{"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\/sv\/glossary\/shaft-crack\/","title":{"rendered":"Vad \u00e4r en axelspricka? Detektion och diagnos"},"content":{"rendered":"<h1>F\u00f6rst\u00e5 axelsprickor i roterande maskiner<\/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\/sv\/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\/sv\/product\/balanset-1\/\" title=\"Portabel balanserare &amp; vibrationsanalysator Balanset-1A\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Balanset-1A komplett kit med portabel balanserare och vibrationsanalysator\" 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\/sv\/product-category\/devices\/\" rel=\"tag\">Enheter<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/sv\/product\/balanset-1\/\" title=\"Portabel balanserare &amp; vibrationsanalysator Balanset-1A\">Portabel balanserare &amp; vibrationsanalysator 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> + moms (om till\u00e4mpligt)<\/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=\"\/sv\/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=\"L\u00e4gg till i varukorg\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"L\u00e4gg till i varukorg\" 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=\"\/sv\/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=\"L\u00e4gg till i varukorgen: \u201dPortable balancer &amp; Vibration analyzer Balanset-1A\u201d\" rel=\"nofollow\" data-success_message=\"&quot;Portable balancer &amp; Vibration analyzer Balanset-1A&quot; har lagts till i din varukorg\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">L\u00e4gg till i varukorg<\/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\/sv\/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\/sv\/product\/vibration-sensor\/\" title=\"Vibrationssensor\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Balanset-1A vibrationssensor - n\u00e4rbild\" 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\/sv\/product-category\/parts\/\" rel=\"tag\">Delar<\/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\/sv\/product\/vibration-sensor\/\" title=\"Vibrationssensor\">Vibrationssensor<\/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> + moms (om till\u00e4mpligt)<\/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=\"\/sv\/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=\"L\u00e4gg till i varukorg\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"L\u00e4gg till i varukorg\" 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=\"\/sv\/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=\"L\u00e4gg till i varukorgen: \u201dVibration sensor\u201d\" rel=\"nofollow\" data-success_message=\"&quot;Vibration sensor&quot; har lagts till i din varukorg\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">L\u00e4gg till i varukorg<\/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\/sv\/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\/sv\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Optisk sensor (lasertakometer)\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Optisk sensor (lasertakometer)\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-300x200.webp 300w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-1024x682.webp 1024w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-768x512.webp 768w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-1536x1023.webp 1536w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-18x12.webp 18w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-460x306.webp 460w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-272x182.webp 272w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU.webp 1600w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/sv\/product-category\/parts\/\" rel=\"tag\">Delar<\/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\/sv\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Optisk sensor (lasertakometer)\">Optisk sensor (lasertakometer)<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>124.00<\/span> + moms (om till\u00e4mpligt)<\/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=\"\/sv\/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=\"L\u00e4gg till i varukorg\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"L\u00e4gg till i varukorg\" 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=\"\/sv\/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=\"L\u00e4gg till i varukorgen: \u201dOptical Sensor (Laser Tachometer)\u201d\" rel=\"nofollow\" data-success_message=\"&quot;Optical Sensor (Laser Tachometer)&quot; har lagts till i din varukorg\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">L\u00e4gg till i varukorg<\/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\/sv\/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\/sv\/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 rotorbalanseringssats: b\u00e4rv\u00e4ska, flerkanalig signalkonditionerare, handh\u00e5llen analysator, magnetisk bas, vibrationssensorer och spiralformade kablar.\" 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\/sv\/product-category\/devices\/\" rel=\"tag\">Enheter<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/sv\/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> + moms (om till\u00e4mpligt)<\/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=\"\/sv\/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=\"L\u00e4gg till i varukorg\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"L\u00e4gg till i varukorg\" 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=\"\/sv\/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=\"L\u00e4gg till i varukorgen: \u201dBalanset-4\u201d\" rel=\"nofollow\" data-success_message=\"&quot;Balanset-4&quot; har lagts till i din varukorg\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">L\u00e4gg till i varukorg<\/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\/sv\/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\/sv\/product\/magnet-stand\/\" title=\"Magnetiskt stativ Insize-60-kgf\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Magnetf\u00e4ste.\" 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\/sv\/product-category\/parts\/\" rel=\"tag\">Delar<\/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\/sv\/product\/magnet-stand\/\" title=\"Magnetiskt stativ Insize-60-kgf\">Magnetiskt stativ Insize-60-kgf<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>46.00<\/span> + moms (om till\u00e4mpligt)<\/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=\"\/sv\/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=\"L\u00e4gg till i varukorg\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"L\u00e4gg till i varukorg\" 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=\"\/sv\/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=\"L\u00e4gg till i varukorgen: \u201dMagnetic Stand Insize-60-kgf\u201d\" rel=\"nofollow\" data-success_message=\"&quot;Magnetic Stand Insize-60-kgf&quot; har lagts till i din varukorg\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">L\u00e4gg till i varukorg<\/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\/sv\/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\/sv\/product\/reflective-tape\/\" title=\"Reflekterande tejp\">\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=\"Reflekterande tejp\" 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\/sv\/product-category\/parts\/\" rel=\"tag\">Delar<\/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\/sv\/product\/reflective-tape\/\" title=\"Reflekterande tejp\">Reflekterande tejp<\/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> + moms (om till\u00e4mpligt)<\/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=\"\/sv\/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=\"L\u00e4gg till i varukorg\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"L\u00e4gg till i varukorg\" 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=\"\/sv\/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=\"L\u00e4gg till i varukorgen: \u201dReflective tape\u201d\" rel=\"nofollow\" data-success_message=\"&quot;Reflective tape&quot; har lagts till i din varukorg\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">L\u00e4gg till i varukorg<\/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\/sv\/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\/sv\/product\/dynamic-balancer-balanset-1a\/\" title=\"Dynamisk balanserare &quot;Balanset-1A&quot; OEM\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Balanset-1A-kit, inneh\u00e5ll med gr\u00e4nssnittsenhet, givare, varvr\u00e4knare och tillbeh\u00f6r\" 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\/sv\/product-category\/devices\/\" rel=\"tag\">Enheter<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/sv\/product\/dynamic-balancer-balanset-1a\/\" title=\"Dynamisk balanserare &quot;Balanset-1A&quot; OEM\">Dynamisk balanserare \"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> + moms (om till\u00e4mpligt)<\/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=\"\/sv\/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=\"L\u00e4gg till i varukorg\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"L\u00e4gg till i varukorg\" 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=\"\/sv\/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=\"L\u00e4gg till i varukorgen: \u201dDynamic balancer \u201cBalanset-1A\u201d OEM\u201d\" rel=\"nofollow\" data-success_message=\"&quot;Dynamic balancer \u201cBalanset-1A\u201d OEM&quot; har lagts till i din varukorg\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">L\u00e4gg till i varukorg<\/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>axelspricka<\/strong> \u00e4r en spricka eller en diskontinuitet i en roterande axel som uppst\u00e5r till f\u00f6ljd av utmattning, sp\u00e4nningskoncentration eller ett materialfel. Sprickor b\u00f6rjar n\u00e4stan alltid vid ytan och sprider sig in\u00e5t, vinkelr\u00e4tt mot riktningen f\u00f6r den maximala dragsp\u00e4nningen. I roterande maskiner h\u00f6r de till de farligaste defekterna av alla, eftersom en spricka kan utvecklas fr\u00e5n en knappt m\u00e4rkbar h\u00e5rfin spricka till ett fullst\u00e4ndigt axelbrott p\u00e5 bara n\u00e5gra timmar eller dagar, med risk f\u00f6r ett katastrofalt, livshotande haveri. Det positiva \u00e4r att en spricka som utvecklas avsl\u00f6jar sig sj\u00e4lv i <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/vibration\/\">vibrationer<\/a> signal \u2013 framf\u00f6r allt genom en stigande 2\u00d7-komponent (tv\u00e5 g\u00e5nger per varv) \u2013 s\u00e5 regelbunden <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/vibration-analysis\/\">vibrationsanalys<\/a> ger en verklig m\u00f6jlighet att f\u00e5nga den innan den sl\u00e4pper taget.<\/p>\n<h2>1. Definition: Vad \u00e4r en spricka i axeln?<\/h2>\n<p>Ur mekanisk synvinkel \u00e4r en spricka ett omr\u00e5de d\u00e4r axeln har f\u00f6rlorat sin kontinuitet och d\u00e4rmed sin styvhet. N\u00e4r axeln roterar \u00f6ppnas och st\u00e4ngs sprickan v\u00e4xelvis under den sv\u00e4ngande b\u00f6jsp\u00e4nningen, och denna \u201dandning\u201d g\u00f6r att axelns styvhet varierar beroende p\u00e5 vinkelpositionen. Denna asymmetri ligger till grund f\u00f6r de diagnostiska k\u00e4nnetecken som diskuteras nedan, och det \u00e4r just detta som skiljer en \u00e4kta tv\u00e4rg\u00e5ende spricka fr\u00e5n en permanent <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/shaft-bow\/\">axelb\u00f6jning<\/a> or a simple <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/unbalance\/\">obalans<\/a>. Det mer omfattande fenomenet, n\u00e4r sprickan har utvecklats s\u00e5 pass mycket att den p\u00e5verkar hela rotorns funktion, behandlas ibland under rubriken <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/cracked-rotor\/\">sprucken rotor<\/a>.<\/p>\n<h2>2. Vanliga orsaker till sprickor i axlar<\/h2>\n<h3>Utmattning till f\u00f6ljd av cykliska p\u00e5frestningar<\/h3>\n<p>Den fr\u00e4msta orsaken till skador p\u00e5 roterande maskiner \u00e4r utmattning, d\u00e4r skadorna ackumuleras en belastningscykel i taget:<\/p>\n<ul>\n<li><strong>B\u00f6jutmattning:<\/strong> En roterande axel med oj\u00e4mn styvhet eller excentriska belastningar uts\u00e4tts f\u00f6r helt omv\u00e4nd cyklisk b\u00f6jsp\u00e4nning.<\/li>\n<li><strong>Vridutmattning:<\/strong> sv\u00e4ngande vridmoment i kraft\u00f6verf\u00f6ringsaxlar <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/torsional-vibration\/\">torsionsvibration<\/a> and fatigue.<\/li>\n<li><strong>H\u00f6gcykelutmattning:<\/strong> Miljontals cykler ackumuleras under \u00e5rens lopp, s\u00e5 \u00e4ven relativt sm\u00e5 p\u00e5frestningar kan s\u00e5 sm\u00e5ningom leda till att en spricka uppst\u00e5r.<\/li>\n<li><strong>Sp\u00e4nningskoncentration:<\/strong> kilsp\u00e5r, tv\u00e4rg\u00e5ende h\u00e5l, rundningar och andra geometriska avbrott f\u00f6rst\u00e4rker lokalt sp\u00e4nningarna och utg\u00f6r vanligtvis utg\u00e5ngspunkter f\u00f6r sprickbildning.<\/li>\n<\/ul>\n<h3>Driftsf\u00f6rh\u00e5llanden<\/h3>\n<ul>\n<li><strong>Allvarlig obalans:<\/strong> En h\u00f6g centrifugalkraft medf\u00f6r cyklisk b\u00f6jsp\u00e4nning.<\/li>\n<li><strong>Feljustering:<\/strong> b\u00f6jmomenten fr\u00e5n <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/misalignment\/\">feljustering<\/a> p\u00e5skyndar utmattning.<\/li>\n<li><strong>Resonansdrift:<\/strong> drift vid eller n\u00e4ra en <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/critical-speed\/\">kritisk hastighet<\/a> ger upphov till stora deformationer och sp\u00e4nningar.<\/li>\n<li><strong>\u00d6verbelastning:<\/strong> drift utanf\u00f6r de angivna gr\u00e4nsv\u00e4rdena.<\/li>\n<li><strong>V\u00e4rmep\u00e5k\u00e4nning:<\/strong> snabb uppv\u00e4rmning eller nedkylning och kraftiga temperaturgradienter, vilket ocks\u00e5 kan ge upphov till en \u00f6verg\u00e5ende <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/thermal-bow\/\">termisk b\u00f6jning<\/a>.<\/li>\n<\/ul>\n<h3>Material- och tillverkningsfel<\/h3>\n<ul>\n<li><strong>Materialinneslutningar:<\/strong> slagg, h\u00e5lrum eller fr\u00e4mmande f\u00f6rem\u00e5l i axelmaterialet.<\/li>\n<li><strong>Felaktig v\u00e4rmebehandling:<\/strong> bristf\u00e4llig h\u00e4rdning eller anl\u00f6pning.<\/li>\n<li><strong>Bearbetningsfel:<\/strong> verktygsm\u00e4rken, sk\u00e5ror eller repor som fungerar som sp\u00e4nningsf\u00f6rst\u00e4rkare.<\/li>\n<li><strong>Gropkorrosion:<\/strong> ytgropar som fungerar som utg\u00e5ngspunkter f\u00f6r sprickbildning.<\/li>\n<li><strong>N\u00f6tning:<\/strong> vid presspassningsytor eller kilsp\u00e5r, d\u00e4r mikrof\u00f6rskjutningar skadar ytan.<\/li>\n<\/ul>\n<h3>Operativa h\u00e4ndelser<\/h3>\n<ul>\n<li><strong>\u00d6vervarvsh\u00e4ndelser:<\/strong> en n\u00f6dsituation eller oavsiktlig \u00f6verhastighet som medf\u00f6r stora p\u00e5frestningar.<\/li>\n<li><strong>Severe rubs:<\/strong> <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/rotor-rub\/\">rotor gnuggar<\/a> Kontaktgenererande v\u00e4rme och lokal sp\u00e4nningskoncentration<\/li>\n<li><strong>St\u00f6tbelastning:<\/strong> Pl\u00f6tsliga belastningar fr\u00e5n processst\u00f6rningar eller mekaniska st\u00f6tar<\/li>\n<li><strong>Tidigare reparationer:<\/strong> svetsning eller bearbetning som ger upphov till restsp\u00e4nningar.<\/li>\n<\/ul>\n<h2>3. Vibrationssymtom vid spricka i axeln<\/h2>\n<h3>Den karakteristiska 2\u00d7-komponenten<\/h3>\n<p>Det utm\u00e4rkande k\u00e4nnetecknet f\u00f6r en tv\u00e4rg\u00e5ende spricka i axeln \u00e4r en tydlig <strong>2\u00d7 (andra harmoniska)<\/strong> komponenten, och det \u00e4r v\u00e4rt att f\u00f6rst\u00e5 mekanismen bakom den i detalj:<\/p>\n<ul>\n<li>N\u00e4r axeln roterar \u00f6ppnas och st\u00e4ngs sprickan tv\u00e5 g\u00e5nger per varv.<\/li>\n<li>N\u00e4r sprickan befinner sig p\u00e5 trycksidan (nedre delen i rotationsriktningen) sluts den och axeln blir styvare.<\/li>\n<li>N\u00e4r den sv\u00e4nger mot sp\u00e4nningssidan (den \u00f6vre delen i rotationen) \u00f6ppnas den och axeln blir mer flexibel.<\/li>\n<li>Denna styvhetsvariation, som intr\u00e4ffar tv\u00e5 g\u00e5nger per varv, utg\u00f6r i sig en 2\u00d7-excitering.<\/li>\n<li>Amplituden 2\u00d7 \u00f6kar i takt med att sprickan blir djupare och styvhetsasymmetrin tilltar \u2014 vilket \u00e4r anledningen till att <em>trend<\/em> \u00e4r lika viktigt som den absoluta niv\u00e5n.<\/li>\n<\/ul>\n<h3>Ytterligare vibrationsindikatorer<\/h3>\n<ul>\n<li><strong>1\u00d7 f\u00f6r\u00e4ndringar:<\/strong> en gradvis \u00f6kning av 1\u00d7-komponenten i takt med att styvheten f\u00f6r\u00e4ndras och en kvarst\u00e5ende b\u00f6jning uppst\u00e5r.<\/li>\n<li><strong>H\u00f6gre \u00f6vertoner:<\/strong> 3\u00d7 och 4\u00d7 kan f\u00f6rekomma n\u00e4r sv\u00e5righetsgraden \u00f6kar.<\/li>\n<li><strong>Phase shifts:<\/strong> den <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/phase\/\">fas<\/a> vinkel\u00e4ndringar vid start eller nedvarvning samt vid olika hastigheter.<\/li>\n<li><strong>Hastighetsberoende beteende:<\/strong> Vibrationen kan variera icke-linj\u00e4rt med hastigheten.<\/li>\n<li><strong>Temperaturk\u00e4nslighet:<\/strong> M\u00e4tningarna kan f\u00f6lja den termiska expansionen n\u00e4r sprickan \u00f6ppnas eller st\u00e4ngs.<\/li>\n<\/ul>\n<h3>Beteende vid start och nedvarvning<\/h3>\n<ul>\n<li>2\u00d7-komponenten uppvisar ett ovanligt beteende under transienter.<\/li>\n<li>A <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/bode-plot\/\">Bode-diagrammet<\/a> kan uppvisa tv\u00e5 resonanstoppar, en vid halva respektive kritiska hastighet, n\u00e4r 2\u00d7-exciteringen sveper igenom.<\/li>\n<li>Fasf\u00f6rloppet f\u00f6r 1\u00d7-komponenten kan skilja sig avsev\u00e4rt fr\u00e5n ett normalt reaktionsm\u00f6nster vid obalans.<\/li>\n<\/ul>\n<h2>4. Detektionsmetoder<\/h2>\n<h3>Vibrations\u00f6vervakning och f\u00e4ltm\u00e4tningar<\/h3>\n<p>Eftersom varningssignalen syns i spektrumet och utvecklas gradvis \u00e4r regelbundna m\u00e4tningar den f\u00f6rsta f\u00f6rsvarslinjen:<\/p>\n<ul>\n<li><strong>Trendanalys:<\/strong> H\u00e5ll koll p\u00e5 f\u00f6rh\u00e5llandet 2\u00d7\/1\u00d7 \u00f6ver tid; en stadig \u00f6kning \u00e4r en varningssignal, och ett f\u00f6rh\u00e5llande \u00f6ver ungef\u00e4r 0,5 b\u00f6r unders\u00f6kas n\u00e4rmare. Pl\u00f6tsliga f\u00f6r\u00e4ndringar i m\u00f6nstret \u00e4r lika misst\u00e4nkta.<\/li>\n<li><strong>Spektralanalys:<\/strong> routine <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/fft\/\">FFT<\/a> m\u00e4tningar, j\u00e4mf\u00f6rda med tidigare <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/baseline\/\">baslinje<\/a>, visa uppkomsten eller tillv\u00e4xten av en 2\u00d7-topp.<\/li>\n<li><strong>Transientanalys:<\/strong> <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/waterfall-plot\/\">vattenfallsdiagram<\/a> och Bode-diagram fr\u00e5n uppstart och nedvarvning avsl\u00f6jar ovanligt beteende vid passager genom kritiska varvtal.<\/li>\n<\/ul>\n<p>Att m\u00e4ta amplitud och fas f\u00f6r 1\u00d7- och 2\u00d7-komponenterna \u00e4r precis den typ av m\u00e4tning som en b\u00e4rbar tv\u00e5kanalsanalysator g\u00f6r till en rutinuppgift. Med ett fasrefererat instrument som <a href=\"https:\/\/vibromera.eu\/sv\/produkt\/balanset-1\/\">Balanset-1A<\/a>... kan en tekniker registrera 1\u00d7- och 2\u00d7-vektorerna vid lagren under normal drift och vid varje utrullning, vilket ger en trendbild som skiljer en ofarlig 2\u00d7 fr\u00e5n en som \u00f6kar i v\u00e4rde \u2013 skillnaden mellan ett planerat driftstopp och en oplanerad haveri.<\/p>\n<h3>Icke-vibrationsbaserade metoder<\/h3>\n<p>En misst\u00e4nkt vibrationstrend b\u00f6r alltid bekr\u00e4ftas genom direkt <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/non-destructive-testing\/\">of\u00f6rst\u00f6rande provning<\/a>:<\/p>\n<ul>\n<li><strong>Magnetpulverprovning (MPI):<\/strong> uppt\u00e4cker yt- och ytn\u00e4ra sprickor med h\u00f6g tillf\u00f6rlitlighet p\u00e5 \u00e5tkomliga ferromagnetiska axlar; ett standardinslag vid rutininspektioner under driftstopp.<\/li>\n<li><strong>Ultraljudprovning (UT):<\/strong> uppt\u00e4cker inre och ytliga sprickor och kan hitta dem innan n\u00e5gra vibrationssymtom upptr\u00e4der; kr\u00e4ver specialutrustning och utbildad personal och \u00e4r f\u00f6rstahandsmetoden f\u00f6r kritiska axlar.<\/li>\n<li><strong>Penetrantprovning:<\/strong> en enkel metod f\u00f6r ytsprickor som kr\u00e4ver reng\u00f6ring och ytf\u00f6rberedelse, anv\u00e4ndbar f\u00f6r \u00e5tkomliga omr\u00e5den under ett driftstopp.<\/li>\n<li><strong>Virvelstr\u00f6msprovning:<\/strong> ber\u00f6ringsfri detektering av ytsprickor som l\u00e4mpar sig f\u00f6r automatiserad inspektion och fungerar p\u00e5 b\u00e5de magnetiska och icke-magnetiska material.<\/li>\n<\/ul>\n<h2>5. \u00c5tg\u00e4rder vid uppt\u00e4ckt och korrigering<\/h2>\n<h3>Omedelbara \u00e5tg\u00e4rder vid uppt\u00e4ckt<\/h3>\n<ol>\n<li><strong>\u00d6ka \u00f6vervakningsfrekvensen:<\/strong> \u00f6ka frekvensen fr\u00e5n en g\u00e5ng i m\u00e5naden till en g\u00e5ng i veckan eller dagligen.<\/li>\n<li><strong>Minska driftsp\u00e5frestningarna:<\/strong> s\u00e4nk hastigheten eller belastningen om m\u00f6jligt.<\/li>\n<li><strong>Planera en avst\u00e4ngning:<\/strong> Planera reparation eller utbyte s\u00e5 snart som m\u00f6jligt<\/li>\n<li><strong>Utf\u00f6r NDE:<\/strong> bekr\u00e4fta sprickans f\u00f6rekomst och direkt bed\u00f6ma dess omfattning.<\/li>\n<li><strong>Riskbed\u00f6mning:<\/strong> formellt avg\u00f6ra om det \u00e4r s\u00e4kert att forts\u00e4tta driften.<\/li>\n<\/ol>\n<h3>L\u00e5ngsiktiga l\u00f6sningar<\/h3>\n<ul>\n<li><strong>Byte av axel:<\/strong> det mest p\u00e5litliga s\u00e4ttet att \u00e5tg\u00e4rda en konstaterad spricka.<\/li>\n<li><strong>Reparation (i vissa fall):<\/strong> Vissa sprickor kan fr\u00e4sas bort och byggas upp med svetsning, men endast efter en bed\u00f6mning av en expert.<\/li>\n<li><strong>Rotorsaksanalys:<\/strong> ta reda p\u00e5 varf\u00f6r sprickan uppstod s\u00e5 att den inte upprepas.<\/li>\n<li><strong>Konstruktions\u00e4ndringar:<\/strong> minska sp\u00e4nningskoncentrationer, f\u00f6rb\u00e4ttra materialvalet eller \u00e4ndra driftsf\u00f6rh\u00e5llandena.<\/li>\n<\/ul>\n<h2>6. F\u00f6rebyggande strategier<\/h2>\n<h3>Designfas<\/h3>\n<ul>\n<li>Undvik skarpa h\u00f6rn och sp\u00e4nningskoncentrationer.<\/li>\n<li>Anv\u00e4nd gener\u00f6sa filetradier vid diametr\u00f6verg\u00e5ngar.<\/li>\n<li>V\u00e4lj material som \u00e4r anpassade efter belastningsniv\u00e5n och milj\u00f6n.<\/li>\n<li>Utf\u00f6r sp\u00e4nningsanalys med finit elementmetod p\u00e5 kritiska geometrier.<\/li>\n<li>Anv\u00e4nd ytbehandlingar som kulbombning eller nitrering f\u00f6r att \u00f6ka utmattningsh\u00e5llfastheten.<\/li>\n<\/ul>\n<h3>Driftsfasen<\/h3>\n<ul>\n<li>H\u00e5ll goda <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/balance-quality\/\">balanskvalitet<\/a> f\u00f6r att minimera cyklisk b\u00f6jsp\u00e4nning.<\/li>\n<li>S\u00e4kerst\u00e4ll exakt uppriktning.<\/li>\n<li>Undvik l\u00e5ngvarig drift vid kritiska varvtal.<\/li>\n<li>F\u00f6rhindra \u00f6vervarvning.<\/li>\n<li>Hantera v\u00e4rmesp\u00e4nningar med korrekta rutiner f\u00f6r uppv\u00e4rmning och avsvalning.<\/li>\n<\/ul>\n<h3>Underh\u00e5llsfas<\/h3>\n<ul>\n<li>Kontrollera regelbundet med hj\u00e4lp av l\u00e4mpliga icke-f\u00f6rst\u00f6rande provningsmetoder.<\/li>\n<li>K\u00f6r en vibrations <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/trending\/\">trendning<\/a> ett program f\u00f6r att uppt\u00e4cka tidiga symtom.<\/li>\n<li>Utf\u00f6r ombalansering regelbundet f\u00f6r att h\u00e5lla utmattningssp\u00e4nningarna l\u00e5ga \u2014 p\u00e5 plats <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/faltbalansering\/\">f\u00e4ltbalansering<\/a> g\u00f6r detta m\u00f6jligt utan att man beh\u00f6ver ta bort rotorn.<\/li>\n<li>Underh\u00e5ll korrosionsskydd och ytbehandlingar.<\/li>\n<\/ul>\n<p>Axelsprickor \u00e4r en av de allvarligaste felmekanismerna i roterande maskiner, d\u00e4r f\u00f6ljderna av att missa en spricka kan inneb\u00e4ra havererad utrustning och m\u00e4nniskor i fara. Det \u00e4r kombinationen som fungerar: vibrations\u00f6vervakning f\u00f6r att tidigt flagga den karakteristiska 2\u00d7-signaturen och periodisk of\u00f6rst\u00f6rande provning f\u00f6r att bekr\u00e4fta och storleksbest\u00e4mma det som vibrationerna bara antyder. Tillsammans m\u00f6jligg\u00f6r de planerat, kontrollerat underh\u00e5ll \u2014 och hindrar en till synes obetydlig h\u00e5rfin spricka fr\u00e5n att utvecklas till ett pl\u00f6tsligt, v\u00e5ldsamt brott.<\/p>\n<hr>\n<p><a href=\"https:\/\/vibromera.eu\/sv\/glossary\/\">\u2190 Tillbaka till huvudregistret<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>L\u00e4r dig om axelsprickor i roterande maskiner, deras orsaker, karakteristiska vibrationssignaturer inklusive 2X-komponenter och viktiga detektionsmetoder f\u00f6r att f\u00f6rhindra katastrofala fel.<\/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\/sv\/wp-json\/wp\/v2\/glossary\/234","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vibromera.eu\/sv\/wp-json\/wp\/v2\/glossary"}],"about":[{"href":"https:\/\/vibromera.eu\/sv\/wp-json\/wp\/v2\/types\/glossary"}],"version-history":[{"count":1,"href":"https:\/\/vibromera.eu\/sv\/wp-json\/wp\/v2\/glossary\/234\/revisions"}],"predecessor-version":[{"id":101407,"href":"https:\/\/vibromera.eu\/sv\/wp-json\/wp\/v2\/glossary\/234\/revisions\/101407"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/sv\/wp-json\/wp\/v2\/media?parent=234"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/sv\/wp-json\/wp\/v2\/categories?post=234"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/sv\/wp-json\/wp\/v2\/tags?post=234"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}