{"id":232,"date":"2025-10-31T00:25:51","date_gmt":"2025-10-31T00:25:51","guid":{"rendered":"https:\/\/vibromera.eu\/glossary\/shaft-bow\/"},"modified":"2026-05-23T23:06:20","modified_gmt":"2026-05-23T23:06:20","slug":"shaft-bow","status":"publish","type":"glossary","link":"https:\/\/vibromera.eu\/hr\/glossary\/shaft-bow\/","title":{"rendered":"\u0160to je savijanje osovine? Uzroci, otkrivanje i ispravljanje"},"content":{"rendered":"<h1>Razumijevanje progiba osovine u rotiraju\u0107im strojevima<\/h1>\n\t\t<section class=\"woocommerce hestia-shop products is-shortcode\" id=\"products\" data-sorder=\"hestia_shop\" >\n\t\t\t\t\t\t<div class=\"\">\n\t\t\t\t\t\t<div class=\"hestia-shop-content\">\n\t\t\t<div class=\"row\" data-aos=\"fade-up\" >\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/hr\/product\/balanset-1\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/hr\/product\/balanset-1\/\" title=\"Prijenosni balanser &amp; analizator vibracija Balanset-1A\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Balanset-1A kompletan set prijenosnog balansera i analizatora vibracija\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-18x12.webp 18w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-272x182.webp 272w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/hr\/product-category\/devices\/\" rel=\"tag\">ure\u0111aji<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/hr\/product\/balanset-1\/\" title=\"Prijenosni balanser &amp; analizator vibracija Balanset-1A\">Portable balancer &amp; Vibration analyzer Balanset-1A<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>1,975.00<\/span> + PDV (ako je primjenjivo)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/hr\/wp-json\/wp\/v2\/glossary\/232?add-to-cart=986\" data-quantity=\"1\" data-product_id=\"986\" data-product_sku=\"BS-1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Dodaj u ko\u0161aricu\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Dodaj u ko\u0161aricu\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/hr\/wp-json\/wp\/v2\/glossary\/232?add-to-cart=986\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_986\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"986\" data-product_sku=\"BS-1\" aria-label=\"Dodaj u ko\u0161aricu: \u201cPortable balancer &amp; Vibration analyzer Balanset-1A\u201d\" rel=\"nofollow\" data-success_message=\"&quot;Portable balancer &amp; Vibration analyzer Balanset-1A&quot; je dodan u va\u0161u ko\u0161aricu\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Dodaj u ko\u0161aricu<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_986\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/hr\/product\/vibration-sensor\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/hr\/product\/vibration-sensor\/\" title=\"senzor vibracija\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Detalj senzora vibracija Balanset-1A\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-300x200.webp 300w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-768x512.webp 768w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-1024x682.webp 1024w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-272x182.webp 272w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3.webp 1280w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/hr\/product-category\/parts\/\" rel=\"tag\">dijelovi<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/hr\/product\/vibration-sensor\/\" title=\"senzor vibracija\">senzor vibracija<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>90.00<\/span> + PDV (ako je primjenjivo)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/hr\/wp-json\/wp\/v2\/glossary\/232?add-to-cart=1820\" data-quantity=\"1\" data-product_id=\"1820\" data-product_sku=\"VS-1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Dodaj u ko\u0161aricu\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Dodaj u ko\u0161aricu\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/hr\/wp-json\/wp\/v2\/glossary\/232?add-to-cart=1820\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_1820\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"1820\" data-product_sku=\"VS-1\" aria-label=\"Dodaj u ko\u0161aricu: \u201cVibration sensor\u201d\" rel=\"nofollow\" data-success_message=\"&quot;Vibration sensor&quot; je dodan u va\u0161u ko\u0161aricu\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Dodaj u ko\u0161aricu<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_1820\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/hr\/product\/optical-sensor-for-balanset-and-arbalance\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/hr\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Opti\u010dki senzor (laserski tahometar)\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Opti\u010dki senzor (laserski tahometar)\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-300x200.webp 300w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-1024x682.webp 1024w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-768x512.webp 768w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-1536x1023.webp 1536w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-18x12.webp 18w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-460x306.webp 460w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-272x182.webp 272w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU.webp 1600w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/hr\/product-category\/parts\/\" rel=\"tag\">dijelovi<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/hr\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Opti\u010dki senzor (laserski tahometar)\">Opti\u010dki senzor (laserski tahometar)<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>124.00<\/span> + PDV (ako je primjenjivo)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/hr\/wp-json\/wp\/v2\/glossary\/232?add-to-cart=1832\" data-quantity=\"1\" data-product_id=\"1832\" data-product_sku=\"Tach-1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Dodaj u ko\u0161aricu\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Dodaj u ko\u0161aricu\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/hr\/wp-json\/wp\/v2\/glossary\/232?add-to-cart=1832\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_1832\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"1832\" data-product_sku=\"Tach-1\" aria-label=\"Dodaj u ko\u0161aricu: \u201cOptical Sensor (Laser Tachometer)\u201d\" rel=\"nofollow\" data-success_message=\"&quot;Optical Sensor (Laser Tachometer)&quot; je dodan u va\u0161u ko\u0161aricu\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Dodaj u ko\u0161aricu<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_1832\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/hr\/product\/balanset-4\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/hr\/product\/balanset-4\/\" title=\"Balanset-4\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Vibromera komplet za balansiranje rotora: torba za no\u0161enje, vi\u0161ekanalni pretvara\u010d signala, ru\u010dni analizator, magnetska baza, senzori vibracija i spiralni kabeli.\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-300x200.webp 300w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-18x12.webp 18w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-460x306.webp 460w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-272x182.webp 272w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4.webp 640w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/hr\/product-category\/devices\/\" rel=\"tag\">ure\u0111aji<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/hr\/product\/balanset-4\/\" title=\"Balanset-4\">Balanset-4<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>6,803.00<\/span> + PDV (ako je primjenjivo)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/hr\/wp-json\/wp\/v2\/glossary\/232?add-to-cart=1833\" data-quantity=\"1\" data-product_id=\"1833\" data-product_sku=\"BS-4\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Dodaj u ko\u0161aricu\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Dodaj u ko\u0161aricu\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/hr\/wp-json\/wp\/v2\/glossary\/232?add-to-cart=1833\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_1833\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"1833\" data-product_sku=\"BS-4\" aria-label=\"Dodaj u ko\u0161aricu: \u201cBalanset-4\u201d\" rel=\"nofollow\" data-success_message=\"&quot;Balanset-4&quot; je dodan u va\u0161u ko\u0161aricu\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Dodaj u ko\u0161aricu<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_1833\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div><!-- \/.row --><div class=\"row\">\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/hr\/product\/magnet-stand\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/hr\/product\/magnet-stand\/\" title=\"Magnetski stalak Insize nosivosti 60 kgf\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Magnetska baza.\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-300x200.webp 300w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-1024x682.webp 1024w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-768x512.webp 768w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-272x182.webp 272w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36.webp 1280w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/hr\/product-category\/parts\/\" rel=\"tag\">dijelovi<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/hr\/product\/magnet-stand\/\" title=\"Magnetski stalak Insize nosivosti 60 kgf\">Magnetski stalak Insize nosivosti 60 kgf<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>46.00<\/span> + PDV (ako je primjenjivo)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/hr\/wp-json\/wp\/v2\/glossary\/232?add-to-cart=1852\" data-quantity=\"1\" data-product_id=\"1852\" data-product_sku=\"MS-1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Dodaj u ko\u0161aricu\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Dodaj u ko\u0161aricu\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/hr\/wp-json\/wp\/v2\/glossary\/232?add-to-cart=1852\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_1852\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"1852\" data-product_sku=\"MS-1\" aria-label=\"Dodaj u ko\u0161aricu: \u201cMagnetic Stand Insize-60-kgf\u201d\" rel=\"nofollow\" data-success_message=\"&quot;Magnetic Stand Insize-60-kgf&quot; je dodan u va\u0161u ko\u0161aricu\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Dodaj u ko\u0161aricu<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_1852\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/hr\/product\/reflective-tape\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/hr\/product\/reflective-tape\/\" title=\"Reflektiraju\u0107a traka\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Reflektiraju\u0107a traka\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-16x12.webp 16w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-460x306.webp 460w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-272x182.webp 272w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/hr\/product-category\/parts\/\" rel=\"tag\">dijelovi<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/hr\/product\/reflective-tape\/\" title=\"Reflektiraju\u0107a traka\">Reflektiraju\u0107a traka<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>10.00<\/span> + PDV (ako je primjenjivo)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/hr\/wp-json\/wp\/v2\/glossary\/232?add-to-cart=2329\" data-quantity=\"1\" data-product_id=\"2329\" data-product_sku=\"rt-1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Dodaj u ko\u0161aricu\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Dodaj u ko\u0161aricu\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/hr\/wp-json\/wp\/v2\/glossary\/232?add-to-cart=2329\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_2329\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"2329\" data-product_sku=\"rt-1\" aria-label=\"Dodaj u ko\u0161aricu: \u201cReflective tape\u201d\" rel=\"nofollow\" data-success_message=\"&quot;Reflective tape&quot; je dodan u va\u0161u ko\u0161aricu\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Dodaj u ko\u0161aricu<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_2329\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/hr\/product\/dynamic-balancer-balanset-1a\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/hr\/product\/dynamic-balancer-balanset-1a\/\" title=\"Dinami\u010dki balanser \u201cBalanset-1A\u201d OEM\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Sadr\u017eaj kompleta Balanset-1A s jedinicom za su\u010delje, senzorima, tahometrom i dodacima\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-300x200.webp 300w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-1024x683.webp 1024w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-768x512.webp 768w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-1536x1024.webp 1536w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-2048x1366.webp 2048w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-272x182.webp 272w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-e1732998877834.webp 708w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/hr\/product-category\/devices\/\" rel=\"tag\">ure\u0111aji<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/hr\/product\/dynamic-balancer-balanset-1a\/\" title=\"Dinami\u010dki balanser \u201cBalanset-1A\u201d OEM\">Dinami\u010dki balanser \u201cBalanset-1A\u201d OEM<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>1,735.00<\/span> + PDV (ako je primjenjivo)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/hr\/wp-json\/wp\/v2\/glossary\/232?add-to-cart=4193\" data-quantity=\"1\" data-product_id=\"4193\" data-product_sku=\"BS-1OEM\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Dodaj u ko\u0161aricu\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Dodaj u ko\u0161aricu\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/hr\/wp-json\/wp\/v2\/glossary\/232?add-to-cart=4193\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_4193\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"4193\" data-product_sku=\"BS-1OEM\" aria-label=\"Dodaj u ko\u0161aricu: \u201cDynamic balancer \u201cBalanset-1A\u201d OEM\u201d\" rel=\"nofollow\" data-success_message=\"&quot;Dynamic balancer \u201cBalanset-1A\u201d OEM&quot; je dodan u va\u0161u ko\u0161aricu\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Dodaj u ko\u0161aricu<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_4193\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/section>\n\t\t\n<p><strong>Progib osovine<\/strong> (tako\u0111er se naziva savijanje osovine, luk rotora ili jednostavno \u201cluk\u201d) je stanje u kojem se <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/rotor\/\">rotor<\/a> osovina je poprimila trajnu ili polutrajnu zakrivljenost, zbog \u010dega se njezina geometrijska osovinska linija odmi\u010de od ravne linije izme\u0111u le\u017eajnih \u010da\u0161ica. Za razliku od privremene <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/run-out\/\">radijalno odstupanje<\/a> Uzrokovana labavom komponentom ili ekscentri\u010dnim montiranjem, savijanje osovine predstavlja stvarnu deformaciju samog materijala osovine. To proizvodi <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/vibration\/\">vibracija<\/a> simptomi koji povr\u0161no nalikuju <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/unbalance\/\">neravnote\u017ea<\/a> \u2014 sna\u017eno, sinkrono kretanje jednom po rotaciji \u2014 ipak se ne mo\u017ee izlije\u010diti konvencionalnim <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/balancing\/\">balansiranje<\/a>. Rano prepoznavanje te razlike je ono \u0161to razlikuje brzu popravku od dana besplodnog balansiranja na osovini koja nikada ne bi reagirala.<\/p>\n<h2>1. Definicija: \u0160to je zapravo Shaft Bow<\/h2>\n<p>Potpuno zdrav rotor ima os masu i geometrijsku os koje su obje ravne i gotovo podudarne. Savijanje osovine naru\u0161ava tu sliku tako \u0161to geometrijsku os savija u luk. Savijanje mo\u017ee biti malo \u2014 nekoliko stotinki milimetra dovoljno je da bude zna\u010dajno na visokobrzinskoj ma\u0161ini \u2014 ali budu\u0107i da savijena osovina vi\u0161e ne prolazi kroz centre le\u017eajeva, rotor je prisiljen vrtjeti se oko linije oko koje prirodno ne \u017eeli rotirati.<\/p>\n<p>Vrijedi odvojiti luk od njegovih bliskih ro\u0111aka. A <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/bent-shaft\/\">iskrivljeni vrat<\/a> je u su\u0161tini ista gre\u0161ka opisana s mehani\u010dke strane, dok <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/eccentricity\/\">ekscentri\u010dnost<\/a> Opisuje rotor \u010dije je te\u017ei\u0161te pomaknuto, a da sam vrat nije savijen. Istina <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/run-out\/\">radijalno odstupanje<\/a> mo\u017ee biti mehani\u010dko (pravo geometrijsko odstupanje) ili elektri\u010dno (pogre\u0161no o\u010ditanje s <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/proximity-probe\/\">sonda za blizinu<\/a> (primje\u0107uju\u0107i materijalnu ili magnetsku varijaciju). Savijanje osovine je posebna geometrijska deformacija tijela osovine, i zato nijedna koli\u010dina dodane mase drugdje ne mo\u017ee istinski \u201cizbalansirati\u201d osovinu.\u201d<\/p>\n<h2>2. Vrste lukova na vratilima<\/h2>\n<p>Savijanje osovine najbolje je klasificirati prema uzroku i trajanju, jer svaki tip zahtijeva druga\u010diji odgovor.<\/p>\n<h3>2.1 Permanentni mehani\u010dki luk<\/h3>\n<p>Ovo je plasti\u010dna (trajna) deformacija materijala osovine \u2014 metal je popustio i ne\u0107e se vratiti u prvobitni oblik. Uobi\u010dajeni uzroci uklju\u010duju:<\/p>\n<ul>\n<li>Mehani\u010dko preoptere\u0107enje ili udar<\/li>\n<li>Nepravilno podizanje ili rukovanje tijekom odr\u017eavanja<\/li>\n<li>Spu\u0161tanje rotora<\/li>\n<li>Prekomjerno naprezanje savijanja tijekom rada<\/li>\n<li>Proizvodni nedostaci ili nepravilna toplinska obrada<\/li>\n<\/ul>\n<p>Kad se osovina popusti, savijanje ostaje i kad je osovina u mirovanju i kad je svaki vanjski teret uklonjen. Ovo je znak koji razlikuje trajno savijanje od termi\u010dkog: prisutno je kad je hladno i prisutno je na klupi.<\/p>\n<h3>2.2 Termi\u010dni luk (privremeni)<\/h3>\n<p>Tako\u0111er se naziva <strong>toplinsko savijanje vratila<\/strong> ili <strong>vru\u0107i progib<\/strong>, ovo je privremeno stanje uzrokovano neujedna\u010denim zagrijavanjem oko obujma osovine. Topla strana se \u0161iri vi\u0161e od hladne strane, prisiljavaju\u0107i osovinu da se savije s toplom stranom na konveksnoj (vanjskoj) strani. Tipi\u010dni okida\u010di su:<\/p>\n<ul>\n<li>Asimetri\u010dni izvori topline (vru\u0107i procesni fluid s jedne strane, rashladni zrak s druge)<\/li>\n<li>Zagrijavanje trenja le\u017eaja na jednoj strani osovine<\/li>\n<li>Trljanje rotora stvara lokalizirano zagrijavanje<\/li>\n<li>Solarno grijanje na vanjskoj opremi<\/li>\n<li>Nepravilni postupci zagrijavanja velikih turbina<\/li>\n<\/ul>\n<p>Termalni luk obi\u010dno nestaje \u010dim se osovina ravnomjerno ohladi ili dosegne toplinsku ravnote\u017eu. Cijeli mehanizam, prevencija i praksa okretnog zup\u010danika detaljno su obra\u0111eni pod <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/thermal-bow\/\">toplinsko savijanje vratila<\/a>. Va\u017eno upozorenje ovdje je da ponovljeni ciklusi termi\u010dkog savijanja mogu na kraju dovesti vratilo iznad to\u010dke te\u010denja i ostaviti trajno deformiranje \u2014 tako da \u201cprivremeni\u201d problem, ako se zanemari dovoljno dugo, postane trajan.<\/p>\n<h3>2.3 Luk preostalog naprezanja<\/h3>\n<p>Unutarnji rezidualni naponi nastali zavarivanjem, toplinskom obradom ili strojnom obradom mogu uzrokovati polako savijanje osovine tijekom vremena, osobito kada radne temperature ili optere\u0107enja omogu\u0107uju opu\u0161tanje tih zarobljenih napona. Ovakvo savijanje mo\u017ee se pojaviti mjesecima ili godinama nakon pu\u0161tanja u rad, \u0161to \u010dini periodi\u010dne provjere ravnosti kriti\u010dnih rotora opravdanima.<\/p>\n<h2>3. Uzroci savijanja vratila<\/h2>\n<p>Razumijevanje osnovnog uzroka sprje\u010dava ponavljanje i ukazuje na ispravnu korekciju. Pokreta\u010di spadaju u tri obitelji.<\/p>\n<h3>3.1 Mehani\u010dki uzroci<\/h3>\n<ul>\n<li><strong>Preoptere\u0107enje:<\/strong> rad pri optere\u0107enjima koja prema\u0161uju projektne granice.<\/li>\n<li><strong>Nepravilno skladi\u0161tenje:<\/strong> Skladi\u0161tenje osovina vodoravno bez odgovaraju\u0107e potpore, \u0161to s vremenom dovodi do uvla\u010denja \u2014 osobito kod dugih, tankih rotora ostavljenih mjesecima na dvjema krajnjim potporama.<\/li>\n<li><strong>Nepravilno rukovanje:<\/strong> Dizanje pomo\u0107u osovine umjesto za odre\u0111ene to\u010dke podizanja<\/li>\n<li><strong>Nesre\u0107a ili udar:<\/strong> pad, sudar ili o\u0161te\u0107enje stranim predmetom.<\/li>\n<li><strong>Zaglavljivanje le\u017eaja:<\/strong> Zaglavljeni le\u017eaj mo\u017ee uzrokovati savijanje osovine pod pogonskim momentom<\/li>\n<\/ul>\n<h3>3.2 Toplinski uzroci<\/h3>\n<ul>\n<li><strong>Neravnomjerno grijanje:<\/strong> Nejednolika raspodjela temperature po obodu osovine<\/li>\n<li><strong>Brze promjene temperature:<\/strong> termi\u010dki \u0161ok tijekom pokretanja ili ga\u0161enja.<\/li>\n<li><strong>\u017dari\u0161ta:<\/strong> Lokalizirano zagrijavanje zbog trenja, trljanja ili uvjeta procesa<\/li>\n<li><strong>Nedovoljno zagrijavanje:<\/strong> Prebrzo pokretanje hladnih turbina ili velikih strojeva<\/li>\n<li><strong>Postupci za ga\u0161enje sustava:<\/strong> dopu\u0161tanje vru\u0107oj osovini da prestane rotirati prije hla\u0111enja (termi\u010dko savijanje).<\/li>\n<\/ul>\n<h3>3.3 Materijalne i proizvodne uzroke<\/h3>\n<ul>\n<li><strong>Lo\u0161a kvaliteta materijala:<\/strong> inkluzije, praznine ili nehomogenosti materijala.<\/li>\n<li><strong>Nepravilna toplinska obrada:<\/strong> preostali naponi od kaljenja ili temperiranja.<\/li>\n<li><strong>Deformacija zavara:<\/strong> asimeti\u010dno zavarivanje koje stvara preostale napetosti.<\/li>\n<li><strong>Naprezanja pri obradi:<\/strong> naprezanja inducirana tijekom proizvodnje koja se opu\u0161taju tijekom uporabe.<\/li>\n<\/ul>\n<h2>4. Kako luk vratnog vratila uzrokuje vibraciju<\/h2>\n<p>Savijeni vrat stvara vibracije kroz dva razli\u010dita, ali me\u0111usobno sura\u0111uju\u0107a mehanizma.<\/p>\n<h3>4.1 Geometrijski neuravnote\u017eenost<\/h3>\n<p>Kada se savijena osovina rotira, njezina zakrivljena sredi\u0161nja linija opisuje konus ili neku drugu nekru\u017enu putanju. \u010cak i ako je raspodjela mase rotora savr\u0161eno ravnomjerna, savijena geometrija pona\u0161a se poput ekscentri\u010dne rotiraju\u0107e mase: pomi\u010de sredi\u0161te te\u017eine s osi rotacije i generira <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/centrifugal-force\/\">centrifugalna sila<\/a> koja raste s kvadratom brzine, stvaraju\u0107i sna\u017enu 1\u00d7 vibraciju na <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/running-speed\/\">radna brzina<\/a>. Upravo zato luk se prikriva kao neuravnote\u017eenost u spektru.<\/p>\n<h3>4.2 Trenutno optere\u0107enje le\u017eajeva<\/h3>\n<p>Zakrivljenost tako\u0111er name\u0107e stati\u010dki i rotiraju\u0107i savojni moment koji se izravno prenosi na le\u017eajeve, uzrokuju\u0107i fluktuiraju\u0107a optere\u0107enja le\u017eajeva i vibracije sjedala. Na ve\u0107im rotorima upravo ovo momentno optere\u0107enje poti\u010de ubrzano tro\u0161enje le\u017eajeva i, u ekstremnim slu\u010dajevima, kontakt izme\u0111u rotora i nepokretnih brtvila. Jako zakrivljeni rotor \u010dija je zakrivljenost smje\u0161tena blizu a <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/critical-speed\/\">kriti\u010dna brzina<\/a> mo\u017ee izazvati poja\u010dan, ponekad alarmantan, odgovor pri ubrzavanju.<\/p>\n<h2>5. Otkrivanje savijanja vratila<\/h2>\n<p>Budu\u0107i da luk i stvarna neravnote\u017ea mase dijele isti 1\u00d7 potpis, razlikovanje njih je sr\u017e dijagnoze. Najmo\u0107niji diskriminator je pona\u0161anje pri vrlo maloj brzini i tijekom promjene temperature.<\/p>\n<h3>5.1 Usporedba simptoma: Bow vs Unbalance<\/h3>\n<table border=\"1\" style=\"width:100%; border-collapse:collapse;\">\n<tr>\n<th>Karakteristi\u010dno<\/th>\n<th>Neravnote\u017ea<\/th>\n<th>Progib osovine<\/th>\n<\/tr>\n<tr>\n<td>Frekvencija vibracija<\/td>\n<td>1\u00d7 brzina tr\u010danja<\/td>\n<td>1\u00d7 brzina tr\u010danja<\/td>\n<\/tr>\n<tr>\n<td>Fazni odnos<\/td>\n<td>Dosljedno, isto u svakom trenutku<\/td>\n<td>Mo\u017ee se promijeniti tijekom zagrijavanja<\/td>\n<\/tr>\n<tr>\n<td>Vibracija sporog kotrljanja<\/td>\n<td>Prisutno (proporcionalno brzini\u00b2)<\/td>\n<td>Prisutno i \u010desto zna\u010dajno \u010dak i pri vrlo maloj brzini<\/td>\n<\/tr>\n<tr>\n<td>Odgovor na uravnote\u017eenje<\/td>\n<td>Vibracije smanjene pravilnim balansiranjem<\/td>\n<td>Minimalno ili nikakvo pobolj\u0161anje; mo\u017ee se pogor\u0161ati<\/td>\n<\/tr>\n<tr>\n<td>Toplinska osjetljivost<\/td>\n<td>Relativno stabilan s temperaturom<\/td>\n<td>Zna\u010dajne promjene tijekom zagrijavanja\/hla\u0111enja<\/td>\n<\/tr>\n<tr>\n<td>Mjerenje radijalnog odstupanja<\/td>\n<td>Nisko kada rotor miruje<\/td>\n<td>Veliko radijalno odstupanje \u010dak i u mirovanju (trajni progib)<\/td>\n<\/tr>\n<\/table>\n<p>Najzna\u010dajniji red je onaj pri sporom kotrljanju. Neuravnote\u017eena sila kolapsira prema nuli kako brzina opada, jer se ona skalira s kvadratom rotacijske brzine; trajni luk, budu\u0107i da je fiksni geometrijski pomak, i dalje pokazuje znatan radijus pogre\u0161ke i 1\u00d7 pomak pri puzanju. To je test koji rje\u0161ava izjedna\u010denost.<\/p>\n<h3>5.2 Dijagnosti\u010dki testovi<\/h3>\n<h4>5.2.1 Mjerenje sporog kotrljanja<\/h4>\n<p>Okrenite vratilo vrlo polako \u2014 obi\u010dno 5\u201310% radne brzine \u2014 i izmjerite <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/run-out\/\">radijalno odstupanje<\/a> s <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/proximity-probe\/\">sonda za blizinu<\/a> ili indikator promjera. Visoka ekscentri\u010dnost pri sporom kotrljanju ukazuje na savijanje osovine ili mehani\u010dku ekscentri\u010dnost, a ne na neuravnote\u017eenost, \u010dija je centrifugalna sila pri tako niskoj brzini zanemariva. Vektor sporog kotrljanja tako\u0111er se bilje\u017ei kako bi se mogao oduzeti od podataka o radnim vibracijama, \u010dime se izolira stvarni dinami\u010dki odziv od stati\u010dke komponente savijanja.<\/p>\n<h4>5.2.2 Pomak faze pri ga\u0161enju<\/h4>\n<p>Pra\u0107enje vibracija <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/phase-angle\/\">fazni kut<\/a> dok se stroj usporava. Pravi neuravnote\u017eenost ostaje konstantna <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/phase\/\">faza<\/a> bez obzira na brzinu (udaljeno od rezonancije). Termi\u010dki savijen vratil sklon je pokazivati fazu koja se pomi\u010de kako se rotor hladi, a iscrtavanje amplitude i faze zajedno na <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/bode-plot\/\">Bodeov dijagram<\/a> ili <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/polar-plot\/\">polarni dijagram<\/a> \u010cini da se razlika puno lak\u0161e \u010dita nego sirovi brojevi.<\/p>\n<h4>5.2.3 Termi\u010dki test luka<\/h4>\n<p>Za sumnju na termi\u010dki luk pratite vibracije tijekom pokretanja i zagrijavanja. Termi\u010dki luk obi\u010dno pokazuje vibracije. <em>pove\u0107avaju\u0107i<\/em> kako se stroj zagrijava, a zatim stabilizira ili pada nakon \u0161to se postigne toplinska ravnote\u017ea \u2014 ogledalo gre\u0161ke koja raste isklju\u010divo s brzinom.<\/p>\n<h4>5.2.4 Provjera odskoka izvan stroja<\/h4>\n<p>Uklonite rotor, poduprite ga na V-blokovima ili izme\u0111u centara tokarilice i polako ga rotirajte dok mjerenjem na broj\u010danom indikatoru mjereno radijalno odstupanje. Zna\u010dajan radijalni odskok \u2014 obi\u010dno ve\u0107i od 0,001 in\u010da (25 \u00b5m) \u2014 potvr\u0111uje trajno savijanje. Ova provjera na radnom stolu predstavlja kona\u010dan dokaz, jer vratilo koje na stroju pokazuje ravno, ali je na V-blokovima savijeno, pri\u010da sasvim druga\u010diju pri\u010du od onog koje je savijeno u oba slu\u010daja.<\/p>\n<h4>5.2.5 Vizualni pregled<\/h4>\n<p>Na velikim osovinama, ni\u0161anjenje du\u017e osovine ili kori\u0161tenje opti\u010dkih metoda kao \u0161to su <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/laser-shaft-alignment\/\">lasersko poravnanje<\/a> Oprema mo\u017ee otkriti o\u010digledno savijanje koje bi samo oko moglo previdjeti.<\/p>\n<h2>6. Metode korekcije<\/h2>\n<p>Prava korekcija ovisi o te\u017eini i vrsti luka. Ne postoji jedinstveno rje\u0161enje koje odgovara svakom slu\u010daju.<\/p>\n<h3>6.1 Za trajni mehani\u010dki luk<\/h3>\n<h4>6.1.1 Ispravljanje vratila<\/h4>\n<p>Za blago do umjereno zakrivljenje \u2014 obi\u010dno ispod 0,005 in\u010da (125 \u00b5m) \u2014 osovina se ponekad mo\u017ee hladno ili vru\u0107e ispraviti hidrauli\u010dnim pre\u0161ama. Osovina se podupire i pa\u017eljivo prekomjerno savija tako da se plasti\u010dno deformira natrag u ravnom smjeru, \u0161to zahtijeva specijaliziranu opremu, vje\u0161te tehni\u010dare i strpljenje, budu\u0107i da prekomjerno ispravljanje jednostavno stvara savijanje u suprotnom smjeru.<\/p>\n<h4>6.1.2 Olak\u0161avanje toplinskog stresa<\/h4>\n<p>Tretmanom topline osovine radi otpu\u0161tanja preostalih naprezanja mo\u017ee se smanjiti ili ukloniti savijanje koje je nastalo uslijed zaklju\u010danih naprezanja u proizvodnom procesu ili zavarivanju. To zahtijeva odgovaraju\u0107u pe\u0107 i strogu kontrolu procesa kako bi se izbjeglo uvo\u0111enje novih deformacija.<\/p>\n<h4>6.1.3 Zamjena vretena<\/h4>\n<p>Kod ozbiljnog savijanja ili u kriti\u010dnoj slu\u017ebi, zamjena je \u010desto najpouzdanije rje\u0161enje. Tro\u0161ak nove osovine treba odvagnuti s vremenom zastoja i stvarnim rizikom da poku\u0161aj ispravljanja ne uspije ili se s vremenom opet opusti.<\/p>\n<h4>6.1.4 \u201cKretanje oko pramca\u201d<\/h4>\n<p>U nekim slu\u010dajevima \u2014 osobito kod velikih turbina \u2014 <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/correction-weight\/\">korekcijski utezi<\/a> mo\u017ee se izra\u010dunati i prilagoditi kako bi se suprotstavilo <em>u\u010dinak<\/em> na luk pri radnoj brzini. Ovo ne ispravlja osovinu; ono samo poni\u0161tava 1\u00d7 silu koju luk proizvodi. To je ograni\u010dena, uglavnom privremena mjera i ostavlja rotor \u010diji <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/residual-unbalance\/\">preostala neravnote\u017ea<\/a> Izgleda prihvatljivo samo pri jednoj odre\u0111enoj brzini i temperaturi.<\/p>\n<h3>6.2 Za termalni luk<\/h3>\n<h4>6.2.1 Promjene u radnim postupcima<\/h4>\n<ul>\n<li>Provedite postupke postupnog zagrijavanja.<\/li>\n<li>Odr\u017eavajte kontinuirani rad rotiraju\u0107eg mehanizma tijekom isklju\u010denja kako biste sprije\u010dili toplinski pad.<\/li>\n<li>Pa\u017eljivije kontrolirajte dovod pare ili temperaturu procesne teku\u0107ine<\/li>\n<li>Osigurajte simetri\u010dno grijanje i hla\u0111enje.<\/li>\n<\/ul>\n<h4>6.2.2 Promjene u dizajnu<\/h4>\n<ul>\n<li>Dodajte izolaciju kako biste smanjili toplinske gradijente.<\/li>\n<li>Ugradite grija\u0107e jakne za ravnomjerno zagrijavanje.<\/li>\n<li>Pobolj\u0161ajte sustav hla\u0111enja kako biste izjedna\u010dili raspodjelu temperature.<\/li>\n<\/ul>\n<h4>6.2.3 Rad okretnog sklopa<\/h4>\n<p>Za velike turbine, pokretanje okretnog mehanizma (sporo rotiraju\u0107eg pogona) tijekom zagrijavanja i hla\u0111enja odr\u017eava vratilo u rotaciji, tako da se toplina ravnomjerno raspore\u0111uje po obodu, sprje\u010davaju\u0107i gradijent koji bi ina\u010de savio rotor.<\/p>\n<h2>7. Provjera rotora na terenu<\/h2>\n<p>Kad se osovina ispravi, zamijeni ili ocijeni dovoljno ravnom za rad, rotor se i dalje mora dinami\u010dki provjeriti u vlastitim le\u017eajevima \u2014 samo radno odskakanje na radnom stolu ne dokazuje da \u0107e pri radnoj brzini raditi glatko. Prenosivi dvo-kanalni analizator poput <a href=\"https:\/\/vibromera.eu\/hr\/proizvod\/balanset-1\/\">Balanset-1A<\/a> \u010cini ovo prakti\u010dnim na licu mjesta: bilje\u017ei vektor sporog vala, a zatim mjeri 1\u00d7 <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/phase\/\">amplituda i faza<\/a> kroz raspon brzina kako bi in\u017eenjer mogao odvojiti eventualnu preostalu komponentu savijanja od stvarnog neravnote\u017enog optere\u0107enja mase. Tek kada sporom rotacijom provjereno izbo\u010denje osovine potvrdi da je osovina prihvatljivo ravna, ima smisla nastaviti s trimom. <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/balancing\/\">uravnote\u017eenost<\/a> \u2014 u kojem trenutku isti instrument izra\u010dunava <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/influence-coefficient\/\">koeficijenti utjecaja<\/a> i provjerava kona\u010dni rezultat protiv <a href=\"https:\/\/vibromera.eu\/hr\/glossary\/iso-21940-11\/\">ISO 21940-11<\/a> balansni stupanj. Mo\u017eete unaprijed izra\u010dunati tu dopu\u0161tenu preostalu vrijednost s <a href=\"https:\/\/vibromera.eu\/hr\/calculators\/residual-unbalance-iso1940\/\">Kalkulator preostalog neuravnote\u017eenja (ISO 21940-11)<\/a> prije nego \u0161to po\u010dnete.<\/p>\n<h2>8. Strategije prevencije<\/h2>\n<p>Sprje\u010davanje savijanja osovine je daleko jeftinije i br\u017ee nego njezino ispravljanje.<\/p>\n<h3>8.1 Projektiranje i proizvodnja<\/h3>\n<ul>\n<li>Koristite odgovaraju\u0107e postupke toplinske obrade kako biste smanjili preostale napetosti.<\/li>\n<li>Projektirajte odgovaraju\u0107u krutost osovine za primjenu<\/li>\n<li>Navedite materijale prikladne za toplinsko okru\u017eenje.<\/li>\n<\/ul>\n<h3>8.2 Ugradnja i odr\u017eavanje<\/h3>\n<ul>\n<li>Rotore uvijek podi\u017eite koriste\u0107i za to predvi\u0111ene to\u010dke za podizanje, nikada za osovinu<\/li>\n<li>Skladi\u0161tite rezervne rotore s odgovaraju\u0107om potporom kako biste sprije\u010dili opu\u0161tanje \u2014 idealno ih povremeno okre\u0107ite ili poduprite blizu le\u017eajnih vratila.<\/li>\n<li>Izbjegavajte mehani\u010dki udar pri rukovanju.<\/li>\n<li>Periodi\u010dno provjeravajte ravnost osovine (godi\u0161nje ili prema rasporedu proizvo\u0111a\u010da).<\/li>\n<\/ul>\n<h3>8.3 Rad<\/h3>\n<ul>\n<li>Slijedite postupke zagrijavanja i ga\u0161enja proizvo\u0111a\u010da.<\/li>\n<li>Izbjegavajte nagle promjene temperature.<\/li>\n<li>Pratite znakove termi\u010dkog savijanja tijekom pokretanja.<\/li>\n<li>Odmah istra\u017eite svaku neobja\u0161njivu promjenu u fazi vibracija.<\/li>\n<\/ul>\n<h2>9. Utjecaj na postupke uskla\u0111ivanja<\/h2>\n<p>Poku\u0161aj uravnote\u017eenja savijenog vratila op\u0107enito je uzaludan i mo\u017ee biti aktivno kontraproduktivan:<\/p>\n<ul>\n<li><strong>Neu\u010dinkovita ispravljanja:<\/strong> Te\u017eine izra\u010dunate za neravnote\u017eu mase ne mogu ispraviti geometrijski luk.<\/li>\n<li><strong>Prikrivanje problema:<\/strong> Djelomi\u010dno \u201cuspje\u0161no\u201d uravnote\u017eenje savijenog vratila mo\u017ee nakratko smanjiti vibracije, dok stvarni kvar \u2014 i optere\u0107enje le\u017eaja \u2014 ostaju netaknuti.<\/li>\n<li><strong>Izgubljeno vrijeme:<\/strong> Ponovljena balansiranja koja se ne konvergiraju sama su po sebi crvena zastavica za luk.<\/li>\n<li><strong>Potencijalna \u0161teta:<\/strong> Postavljanje velikih utega za korekciju na savijenu osovinu pove\u0107ava naprezanja i mo\u017ee dovesti do daljnjeg o\u0161te\u0107enja ili \u010dak do naprezne korozije.<\/li>\n<\/ul>\n<p><strong>Najbolja praksa:<\/strong> Uvijek provjerite savijanje osovine prije nego \u0161to zapo\u010dnete balansiranje, osobito ako rotor ima povijest grubog rukovanja, toplinskih doga\u0111aja ili vibracija koje nitko nije uspio objasniti. Provjera sporog kotrljanja u trajanju od dvije minute mo\u017ee spasiti izgubljeno poslijepodne i o\u0161te\u0107enu osovinu.<\/p>\n<hr>\n<p><a href=\"https:\/\/vibromera.eu\/hr\/glossary\/\">\u2190 Natrag na glavni indeks<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Saznajte vi\u0161e o luku vratila, trajnoj ili privremenoj zakrivljenosti vratila rotora koja uzrokuje simptome vibracija sli\u010dne neravnote\u017ei, ali zahtijeva druga\u010dije dijagnosti\u010dke i korekcijske pristupe.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"ai_generated_summary":"","footnotes":""},"categories":[109,110],"tags":[],"class_list":["post-232","glossary","type-glossary","status-publish","hentry","category-glossary","category-vibration-diagnostics"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/hr\/wp-json\/wp\/v2\/glossary\/232","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vibromera.eu\/hr\/wp-json\/wp\/v2\/glossary"}],"about":[{"href":"https:\/\/vibromera.eu\/hr\/wp-json\/wp\/v2\/types\/glossary"}],"version-history":[{"count":1,"href":"https:\/\/vibromera.eu\/hr\/wp-json\/wp\/v2\/glossary\/232\/revisions"}],"predecessor-version":[{"id":101458,"href":"https:\/\/vibromera.eu\/hr\/wp-json\/wp\/v2\/glossary\/232\/revisions\/101458"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/hr\/wp-json\/wp\/v2\/media?parent=232"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/hr\/wp-json\/wp\/v2\/categories?post=232"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/hr\/wp-json\/wp\/v2\/tags?post=232"}],"curies":[{"name":"radni list","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}