{"id":234,"date":"2025-10-31T00:25:51","date_gmt":"2025-10-31T00:25:51","guid":{"rendered":"https:\/\/vibromera.eu\/glossary\/shaft-crack\/"},"modified":"2026-05-23T22:53:50","modified_gmt":"2026-05-23T22:53:50","slug":"shaft-crack","status":"publish","type":"glossary","link":"https:\/\/vibromera.eu\/sl\/glossary\/shaft-crack\/","title":{"rendered":"Kaj je razpoka gredi? Odkrivanje in diagnoza"},"content":{"rendered":"<h1>Razumevanje razpok 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\/234?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\/234?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\/234?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\/234?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\/234?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\/234?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\/234?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\/234?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\/234?add-to-cart=1852\" data-quantity=\"1\" data-product_id=\"1852\" data-product_sku=\"MS-1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Dodaj 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\/234?add-to-cart=1852\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_1852\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"1852\" data-product_sku=\"MS-1\" aria-label=\"Dodaj v ko\u0161arico: \u201cMagnetic Stand Insize-60-kgf\u201d\" rel=\"nofollow\" data-success_message=\"\u201cMagnetic Stand Insize-60-kgf\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_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\/234?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\/234?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\/234?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\/234?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>A <strong>razpoka gredi<\/strong> je zlom ali prekinitev v vrte\u010dem se gredi, ki nastane zaradi utrujenosti materiala, koncentracije napetosti ali materialne napake. Razpoke se skoraj vedno za\u010dnejo na povr\u0161ini in se \u0161irijo navznoter, pri \u010demer napredujejo pravokotno na smer najve\u010dje natezne napetosti. V vrte\u010dih strojih sodijo med najnevarnej\u0161e napake, saj se lahko razpoka v nekaj urah ali dneh razvije iz neopazne lasaste razpoke v popoln zlom gredi, kar lahko povzro\u010di katastrofalno okvaro, ki ogro\u017ea \u017eivljenje. Edina tola\u017eba je, da se razvijajo\u010da se razpoka izda v <a href=\"https:\/\/vibromera.eu\/sl\/glossary\/vibration\/\">vibracije<\/a> signal \u2014 najbolj zna\u010dilno prek nara\u0161\u010dajo\u010de komponente 2\u00d7 (dvakrat na obrat) \u2014 tako discipliniran <a href=\"https:\/\/vibromera.eu\/sl\/glossary\/vibration-analysis\/\">analiza vibracij<\/a> ponuja resni\u010dno prilo\u017enost, da ga ujame\u0161, preden ti uide.<\/p>\n<h2>1. Opredelitev: Kaj je razpoka v gredi?<\/h2>\n<p>Z mehanskega vidika je razpoka obmo\u010dje, kjer je gred izgubila svojo neprekinjenost in s tem tudi togost. Med vrtenjem gredi se razpoka pod vplivom nihajne upogibne napetosti izmeni\u010dno odpira in zapira, zaradi tega \u00bbdihanja\u00ab pa se togost gredi spreminja glede na kotni polo\u017eaj. Ta asimetrija je vzrok za diagnosti\u010dne zna\u010dilnosti, ki jih bomo obravnavali v nadaljevanju, in prav ona lo\u010duje pravo pre\u010dno razpoko od trajne <a href=\"https:\/\/vibromera.eu\/sl\/glossary\/shaft-bow\/\">gredni lok<\/a> ali preprosto <a href=\"https:\/\/vibromera.eu\/sl\/glossary\/unbalance\/\">neuravnote\u017eenost<\/a>. \u0160ir\u0161i pojav, ko se je razpoka raz\u0161irila do te mere, da spreminja delovanje celotnega rotorja, se v\u010dasih obravnava pod naslovom <a href=\"https:\/\/vibromera.eu\/sl\/glossary\/cracked-rotor\/\">razpokan rotor<\/a>.<\/p>\n<h2>2. Pogosti vzroki za razpoke na gredi<\/h2>\n<h3>Utrujenost zaradi cikli\u010dnih obremenitev<\/h3>\n<p>Glavni vzrok po\u0161kodb zaradi utrujenosti pri rotacijskih strojih je, da se po\u0161kodbe kopi\u010dijo z vsakim napetostnim ciklom:<\/p>\n<ul>\n<li><strong>Utrujenost zaradi upogibanja:<\/strong> vrte\u010di se gredi z neenakomerno togostjo ali izvenosnimi obremenitvami delujejo popolnoma nasprotne cikli\u010dne upogibne napetosti.<\/li>\n<li><strong>Utrudljivost zaradi torzije:<\/strong> nihajo\u010di navor v pogonskih gredih <a href=\"https:\/\/vibromera.eu\/sl\/glossary\/torsional-vibration\/\">torzijske vibracije<\/a> in utrujenost.<\/li>\n<li><strong>Utrujenost zaradi velikega \u0161tevila ciklov:<\/strong> V letih se naberejo milijoni ciklov, zato lahko s\u010dasoma tudi majhne obremenitve povzro\u010dijo nastanek razpoke.<\/li>\n<li><strong>Koncentracija napetosti:<\/strong> utori za klju\u010d, pre\u010dne luknje, zaobljenja in druge geometrijske neenakomernosti lokalno pove\u010dajo napetost in so obi\u010dajna mesta nastanka po\u0161kodb.<\/li>\n<\/ul>\n<h3>Delovni pogoji<\/h3>\n<ul>\n<li><strong>Preveliko neravnovesje:<\/strong> visoka centrifugalna sila povzro\u010da cikli\u010dno upogibno napetost.<\/li>\n<li><strong>Neusklajenost:<\/strong> upogibni momenti iz <a href=\"https:\/\/vibromera.eu\/sl\/glossary\/misalignment\/\">neporavnanost gredi<\/a> pospe\u0161ijo utrujenost.<\/li>\n<li><strong>Delovanje na principu resonance:<\/strong> te\u010de pri ali blizu <a href=\"https:\/\/vibromera.eu\/sl\/glossary\/critical-speed\/\">kriti\u010dna hitrost<\/a> povzro\u010da velike deformacije in napetosti.<\/li>\n<li><strong>Preobremenitev:<\/strong> delovanje zunaj predvidenih omejitev.<\/li>\n<li><strong>Toplotni stres:<\/strong> hitro segrevanje ali ohlajanje ter strmi temperaturni gradienti, ki lahko povzro\u010dijo tudi prehodno stanje <a href=\"https:\/\/vibromera.eu\/sl\/glossary\/thermal-bow\/\">termi\u010dni lok<\/a>.<\/li>\n<\/ul>\n<h3>Materialne in proizvodne napake<\/h3>\n<ul>\n<li><strong>Vsebovane snovi:<\/strong> \u017elindra, praznine ali tuje snovi v materialu gredi.<\/li>\n<li><strong>Nepravilna toplotna obdelava:<\/strong> nezadostno kaljenje ali popu\u0161\u010danje.<\/li>\n<li><strong>Napake pri obdelavi:<\/strong> sledovi orodja, zareze ali praske, ki delujejo kot to\u010dke pove\u010dane napetosti.<\/li>\n<li><strong>Korozijske luknjice:<\/strong> vdolbine na povr\u0161ini, ki delujejo kot mesta nastanka razpok.<\/li>\n<li><strong>Strganje:<\/strong> na vtisknih stikih ali v utorih za klju\u010de, kjer mikro premiki po\u0161kodujejo povr\u0161ino.<\/li>\n<\/ul>\n<h3>Operativni dogodki<\/h3>\n<ul>\n<li><strong>Primeri prekora\u010ditve hitrosti:<\/strong> izredne razmere ali nenamerno prekora\u010ditev hitrosti, ki povzro\u010dajo velike obremenitve.<\/li>\n<li><strong>Hudo drgnjenje:<\/strong> <a href=\"https:\/\/vibromera.eu\/sl\/glossary\/rotor-rub\/\">drgnjenje rotorja<\/a> Kontakt, ki ustvarja toploto in lokalno koncentracijo napetosti<\/li>\n<li><strong>Udarno obremenjevanje:<\/strong> Nenadne obremenitve zaradi procesnih motenj ali mehanskih udarcev<\/li>\n<li><strong>Prej\u0161nja popravila:<\/strong> varjenje ali obdelava, ki povzro\u010da nastanek ostankovnih napetosti.<\/li>\n<\/ul>\n<h2>3. Simptomi vibracij pri po\u0161kodovanem gredi<\/h2>\n<h3>Zna\u010dilna 2\u00d7 komponenta<\/h3>\n<p>Zna\u010dilni znak pre\u010dne razpoke v gredi je izrazita <strong>2\u00d7 (druga harmonika)<\/strong> komponenta, pri \u010demer je vredno natan\u010dno razumeti njen delovni mehanizem:<\/p>\n<ul>\n<li>Ko se gred vrti, se re\u017ea dvakrat na obrat odpre in zapre.<\/li>\n<li>Ko je razpoka na strani, ki je pod pritiskom (spodaj v smeri vrtenja), se zapre in gred postane trdnej\u0161a.<\/li>\n<li>Ko se nagne na stran napetosti (v zgornjem polo\u017eaju rotacije), se odpre in gred postane pro\u017enej\u0161a.<\/li>\n<li>Ta nihanje togosti, ki se pojavi dvakrat na en obrat, je samo po sebi 2\u00d7-kratna vzbujevalna funkcija.<\/li>\n<li>Amplituda 2\u00d7 se pove\u010duje s poglabljanjem razpoke in nara\u0161\u010danjem asimetrije togosti \u2014 zato je <em>trend<\/em> je enako pomembno kot absolutna raven.<\/li>\n<\/ul>\n<h3>Dodatni indikatorji vibracij<\/h3>\n<ul>\n<li><strong>1\u00d7 spremembe:<\/strong> postopno pove\u010danje komponente 1\u00d7, ko se spreminja togost in nastaja preostali upogib.<\/li>\n<li><strong>Vi\u0161ji harmoniki:<\/strong> S pove\u010danjem resnosti se lahko pojavijo 3\u00d7 in 4\u00d7.<\/li>\n<li><strong>Fazni premiki:<\/strong> . <a href=\"https:\/\/vibromera.eu\/sl\/glossary\/phase\/\">faza<\/a> spremembe kota med zagonom ali zaviranjem ter pri razli\u010dnih hitrostih.<\/li>\n<li><strong>Odvisnost od hitrosti:<\/strong> Vibracije se lahko spreminjajo nelinearno glede na hitrost.<\/li>\n<li><strong>Temperaturna ob\u010dutljivost:<\/strong> meritve lahko spremljajo toplotno raztezanje, ko se razpoka odpira ali zapira.<\/li>\n<\/ul>\n<h3>Zagon in zaviranje<\/h3>\n<ul>\n<li>Komponenta 2\u00d7 se med prehodnimi pojavi obna\u0161a nenavadno.<\/li>\n<li>A <a href=\"https:\/\/vibromera.eu\/sl\/glossary\/bode-plot\/\">Bodejeva krivulja<\/a> lahko prika\u017ee dva resonan\u010dna vrha, vsak pri polovici kriti\u010dne hitrosti, ko se 2\u00d7 vzbujanje premika po obmo\u010dju.<\/li>\n<li>Fazni potek komponente 1\u00d7 se lahko znatno razlikuje od obi\u010dajnega odziva na neuravnote\u017eenost.<\/li>\n<\/ul>\n<h2>4. Metode odkrivanja<\/h2>\n<h3>Spremljanje vibracij in merjenje na terenu<\/h3>\n<p>Ker je to opozorilo neopazno in se postopoma stopnjuje, so redna merjenja prva obrambna linija:<\/p>\n<ul>\n<li><strong>Trendi:<\/strong> spremljajte razmerje 2\u00d7\/1\u00d7 skozi \u010das; postopno nara\u0161\u010danje je opozorilo, razmerje nad pribli\u017eno 0,5 pa zahteva podrobnej\u0161o preiskavo. Enako sumljive so tudi nenadne spremembe vzorca.<\/li>\n<li><strong>Spektralna analiza:<\/strong> rutinski <a href=\"https:\/\/vibromera.eu\/sl\/glossary\/fft\/\">Hitra pretvorba (FFT)<\/a> meritve, primerjane z zgodovinskimi <a href=\"https:\/\/vibromera.eu\/sl\/glossary\/baseline\/\">izhodi\u0161\u010dna vrednost<\/a>, poka\u017eejo pojav ali pove\u010danje 2\u00d7 vrha.<\/li>\n<li><strong>Analiza prehodnih pojavov:<\/strong> <a href=\"https:\/\/vibromera.eu\/sl\/glossary\/waterfall-plot\/\">slapni diagrami<\/a> in Bodejevi diagrami od zagona do upo\u010dasnitve ka\u017eejo nenavadno obna\u0161anje pri prehodih skozi kriti\u010dno hitrost.<\/li>\n<\/ul>\n<p>Merjenje amplitude in faze 1\u00d7- in 2\u00d7-komponent je prav tista naloga, ki jo prenosni dvo-kanalni analizator spremeni v rutinsko opravilo. Z instrumentom s faznim referen\u010dnim sistemom, kot je <a href=\"https:\/\/vibromera.eu\/sl\/izdelek\/balanset-1\/\">Balanset-1A<\/a>, lahko tehnik med normalnim delovanjem in ob vsakem izteku zapi\u0161e vektorja 1\u00d7 in 2\u00d7 na le\u017eajih ter tako ustvari trend, ki razlikuje ne\u0161kodljiv vektor 2\u00d7 od tistega, ki se vzpenja \u2013 to je razlika med na\u010drtovanim zaustavitvijo in nena\u010drtovano okvaro.<\/p>\n<h3>Metode brez vibracij<\/h3>\n<p>Sumljiv trend nihanja je treba vedno potrditi z neposrednim <a href=\"https:\/\/vibromera.eu\/sl\/glossary\/non-destructive-testing\/\">nedestruktivno testiranje<\/a>:<\/p>\n<ul>\n<li><strong>Preizku\u0161anje z magnetnimi delci (MPI):<\/strong> z visoko zanesljivostjo odkriva povr\u0161inske in podpovr\u0161inske razpoke na dostopnih feromagnetnih gredih; nepogre\u0161ljiv del rednih pregledov med izklopom.<\/li>\n<li><strong>Ultrazvo\u010dno presku\u0161anje (UT):<\/strong> odkriva notranje in povr\u0161inske razpoke ter jih lahko zazna \u0161e preden se pojavijo kakr\u0161ni koli znaki vibracij; zahteva specializirano opremo in usposobljeno osebje ter je najprimernej\u0161a metoda za kriti\u010dne gredi.<\/li>\n<li><strong>Preizku\u0161anje s penetrantom:<\/strong> preprosta metoda za odpravljanje povr\u0161inskih razpok, ki zahteva \u010di\u0161\u010denje in pripravo povr\u0161ine ter je primerna za dostopna obmo\u010dja med izpadom.<\/li>\n<li><strong>Preizku\u0161anje z vrtin\u010dnimi tokovi:<\/strong> brezkontaktno odkrivanje povr\u0161inskih razpok, ki je primerno za avtomatizirano pregledovanje in deluje tako na magnetnih kot na nemagnetnih materialih.<\/li>\n<\/ul>\n<h2>5. Odziv in popravni ukrepi<\/h2>\n<h3>Takoj\u0161nji ukrepi ob odkritju<\/h3>\n<ol>\n<li><strong>Pove\u010dajte pogostost spremljanja:<\/strong> preiti z mese\u010dnega na tedenski ali dnevni ritem.<\/li>\n<li><strong>Zmanj\u0161ajte resnost delovanja:<\/strong> \u010de je mogo\u010de, zmanj\u0161ajte hitrost ali obremenitev.<\/li>\n<li><strong>Na\u010drtujte zaustavitev:<\/strong> Popravilo ali zamenjavo na\u010drtujte \u010dim prej, ko je to mogo\u010de.<\/li>\n<li><strong>Izvedite NDE:<\/strong> neposredno potrditi obstoj razpoke in oceniti njeno resnost.<\/li>\n<li><strong>Ocena tveganja:<\/strong> uradno odlo\u010diti, ali je nadaljnje delovanje varno.<\/li>\n<\/ol>\n<h3>Dolgoro\u010dne re\u0161itve<\/h3>\n<ul>\n<li><strong>Zamenjava gredi:<\/strong> najbolj zanesljivo sredstvo za popravilo potrjene razpoke.<\/li>\n<li><strong>Popravilo (v omejenih primerih):<\/strong> Nekatere razpoke je mogo\u010de odstraniti s strojnim obdelovanjem in nato zapolniti z varjenjem, vendar \u0161ele po strokovni oceni.<\/li>\n<li><strong>Analiza vzrokov:<\/strong> ugotoviti, zakaj je pri\u0161lo do razpoke, da se ta ne bi ponovila.<\/li>\n<li><strong>Spremembe v zasnovi:<\/strong> zmanj\u0161ati koncentracije napetosti, izbolj\u0161ati izbiro materiala ali spremeniti na\u010din delovanja.<\/li>\n<\/ul>\n<h2>6. Strategije prepre\u010devanja<\/h2>\n<h3>Faza na\u010drtovanja<\/h3>\n<ul>\n<li>Odstranite ostre robove in mesta koncentracije napetosti.<\/li>\n<li>Pri spremembah premera uporabite velike zaobljene prehode.<\/li>\n<li>Izberite materiale, ki so primerni za stopnjo obremenitve in okolje.<\/li>\n<li>Opravite analizo napetosti s kon\u010dnimi elementi na kriti\u010dnih geometrijskih elementih.<\/li>\n<li>Za pove\u010danje odpornosti proti utrujenosti uporabite povr\u0161inske obdelave, kot sta kroglicno kovanje ali nitriranje.<\/li>\n<\/ul>\n<h3>Operativna faza<\/h3>\n<ul>\n<li>Ohranite dobro <a href=\"https:\/\/vibromera.eu\/sl\/glossary\/balance-quality\/\">kakovost uravnote\u017eenja<\/a> za zmanj\u0161anje cikli\u010dne upogibne napetosti.<\/li>\n<li>Poskrbite za natan\u010dno poravnavo.<\/li>\n<li>Izogibajte se dalj\u0161em delovanju pri kriti\u010dnih hitrostih.<\/li>\n<li>Prepre\u010dite primere prekora\u010ditve hitrosti.<\/li>\n<li>Z ustreznimi postopki ogrevanja in ohlajanja nadzorujte toplotno obremenitev.<\/li>\n<\/ul>\n<h3>Faza vzdr\u017eevanja<\/h3>\n<ul>\n<li>Redno pregledujte z uporabo ustreznih metod neporu\u0161itvenega presku\u0161anja.<\/li>\n<li>Izvedite analizo vibracij <a href=\"https:\/\/vibromera.eu\/sl\/glossary\/trending\/\">trendi<\/a> program za zgodnje odkrivanje simptomov.<\/li>\n<li>Redno ponovno uravnote\u017eite, da se zmanj\u0161a utrujenost \u2014 na kraju samem <a href=\"https:\/\/vibromera.eu\/sl\/glossary\/izravnava-polja\/\">uravnote\u017eenje na terenu<\/a> omogo\u010da to prakti\u010dno re\u0161itev brez odstranjevanja rotorja.<\/li>\n<li>Skrbite za za\u0161\u010dito pred korozijo in za premaze.<\/li>\n<\/ul>\n<p>Razpoke na gredi so eden najresnej\u0161ih na\u010dinov okvare pri rotacijskih strojih, kjer se posledice spregledane okvare merijo v uni\u010denem premo\u017eenju in ogro\u017eenih ljudeh. U\u010dinkovita je prav kombinacija obeh ukrepov: spremljanje vibracij za zgodnje odkrivanje zna\u010dilnega vzorca 2\u00d7 ter redni neporu\u0161itveni pregledi za potrditev in oceno obsega tistega, kar vibracije le nakazujejo. Skupaj omogo\u010data na\u010drtovano in nadzorovano vzdr\u017eevanje \u2013 ter prepre\u010dita, da bi se neopazna lasasta razpoka spremenila v nenadno in silovito zlom.<\/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 razpoke gredi v vrte\u010dih se strojih, njihove vzroke, zna\u010dilne vibracijske podpise, vklju\u010dno s komponentami 2X, in kriti\u010dne metode odkrivanja za prepre\u010devanje katastrofalnih okvar.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"ai_generated_summary":"","footnotes":""},"categories":[109,110],"tags":[],"class_list":["post-234","glossary","type-glossary","status-publish","hentry","category-glossary","category-vibration-diagnostics"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/sl\/wp-json\/wp\/v2\/glossary\/234","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":1,"href":"https:\/\/vibromera.eu\/sl\/wp-json\/wp\/v2\/glossary\/234\/revisions"}],"predecessor-version":[{"id":101407,"href":"https:\/\/vibromera.eu\/sl\/wp-json\/wp\/v2\/glossary\/234\/revisions\/101407"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/sl\/wp-json\/wp\/v2\/media?parent=234"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/sl\/wp-json\/wp\/v2\/categories?post=234"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/sl\/wp-json\/wp\/v2\/tags?post=234"}],"curies":[{"name":"delovni list","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}