{"id":219,"date":"2025-10-31T00:25:51","date_gmt":"2025-10-31T00:25:51","guid":{"rendered":"https:\/\/vibromera.eu\/glossary\/rotor-instability\/"},"modified":"2026-05-23T22:53:31","modified_gmt":"2026-05-23T22:53:31","slug":"rotor-instability","status":"publish","type":"glossary","link":"https:\/\/vibromera.eu\/sk\/glossary\/rotor-instability\/","title":{"rendered":"\u010co je nestabilita rotora? Samobuden\u00e9 vibr\u00e1cie"},"content":{"rendered":"<h1>Pochopenie nestability rotora<\/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\/sk\/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\/sk\/product\/balanset-1\/\" title=\"Prenosn\u00fd vyva\u017eova\u010d a analyz\u00e1tor vibr\u00e1ci\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\u00e1 s\u00faprava prenosn\u00e9ho vyva\u017eovacieho zariadenia a analyz\u00e1tora vibr\u00e1ci\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\/sk\/product-category\/devices\/\" rel=\"tag\">Zariadenia<\/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\/sk\/product\/balanset-1\/\" title=\"Prenosn\u00fd vyva\u017eova\u010d a analyz\u00e1tor vibr\u00e1ci\u00ed Balanset-1A\">Prenosn\u00fd vyva\u017eova\u010d a analyz\u00e1tor vibr\u00e1ci\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 (ak sa 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=\"\/sk\/wp-json\/wp\/v2\/glossary\/219?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=\"Prida\u0165 do ko\u0161\u00edka\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Prida\u0165 do ko\u0161\u00edka\" 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=\"\/sk\/wp-json\/wp\/v2\/glossary\/219?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=\"Prida\u0165 do ko\u0161\u00edka: \u201ePortable balancer &amp; Vibration analyzer Balanset-1A\u201c\" rel=\"nofollow\" data-success_message=\"\u201ePortable balancer &amp; Vibration analyzer Balanset-1A\u201c bol pridan\u00fd do v\u00e1\u0161ho ko\u0161\u00edka\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Prida\u0165 do ko\u0161\u00edka<\/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\/sk\/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\/sk\/product\/vibration-sensor\/\" title=\"Sn\u00edma\u010d vibr\u00e1ci\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 vibr\u00e1ci\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\/sk\/product-category\/parts\/\" rel=\"tag\">Diely<\/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\/sk\/product\/vibration-sensor\/\" title=\"Sn\u00edma\u010d vibr\u00e1ci\u00ed\">Sn\u00edma\u010d vibr\u00e1ci\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 (ak sa 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=\"\/sk\/wp-json\/wp\/v2\/glossary\/219?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=\"Prida\u0165 do ko\u0161\u00edka\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Prida\u0165 do ko\u0161\u00edka\" 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=\"\/sk\/wp-json\/wp\/v2\/glossary\/219?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=\"Prida\u0165 do ko\u0161\u00edka: \u201eVibration sensor\u201c\" rel=\"nofollow\" data-success_message=\"\u201eVibration sensor\u201c bol pridan\u00fd do v\u00e1\u0161ho ko\u0161\u00edka\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Prida\u0165 do ko\u0161\u00edka<\/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\/sk\/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\/sk\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Optick\u00fd senzor (laserov\u00fd tachometer)\">\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 tachometer)\" 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\/sk\/product-category\/parts\/\" rel=\"tag\">Diely<\/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\/sk\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Optick\u00fd senzor (laserov\u00fd tachometer)\">Optick\u00fd senzor (laserov\u00fd tachometer)<\/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 (ak sa 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=\"\/sk\/wp-json\/wp\/v2\/glossary\/219?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=\"Prida\u0165 do ko\u0161\u00edka\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Prida\u0165 do ko\u0161\u00edka\" 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=\"\/sk\/wp-json\/wp\/v2\/glossary\/219?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=\"Prida\u0165 do ko\u0161\u00edka: \u201eOptical Sensor (Laser Tachometer)\u201c\" rel=\"nofollow\" data-success_message=\"\u201eOptical Sensor (Laser Tachometer)\u201c bol pridan\u00fd do v\u00e1\u0161ho ko\u0161\u00edka\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Prida\u0165 do ko\u0161\u00edka<\/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\/sk\/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\/sk\/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=\"S\u00faprava na vyva\u017eovanie rotora Vibromera: prenosn\u00e9 puzdro, viackan\u00e1lov\u00fd prevodn\u00edk sign\u00e1lu, ru\u010dn\u00fd analyz\u00e1tor, magnetick\u00e1 z\u00e1klad\u0148a, vibra\u010dn\u00e9 senzory a \u0161pir\u00e1lov\u00e9 k\u00e1ble.\" 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\/sk\/product-category\/devices\/\" rel=\"tag\">Zariadenia<\/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\/sk\/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 (ak sa 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=\"\/sk\/wp-json\/wp\/v2\/glossary\/219?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=\"Prida\u0165 do ko\u0161\u00edka\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Prida\u0165 do ko\u0161\u00edka\" 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=\"\/sk\/wp-json\/wp\/v2\/glossary\/219?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=\"Prida\u0165 do ko\u0161\u00edka: \u201eBalanset-4\u201c\" rel=\"nofollow\" data-success_message=\"\u201eBalanset-4\u201c bol pridan\u00fd do v\u00e1\u0161ho ko\u0161\u00edka\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Prida\u0165 do ko\u0161\u00edka<\/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\/sk\/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\/sk\/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\u00e1klad\u0148a.\" 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\/sk\/product-category\/parts\/\" rel=\"tag\">Diely<\/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\/sk\/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 (ak sa 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=\"\/sk\/wp-json\/wp\/v2\/glossary\/219?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=\"Prida\u0165 do ko\u0161\u00edka\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Prida\u0165 do ko\u0161\u00edka\" 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=\"\/sk\/wp-json\/wp\/v2\/glossary\/219?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=\"Prida\u0165 do ko\u0161\u00edka: \u201eMagnetic Stand Insize-60-kgf\u201c\" rel=\"nofollow\" data-success_message=\"\u201eMagnetic Stand Insize-60-kgf\u201c bol pridan\u00fd do v\u00e1\u0161ho ko\u0161\u00edka\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Prida\u0165 do ko\u0161\u00edka<\/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\/sk\/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\/sk\/product\/reflective-tape\/\" title=\"Reflexn\u00e1 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\u00e1 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\/sk\/product-category\/parts\/\" rel=\"tag\">Diely<\/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\/sk\/product\/reflective-tape\/\" title=\"Reflexn\u00e1 p\u00e1ska\">Reflexn\u00e1 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 (ak sa 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=\"\/sk\/wp-json\/wp\/v2\/glossary\/219?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=\"Prida\u0165 do ko\u0161\u00edka\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Prida\u0165 do ko\u0161\u00edka\" 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=\"\/sk\/wp-json\/wp\/v2\/glossary\/219?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=\"Prida\u0165 do ko\u0161\u00edka: \u201eReflective tape\u201c\" rel=\"nofollow\" data-success_message=\"\u201eReflective tape\u201c bol pridan\u00fd do v\u00e1\u0161ho ko\u0161\u00edka\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Prida\u0165 do ko\u0161\u00edka<\/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\/sk\/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\/sk\/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 s\u00fapravy Balanset-1A s jednotkou rozhrania, sn\u00edma\u010dmi, tachometrom a pr\u00edslu\u0161enstvom\" 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\/sk\/product-category\/devices\/\" rel=\"tag\">Zariadenia<\/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\/sk\/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 (ak sa 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=\"\/sk\/wp-json\/wp\/v2\/glossary\/219?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=\"Prida\u0165 do ko\u0161\u00edka\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Prida\u0165 do ko\u0161\u00edka\" 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=\"\/sk\/wp-json\/wp\/v2\/glossary\/219?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=\"Prida\u0165 do ko\u0161\u00edka: \u201eDynamic balancer \u201cBalanset-1A\u201d OEM\u201c\" rel=\"nofollow\" data-success_message=\"\u201eDynamic balancer \u201cBalanset-1A\u201d OEM\u201c bol pridan\u00fd do v\u00e1\u0161ho ko\u0161\u00edka\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Prida\u0165 do ko\u0161\u00edka<\/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>Nestabilita rotora<\/strong> je stav rota\u010dn\u00e9ho stroja, pri ktorom <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/self-excited-vibration\/\">samobuden\u00e9 vibr\u00e1cie<\/a> vznik\u00e1 a rastie bez obmedzenia, limitovan\u00e1 iba neline\u00e1rnymi efektmi alebo \u00fapln\u00fdm zlyhan\u00edm. Na rozdiel od vibr\u00e1ci\u00ed z <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/unbalance\/\">nevyv\u00e1\u017eenos\u0165<\/a> alebo <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/misalignment\/\">nespr\u00e1vne zarovnanie<\/a> \u2014 which are <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/forced-vibration\/\">vyn\u00faten\u00e9 vibr\u00e1cie<\/a> poh\u00e1\u0148an\u00fdch vonkaj\u0161\u00edmi silami \u2014 nestabilita je samoudr\u017eiavaj\u00faca sa oscil\u00e1cia, ktor\u00e1 nepretr\u017eite \u010derp\u00e1 energiu z ust\u00e1len\u00e9ho ot\u00e1\u010dania hriade\u013ea a pre\u010derp\u00e1va ju do vibra\u010dn\u00e9ho pohybu. Je to jeden z najnebezpe\u010dnej\u0161\u00edch javov v <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/rotor-dynamics\/\">dynamika rotora<\/a>: m\u00f4\u017ee sa objavi\u0165 n\u00e1hle, do nieko\u013ek\u00fdch sek\u00fand nar\u00e1s\u0165 do de\u0161trukt\u00edvnych amplit\u00fad a \u2014 \u010do je rozhoduj\u00face \u2014 nemo\u017eno ju odstr\u00e1ni\u0165 <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/vyvazovanie\/\">vyva\u017eovanie<\/a> ani vyrovnan\u00edm. Vy\u017eaduje okam\u017eit\u00e9 odstavenie a n\u00e1pravu z\u00e1kladn\u00e9ho destabilizuj\u00faceho mechanizmu.<\/p>\n<h2>1. Vyn\u00faten\u00e1 vs. vlastn\u00fa budiacu vibr\u00e1cia<\/h2>\n<p>Najd\u00f4le\u017eitej\u0161\u00edm pojmom pri pochopen\u00ed nestability je rozdiel medzi vibr\u00e1ciami, ktor\u00e9 s\u00fa poh\u00e1\u0148an\u00e9, a vibr\u00e1ciami, ktor\u00e9 poh\u00e1\u0148aj\u00fa samy seba.<\/p>\n<h3>Vyn\u00faten\u00e1 vibr\u00e1cia (stabiln\u00e1)<\/h3>\n<p>V\u00e4\u010d\u0161ina vibr\u00e1ci\u00ed strojov je vyn\u00faten\u00e1. Vonkaj\u0161ia sila \u2014 nevyv\u00e1\u017eenos\u0165, nes\u00faosovos\u0165, ohnut\u00fd hriade\u013e \u2014 poh\u00e1\u0148a pohyb a syst\u00e9m na\u0148 jednoducho reaguje:<\/p>\n<ul>\n<li>Amplit\u00fada je \u00famern\u00e1 ve\u013ekosti budiacej sily.<\/li>\n<li>Frekvencia zodpoved\u00e1 budiacej frekvencii (1\u00d7, 2\u00d7 at\u010f.).<\/li>\n<li>Odstr\u00e1\u0148te silu a vibr\u00e1cie zmizn\u00fa.<\/li>\n<li>Syst\u00e9m je stabiln\u00fd; vibr\u00e1cie nikdy nerast\u00fa neobmedzene.<\/li>\n<\/ul>\n<h3>Vlastn\u00e1 bud\u00faca vibr\u00e1cia (nestabiln\u00e1)<\/h3>\n<p>Nestabilita je z\u00e1sadne odli\u0161n\u00e1. Energia sa z\u00edskava zo samotnej rot\u00e1cie, namiesto toho, aby ju dod\u00e1vala vonkaj\u0161ia sila:<\/p>\n<ul>\n<li>Amplit\u00fada rastie exponenci\u00e1lne po prekro\u010den\u00ed prahovej r\u00fdchlosti<\/li>\n<li>Frekvencia sa zvy\u010dajne nach\u00e1dza na alebo bl\u00edzko <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/natural-frequency\/\">prirodzen\u00e1 frekvencia<\/a>a je zvy\u010dajne <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/sub-synchronous\/\">subsynchr\u00f3nny<\/a>.<\/li>\n<li>Pokra\u010duje a rastie aj vtedy, ke\u010f bola nevyv\u00e1\u017eenos\u0165 dokonale odstr\u00e1nen\u00e1.<\/li>\n<li>Syst\u00e9m je nestabiln\u00fd; zastavi\u0165 ho m\u00f4\u017ee len odstavenie alebo fyzick\u00e1 zmena.<\/li>\n<\/ul>\n<h2>2. Be\u017en\u00e9 typy nestability rotora<\/h2>\n<h3>Olejov\u00fd v\u00edr<\/h3>\n<p><a href=\"https:\/\/vibromera.eu\/sk\/glossary\/oil-whirl\/\">Olejov\u00fd v\u00edr<\/a> je najbe\u017enej\u0161ia nestabilita v syst\u00e9moch s <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/journal-bearing\/\">klzn\u00e9 lo\u017eisko<\/a> klzn\u00fdm lo\u017eiskom. Olejov\u00fd klin, ktor\u00fd podopiera hriade\u013e, vyv\u00edja tangenci\u00e1lnu silu, ktor\u00e1 tla\u010d\u00ed \u010dap okolo lo\u017eiskovej v\u00f4le. Objavuje sa pri pribli\u017ene 0,42 \u2013 0,48\u00d7 ot\u00e1\u010dkach (subsynchr\u00f3nne), zvy\u010dajne ke\u010f ot\u00e1\u010dky prekro\u010dia pribli\u017ene dvojn\u00e1sobok prvej <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/critical-speed\/\">kritick\u00e1 r\u00fdchlos\u0165<\/a>a prejavuje sa ako subsynchr\u00f3nne vibr\u00e1cie s vysokou amplit\u00fadou, ktor\u00e9 sa s rast\u00facimi ot\u00e1\u010dkami zhor\u0161uj\u00fa. Obvykl\u00fdmi rie\u0161eniami s\u00fa zmeny kon\u0161trukcie lo\u017eiska, pridan\u00e9 <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/preload\/\">Predbe\u017en\u00e9 za\u0165a\u017eenie<\/a>alebo presaden\u00e9 konfigur\u00e1cie.<\/p>\n<h3>Olejov\u00e1 vibr\u00e1cia (v\u00e1\u017ena nestabilita)<\/h3>\n<p>Olejov\u00fd bi\u010d (oil whip) je nebezpe\u010dn\u00e1 zrel\u00e1 forma olejov\u00e9ho v\u00edru. Ke\u010f rotor zr\u00fdch\u013euje, frekvencia v\u00edru rastie, a\u017e k\u00fdm sa neuzamkne na prv\u00fa vlastn\u00fa frekvenciu, a potom tam zost\u00e1va bez oh\u013eadu na \u010fal\u0161ie zvy\u0161ovanie ot\u00e1\u010dok. V\u00fdsledkom je ve\u013emi vysok\u00e1 amplit\u00fada pri kon\u0161tantnej frekvencii, schopn\u00e1 zni\u010di\u0165 lo\u017eisk\u00e1 a hriade\u013e v priebehu nieko\u013ek\u00fdch min\u00fat. Prechod od zvl\u00e1dnute\u013en\u00e9ho v\u00edru k de\u0161trukt\u00edvnemu bi\u010du je d\u00f4vodom, pre\u010do nesmie by\u0165 nestabilita nikdy tolerovan\u00e1.<\/p>\n<h3>Parn\u00fd v\u00edr a aerodynamick\u00e9 nestability<\/h3>\n<p><a href=\"https:\/\/vibromera.eu\/sk\/glossary\/steam-whirl\/\">Parn\u00fd v\u00edr<\/a> vznik\u00e1 v parn\u00fdch turb\u00ednach vybaven\u00fdch labyrintov\u00fdmi tesneniami, kde aerodynamick\u00e9 kr\u00ed\u017eovo viazan\u00e9 sily v tesniacich v\u00f4\u013each poh\u00e1\u0148aj\u00fa subsynchr\u00f3nne kmitanie bl\u00edzko vlastnej frekvencie pri vysok\u00fdch tlakov\u00fdch rozdieloch. Typick\u00fdmi rie\u0161eniami s\u00fa brzdy v\u00edrenia, antiv\u00edrov\u00e9 zariadenia a upraven\u00e1 geometria tesnenia.<\/p>\n<h3>Bi\u010d hriade\u013ea<\/h3>\n<p><a href=\"https:\/\/vibromera.eu\/sk\/glossary\/shaft-whip\/\">Bi\u010d hriade\u013ea<\/a> je v\u0161eobecn\u00e9 ozna\u010denie pre nieko\u013eko samobuden\u00fdch mechanizmov vr\u00e1tane vn\u00fatorn\u00e9ho (hyster\u00e9zneho) tlmenia v materi\u00e1li hriade\u013ea, v\u00edru pri suchom tren\u00ed vznikaj\u00faceho na tesneniach alebo pri otere a aerodynamick\u00fdch \u010di hydrodynamick\u00fdch kr\u00ed\u017eovo viazan\u00fdch s\u00edl. \u0160ir\u0161ia skupina <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/whirl\/\">whirl and whip<\/a> javov m\u00e1 spolo\u010dn\u00fd rovnak\u00fd samoudr\u017eiavac\u00ed prenos energie.<\/p>\n<h2>3. Charakteristiky a pr\u00edznaky<\/h2>\n<h3>Charakteristika vibr\u00e1ci\u00ed<\/h3>\n<p>Nestabilita zanech\u00e1va v d\u00e1tach v\u00fdrazn\u00fd s\u00fabor charakteristick\u00fdch znakov:<\/p>\n<ul>\n<li><strong>Podsynchr\u00f3na frekvencia:<\/strong> a dominant component below 1\u00d7 running speed, typically around 0.4\u20130.5\u00d7.<\/li>\n<li><strong>Nez\u00e1vislos\u0165 od ot\u00e1\u010dok:<\/strong> akon\u00e1hle sa nestabilita ust\u00e1li, frekvencia zost\u00e1va nemenn\u00e1 aj pri zmene ot\u00e1\u010dok.<\/li>\n<li><strong>R\u00fdchly n\u00e1rast:<\/strong> amplit\u00fada exponenci\u00e1lne rastie vo chv\u00edli, ke\u010f sa prekro\u010d\u00ed prahov\u00e1 r\u00fdchlos\u0165.<\/li>\n<li><strong>Vysok\u00e1 amplit\u00fada:<\/strong> m\u00f4\u017ee dosiahnu\u0165 2\u201310-n\u00e1sobok amplit\u00fady be\u017en\u00fdch vibr\u00e1ci\u00ed sp\u00f4soben\u00fdch nevyv\u00e1\u017eenos\u0165ou.<\/li>\n<li><strong>Predsunut\u00e1 precesia:<\/strong> . <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/orbit\/\">obe\u017en\u00e1 dr\u00e1ha hriade\u013ea<\/a> rotuje v rovnakom smere ako samotn\u00fd hriade\u013e.<\/li>\n<\/ul>\n<h3>Spr\u00e1vanie pri vzniku<\/h3>\n<p>Nestabilita je riaden\u00e1 prahovou r\u00fdchlos\u0165ou. Pod \u0148ou je syst\u00e9m stabiln\u00fd a vyskytuj\u00fa sa len vyn\u00faten\u00e9 vibr\u00e1cie; pri prahovej r\u00fdchlosti sta\u010d\u00ed na spustenie n\u00e1behu mal\u00e1 porucha; a nad \u0148ou sa nestabilita r\u00fdchlo rozv\u00edja. V po\u010diato\u010dnej f\u00e1ze \u017eivotnosti stroja m\u00f4\u017ee preru\u0161ovane prebliesknu\u0165, k\u00fdm sa neust\u00e1li do nepretr\u017eitej, narastaj\u00facej oscil\u00e1cie.<\/p>\n<h2>4. Diagnostick\u00e1 identifik\u00e1cia<\/h2>\n<p>K\u013e\u00fa\u010dom k diagnostike je oddelenie samobudenej nestability od be\u017en\u00fdch vyn\u00faten\u00fdch vibr\u00e1ci\u00ed. Rozdiel je markantn\u00fd:<\/p>\n<table border=\"1\" style=\"width:100%; border-collapse:collapse;\">\n<tr>\n<th>Charakteristick\u00fd<\/th>\n<th>Nevyv\u00e1\u017eenos\u0165 (vyn\u00faten\u00e1)<\/th>\n<th>Nestabilita (vlastn\u00fa bud\u00faca)<\/th>\n<\/tr>\n<tr>\n<td>Frekvencia<\/td>\n<td>1\u00d7 r\u00fdchlos\u0165 chodu<\/td>\n<td>Subsynchr\u00f3nne (\u010dasto ~0,45\u00d7)<\/td>\n<\/tr>\n<tr>\n<td>Amplit\u00fada v z\u00e1vislosti od r\u00fdchlosti<\/td>\n<td>Plynule sa zvy\u0161uje s r\u00fdchlos\u0165ou\u00b2<\/td>\n<td>N\u00e1hly n\u00e1stup nad prahom<\/td>\n<\/tr>\n<tr>\n<td>Odozva na vyv\u00e1\u017eenie<\/td>\n<td>Zn\u00ed\u017een\u00e9 vibr\u00e1cie<\/td>\n<td>Bez zlep\u0161enia v\u00f4bec<\/td>\n<\/tr>\n<tr>\n<td>Frekvencia verzus r\u00fdchlos\u0165<\/td>\n<td>Sleduje r\u00fdchlos\u0165 (kon\u0161tantn\u00fd poriadok)<\/td>\n<td>Kon\u0161tantn\u00e1 frekvencia (menian\u00fd poriadok)<\/td>\n<\/tr>\n<tr>\n<td>Spr\u00e1vanie pri vypnut\u00ed<\/td>\n<td>Zni\u017euje sa s r\u00fdchlos\u0165ou<\/td>\n<td>M\u00f4\u017ee kr\u00e1tko pretrv\u00e1va\u0165 aj po poklese r\u00fdchlosti<\/td>\n<\/tr>\n<\/table>\n<h3>Potvrdenie nestability<\/h3>\n<p>Ot\u00e1zku rozhodne vyrie\u0161ia viacer\u00e9 techniky. <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/order-analysis\/\">R\u00e1dov\u00e1 anal\u00fdza<\/a> ukazuje zlo\u017eku, ktor\u00e1 si udr\u017eiava kon\u0161tantn\u00fa frekvenciu, zatia\u013e \u010do sa jej r\u00e1d men\u00ed; <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/waterfall-plot\/\">vodop\u00e1dov\u00fd graf<\/a> odhal\u00ed frekven\u010dn\u00fa \u010diaru, ktor\u00e1 odmieta sledova\u0165 ot\u00e1\u010dky; vyva\u017eovanie nem\u00e1 na podsynchr\u00f3nny vrchol \u017eiadny vplyv; a <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/orbit\/\">anal\u00fdza obe\u017enej dr\u00e1hy<\/a> ukazuje dopredn\u00fa precesiu pri vlastnej frekvencii. Prenosn\u00fd dvojkan\u00e1lov\u00fd analyz\u00e1tor, ako napr\u00edklad <a href=\"https:\/\/vibromera.eu\/sk\/produkt\/balanset-1\/\">Balanset-1A<\/a> je vhodn\u00fd na zachytenie t\u00fdchto d\u00f4kazov priamo v ter\u00e9ne \u2014 pri z\u00e1zname podsynchr\u00f3nnej zlo\u017eky, jej n\u00e1rastu amplit\u00fady s ot\u00e1\u010dkami a \u010diary 1\u00d7 ved\u013ea seba \u2014 tak\u017ee in\u017einier dok\u00e1\u017ee odl\u00ed\u0161i\u0165 skuto\u010dn\u00fa nestabilitu od jednoduchej nevyv\u00e1\u017eenosti e\u0161te predt\u00fdm, ne\u017e sa rozhodne, \u010di m\u00e1 v\u00f4bec zmysel pok\u00fa\u0161a\u0165 sa o vyva\u017eovanie. Potvrdenie, \u017ee porucha je samobuden\u00e1, zabr\u00e1ni n\u00e1kladnej chybe v podobe snahy vyv\u00e1\u017ei\u0165 probl\u00e9m, ktor\u00fd sa vyva\u017eovan\u00edm vyrie\u0161i\u0165 ned\u00e1.<\/p>\n<h2>5. Prevencia a zmiernenie<\/h2>\n<h3>Aspekty n\u00e1vrhu<\/h3>\n<ul>\n<li><strong>Dostato\u010dn\u00e9 tlmenie:<\/strong> lo\u017eiskov\u00e9 syst\u00e9my musia poskytova\u0165 dostato\u010dne <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/damping\/\">tlmenie<\/a> na potla\u010denie n\u00e1behu nestability.<\/li>\n<li><strong>V\u00fdber lo\u017e\u00edsk:<\/strong> vo\u013ete typy a konfigur\u00e1cie s dobr\u00fdm vlastn\u00fdm tlmen\u00edm, ako s\u00fa lo\u017eisk\u00e1 s nakl\u00e1pac\u00edmi segmentmi alebo predp\u00e4t\u00e9 lo\u017eisk\u00e1.<\/li>\n<li><strong>Optimaliz\u00e1cia tuhosti:<\/strong> nastavte primeran\u00fa v\u00f4\u013eu medzi hriade\u013eom a lo\u017eiskom <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/stiffness\/\">tuhos\u0165<\/a> ratios.<\/li>\n<li><strong>Bezpe\u010dnostn\u00e1 rezerva prev\u00e1dzkovej r\u00fdchlosti:<\/strong> navrhnite stroj tak, aby pracoval pod prahov\u00fdmi ot\u00e1\u010dkami nestability.<\/li>\n<\/ul>\n<h3>Kon\u0161truk\u010dn\u00e9 rie\u0161enia lo\u017e\u00edsk<\/h3>\n<ul>\n<li><strong>Lo\u017eisk\u00e1 s kv\u00e1dzaj\u00facimi podlo\u017ekami:<\/strong> prirodzene stabiln\u00e9, \u0161tandardn\u00e1 vo\u013eba pre vysokoot\u00e1\u010dkov\u00fa prev\u00e1dzku.<\/li>\n<li><strong>Lo\u017eisk\u00e1 s tlakov\u00fdm priestorom:<\/strong> upraven\u00e1 geometria, ktor\u00e1 zvy\u0161uje \u00fa\u010dinn\u00e9 tlmenie.<\/li>\n<li><strong>Predp\u00e4tie lo\u017eiska:<\/strong> zvy\u0161uje tuhos\u0165 a tlmenie a pos\u00fava prahov\u00e9 ot\u00e1\u010dky nahor.<\/li>\n<li><strong><a href=\"https:\/\/vibromera.eu\/sk\/glossary\/squeeze-film-damper\/\">Tvarovate\u013en\u00e9 tlma\u010de visk\u00f3zne<\/a>:<\/strong> vonkaj\u0161ie tlmiace prvky osaden\u00e9 okolo lo\u017e\u00edsk.<\/li>\n<\/ul>\n<h3>Prev\u00e1dzkov\u00e9 rie\u0161enia<\/h3>\n<ul>\n<li><strong>Obmedzenie r\u00fdchlosti:<\/strong> obmedzte maxim\u00e1lne ot\u00e1\u010dky pod prahov\u00fa hodnotu.<\/li>\n<li><strong>Load increase:<\/strong> vy\u0161\u0161ie za\u0165a\u017eenie lo\u017e\u00edsk m\u00f4\u017ee roz\u0161\u00edri\u0165 rezervu stability.<\/li>\n<li><strong>Regul\u00e1cia teploty:<\/strong> teplota oleja ur\u010duje viskozitu a viskozita ur\u010duje tlmenie.<\/li>\n<li><strong>Nepretr\u017eit\u00e9 monitorovanie:<\/strong> v\u010dasn\u00e1 detekcia poskytuje \u010das na odstavenie sk\u00f4r, ne\u017e d\u00f4jde k po\u0161kodeniu.<\/li>\n<\/ul>\n<h2>6. N\u00fadzov\u00e1 reakcia a anal\u00fdza stability<\/h2>\n<p>Ak sa po\u010das prev\u00e1dzky objav\u00ed nestabilita, postup reakcie je jednozna\u010dn\u00fd:<\/p>\n<ol>\n<li><strong>Konajte okam\u017eite:<\/strong> zn\u00ed\u017ete r\u00fdchlos\u0165 alebo okam\u017eite zastavte.<\/li>\n<li><strong>Nepok\u00fa\u0161ajte sa o vyva\u017eovanie:<\/strong> nedok\u00e1\u017ee napravi\u0165 nestabilitu a iba prem\u00e1rni kritick\u00fd \u010das.<\/li>\n<li><strong>Zdokumentujte podmienky:<\/strong> zaznamenajte ot\u00e1\u010dky pri vzniku, frekvenciu a v\u00fdvoj amplit\u00fady.<\/li>\n<li><strong>Presk\u00famajte hlavn\u00fa pr\u00ed\u010dinu:<\/strong> ur\u010dte, ktor\u00fd mechanizmus \u2014 olejov\u00fd v\u00edr, olejov\u00fd bi\u010d, parn\u00fd v\u00edr alebo tren\u00edm vyvolan\u00fd bi\u010d \u2014 p\u00f4sob\u00ed.<\/li>\n<li><strong>Vykonajte korekciu:<\/strong> primerane zme\u0148te lo\u017eisk\u00e1, tesnenia alebo prev\u00e1dzkov\u00e9 podmienky.<\/li>\n<li><strong>Overte opravu:<\/strong> opatrne uve\u010fte stroj sp\u00e4\u0165 do prev\u00e1dzky pod d\u00f4kladn\u00fdm doh\u013eadom.<\/li>\n<\/ol>\n<p>In\u017einieri predpovedaj\u00fa a kon\u0161truk\u010dne eliminuj\u00fa nestabilitu prostredn\u00edctvom form\u00e1lnej anal\u00fdzy stability. T\u00e1 zah\u0155\u0148a v\u00fdpo\u010det vlastn\u00fdch hodn\u00f4t <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/rotor-bearing-system\/\">syst\u00e9m rotora a lo\u017e\u00edsk<\/a>: re\u00e1lna \u010das\u0165 ka\u017edej vlastnej hodnoty signalizuje stabilitu \u2014 z\u00e1porn\u00e1 je stabiln\u00e1, kladn\u00e1 je nestabiln\u00e1 \u2014 pri\u010dom v\u00fdpo\u010det lokalizuje prahov\u00e9 ot\u00e1\u010dky, pri ktor\u00fdch sa stabilita men\u00ed. T\u00e1to pr\u00e1ca sa zvy\u010dajne opiera o \u0161pecializovan\u00fd softv\u00e9r pre rotorov\u00fa dynamiku a sp\u00e4tne ovplyv\u0148uje kon\u0161truk\u010dn\u00e9 rozhodnutia, ktor\u00e9 zaru\u010duj\u00fa dostato\u010dn\u00e9 rezervy stability. Hoci je rotorov\u00e1 nestabilita ove\u013ea menej \u010dast\u00e1 ne\u017e nevyv\u00e1\u017eenos\u0165 alebo nes\u00faosovos\u0165, patr\u00ed medzi najz\u00e1va\u017enej\u0161ie vibra\u010dn\u00e9 stavy rota\u010dn\u00fdch strojov a rozpoznanie jej mechanizmov a pr\u00edznakov je nevyhnutnou zru\u010dnos\u0165ou pre ka\u017ed\u00e9ho, kto pracuje s vysokoot\u00e1\u010dkov\u00fdmi zariadeniami.<\/p>\n<hr>\n<p><a href=\"https:\/\/vibromera.eu\/sk\/glossary\/\">\u2190 Sp\u00e4\u0165 na hlavn\u00fd index<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Z\u00edskajte inform\u00e1cie o nestabilite rotora, \u010do je nebezpe\u010dn\u00fd stav samobuden\u00fdch vibr\u00e1ci\u00ed, pri ktorom energia z rot\u00e1cie udr\u017eiava alebo zosil\u0148uje oscil\u00e1cie, \u010do vedie k potenci\u00e1lnemu katastrofick\u00e9mu zlyhaniu.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"ai_generated_summary":"","footnotes":""},"categories":[109,111],"tags":[],"class_list":["post-219","glossary","type-glossary","status-publish","hentry","category-glossary","category-rotor-balancing"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/sk\/wp-json\/wp\/v2\/glossary\/219","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vibromera.eu\/sk\/wp-json\/wp\/v2\/glossary"}],"about":[{"href":"https:\/\/vibromera.eu\/sk\/wp-json\/wp\/v2\/types\/glossary"}],"version-history":[{"count":1,"href":"https:\/\/vibromera.eu\/sk\/wp-json\/wp\/v2\/glossary\/219\/revisions"}],"predecessor-version":[{"id":101404,"href":"https:\/\/vibromera.eu\/sk\/wp-json\/wp\/v2\/glossary\/219\/revisions\/101404"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/sk\/wp-json\/wp\/v2\/media?parent=219"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/sk\/wp-json\/wp\/v2\/categories?post=219"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/sk\/wp-json\/wp\/v2\/tags?post=219"}],"curies":[{"name":"pracovn\u00fd list","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}