{"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\/cs\/glossary\/shaft-crack\/","title":{"rendered":"Co je to trhlina v h\u0159\u00eddeli? Detekce a diagnostika"},"content":{"rendered":"<h1>Pochopen\u00ed trhlin v h\u0159\u00eddeli rotuj\u00edc\u00edch stroj\u016f<\/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\/cs\/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\/cs\/product\/balanset-1\/\" title=\"P\u0159enosn\u00fd vyva\u017eova\u010d a analyz\u00e1tor vibrac\u00ed 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=\"Kompletn\u00ed sada p\u0159enosn\u00e9ho vyva\u017eova\u010de a analyz\u00e1toru vibrac\u00ed Balanset-1A\" 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\/cs\/product-category\/devices\/\" rel=\"tag\">Za\u0159\u00edzen\u00ed<\/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\/cs\/product\/balanset-1\/\" title=\"P\u0159enosn\u00fd vyva\u017eova\u010d a analyz\u00e1tor vibrac\u00ed Balanset-1A\">P\u0159enosn\u00fd vyva\u017eova\u010d a analyz\u00e1tor vibrac\u00ed 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> + DPH (pokud se uplat\u0148uje)<\/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=\"\/cs\/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=\"P\u0159idat do ko\u0161\u00edku\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"P\u0159idat do ko\u0161\u00edku\" 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=\"\/cs\/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=\"P\u0159idat do ko\u0161\u00edku: \u201cPortable balancer &amp; Vibration analyzer Balanset-1A\u201d\" rel=\"nofollow\" data-success_message=\"\u201cPortable balancer &amp; Vibration analyzer Balanset-1A\u201d byl p\u0159id\u00e1n do ko\u0161\u00edku\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">P\u0159idat do ko\u0161\u00edku<\/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\/cs\/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\/cs\/product\/vibration-sensor\/\" title=\"Sn\u00edma\u010d vibrac\u00ed\">\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=\"Sn\u00edma\u010d vibrac\u00ed Balanset-1A zbl\u00edzka\" 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\/cs\/product-category\/parts\/\" rel=\"tag\">D\u00edly<\/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\/cs\/product\/vibration-sensor\/\" title=\"Sn\u00edma\u010d vibrac\u00ed\">Sn\u00edma\u010d vibrac\u00ed<\/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> + DPH (pokud se uplat\u0148uje)<\/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=\"\/cs\/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=\"P\u0159idat do ko\u0161\u00edku\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"P\u0159idat do ko\u0161\u00edku\" 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=\"\/cs\/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=\"P\u0159idat do ko\u0161\u00edku: \u201cVibration sensor\u201d\" rel=\"nofollow\" data-success_message=\"\u201cVibration sensor\u201d byl p\u0159id\u00e1n do ko\u0161\u00edku\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">P\u0159idat do ko\u0161\u00edku<\/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\/cs\/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\/cs\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Optick\u00fd senzor (laserov\u00fd ot\u00e1\u010dkom\u011br)\">\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=\"Optick\u00fd senzor (laserov\u00fd ot\u00e1\u010dkom\u011br)\" 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\/cs\/product-category\/parts\/\" rel=\"tag\">D\u00edly<\/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\/cs\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Optick\u00fd senzor (laserov\u00fd ot\u00e1\u010dkom\u011br)\">Optick\u00fd senzor (laserov\u00fd ot\u00e1\u010dkom\u011br)<\/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> + DPH (pokud se uplat\u0148uje)<\/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=\"\/cs\/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=\"P\u0159idat do ko\u0161\u00edku\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"P\u0159idat do ko\u0161\u00edku\" 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=\"\/cs\/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=\"P\u0159idat do ko\u0161\u00edku: \u201cOptical Sensor (Laser Tachometer)\u201d\" rel=\"nofollow\" data-success_message=\"\u201cOptical Sensor (Laser Tachometer)\u201d byl p\u0159id\u00e1n do ko\u0161\u00edku\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">P\u0159idat do ko\u0161\u00edku<\/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\/cs\/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\/cs\/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=\"Sada pro vyva\u017eov\u00e1n\u00ed rotor\u016f Vibromera: p\u0159epravn\u00ed kuf\u0159\u00edk, v\u00edcekan\u00e1lov\u00fd zesilova\u010d sign\u00e1lu, ru\u010dn\u00ed analyz\u00e1tor, magnetick\u00e1 z\u00e1kladna, vibra\u010dn\u00ed senzory a spir\u00e1lov\u00e9 kabely.\" 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\/cs\/product-category\/devices\/\" rel=\"tag\">Za\u0159\u00edzen\u00ed<\/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\/cs\/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> + DPH (pokud se uplat\u0148uje)<\/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=\"\/cs\/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=\"P\u0159idat do ko\u0161\u00edku\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"P\u0159idat do ko\u0161\u00edku\" 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=\"\/cs\/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=\"P\u0159idat do ko\u0161\u00edku: \u201cBalanset-4\u201d\" rel=\"nofollow\" data-success_message=\"\u201cBalanset-4\u201d byl p\u0159id\u00e1n do ko\u0161\u00edku\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">P\u0159idat do ko\u0161\u00edku<\/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\/cs\/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\/cs\/product\/magnet-stand\/\" title=\"Magnetick\u00fd stojan 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=\"Magnetick\u00e1 z\u00e1kladna.\" 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\/cs\/product-category\/parts\/\" rel=\"tag\">D\u00edly<\/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\/cs\/product\/magnet-stand\/\" title=\"Magnetick\u00fd stojan Insize-60 kgf\">Magnetick\u00fd stojan 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> + DPH (pokud se uplat\u0148uje)<\/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=\"\/cs\/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=\"P\u0159idat do ko\u0161\u00edku\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"P\u0159idat do ko\u0161\u00edku\" 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=\"\/cs\/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=\"P\u0159idat do ko\u0161\u00edku: \u201cMagnetic Stand Insize-60-kgf\u201d\" rel=\"nofollow\" data-success_message=\"\u201cMagnetic Stand Insize-60-kgf\u201d byl p\u0159id\u00e1n do ko\u0161\u00edku\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">P\u0159idat do ko\u0161\u00edku<\/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\/cs\/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\/cs\/product\/reflective-tape\/\" title=\"Reflexn\u00ed p\u00e1ska\">\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=\"Reflexn\u00ed p\u00e1ska\" 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\/cs\/product-category\/parts\/\" rel=\"tag\">D\u00edly<\/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\/cs\/product\/reflective-tape\/\" title=\"Reflexn\u00ed p\u00e1ska\">Reflexn\u00ed p\u00e1ska<\/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> + DPH (pokud se uplat\u0148uje)<\/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=\"\/cs\/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=\"P\u0159idat do ko\u0161\u00edku\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"P\u0159idat do ko\u0161\u00edku\" 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=\"\/cs\/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=\"P\u0159idat do ko\u0161\u00edku: \u201cReflective tape\u201d\" rel=\"nofollow\" data-success_message=\"\u201cReflective tape\u201d byl p\u0159id\u00e1n do ko\u0161\u00edku\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">P\u0159idat do ko\u0161\u00edku<\/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\/cs\/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\/cs\/product\/dynamic-balancer-balanset-1a\/\" title=\"Dynamick\u00fd vyva\u017eova\u010d &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=\"Obsah sady Balanset-1A s jednotkou rozhran\u00ed, senzory, ot\u00e1\u010dkom\u011brem a p\u0159\u00edslu\u0161enstv\u00edm\" 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\/cs\/product-category\/devices\/\" rel=\"tag\">Za\u0159\u00edzen\u00ed<\/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\/cs\/product\/dynamic-balancer-balanset-1a\/\" title=\"Dynamick\u00fd vyva\u017eova\u010d &quot;Balanset-1A&quot; OEM\">Dynamick\u00fd vyva\u017eova\u010d \"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> + DPH (pokud se uplat\u0148uje)<\/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=\"\/cs\/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=\"P\u0159idat do ko\u0161\u00edku\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"P\u0159idat do ko\u0161\u00edku\" 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=\"\/cs\/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=\"P\u0159idat do ko\u0161\u00edku: \u201cDynamic balancer \u201cBalanset-1A\u201d OEM\u201d\" rel=\"nofollow\" data-success_message=\"\u201cDynamic balancer \u201cBalanset-1A\u201d OEM\u201d byl p\u0159id\u00e1n do ko\u0161\u00edku\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">P\u0159idat do ko\u0161\u00edku<\/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>prasklina v h\u0159\u00eddeli<\/strong> je trhlina nebo diskontinuita v rotuj\u00edc\u00edm h\u0159\u00eddeli, kter\u00e1 vznik\u00e1 z \u00fanavy, koncentrace nap\u011bt\u00ed nebo materi\u00e1lov\u00e9 vady. Trhliny t\u00e9m\u011b\u0159 v\u017edy za\u010d\u00ednaj\u00ed na povrchu a \u0161\u00ed\u0159\u00ed se dovnit\u0159, postupuj\u00ed kolmo ke sm\u011bru maxim\u00e1ln\u00edho tahov\u00e9ho nap\u011bt\u00ed. V rota\u010dn\u00edch stroj\u00edch pat\u0159\u00ed k nejnebezpe\u010dn\u011bj\u0161\u00edm z\u00e1vad\u00e1m v\u016fbec, proto\u017ee trhlina m\u016f\u017ee p\u0159ej\u00edt z nezjistiteln\u00e9 vlasov\u00e9 trhliny k \u00fapln\u00e9mu lomu h\u0159\u00eddele b\u011bhem n\u011bkolika hodin nebo dn\u00ed, s rizikem katastrofick\u00e9ho, \u017eivot ohro\u017euj\u00edc\u00edho selh\u00e1n\u00ed. Z\u00e1chrannou kotvou je to, \u017ee vyv\u00edjej\u00edc\u00ed se trhlina prozrad\u00ed sama sebe v <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/vibration\/\">vibrace<\/a> sign\u00e1l \u2014 nejcharakteristi\u010dt\u011bji prost\u0159ednictv\u00edm nar\u016fstaj\u00edc\u00ed slo\u017eky 2\u00d7 (dvakr\u00e1t za ot\u00e1\u010dku) \u2014 proto d\u016fsledn\u00e1 <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/vibration-analysis\/\">anal\u00fdza vibrac\u00ed<\/a> nab\u00edz\u00ed skute\u010dnou \u0161anci ji zachytit d\u0159\u00edve, ne\u017e dojde k lomu.<\/p>\n<h2>1. Definice: Co je trhlina h\u0159\u00eddele?<\/h2>\n<p>Mechanicky je trhlina oblast, kde h\u0159\u00eddel ztratil svoji kontinuitu, a tedy i tuhost. P\u0159i ot\u00e1\u010den\u00ed h\u0159\u00eddele se trhlina st\u0159\u00eddav\u011b otev\u00edr\u00e1 a zav\u00edr\u00e1 vlivem st\u0159\u00eddav\u00e9ho ohybov\u00e9ho nap\u011bt\u00ed, a toto &#8220;d\u00fdch\u00e1n\u00ed&#8221; zp\u016fsobuje, \u017ee tuhost h\u0159\u00eddele se m\u011bn\u00ed v z\u00e1vislosti na \u00fahlov\u00e9m postaven\u00ed. Tato asymetrie je z\u00e1kladem diagnostick\u00fdch p\u0159\u00edznak\u016f popsan\u00fdch n\u00ed\u017ee a pr\u00e1v\u011b ona odli\u0161uje skute\u010dnou p\u0159\u00ed\u010dnou trhlinu od trval\u00e9ho <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/shaft-bow\/\">pr\u016fhyb h\u0159\u00eddele<\/a> or a simple <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/unbalance\/\">nevyv\u00e1\u017eenost<\/a>. \u0160ir\u0161\u00ed jev, kdy trhlina pokro\u010dila natolik, \u017ee m\u011bn\u00ed chov\u00e1n\u00ed cel\u00e9ho rotoru, je n\u011bkdy \u0159azen pod pojem <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/cracked-rotor\/\">praskl\u00fd rotor<\/a>.<\/p>\n<h2>2. Obvykl\u00e9 p\u0159\u00ed\u010diny trhlin h\u0159\u00eddele<\/h2>\n<h3>\u00danava zp\u016fsoben\u00e1 cyklick\u00fdm nam\u00e1h\u00e1n\u00edm<\/h3>\n<p>Dominantn\u00ed p\u0159\u00ed\u010dina v rota\u010dn\u00edch stroj\u00edch \u2014 \u00fanava hromad\u00ed po\u0161kozen\u00ed po jednom silov\u00e9m cyklu:<\/p>\n<ul>\n<li><strong>\u00danava z ohybu:<\/strong> rotuj\u00edc\u00ed h\u0159\u00eddel s nerovnom\u011brnou tuhost\u00ed nebo mimost\u0159edov\u00fdmi zat\u00ed\u017een\u00edmi je vystaven pln\u011b st\u0159\u00eddav\u00e9mu cyklick\u00e9mu ohybov\u00e9mu nap\u011bt\u00ed.<\/li>\n<li><strong>Torzn\u00ed \u00fanava:<\/strong> kmitaj\u00edc\u00ed to\u010div\u00fd moment v h\u0159\u00eddel\u00edch pro p\u0159enos v\u00fdkonu zp\u016fsobuje <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/torsional-vibration\/\">torzn\u00ed vibrace<\/a> and fatigue.<\/li>\n<li><strong>\u00danava p\u0159i vysok\u00e9m po\u010dtu cykl\u016f:<\/strong> miliony cykl\u016f se hromad\u00ed v pr\u016fb\u011bhu let, tak\u017ee i m\u00edrn\u00e1 nap\u011bt\u00ed mohou nakonec iniciovat trhlinu.<\/li>\n<li><strong>Koncentrace nap\u011bt\u00ed:<\/strong> dr\u00e1\u017eky pro pero, p\u0159\u00ed\u010dn\u00e9 otvory, zaoblen\u00ed a jin\u00e9 geometrick\u00e9 diskontinuity lok\u00e1ln\u011b zvy\u0161uj\u00ed nap\u011bt\u00ed a jsou obvykl\u00fdmi m\u00edsty vzniku trhlin.<\/li>\n<\/ul>\n<h3>Provozn\u00ed podm\u00ednky<\/h3>\n<ul>\n<li><strong>Nadm\u011brn\u00e1 nev\u00fdvaha:<\/strong> vysok\u00e1 odst\u0159ediv\u00e1 s\u00edla zp\u016fsobuje cyklick\u00e9 ohybov\u00e9 nam\u00e1h\u00e1n\u00ed.<\/li>\n<li><strong>Nespr\u00e1vn\u00e9 zarovn\u00e1n\u00ed:<\/strong> ohybov\u00e9 momenty zp\u016fsoben\u00e9 <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/misalignment\/\">nesouosost<\/a> urychluj\u00ed \u00fanavu.<\/li>\n<li><strong>Provoz v rezonanci:<\/strong> provoz na rezonanci nebo v jej\u00ed bl\u00edzkosti <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/critical-speed\/\">kritick\u00e1 rychlost<\/a> zp\u016fsobuje velk\u00e9 pr\u016fhyby a nap\u011bt\u00ed.<\/li>\n<li><strong>P\u0159et\u00ed\u017een\u00ed:<\/strong> provoz p\u0159ekra\u010duj\u00edc\u00ed konstruk\u010dn\u00ed limity.<\/li>\n<li><strong>Tepeln\u00e9 nam\u00e1h\u00e1n\u00ed:<\/strong> rychl\u00e9 oh\u0159\u00edv\u00e1n\u00ed nebo ochlazov\u00e1n\u00ed a strm\u00e9 teplotn\u00ed gradienty, kter\u00e9 mohou rovn\u011b\u017e vyvolat p\u0159echodn\u00fd <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/thermal-bow\/\">tepeln\u00e9 prohnut\u00ed h\u0159\u00eddele<\/a>.<\/li>\n<\/ul>\n<h3>Materi\u00e1lov\u00e9 a v\u00fdrobn\u00ed vady<\/h3>\n<ul>\n<li><strong>Materi\u00e1lov\u00e9 vm\u011bstky:<\/strong> strusky, dutiny nebo ciz\u00ed p\u0159\u00edm\u011bsi v materi\u00e1lu h\u0159\u00eddele.<\/li>\n<li><strong>Nespr\u00e1vn\u00e9 tepeln\u00e9 zpracov\u00e1n\u00ed:<\/strong> nedostate\u010dn\u00e9 kalen\u00ed nebo popou\u0161t\u011bn\u00ed.<\/li>\n<li><strong>V\u00fdrobn\u00ed vady:<\/strong> stopy po n\u00e1stroji, vrypy nebo \u0161kr\u00e1bance p\u016fsob\u00edc\u00ed jako koncentr\u00e1tory nap\u011bt\u00ed.<\/li>\n<li><strong>Korozn\u00ed d\u016flkov\u00e1n\u00ed:<\/strong> povrchov\u00e9 d\u016flky, kter\u00e9 slou\u017e\u00ed jako m\u00edsta iniciace trhlin.<\/li>\n<li><strong>Fretting:<\/strong> na rozhran\u00edch lisovan\u00fdch spoj\u016f nebo dr\u00e1\u017ek\u00e1ch pro pero, kde mikroposuvy po\u0161kozuj\u00ed povrch.<\/li>\n<\/ul>\n<h3>Provozn\u00ed ud\u00e1losti<\/h3>\n<ul>\n<li><strong>P\u0159eto\u010den\u00ed:<\/strong> havarijn\u00ed nebo n\u00e1hodn\u00e9 p\u0159eto\u010den\u00ed zp\u016fsobuj\u00edc\u00ed vysok\u00e9 nap\u011bt\u00ed.<\/li>\n<li><strong>Severe rubs:<\/strong> <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/rotor-rub\/\">t\u0159en\u00ed rotoru<\/a> Kontakt generuj\u00edc\u00ed teplo a lok\u00e1ln\u00ed koncentrace nap\u011bt\u00ed<\/li>\n<li><strong>R\u00e1zov\u00e9 zat\u00ed\u017een\u00ed:<\/strong> N\u00e1hl\u00e9 zat\u00ed\u017een\u00ed v d\u016fsledku procesn\u00edch poruch nebo mechanick\u00fdch ot\u0159es\u016f<\/li>\n<li><strong>P\u0159edchoz\u00ed opravy:<\/strong> sva\u0159ov\u00e1n\u00ed nebo obr\u00e1b\u011bn\u00ed, kter\u00e9 zanech\u00e1vaj\u00ed zbytkov\u00e9 nap\u011bt\u00ed.<\/li>\n<\/ul>\n<h2>3. Vibra\u010dn\u00ed p\u0159\u00edznaky praskl\u00e9ho h\u0159\u00eddele<\/h2>\n<h3>Charakteristick\u00e1 slo\u017eka 2\u00d7<\/h3>\n<p>Typick\u00fdm znakem p\u0159\u00ed\u010dn\u00e9 trhliny h\u0159\u00eddele je v\u00fdrazn\u00e1 <strong>2\u00d7 (druh\u00e1 harmonick\u00e1)<\/strong> slo\u017eka a mechanismus, kter\u00fd za n\u00ed stoj\u00ed, stoj\u00ed za p\u0159esn\u00e9 pochopen\u00ed:<\/p>\n<ul>\n<li>P\u0159i ot\u00e1\u010den\u00ed h\u0159\u00eddele se trhlina otev\u00edr\u00e1 a zav\u00edr\u00e1 dvakr\u00e1t za ot\u00e1\u010dku.<\/li>\n<li>Kdy\u017e je trhlina na stran\u011b tlaku (v doln\u00ed \u010d\u00e1sti rotace), zav\u00edr\u00e1 se a h\u0159\u00eddel je tu\u017e\u0161\u00ed.<\/li>\n<li>Kdy\u017e se p\u0159esune na stranu tahu (v horn\u00ed \u010d\u00e1sti rotace), otev\u00edr\u00e1 se a h\u0159\u00eddel je poddajn\u011bj\u0161\u00ed.<\/li>\n<li>Tato zm\u011bna tuhosti dvakr\u00e1t za ot\u00e1\u010dku je sama o sob\u011b bud\u00edc\u00ed silou s frekvenc\u00ed 2\u00d7.<\/li>\n<li>Amplituda 2\u00d7 roste s prohlubuj\u00edc\u00ed se trhlinou a rostouc\u00ed asymetri\u00ed tuhosti \u2014 proto je <em>trend<\/em> d\u016fle\u017eit\u00fd stejn\u011b jako absolutn\u00ed \u00farove\u0148.<\/li>\n<\/ul>\n<h3>Dal\u0161\u00ed indik\u00e1tory vibrac\u00ed<\/h3>\n<ul>\n<li><strong>1\u00d7 zm\u011bny:<\/strong> postupn\u00fd n\u00e1r\u016fst slo\u017eky 1\u00d7 v d\u016fsledku zm\u011bn\u011bn\u00e9 tuhosti a rozvoje zbytkov\u00e9ho pr\u016fhybu.<\/li>\n<li><strong>Vy\u0161\u0161\u00ed harmonick\u00e9:<\/strong> Slo\u017eky 3\u00d7 a 4\u00d7 se mohou objevit s rostouc\u00ed z\u00e1va\u017enost\u00ed.<\/li>\n<li><strong>Phase shifts:<\/strong> na <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/phase\/\">f\u00e1ze<\/a> zm\u011bny \u00fahlu p\u0159i rozb\u011bhu nebo dob\u011bhu a p\u0159i r\u016fzn\u00fdch rychlostech.<\/li>\n<li><strong>Chov\u00e1n\u00ed z\u00e1visl\u00e9 na ot\u00e1\u010dk\u00e1ch:<\/strong> vibrace se mohou s ot\u00e1\u010dkami m\u011bnit neline\u00e1rn\u011b.<\/li>\n<li><strong>Citlivost na teplotu:<\/strong> hodnoty mohou sledovat tepelnou rozta\u017enost p\u0159i otev\u00edr\u00e1n\u00ed nebo zav\u00edr\u00e1n\u00ed trhliny.<\/li>\n<\/ul>\n<h3>Chov\u00e1n\u00ed p\u0159i rozb\u011bhu a dob\u011bhu<\/h3>\n<ul>\n<li>Slo\u017eka 2\u00d7 se p\u0159i p\u0159echodov\u00fdch stavech chov\u00e1 neobvykle.<\/li>\n<li>A <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/bode-plot\/\">Bodeho graf<\/a> m\u016f\u017ee vykazovat dva rezonan\u010dn\u00ed vrcholy, jeden v polovin\u011b ka\u017ed\u00e9 kritick\u00e9 ot\u00e1\u010dky, jak 2\u00d7 buzen\u00ed p\u0159i rozb\u011bhu\/dob\u011bhu proch\u00e1z\u00ed t\u011bmito hodnotami.<\/li>\n<li>Pr\u016fb\u011bh f\u00e1ze slo\u017eky 1\u00d7 se m\u016f\u017ee v\u00fdrazn\u011b li\u0161it od norm\u00e1ln\u00ed odezvy na nev\u00fdvahu.<\/li>\n<\/ul>\n<h2>4. Metody detekce<\/h2>\n<h3>Monitorov\u00e1n\u00ed vibrac\u00ed a m\u011b\u0159en\u00ed v provozu<\/h3>\n<p>Proto\u017ee varov\u00e1n\u00ed m\u00e1 spektr\u00e1ln\u00ed a postupn\u00fd charakter, pravideln\u00e9 m\u011b\u0159en\u00ed tvo\u0159\u00ed prvn\u00ed linii obrany:<\/p>\n<ul>\n<li><strong>Trendy:<\/strong> sledujte pom\u011br 2\u00d7\/1\u00d7 v \u010dase; jeho trval\u00fd n\u00e1r\u016fst je varovn\u00fdm sign\u00e1lem a pom\u011br nad p\u0159ibli\u017en\u011b 0,5 vy\u017eaduje pro\u0161et\u0159en\u00ed. N\u00e1hl\u00e9 zm\u011bny vzoru jsou stejn\u011b podez\u0159el\u00e9.<\/li>\n<li><strong>Spektr\u00e1ln\u00ed anal\u00fdza:<\/strong> routine <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/fft\/\">Rychl\u00e1 Fourierova transformace (FFT)<\/a> m\u011b\u0159en\u00ed porovn\u00e1van\u00e1 s historick\u00fdmi <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/baseline\/\">z\u00e1kladn\u00ed linie<\/a>, odhal\u00ed vznik nebo r\u016fst vrcholu 2\u00d7.<\/li>\n<li><strong>P\u0159echodov\u00e1 anal\u00fdza:<\/strong> <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/waterfall-plot\/\">vodop\u00e1dov\u00e9 diagramy<\/a> a Bodeho diagramy z rozb\u011bhu a dob\u011bhu odhal\u00ed neobvykl\u00e9 chov\u00e1n\u00ed p\u0159i pr\u016fchodech kritick\u00fdmi ot\u00e1\u010dkami.<\/li>\n<\/ul>\n<p>Zachycen\u00ed amplitudy a f\u00e1ze slo\u017eek 1\u00d7 a 2\u00d7 je p\u0159esn\u011b to m\u011b\u0159en\u00ed, kter\u00e9 p\u0159enosn\u00fd dvoukan\u00e1lov\u00fd analyz\u00e1tor d\u011bl\u00e1 rutinn\u00ed z\u00e1le\u017eitost\u00ed. S f\u00e1zov\u011b referen\u010dn\u00edm p\u0159\u00edstrojem, jako je <a href=\"https:\/\/vibromera.eu\/cs\/produkt\/balanset-1\/\">Balanset-1A<\/a>, m\u016f\u017ee technik zaznamen\u00e1vat vektory 1\u00d7 a 2\u00d7 na lo\u017eisk\u00e1ch b\u011bhem norm\u00e1ln\u00edho provozu a p\u0159i ka\u017ed\u00e9m dob\u011bhu, \u010d\u00edm\u017e buduje trend, kter\u00fd rozli\u0161uje ne\u0161kodnou slo\u017eku 2\u00d7 od t\u00e9, kter\u00e1 postupn\u011b roste &mdash; rozd\u00edl mezi pl\u00e1novan\u00fdm odstaven\u00edm a nepl\u00e1novanou hav\u00e1ri\u00ed.<\/p>\n<h3>Metody bez m\u011b\u0159en\u00ed vibrac\u00ed<\/h3>\n<p>Podez\u0159el\u00fd trend vibrac\u00ed by m\u011bl b\u00fdt v\u017edy potvrzen p\u0159\u00edmou <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/non-destructive-testing\/\">nedestruktivn\u00ed zkou\u0161en\u00ed<\/a>:<\/p>\n<ul>\n<li><strong>Kontrola magnetick\u00fdch \u010d\u00e1stic (MPI):<\/strong> nach\u00e1z\u00ed povrchov\u00e9 a p\u0159\u00edpovrchov\u00e9 trhliny s vysokou spolehlivost\u00ed na p\u0159\u00edstupn\u00fdch feromagnetick\u00fdch h\u0159\u00eddel\u00edch; standardn\u00ed metoda p\u0159i pravideln\u00fdch inspek\u010dn\u00edch odst\u00e1vk\u00e1ch.<\/li>\n<li><strong>Ultrazvukov\u00e1 zkou\u0161ka (UT):<\/strong> detekuje vnit\u0159n\u00ed i povrchov\u00e9 trhliny a dok\u00e1\u017ee je odhalit je\u0161t\u011b p\u0159ed t\u00edm, ne\u017e se projev\u00ed jak\u00e9koli vibra\u010dn\u00ed p\u0159\u00edznaky; vy\u017eaduje specializovan\u00e9 vybaven\u00ed a vy\u0161kolen\u00fd person\u00e1l a je metodou volby pro kritick\u00e9 h\u0159\u00eddele.<\/li>\n<li><strong>Kapil\u00e1rn\u00ed zkou\u0161ka:<\/strong> jednoduch\u00e1 metoda pro detekci povrchov\u00fdch trhlin vy\u017eaduj\u00edc\u00ed \u010di\u0161t\u011bn\u00ed a p\u0159\u00edpravu povrchu; vhodn\u00e1 pro p\u0159\u00edstupn\u00e1 m\u00edsta b\u011bhem odst\u00e1vky.<\/li>\n<li><strong>V\u00ed\u0159ivoproudov\u00e1 zkou\u0161ka:<\/strong> bezkontaktn\u00ed detekce povrchov\u00fdch trhlin vhodn\u00e1 pro automatizovanou inspekci; funguje na magnetick\u00fdch i nemagnetick\u00fdch materi\u00e1lech.<\/li>\n<\/ul>\n<h2>5. Reakce a n\u00e1pravn\u00e1 opat\u0159en\u00ed<\/h2>\n<h3>Okam\u017eit\u00e1 opat\u0159en\u00ed p\u0159i zji\u0161t\u011bn\u00ed z\u00e1vady<\/h3>\n<ol>\n<li><strong>Zv\u00fd\u0161it frekvenci monitorov\u00e1n\u00ed:<\/strong> p\u0159ejd\u011bte z m\u011bs\u00ed\u010dn\u00edch na t\u00fddenn\u00ed nebo denn\u00ed intervaly.<\/li>\n<li><strong>Sn\u00ed\u017een\u00ed vibra\u010dn\u00ed intenzity b\u011bhem provozu:<\/strong> sn\u00ed\u017eit ot\u00e1\u010dky nebo zat\u00ed\u017een\u00ed, pokud je to mo\u017en\u00e9.<\/li>\n<li><strong>Napl\u00e1novat odstaven\u00ed:<\/strong> Napl\u00e1nujte opravu nebo v\u00fdm\u011bnu p\u0159i nejbli\u017e\u0161\u00ed bezpe\u010dn\u00e9 p\u0159\u00edle\u017eitosti<\/li>\n<li><strong>Prove\u010fte NDE:<\/strong> p\u0159\u00edmo potvr\u010fte p\u0159\u00edtomnost trhliny&#8217; a zhodno\u0165te jej\u00ed z\u00e1va\u017enost.<\/li>\n<li><strong>Hodnocen\u00ed rizik:<\/strong> form\u00e1ln\u011b rozhodn\u011bte, zda je dal\u0161\u00ed provoz bezpe\u010dn\u00fd.<\/li>\n<\/ol>\n<h3>Dlouhodob\u00e1 \u0159e\u0161en\u00ed<\/h3>\n<ul>\n<li><strong>V\u00fdm\u011bna h\u0159\u00eddele:<\/strong> nejspolehliv\u011bj\u0161\u00ed n\u00e1prava u potvrzen\u00e9 trhliny.<\/li>\n<li><strong>Oprava (v omezen\u00fdch p\u0159\u00edpadech):<\/strong> n\u011bkter\u00e9 trhliny lze obrobit a doplnit nava\u0159en\u00edm materi\u00e1lu, ale pouze po odborn\u00e9m posouzen\u00ed.<\/li>\n<li><strong>Anal\u00fdza p\u0159\u00ed\u010din:<\/strong> zjist\u011bte, pro\u010d trhlina vznikla, aby se neopakovala.<\/li>\n<li><strong>Konstruk\u010dn\u00ed \u00fapravy:<\/strong> odstra\u0148te koncentrace nap\u011bt\u00ed, zlep\u0161ete v\u00fdb\u011br materi\u00e1lu nebo zm\u011b\u0148te provozn\u00ed re\u017eim.<\/li>\n<\/ul>\n<h2>6. Strategie prevence<\/h2>\n<h3>F\u00e1ze n\u00e1vrhu<\/h3>\n<ul>\n<li>Odstra\u0148te ostr\u00e9 rohy a koncentrace nap\u011bt\u00ed.<\/li>\n<li>Pou\u017e\u00edvejte velkorys\u00e9 polom\u011bry zaoblen\u00ed na p\u0159echodech pr\u016fm\u011br\u016f.<\/li>\n<li>Volte materi\u00e1ly odpov\u00eddaj\u00edc\u00ed \u00farovni nap\u011bt\u00ed a provozn\u00edmu prost\u0159ed\u00ed.<\/li>\n<li>Prov\u00e1d\u011bjte anal\u00fdzu nap\u011bt\u00ed metodou kone\u010dn\u00fdch prvk\u016f u kritick\u00fdch geometri\u00ed.<\/li>\n<li>Aplikujte povrchov\u00e9 \u00fapravy, jako je kuli\u010dkov\u00e1n\u00ed nebo nitridov\u00e1n\u00ed, pro zv\u00fd\u0161en\u00ed odolnosti proti \u00fanav\u011b.<\/li>\n<\/ul>\n<h3>Provozn\u00ed f\u00e1ze<\/h3>\n<ul>\n<li>Udr\u017eujte dobr\u00e9 <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/balance-quality\/\">kvalita vyv\u00e1\u017een\u00ed<\/a> aby se minimalizovalo cyklick\u00e9 nam\u00e1h\u00e1n\u00ed v ohybu.<\/li>\n<li>Zajist\u011bte p\u0159esn\u00e9 ustaven\u00ed.<\/li>\n<li>Vyvarujte se trval\u00e9ho provozu p\u0159i kritick\u00fdch rychlostech.<\/li>\n<li>Zabra\u0148te ud\u00e1lostem p\u0159ekro\u010den\u00ed rychlosti.<\/li>\n<li>Kontrolujte tepeln\u00e9 nap\u011bt\u00ed spr\u00e1vn\u00fdmi postupy p\u0159i naj\u00ed\u017ed\u011bn\u00ed a odstavov\u00e1n\u00ed.<\/li>\n<\/ul>\n<h3>F\u00e1ze \u00fadr\u017eby<\/h3>\n<ul>\n<li>Prov\u00e1d\u011bjte pravideln\u00e9 inspekce s vyu\u017eit\u00edm vhodn\u00fdch metod nedestruktivn\u00edho zkou\u0161en\u00ed.<\/li>\n<li>Zave\u010fte program monitorov\u00e1n\u00ed vibrac\u00ed <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/trending\/\">sledov\u00e1n\u00ed trend\u016f<\/a> pro zachycen\u00ed v\u010dasn\u00fdch p\u0159\u00edznak\u016f.<\/li>\n<li>Pravideln\u011b vyva\u017eujte, aby \u00fanavov\u00e1 nap\u011bt\u00ed z\u016fstala n\u00edzk\u00e1 \u2014 ter\u00e9nn\u00ed vyva\u017eov\u00e1n\u00ed <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/vyrovnavani-poli\/\">vyva\u017eov\u00e1n\u00ed na m\u00edst\u011b<\/a> umo\u017e\u0148uje prov\u00e9st tuto operaci prakticky bez demont\u00e1\u017ee rotoru.<\/li>\n<li>Udr\u017eujte ochranu proti korozi a povrchov\u00e9 n\u00e1t\u011bry.<\/li>\n<\/ul>\n<p>Trhliny v h\u0159\u00eddel\u00edch p\u0159edstavuj\u00ed jednu z nejz\u00e1va\u017en\u011bj\u0161\u00edch poruchov\u00fdch forem u rota\u010dn\u00edch stroj\u016f, kde d\u016fsledek p\u0159ehl\u00e9dnut\u00ed se m\u011b\u0159\u00ed v zni\u010den\u00e9m majetku a ohro\u017een\u00fdch lidech. \u00da\u010dinn\u00e1 je kombinace: monitorov\u00e1n\u00ed vibrac\u00ed pro v\u010dasn\u00e9 zachycen\u00ed charakteristick\u00e9ho sign\u00e1lu na 2\u00d7 ot\u00e1\u010dkov\u00e9 frekvenci a pravideln\u00e9 nedestruktivn\u00ed zkou\u0161en\u00ed k potvrzen\u00ed a zm\u011b\u0159en\u00ed toho, na co vibrace pouze poukazuj\u00ed. Spole\u010dn\u011b umo\u017e\u0148uj\u00ed pl\u00e1novanou, \u0159\u00edzenou \u00fadr\u017ebu \u2014 a zabr\u00e1n\u00ed tomu, aby se tich\u00e1 vlasov\u00e1 trhlina prom\u011bnila v n\u00e1hl\u00fd, prudk\u00fd lom.<\/p>\n<hr>\n<p><a href=\"https:\/\/vibromera.eu\/cs\/glossary\/\">\u2190 Zp\u011bt na hlavn\u00ed index<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Seznamte se s prasklinami na h\u0159\u00eddel\u00edch rota\u010dn\u00edch stroj\u016f, jejich p\u0159\u00ed\u010dinami, charakteristick\u00fdmi vibra\u010dn\u00edmi podpisy v\u010detn\u011b vibrac\u00ed komponent 2X a kritick\u00fdmi metodami detekce, kter\u00e9 zabra\u0148uj\u00ed katastrof\u00e1ln\u00edmu selh\u00e1n\u00ed.<\/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\/cs\/wp-json\/wp\/v2\/glossary\/234","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vibromera.eu\/cs\/wp-json\/wp\/v2\/glossary"}],"about":[{"href":"https:\/\/vibromera.eu\/cs\/wp-json\/wp\/v2\/types\/glossary"}],"version-history":[{"count":1,"href":"https:\/\/vibromera.eu\/cs\/wp-json\/wp\/v2\/glossary\/234\/revisions"}],"predecessor-version":[{"id":101407,"href":"https:\/\/vibromera.eu\/cs\/wp-json\/wp\/v2\/glossary\/234\/revisions\/101407"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/cs\/wp-json\/wp\/v2\/media?parent=234"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/cs\/wp-json\/wp\/v2\/categories?post=234"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/cs\/wp-json\/wp\/v2\/tags?post=234"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}