{"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\/cs\/glossary\/shaft-bow\/","title":{"rendered":"Co je to prohnut\u00ed h\u0159\u00eddele? P\u0159\u00ed\u010diny, detekce a n\u00e1prava"},"content":{"rendered":"<h1>Pochopen\u00ed prohnut\u00ed h\u0159\u00eddele v rota\u010dn\u00edch stroj\u00edch<\/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\/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=\"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\/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=\"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\/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=\"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\/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=\"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\/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=\"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\/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=\"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\/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=\"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\/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=\"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\/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=\"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\/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=\"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\/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=\"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\/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=\"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\/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=\"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\/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=\"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><strong>Prohnut\u00ed h\u0159\u00eddele<\/strong> (tak\u00e9 naz\u00fdvan\u00e9 oh\u00fdb\u00e1n\u00ed h\u0159\u00eddele, prohnut\u00ed rotoru nebo jednodu\u0161e &#8220;prohnut\u00ed&#8221;) je stav, kdy <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/rotor\/\">rotor<\/a> h\u0159\u00eddel vykazuje trval\u00e9 nebo polotrval\u00e9 zak\u0159iven\u00ed, v d\u016fsledku \u010deho\u017e se jej\u00ed geometrick\u00e1 osa odchyluje od p\u0159\u00edmky mezi lo\u017eiskov\u00fdmi \u010depy. Na rozd\u00edl od do\u010dasn\u00e9ho <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/run-out\/\">h\u00e1zen\u00ed<\/a> Zkroucen\u00ed h\u0159\u00eddele, zp\u016fsoben\u00e9 uvoln\u011bnou sou\u010d\u00e1st\u00ed nebo excentrick\u00fdm um\u00edst\u011bn\u00edm, p\u0159edstavuje skute\u010dnou deformaci samotn\u00e9ho materi\u00e1lu h\u0159\u00eddele. To vede k <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/vibration\/\">vibrace<\/a> p\u0159\u00edznaky, kter\u00e9 se povrchn\u011b podobaj\u00ed <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/unbalance\/\">nevyv\u00e1\u017eenost<\/a> \u2014 siln\u00fd, synchronn\u00ed pohyb, kter\u00fd se opakuje jednou za ot\u00e1\u010dku \u2014 p\u0159esto jej nelze vy\u0159e\u0161it b\u011b\u017en\u00fdmi <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/vyvazovani\/\">vyva\u017eov\u00e1n\u00ed<\/a>. Pr\u00e1v\u011b v\u010dasn\u00e9 rozpozn\u00e1n\u00ed tohoto rozd\u00edlu je t\u00edm, co odli\u0161uje rychlou opravu od n\u011bkolikadenn\u00edho marn\u00e9ho vyva\u017eov\u00e1n\u00ed h\u0159\u00eddele, kter\u00e9 by nikdy nebylo \u00fasp\u011b\u0161n\u00e9.<\/p>\n<h2>1. Definice: Co je to vlastn\u011b prohnut\u00ed h\u0159\u00eddele<\/h2>\n<p>U zcela nepo\u0161kozen\u00e9ho rotoru jsou osa hmotnosti i geometrick\u00e1 osa rovn\u00e9 a t\u00e9m\u011b\u0159 se kryj\u00ed. Prohnut\u00ed h\u0159\u00eddele tento stav naru\u0161uje t\u00edm, \u017ee oh\u00fdb\u00e1 geometrickou osu do oblouku. Prohnut\u00ed m\u016f\u017ee b\u00fdt mal\u00e9 \u2013 u vysokorychlostn\u00edho stroje sta\u010d\u00ed i n\u011bkolik setin milimetru \u2013, ale proto\u017ee prohnut\u00e1 osov\u00e1 \u010d\u00e1ra ji\u017e neproch\u00e1z\u00ed st\u0159edy lo\u017eisek, je rotor nucen ot\u00e1\u010det se kolem osy, kolem kter\u00e9 by se p\u0159irozen\u011b ot\u00e1\u010det necht\u011bl.<\/p>\n<p>Stoj\u00ed za to rozli\u0161it prohnut\u00ed h\u0159\u00eddele od jeho bl\u00edzk\u00fdch p\u0159\u00edbuzn\u00fdch probl\u00e9m\u016f. A <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/bent-shaft\/\">ohnut\u00e1 h\u0159\u00eddel<\/a> jde v podstat\u011b o stejnou z\u00e1vadu popsanou z mechanick\u00e9ho hlediska, zat\u00edmco <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/eccentricity\/\">excentricita<\/a> popisuje rotor, jeho\u017e t\u011b\u017ei\u0161t\u011b je posunuto, ani\u017e by byla samotn\u00e1 h\u0159\u00eddel zak\u0159iven\u00e1. Spr\u00e1vn\u011b <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/run-out\/\">h\u00e1zen\u00ed<\/a> m\u016f\u017ee b\u00fdt mechanick\u00e9ho p\u016fvodu (skute\u010dn\u00e1 geometrick\u00e1 odchylka) nebo elektrick\u00e9ho p\u016fvodu (nespr\u00e1vn\u00fd \u00fadaj z <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/proximity-probe\/\">bezdotykov\u00e1 sonda<\/a> (nap\u0159. p\u0159i m\u011b\u0159en\u00ed magnetick\u00e9 odchylky). Prohnut\u00ed h\u0159\u00eddele p\u0159edstavuje konkr\u00e9tn\u011b geometrickou deformaci t\u011bla h\u0159\u00eddele, a proto ji \u017e\u00e1dn\u00e9 p\u0159idan\u00e9 z\u00e1va\u017e\u00ed jinde nem\u016f\u017ee skute\u010dn\u011b &#8222;vyv\u00e1\u017eit&#8220;.<\/p>\n<h2>2. Druhy prohnut\u00ed h\u0159\u00eddele<\/h2>\n<p>Ohnut\u00ed h\u0159\u00eddele se nejl\u00e9pe klasifikuje podle p\u0159\u00ed\u010diny a d\u00e9lky trv\u00e1n\u00ed, proto\u017ee ka\u017ed\u00fd typ vy\u017eaduje odli\u0161n\u00fd postup.<\/p>\n<h3>2.1 Trval\u00e9 mechanick\u00e9 prohnut\u00ed<\/h3>\n<p>Jedn\u00e1 se o plastickou (trvalou) deformaci materi\u00e1lu h\u0159\u00eddele \u2013 kov se poddal a ji\u017e se nevr\u00e1t\u00ed do p\u016fvodn\u00edho stavu. Mezi b\u011b\u017en\u00e9 p\u0159\u00ed\u010diny pat\u0159\u00ed:<\/p>\n<ul>\n<li>Mechanick\u00e9 p\u0159et\u00ed\u017een\u00ed nebo n\u00e1raz<\/li>\n<li>Nespr\u00e1vn\u00e9 zved\u00e1n\u00ed nebo manipulace b\u011bhem \u00fadr\u017eby<\/li>\n<li>Spadnut\u00ed rotoru<\/li>\n<li>Nadm\u011brn\u00e9 ohybov\u00e9 nam\u00e1h\u00e1n\u00ed b\u011bhem provozu<\/li>\n<li>V\u00fdrobn\u00ed vady nebo nespr\u00e1vn\u00e9 tepeln\u00e9 zpracov\u00e1n\u00ed<\/li>\n<\/ul>\n<p>Jakmile h\u0159\u00eddel prohne, z\u016fst\u00e1v\u00e1 ohnut\u00fd i v klidu a i pot\u00e9, co bylo odstran\u011bno ve\u0161ker\u00e9 vn\u011bj\u0161\u00ed zat\u00ed\u017een\u00ed. Pr\u00e1v\u011b tento znak odli\u0161uje trval\u00e9 prohnut\u00ed od tepeln\u00e9ho: je patrn\u00e9 za studena a je patrn\u00e9 i na zku\u0161ebn\u00edm stole.<\/p>\n<h3>2.2 Tepeln\u00e9 prohnut\u00ed (p\u0159echodov\u00fd stav)<\/h3>\n<p>Tak\u00e9 se naz\u00fdv\u00e1 <strong>tepeln\u00e9 prohnut\u00ed h\u0159\u00eddele<\/strong> nebo <strong>tepeln\u00e9 prohnut\u00ed<\/strong>Jedn\u00e1 se o do\u010dasn\u00fd jev zp\u016fsoben\u00fd nerovnom\u011brn\u00fdm zah\u0159\u00edv\u00e1n\u00edm po obvodu h\u0159\u00eddele. Teplej\u0161\u00ed strana se roztahuje v\u00edce ne\u017e chladn\u011bj\u0161\u00ed strana, co\u017e zp\u016fsobuje prohnut\u00ed h\u0159\u00eddele tak, \u017ee teplej\u0161\u00ed strana tvo\u0159\u00ed konvexn\u00ed (vn\u011bj\u0161\u00ed) stranu. Mezi typick\u00e9 p\u0159\u00ed\u010diny pat\u0159\u00ed:<\/p>\n<ul>\n<li>Asymetrick\u00e9 zdroje tepla (hork\u00e1 procesn\u00ed kapalina na jedn\u00e9 stran\u011b, chladic\u00ed vzduch na druh\u00e9 stran\u011b)<\/li>\n<li>Zah\u0159\u00edv\u00e1n\u00ed h\u0159\u00eddele t\u0159en\u00edm v lo\u017eisku<\/li>\n<li>T\u0159en\u00ed rotoru zp\u016fsobuj\u00edc\u00ed lok\u00e1ln\u00ed zah\u0159\u00edv\u00e1n\u00ed<\/li>\n<li>Sol\u00e1rn\u00ed oh\u0159ev venkovn\u00edho za\u0159\u00edzen\u00ed<\/li>\n<li>Nespr\u00e1vn\u00e9 postupy zah\u0159\u00edv\u00e1n\u00ed velk\u00fdch turb\u00edn<\/li>\n<\/ul>\n<p>Tepeln\u00e9 prohnut\u00ed se obvykle vytrat\u00ed, jakmile se h\u0159\u00eddel rovnom\u011brn\u011b ochlad\u00ed nebo dos\u00e1hne tepeln\u00e9 rovnov\u00e1hy. Podrobn\u00fd popis cel\u00e9ho mechanismu, prevence a cvi\u010den\u00ed s oto\u010dn\u00fdm mechanismem najdete v \u010d\u00e1sti <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/thermal-bow\/\">tepeln\u00e9 prohnut\u00ed h\u0159\u00eddele<\/a>. Je v\u0161ak d\u016fle\u017eit\u00e9 m\u00edt na pam\u011bti, \u017ee opakovan\u00e9 cykly tepeln\u00e9ho proh\u00fdb\u00e1n\u00ed mohou nakonec zp\u016fsobit, \u017ee h\u0159\u00eddel p\u0159ekro\u010d\u00ed mez kluzu a dojde k trval\u00e9 deformaci \u2013 &#8220;do\u010dasn\u00fd&#8221; probl\u00e9m, kter\u00fd se dostate\u010dn\u011b dlouho ignoruje, se tak stane trval\u00fdm.<\/p>\n<h3>2.3 Prohnut\u00ed ze zbytkov\u00e9ho nap\u011bt\u00ed<\/h3>\n<p>Vnit\u0159n\u00ed zbytkov\u00e9 nap\u011bt\u00ed vznikl\u00e9 sva\u0159ov\u00e1n\u00edm, tepeln\u00fdm zpracov\u00e1n\u00edm nebo obr\u00e1b\u011bn\u00edm m\u016f\u017ee v pr\u016fb\u011bhu \u010dasu zp\u016fsobit postupn\u00e9 proh\u00fdb\u00e1n\u00ed h\u0159\u00eddele, zejm\u00e9na pokud provozn\u00ed teploty nebo zat\u00ed\u017een\u00ed umo\u017e\u0148uj\u00ed uvoln\u011bn\u00ed t\u011bchto zachycen\u00fdch nap\u011bt\u00ed. K takov\u00e9mu proh\u00fdb\u00e1n\u00ed m\u016f\u017ee doj\u00edt a\u017e m\u011bs\u00edce \u010di roky po uveden\u00ed do provozu, a proto se u kritick\u00fdch rotor\u016f vyplat\u00ed prov\u00e1d\u011bt pravideln\u00e9 kontroly rovinnosti.<\/p>\n<h2>3. P\u0159\u00ed\u010diny prohnut\u00ed h\u0159\u00eddele<\/h2>\n<p>Pochopen\u00ed p\u0159\u00ed\u010diny probl\u00e9mu nejen zabr\u00e1n\u00ed jeho opakov\u00e1n\u00ed, ale tak\u00e9 uk\u00e1\u017ee na spr\u00e1vn\u00e9 \u0159e\u0161en\u00ed. Tyto faktory lze rozd\u011blit do t\u0159\u00ed skupin.<\/p>\n<h3>3.1 Mechanick\u00e9 p\u0159\u00ed\u010diny<\/h3>\n<ul>\n<li><strong>P\u0159et\u00ed\u017een\u00ed:<\/strong> provoz p\u0159i zat\u00ed\u017een\u00ed p\u0159esahuj\u00edc\u00edm konstruk\u010dn\u00ed limity.<\/li>\n<li><strong>Nespr\u00e1vn\u00e9 skladov\u00e1n\u00ed:<\/strong> skladov\u00e1n\u00ed h\u0159\u00eddel\u00ed v horizont\u00e1ln\u00ed poloze bez \u0159\u00e1dn\u00e9 podpory, co\u017e v pr\u016fb\u011bhu \u010dasu vede k proh\u00fdb\u00e1n\u00ed samovoln\u00fdm poklesem \u2013 zejm\u00e9na u dlouh\u00fdch, \u0161t\u00edhl\u00fdch rotor\u016f, kter\u00e9 jsou po cel\u00e9 m\u011bs\u00edce op\u0159eny pouze o dv\u011b koncov\u00e9 podp\u011bry.<\/li>\n<li><strong>Nespr\u00e1vn\u00e9 zach\u00e1zen\u00ed:<\/strong> Zved\u00e1n\u00ed za h\u0159\u00eddel m\u00edsto ur\u010den\u00fdch zvedac\u00edch bod\u016f<\/li>\n<li><strong>Nehoda nebo n\u00e1raz:<\/strong> p\u00e1d, n\u00e1raz nebo po\u0161kozen\u00ed ciz\u00edm p\u0159edm\u011btem.<\/li>\n<li><strong>Zad\u0159en\u00ed lo\u017eiska:<\/strong> Zad\u0159en\u00e9 lo\u017eisko m\u016f\u017ee zp\u016fsobit ohnut\u00ed h\u0159\u00eddele vlivem hnac\u00edho momentu<\/li>\n<\/ul>\n<h3>3.2 Tepeln\u00e9 p\u0159\u00ed\u010diny<\/h3>\n<ul>\n<li><strong>Nerovnom\u011brn\u00e9 zah\u0159\u00edv\u00e1n\u00ed:<\/strong> Nerovnom\u011brn\u00e9 rozlo\u017een\u00ed teploty po obvodu h\u0159\u00eddele<\/li>\n<li><strong>N\u00e1hl\u00e9 zm\u011bny teploty:<\/strong> teplotn\u00ed \u0161ok p\u0159i spou\u0161t\u011bn\u00ed nebo vyp\u00edn\u00e1n\u00ed.<\/li>\n<li><strong>Hot spots:<\/strong> Lokalizovan\u00e9 zah\u0159\u00edv\u00e1n\u00ed v d\u016fsledku t\u0159en\u00ed, od\u0159en\u00ed nebo procesn\u00edch podm\u00ednek<\/li>\n<li><strong>Nedostate\u010dn\u00e9 p\u0159edeh\u0159\u00edv\u00e1n\u00ed:<\/strong> P\u0159\u00edli\u0161 rychl\u00e9 spou\u0161t\u011bn\u00ed studen\u00fdch turb\u00edn nebo velk\u00fdch stroj\u016f<\/li>\n<li><strong>Postup p\u0159i vyp\u00edn\u00e1n\u00ed:<\/strong> kdy se hork\u00fd h\u0159\u00eddel zastav\u00ed p\u0159ed ochlazen\u00edm (tepeln\u00e9 prohnut\u00ed).<\/li>\n<\/ul>\n<h3>3.3 P\u0159\u00ed\u010diny souvisej\u00edc\u00ed s materi\u00e1lem a v\u00fdrobou<\/h3>\n<ul>\n<li><strong>\u0160patn\u00e1 kvalita materi\u00e1lu:<\/strong> vm\u011bstky, dutiny nebo nerovnom\u011brnosti materi\u00e1lu.<\/li>\n<li><strong>Nespr\u00e1vn\u00e9 tepeln\u00e9 zpracov\u00e1n\u00ed:<\/strong> zbytkov\u00e1 nap\u011bt\u00ed vznikl\u00e1 p\u0159i kalen\u00ed nebo popou\u0161t\u011bn\u00ed.<\/li>\n<li><strong>Deformace p\u0159i sva\u0159ov\u00e1n\u00ed:<\/strong> asymetrick\u00e9 sva\u0159ov\u00e1n\u00ed, kter\u00e9 zp\u016fsobuje vznik zbytkov\u00fdch pnut\u00ed.<\/li>\n<li><strong>Obr\u00e1b\u011bc\u00ed nap\u011bt\u00ed:<\/strong> nap\u011bt\u00ed vznikl\u00e1 p\u0159i v\u00fdrob\u011b, kter\u00e1 se b\u011bhem provozu uvol\u0148uj\u00ed.<\/li>\n<\/ul>\n<h2>4. Jak prohnut\u00ed h\u0159\u00eddele zp\u016fsobuje vibrace<\/h2>\n<p>Prohnut\u00e1 h\u0159\u00eddel vyvol\u00e1v\u00e1 vibrace prost\u0159ednictv\u00edm dvou odli\u0161n\u00fdch, ale vz\u00e1jemn\u011b spolupracuj\u00edc\u00edch mechanism\u016f.<\/p>\n<h3>4.1 Geometrick\u00e1 nevyv\u00e1\u017eenost<\/h3>\n<p>Kdy\u017e se zak\u0159iven\u00e1 h\u0159\u00eddel ot\u00e1\u010d\u00ed, jej\u00ed zak\u0159iven\u00e1 osa opisuje ku\u017eelovou nebo jinou ne kruhovou dr\u00e1hu. I kdy\u017e je rozlo\u017een\u00ed hmotnosti rotoru naprosto rovnom\u011brn\u00e9, zak\u0159iven\u00e1 geometrie se chov\u00e1 jako excentrick\u00e1 rotuj\u00edc\u00ed hmotnost: posouv\u00e1 t\u011b\u017ei\u0161t\u011b mimo osu ot\u00e1\u010den\u00ed a vytv\u00e1\u0159\u00ed <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/centrifugal-force\/\">odst\u0159ediv\u00e1 s\u00edla<\/a> kter\u00e1 roste s druhou mocninou rychlosti a vyvol\u00e1v\u00e1 siln\u00e9 vibrace o frekvenci 1\u00d7 p\u0159i <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/running-speed\/\">provozn\u00ed ot\u00e1\u010dky<\/a>. Pr\u00e1v\u011b proto se prohnut\u00ed tv\u00e1\u0159\u00ed jako nerovnov\u00e1ha ve spektru.<\/p>\n<h3>4.2 Momentov\u00e9 zat\u00ed\u017een\u00ed lo\u017eisek<\/h3>\n<p>Toto zak\u0159iven\u00ed tak\u00e9 vyvol\u00e1v\u00e1 statick\u00fd a rota\u010dn\u00ed ohybov\u00fd moment, kter\u00fd p\u016fsob\u00ed p\u0159\u00edmo na lo\u017eiska, co\u017e vede k kol\u00eds\u00e1n\u00ed zat\u00ed\u017een\u00ed lo\u017eisek a vibrac\u00edm lo\u017eiskov\u00fdch sedel. U v\u011bt\u0161\u00edch rotor\u016f pr\u00e1v\u011b toto momentov\u00e9 zat\u00ed\u017een\u00ed zp\u016fsobuje zrychlen\u00e9 opot\u0159eben\u00ed lo\u017eisek a v extr\u00e9mn\u00edch p\u0159\u00edpadech i kontakt mezi rotorem a pevn\u00fdmi t\u011bsn\u011bn\u00edmi. Siln\u011b prohnut\u00fd rotor, jeho\u017e prohnut\u00ed se nach\u00e1z\u00ed v bl\u00edzkosti <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/critical-speed\/\">kritick\u00e1 rychlost<\/a> m\u016f\u017ee p\u0159i rozb\u011bhu vyvolat zes\u00edlenou, n\u011bkdy a\u017e alarmuj\u00edc\u00ed reakci.<\/p>\n<h2>5. Zji\u0161\u0165ov\u00e1n\u00ed prohnut\u00ed h\u0159\u00eddele<\/h2>\n<p>Jeliko\u017e vibrace zp\u016fsoben\u00e9 ohybem a skute\u010dnou nevyv\u00e1\u017eenost\u00ed maj\u00ed stejn\u00fd charakteristick\u00fd sign\u00e1l 1\u00d7, je jejich rozli\u0161en\u00ed kl\u00ed\u010dov\u00fdm bodem diagnostiky. Nejv\u00fdrazn\u011bj\u0161\u00edm rozli\u0161ovac\u00edm znakem je chov\u00e1n\u00ed p\u0159i velmi n\u00edzk\u00fdch ot\u00e1\u010dk\u00e1ch a p\u0159i zm\u011bn\u00e1ch teploty.<\/p>\n<h3>5.1 Porovn\u00e1n\u00ed p\u0159\u00edznak\u016f: Zak\u0159iven\u00ed vs. nerovnov\u00e1ha<\/h3>\n<table border=\"1\" style=\"width:100%; border-collapse:collapse;\">\n<tr>\n<th>Charakteristika<\/th>\n<th>Nevyv\u00e1\u017eenost<\/th>\n<th>Prohnut\u00ed h\u0159\u00eddele<\/th>\n<\/tr>\n<tr>\n<td>Frekvence vibrac\u00ed<\/td>\n<td>1\u00d7 ot\u00e1\u010dkov\u00e1 frekvence<\/td>\n<td>1\u00d7 ot\u00e1\u010dkov\u00e1 frekvence<\/td>\n<\/tr>\n<tr>\n<td>F\u00e1zov\u00fd vztah<\/td>\n<td>Konstantn\u00ed, st\u00e1le stejn\u00e1<\/td>\n<td>M\u016f\u017ee se b\u011bhem zah\u0159\u00edv\u00e1n\u00ed zm\u011bnit<\/td>\n<\/tr>\n<tr>\n<td>Vibrace p\u0159i pomal\u00e9m ot\u00e1\u010den\u00ed<\/td>\n<td>P\u0159\u00edtomn\u00fd (\u00fam\u011brn\u00fd rychlosti\u00b2)<\/td>\n<td>P\u0159\u00edtomn\u00fd a \u010dasto v\u00fdznamn\u00fd i p\u0159i velmi n\u00edzk\u00e9 rychlosti<\/td>\n<\/tr>\n<tr>\n<td>Reakce na vyva\u017eov\u00e1n\u00ed<\/td>\n<td>Vibrace sn\u00ed\u017een\u00e9 spr\u00e1vn\u00fdm vyv\u00e1\u017een\u00edm<\/td>\n<td>Minim\u00e1ln\u00ed nebo \u017e\u00e1dn\u00e9 zlep\u0161en\u00ed; m\u016f\u017ee se zhor\u0161it<\/td>\n<\/tr>\n<tr>\n<td>Tepeln\u00e1 citlivost<\/td>\n<td>Relativn\u011b stabiln\u00ed s teplotou<\/td>\n<td>V\u00fdznamn\u00e9 zm\u011bny b\u011bhem zah\u0159\u00edv\u00e1n\u00ed\/ochlazov\u00e1n\u00ed<\/td>\n<\/tr>\n<tr>\n<td>M\u011b\u0159en\u00ed h\u00e1zen\u00ed<\/td>\n<td>N\u00edzk\u00e1 hodnota, kdy\u017e je rotor v klidu<\/td>\n<td>Vysok\u00e9 h\u00e1zen\u00ed i v klidu (permanentn\u00ed prohnut\u00ed)<\/td>\n<\/tr>\n<\/table>\n<p>Nejv\u00fdrazn\u011bj\u0161\u00edm \u00fadajem je hodnota pomal\u00e9ho ot\u00e1\u010den\u00ed. S klesaj\u00edc\u00ed rychlost\u00ed se nevyv\u00e1\u017een\u00e1 s\u00edla bl\u00ed\u017e\u00ed nule, proto\u017ee se m\u011bn\u00ed \u00fam\u011brn\u011b s druhou mocninou ot\u00e1\u010dek; trval\u00e9 prohnut\u00ed, kter\u00e9 p\u0159edstavuje pevn\u00fd geometrick\u00fd posun, v\u0161ak i p\u0159i velmi n\u00edzk\u00e9 rychlosti vykazuje zna\u010dn\u00e9 excentrick\u00e9 vych\u00fdlen\u00ed a pohyb ve frekvenci 1\u00d7. Pr\u00e1v\u011b tento test rozhoduje o v\u00fdsledku.<\/p>\n<h3>5.2 Diagnostick\u00e9 testy<\/h3>\n<h4>5.2.1 M\u011b\u0159en\u00ed p\u0159i pomal\u00e9m ot\u00e1\u010den\u00ed<\/h4>\n<p>Ot\u00e1\u010dejte h\u0159\u00eddel\u00ed velmi pomalu \u2013 obvykle 5\u201310 % provozn\u00ed rychlosti \u2013 a prove\u010fte m\u011b\u0159en\u00ed <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/run-out\/\">h\u00e1zen\u00ed<\/a> with a <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/proximity-probe\/\">bezdotykov\u00e1 sonda<\/a> nebo m\u011b\u0159idlem s ru\u010di\u010dkou. Vysok\u00e9 excentrick\u00e9 vych\u00fdlen\u00ed p\u0159i pomal\u00e9m ot\u00e1\u010den\u00ed nazna\u010duje prohnut\u00ed h\u0159\u00eddele nebo mechanick\u00e9 excentrick\u00e9 vych\u00fdlen\u00ed sp\u00ed\u0161e ne\u017e nevyv\u00e1\u017eenost, jej\u00ed\u017e odst\u0159ediv\u00e1 s\u00edla je p\u0159i tak n\u00edzk\u00fdch ot\u00e1\u010dk\u00e1ch zanedbateln\u00e1. Vektor pomal\u00e9ho ot\u00e1\u010den\u00ed se rovn\u011b\u017e zaznamen\u00e1v\u00e1, aby mohl b\u00fdt ode\u010dten od \u00fadaj\u016f o provozn\u00edch vibrac\u00edch, \u010d\u00edm\u017e se odd\u011bl\u00ed skute\u010dn\u00e1 dynamick\u00e1 odezva od statick\u00e9 slo\u017eky zp\u016fsoben\u00e9 prohnut\u00edm.<\/p>\n<h4>5.2.2 F\u00e1zov\u00fd posun p\u0159i vyp\u00edn\u00e1n\u00ed<\/h4>\n<p>Sledujte vibrace <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/phase-angle\/\">f\u00e1zov\u00fd \u00fahel<\/a> jak se stroj zpomaluje. Skute\u010dn\u00e1 nevyv\u00e1\u017eenost m\u00e1 konstantn\u00ed hodnotu <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/phase\/\">f\u00e1ze<\/a> bez ohledu na ot\u00e1\u010dky (mimo rezonanci). H\u0159\u00eddel, u n\u00ed\u017e doch\u00e1z\u00ed k teplotn\u00edmu prohnut\u00ed, vykazuje tendenci k posunu f\u00e1ze p\u0159i ochlazov\u00e1n\u00ed rotoru, a p\u0159i spole\u010dn\u00e9m vynesen\u00ed amplitudy a f\u00e1ze do grafu <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/bode-plot\/\">Bodeho graf<\/a> nebo <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/polar-plot\/\">pol\u00e1rn\u00ed graf<\/a> d\u00edky tomu je rozd\u00edl mnohem srozumiteln\u011bj\u0161\u00ed ne\u017e pouh\u00e1 \u010d\u00edsla.<\/p>\n<h4>5.2.3 Zkou\u0161ka tepeln\u00e9ho prohnut\u00ed<\/h4>\n<p>Pokud m\u00e1te podez\u0159en\u00ed na tepeln\u00e9 prohnut\u00ed, sledujte vibrace b\u011bhem spou\u0161t\u011bn\u00ed a zah\u0159\u00edv\u00e1n\u00ed. Tepeln\u00e9 prohnut\u00ed se obvykle projevuje vibracemi <em>increasing<\/em> jak se stroj zah\u0159\u00edv\u00e1, a pot\u00e9 se hodnota ust\u00e1l\u00ed nebo klesne, jakmile je dosa\u017eeno tepeln\u00e9 rovnov\u00e1hy \u2013 co\u017e je p\u0159esn\u00fd opak poruchy, jej\u00ed\u017e rozsah roste v\u00fdhradn\u011b s rychlost\u00ed.<\/p>\n<h4>5.2.4 Kontrola h\u00e1zen\u00ed mimo stroj<\/h4>\n<p>Vyjm\u011bte rotor, podep\u0159ete jej na kl\u00ednov\u00fdch podlo\u017ek\u00e1ch nebo mezi hroty soustruhu a pomalu jej ot\u00e1\u010dejte, p\u0159i\u010dem\u017e m\u011b\u0159te radi\u00e1ln\u00ed h\u00e1zen\u00ed pomoc\u00ed \u010d\u00edseln\u00edkov\u00e9ho \u00fachylkom\u011bru. V\u00fdznamn\u00e9 excentrick\u00e9 vych\u00fdlen\u00ed \u2013 obvykle v\u011bt\u0161\u00ed ne\u017e 0,001 palce (25 \u00b5m) \u2013 potvrzuje trval\u00e9 prohnut\u00ed. Tato kontrola na pracovn\u00edm stole je definitivn\u00edm d\u016fkazem, proto\u017ee h\u0159\u00eddel, kter\u00e1 se na stroji jev\u00ed jako rovn\u00e1, ale na kl\u00ednov\u00fdch podlo\u017ek\u00e1ch je ohnut\u00e1, vypr\u00e1v\u00ed zcela jin\u00fd p\u0159\u00edb\u011bh ne\u017e h\u0159\u00eddel, kter\u00e1 je ohnut\u00e1 v obou p\u0159\u00edpadech.<\/p>\n<h4>5.2.5 Vizu\u00e1ln\u00ed kontrola<\/h4>\n<p>U dlouh\u00fdch h\u0159\u00eddel\u00ed lze prov\u00e9st zam\u011b\u0159en\u00ed pod\u00e9l cel\u00e9 d\u00e9lky h\u0159\u00eddele nebo pomoc\u00ed optick\u00fdch metod, jako jsou <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/laser-shaft-alignment\/\">laserov\u00e9 vyrovn\u00e1n\u00ed<\/a> P\u0159\u00edstroje mohou odhalit z\u0159eteln\u00e9 prohnut\u00ed, kter\u00e9 by pouh\u00fdm okem mohlo uniknout.<\/p>\n<h2>6. Metody korekce<\/h2>\n<p>Spr\u00e1vn\u00e1 oprava z\u00e1vis\u00ed na stupni a typu prohnut\u00ed. Neexistuje \u017e\u00e1dn\u00e9 univerz\u00e1ln\u00ed \u0159e\u0161en\u00ed, kter\u00e9 by vyhovovalo ve v\u0161ech p\u0159\u00edpadech.<\/p>\n<h3>6.1 Pro pevn\u00fd mechanick\u00fd oblouk<\/h3>\n<h4>6.1.1 Rovn\u00e1n\u00ed h\u0159\u00eddel\u00ed<\/h4>\n<p>U m\u00edrn\u00e9ho a\u017e st\u0159edn\u00edho prohnut\u00ed \u2013 obvykle do 0,005 palce (125 \u00b5m) \u2013 lze h\u0159\u00eddel n\u011bkdy narovnat za studena nebo za tepla pomoc\u00ed hydraulick\u00fdch lis\u016f. H\u0159\u00eddel se podep\u0159e a opatrn\u011b se p\u0159edoh\u00fdb\u00e1 tak, aby se plasticky deformovala zp\u011bt do rovn\u00e9ho stavu. Tento proces vy\u017eaduje specializovan\u00e9 vybaven\u00ed, zku\u0161en\u00e9 techniky a trp\u011blivost, proto\u017ee p\u0159\u00edli\u0161n\u00e1 korekce vede pouze k prohnut\u00ed v opa\u010dn\u00e9m sm\u011bru.<\/p>\n<h4>6.1.2 Odleh\u010den\u00ed tepeln\u00e9ho nap\u011bt\u00ed<\/h4>\n<p>Tepeln\u00e9 zpracov\u00e1n\u00ed h\u0159\u00eddele za \u00fa\u010delem uvoln\u011bn\u00ed zbytkov\u00fdch pnut\u00ed m\u016f\u017ee omezit nebo zcela odstranit prohnut\u00ed zp\u016fsoben\u00e9 pnut\u00ed vznikl\u00fdm p\u0159i v\u00fdrob\u011b nebo sva\u0159ov\u00e1n\u00ed. To vy\u017eaduje vhodn\u00e9 pecn\u00ed vybaven\u00ed a p\u0159\u00edsnou kontrolu procesu, aby nedo\u0161lo ke vzniku nov\u00fdch deformac\u00ed.<\/p>\n<h4>6.1.3 V\u00fdm\u011bna h\u0159\u00eddele<\/h4>\n<p>V p\u0159\u00edpad\u011b siln\u00e9ho prohnut\u00ed h\u0159\u00eddele nebo p\u0159i n\u00e1ro\u010dn\u00e9m provozu je v\u00fdm\u011bna \u010dasto nejspolehliv\u011bj\u0161\u00edm \u0159e\u0161en\u00edm. N\u00e1klady na novou h\u0159\u00eddel je t\u0159eba zv\u00e1\u017eit s ohledem na prostoje a re\u00e1ln\u00e9 riziko, \u017ee se pokus o narovn\u00e1n\u00ed nezda\u0159\u00ed nebo \u017ee se h\u0159\u00eddel \u010dasem op\u011bt prohne.<\/p>\n<h4>6.1.4 \u201eVyva\u017eov\u00e1n\u00ed kolem ohybu\u201c<\/h4>\n<p>V n\u011bkter\u00fdch p\u0159\u00edpadech \u2013 zejm\u00e9na u velk\u00fdch turb\u00edn \u2013 <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/correction-weight\/\">korek\u010dn\u00ed z\u00e1va\u017e\u00ed<\/a> lze vypo\u010d\u00edtat a p\u0159izp\u016fsobit tak, aby se vyrovnalo <em>effect<\/em> p\u0159i provozn\u00ed rychlosti. To h\u0159\u00eddel nevyrovn\u00e1; pouze vyru\u0161\u00ed s\u00edlu 1\u00d7, kterou ohyb vyv\u00edj\u00ed. Jedn\u00e1 se o omezen\u00e9, obvykle do\u010dasn\u00e9 opat\u0159en\u00ed, po kter\u00e9m z\u016fst\u00e1v\u00e1 rotor, jeho\u017e <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/residual-unbalance\/\">zbytkov\u00e1 nevyv\u00e1\u017eenost<\/a> vypad\u00e1 p\u0159ijateln\u011b pouze p\u0159i jedn\u00e9 konkr\u00e9tn\u00ed rychlosti a teplot\u011b.<\/p>\n<h3>6.2 Pro tepeln\u00e9 prohnut\u00ed<\/h3>\n<h4>6.2.1 Zm\u011bny provozn\u00edch postup\u016f<\/h4>\n<ul>\n<li>Zave\u010fte postupn\u00e9 a pomal\u00e9 zah\u0159\u00edvac\u00ed postupy.<\/li>\n<li>B\u011bhem odstaven\u00ed udr\u017eujte nep\u0159etr\u017eit\u00fd chod ot\u00e1\u010den\u00ed p\u0159evodov\u00e9ho \u00fastroj\u00ed, aby se zabr\u00e1nilo tepeln\u00e9mu poklesu.<\/li>\n<li>Pe\u010dliv\u011bji regulujte p\u0159\u00edvod p\u00e1ry nebo teplotu procesn\u00edch kapalin<\/li>\n<li>Zajist\u011bte rovnom\u011brn\u00e9 zah\u0159\u00edv\u00e1n\u00ed a ochlazov\u00e1n\u00ed.<\/li>\n<\/ul>\n<h4>6.2.2 \u00dapravy konstrukce<\/h4>\n<ul>\n<li>P\u0159idejte izolaci, abyste sn\u00ed\u017eili teplotn\u00ed rozd\u00edly.<\/li>\n<li>Namontujte vyh\u0159\u00edvac\u00ed pl\u00e1\u0161t\u011b pro rovnom\u011brn\u00e9 zah\u0159\u00e1t\u00ed.<\/li>\n<li>Vylep\u0161ete chladic\u00ed syst\u00e9m tak, aby se rovnom\u011brn\u011b rozlo\u017eila teplota.<\/li>\n<\/ul>\n<h4>6.2.3 Ovl\u00e1d\u00e1n\u00ed oto\u010dn\u00e9ho mechanismu<\/h4>\n<p>U velk\u00fdch turb\u00edn zaji\u0161\u0165uje provoz ot\u00e1\u010dec\u00edho mechanismu (n\u00edzkoot\u00e1\u010dkov\u00e9ho rota\u010dn\u00edho pohonu) b\u011bhem zah\u0159\u00edv\u00e1n\u00ed a ochlazov\u00e1n\u00ed nep\u0159etr\u017eit\u00fd pohyb h\u0159\u00eddele, \u010d\u00edm\u017e se teplo rovnom\u011brn\u011b rozlo\u017e\u00ed po cel\u00e9m obvodu a zabr\u00e1n\u00ed se tak vzniku teplotn\u00edho gradientu, kter\u00fd by jinak zp\u016fsobil prohnut\u00ed rotoru.<\/p>\n<h2>7. Kontrola rotoru v ter\u00e9nu<\/h2>\n<p>Jakmile je h\u0159\u00eddel vyrovn\u00e1na, vym\u011bn\u011bna nebo shled\u00e1na dostate\u010dn\u011b rovnou pro provoz, je t\u0159eba rotor je\u0161t\u011b dynamicky zkontrolovat v jeho vlastn\u00edch podpor\u00e1ch \u2013 samotn\u00e9 m\u011b\u0159en\u00ed radi\u00e1ln\u00edho h\u00e1zen\u00ed na zku\u0161ebn\u00edm stole toti\u017e nezaru\u010duje, \u017ee bude p\u0159i ot\u00e1\u010dk\u00e1ch b\u011b\u017eet hladce. P\u0159enosn\u00fd dvoukan\u00e1lov\u00fd analyz\u00e1tor, jako je nap\u0159\u00edklad <a href=\"https:\/\/vibromera.eu\/cs\/produkt\/balanset-1\/\">Balanset-1A<\/a> to umo\u017e\u0148uje praktick\u00e9 pou\u017eit\u00ed p\u0159\u00edmo na m\u00edst\u011b: nejprve zaznamen\u00e1 vektor p\u0159i pomal\u00e9m ot\u00e1\u010den\u00ed a pot\u00e9 provede m\u011b\u0159en\u00ed 1\u00d7 <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/phase\/\">amplituda a f\u00e1ze<\/a> v cel\u00e9m rozsahu ot\u00e1\u010dek, aby technik mohl odli\u0161it p\u0159\u00edpadn\u00e9 zbytkov\u00e9 slo\u017eky zp\u016fsoben\u00e9 prohnut\u00edm od skute\u010dn\u00e9 nevyv\u00e1\u017eenosti hmotnosti. Teprve pot\u00e9, co m\u011b\u0159en\u00ed pomal\u00e9ho h\u00e1zen\u00ed potvrd\u00ed, \u017ee h\u0159\u00eddel je dostate\u010dn\u011b rovn\u00e1, m\u00e1 smysl p\u0159istoupit k vyv\u00e1\u017een\u00ed <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/vyvazovani\/\">vyv\u00e1\u017een\u00ed<\/a> \u2014 v tom okam\u017eiku tent\u00fd\u017e n\u00e1stroj vypo\u010d\u00edt\u00e1 <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/influence-coefficient\/\">koeficienty vlivu<\/a> a ov\u011b\u0159\u00ed kone\u010dn\u00fd v\u00fdsledek s <a href=\"https:\/\/vibromera.eu\/cs\/glossary\/iso-21940-11\/\">ISO 21940-11<\/a> stupe\u0148 vyv\u00e1\u017een\u00ed. Tuto p\u0159\u00edpustnou hodnotu zbytkov\u00e9 hmotnosti m\u016f\u017eete p\u0159edem vypo\u010d\u00edtat pomoc\u00ed <a href=\"https:\/\/vibromera.eu\/cs\/calculators\/residual-unbalance-iso1940\/\">Kalkul\u00e1tor zbytkov\u00e9 nevyv\u00e1\u017eenosti (ISO 21940-11)<\/a> Ne\u017e za\u010dnete.<\/p>\n<h2>8. Preventivn\u00ed strategie<\/h2>\n<p>Prevence prohnut\u00ed h\u0159\u00eddele je mnohem levn\u011bj\u0161\u00ed a rychlej\u0161\u00ed ne\u017e jeho oprava.<\/p>\n<h3>8.1 N\u00e1vrh a v\u00fdroba<\/h3>\n<ul>\n<li>Pou\u017e\u00edvejte spr\u00e1vn\u00e9 postupy tepeln\u00e9ho zpracov\u00e1n\u00ed, abyste minimalizovali zbytkov\u00e9 nap\u011bt\u00ed.<\/li>\n<li>Navrhn\u011bte odpov\u00eddaj\u00edc\u00ed tuhost h\u0159\u00eddele pro danou aplikaci<\/li>\n<li>Ur\u010dete materi\u00e1ly vhodn\u00e9 pro dan\u00e9 tepeln\u00e9 podm\u00ednky.<\/li>\n<\/ul>\n<h3>8.2 Instalace a \u00fadr\u017eba<\/h3>\n<ul>\n<li>Rotory v\u017edy zvedejte za ur\u010den\u00e9 zvedac\u00ed body, nikdy ne za h\u0159\u00eddel<\/li>\n<li>N\u00e1hradn\u00ed rotory skladujte tak, aby byly \u0159\u00e1dn\u011b podep\u0159eny a nedo\u0161lo k jejich prohnut\u00ed \u2013 ide\u00e1ln\u011b je pravideln\u011b ot\u00e1\u010dejte nebo podep\u0159ete v bl\u00edzkosti \u010dep\u016f.<\/li>\n<li>P\u0159i manipulaci se vyhn\u011bte mechanick\u00fdm n\u00e1raz\u016fm.<\/li>\n<li>Pravideln\u011b kontrolujte p\u0159\u00edmostnost h\u0159\u00eddele (jednou ro\u010dn\u011b nebo podle harmonogramu v\u00fdrobce).<\/li>\n<\/ul>\n<h3>8.3 Provoz<\/h3>\n<ul>\n<li>Dodr\u017eujte pokyny v\u00fdrobce pro zah\u0159\u00edv\u00e1n\u00ed a vyp\u00edn\u00e1n\u00ed za\u0159\u00edzen\u00ed.<\/li>\n<li>Vyhn\u011bte se prudk\u00fdm zm\u011bn\u00e1m teploty.<\/li>\n<li>P\u0159i spou\u0161t\u011bn\u00ed sledujte, zda se neobjevuj\u00ed zn\u00e1mky tepeln\u00e9ho prohnut\u00ed.<\/li>\n<li>Jakoukoli nevysv\u011btlitelnou zm\u011bnu f\u00e1ze vibrac\u00ed neprodlen\u011b pro\u0161et\u0159ete.<\/li>\n<\/ul>\n<h2>9. Dopad na vyva\u017eovac\u00ed postupy<\/h2>\n<p>Sna\u017eit se vyv\u00e1\u017eit ohnutou h\u0159\u00eddel je zpravidla marn\u00e9 a m\u016f\u017ee to dokonce p\u0159in\u00e9st opa\u010dn\u00fd \u00fa\u010dinek:<\/p>\n<ul>\n<li><strong>Ne\u00fa\u010dinn\u00e9 opravy:<\/strong> V\u00e1hy vypo\u010d\u00edtan\u00e9 pro hmotnostn\u00ed nevyv\u00e1\u017eenost nedok\u00e1\u017eed napravit geometrick\u00e9 prohnut\u00ed.<\/li>\n<li><strong>Zaml\u010dov\u00e1n\u00ed probl\u00e9mu:<\/strong> \u010c\u00e1ste\u010dn\u011b &#8220;\u00fasp\u011b\u0161n\u00e9&#8221; vyv\u00e1\u017een\u00ed ohnut\u00e9 h\u0159\u00eddele m\u016f\u017ee sice na kr\u00e1tkou dobu potla\u010dit vibrace, av\u0161ak skute\u010dnou z\u00e1vadu \u2013 a s n\u00ed spojen\u00e9 zat\u00ed\u017een\u00ed lo\u017eiska \u2013 ponech\u00e1 beze zm\u011bny.<\/li>\n<li><strong>Wasted time:<\/strong> Opakovan\u00e9 vyva\u017eovac\u00ed cykly, kter\u00e9 se neda\u0159\u00ed ust\u00e1lit, jsou samy o sob\u011b varovn\u00fdm sign\u00e1lem pro prohnut\u00ed.<\/li>\n<li><strong>Mo\u017en\u00e9 \u0161kody:<\/strong> Um\u00edst\u011bn\u00ed velk\u00fdch vyva\u017eovac\u00edch z\u00e1va\u017e\u00ed na prohnutou h\u0159\u00eddel zvy\u0161uje nam\u00e1h\u00e1n\u00ed a m\u016f\u017ee v\u00e9st k dal\u0161\u00edmu po\u0161kozen\u00ed nebo dokonce k \u00fanavov\u00fdm trhlin\u00e1m.<\/li>\n<\/ul>\n<p><strong>Nejlep\u0161\u00ed postup:<\/strong> P\u0159ed zah\u00e1jen\u00edm vyva\u017eov\u00e1n\u00ed v\u017edy zkontrolujte, zda nen\u00ed h\u0159\u00eddel ohnut\u00e1, zejm\u00e9na pokud byl rotor v minulosti vystaven hrub\u00e9mu zach\u00e1zen\u00ed, teplotn\u00edm v\u00fdkyv\u016fm nebo vibrac\u00edm, kter\u00e9 nikdo nedok\u00e1zal vysv\u011btlit. Dvouminutov\u00e1 kontrola pomal\u00fdm ot\u00e1\u010den\u00edm v\u00e1m m\u016f\u017ee u\u0161et\u0159it zbyte\u010dn\u011b promarn\u011bn\u00e9 odpoledne a po\u0161kozen\u00ed h\u0159\u00eddele.<\/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 prohnut\u00edm h\u0159\u00eddele, co\u017e je trval\u00e9 nebo do\u010dasn\u00e9 zak\u0159iven\u00ed h\u0159\u00eddele rotoru, kter\u00e9 zp\u016fsobuje vibra\u010dn\u00ed p\u0159\u00edznaky podobn\u00e9 nevyv\u00e1\u017eenosti, ale vy\u017eaduje odli\u0161n\u00e9 diagnostick\u00e9 a korek\u010dn\u00ed p\u0159\u00edstupy.<\/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\/cs\/wp-json\/wp\/v2\/glossary\/232","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\/232\/revisions"}],"predecessor-version":[{"id":101458,"href":"https:\/\/vibromera.eu\/cs\/wp-json\/wp\/v2\/glossary\/232\/revisions\/101458"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/cs\/wp-json\/wp\/v2\/media?parent=232"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/cs\/wp-json\/wp\/v2\/categories?post=232"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/cs\/wp-json\/wp\/v2\/tags?post=232"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}