2\/glossary\/235","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vibromera.eu\/sl\/wp-json\/wp\/v2\/glossary"}],"about":[{"href":"https:\/\/vibromera.eu\/sl\/wp-json\/wp\/v2\/types\/glossary"}],"version-history":[{"count":2,"href":"https:\/\/vibromera.eu\/sl\/wp-json\/wp\/v2\/glossary\/235\/revisions"}],"predecessor-version":[{"id":102183,"href":"https:\/\/vibromera.eu\/sl\/wp-json\/wp\/v2\/glossary\/235\/revisions\/102183"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/sl\/wp-json\/wp\/v2\/media?parent=235"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/sl\/wp-json\/wp\/v2\/categories?post=235"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/sl\/wp-json\/wp\/v2\/tags?post=235"}],"curies":[{"name":"delovni list","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}