{"id":92,"date":"2025-10-31T00:25:51","date_gmt":"2025-10-31T00:25:51","guid":{"rendered":"https:\/\/vibromera.eu\/glossary\/critical-speed\/"},"modified":"2026-05-23T22:47:50","modified_gmt":"2026-05-23T22:47:50","slug":"critical-speed","status":"publish","type":"glossary","link":"https:\/\/vibromera.eu\/sk\/glossary\/critical-speed\/","title":{"rendered":"\u010co je kritick\u00e1 r\u00fdchlos\u0165 v dynamike rotora?"},"content":{"rendered":"<h1>Vysvetlenie kritickej r\u00fdchlosti v dynamike 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\/92?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\/92?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\/92?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\/92?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\/92?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\/92?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\/92?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\/92?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\/92?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\/92?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\/92?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\/92?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\/92?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\/92?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>A <strong>kritick\u00e1 r\u00fdchlos\u0165<\/strong> je ot\u00e1\u010dky, pri ktor\u00fdch sa prev\u00e1dzkov\u00e1 frekvencia rotora zhoduje s jednou z jeho <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/natural-frequency\/\">prirodzen\u00e9 frekvencie<\/a> vibr\u00e1ci\u00ed. Ke\u010f stroj be\u017e\u00ed pri kritickej r\u00fdchlosti alebo v jej bl\u00edzkosti, <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/resonance\/\">rezonancia<\/a> sa uchyt\u00ed a dokonca aj mikroskopick\u00e9 mno\u017estvo <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/residual-unbalance\/\">zvy\u0161kov\u00e1 nevyv\u00e1\u017eenos\u0165<\/a> sa zv\u00e4\u010d\u0161uje do ve\u013ek\u00fdch, potenci\u00e1lne nebezpe\u010dn\u00fdch <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/vibration\/\">vibr\u00e1cie<\/a>. Ke\u010f\u017ee ka\u017ed\u00fd rotor m\u00e1 nieko\u013eko vlastn\u00fdch frekvenci\u00ed \u2013 po jednej pre ka\u017ed\u00fd re\u017eim kmitania, ako je prv\u00fd re\u017eim ohybu, druh\u00fd re\u017eim ohybu at\u010f. \u2013 m\u00e1 aj viacero kritick\u00fdch ot\u00e1\u010dok. Predpovedanie t\u00fdchto ot\u00e1\u010dok, ich odl\u00ed\u0161enie od seba a bezpe\u010dn\u00e9 prekonanie ich je jedn\u00fdm z hlavn\u00fdch probl\u00e9mov <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/rotor-dynamics\/\">dynamika rotora<\/a>.<\/p>\n<h2>1. Defin\u00edcia: \u010co je kritick\u00e1 r\u00fdchlos\u0165?<\/h2>\n<p>Rotuj\u00faci rotor je v podstate syst\u00e9mom s hmotnos\u0165ou a tuhos\u0165ou a ako ka\u017ed\u00fd tak\u00fdto syst\u00e9m m\u00e1 preferovan\u00e9 frekvencie, pri ktor\u00fdch m\u00e1 tendenciu vibrova\u0165. Prev\u00e1dzkov\u00e1 r\u00fdchlos\u0165 poskytuje raz za ot\u00e1\u010dku silov\u00fd vstup z nevyv\u00e1\u017eenosti. Ke\u010f prev\u00e1dzkov\u00e1 r\u00fdchlos\u0165 zodpoved\u00e1 vlastnej frekvencii, tento silov\u00fd vstup prich\u00e1dza v perfektnom \u010dase s vlastnou oscil\u00e1ciou rotora, energia sa hromad\u00ed cyklus za cyklom a amplit\u00fada dramaticky narast\u00e1. Tento bod zhody je kritick\u00e1 r\u00fdchlos\u0165.<\/p>\n<p>Tvar, ktor\u00fd nadob\u00fada rotor pri ot\u00e1\u010dan\u00ed kritickou r\u00fdchlos\u0165ou, je jeho <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/mode-shape\/\">tvar m\u00f3du<\/a>, a bo\u010dn\u00fd kr\u00fa\u017eiv\u00fd pohyb, ktor\u00fd sa pri tom vytv\u00e1ra, patr\u00ed do skupiny spr\u00e1vania op\u00edsan\u00e9ho v <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/whirl\/\">whirl and whip<\/a>. Je d\u00f4le\u017eit\u00e9 poznamena\u0165, \u017ee kritick\u00e1 r\u00fdchlos\u0165 nie je vlastnos\u0165ou nevyv\u00e1\u017eenosti \u2013 nevyv\u00e1\u017eenos\u0165 iba <em>excites<\/em> . R\u00fdchlos\u0165 je dan\u00e1 hmotnos\u0165ou rotora, jeho geometriou a tuhos\u0165ou hriade\u013ea a op\u00f4r.<\/p>\n<h2>2. Pre\u010do je kritick\u00e1 r\u00fdchlos\u0165 tak\u00e1 d\u00f4le\u017eit\u00e1<\/h2>\n<p>Prev\u00e1dzka stroja pri kritickej r\u00fdchlosti, aj keby len na kr\u00e1tko, m\u00f4\u017ee ma\u0165 katastrof\u00e1lne n\u00e1sledky. Medzi tieto n\u00e1sledky patria:<\/p>\n<ul>\n<li><strong>Nadmern\u00e9 vibr\u00e1cie:<\/strong> amplit\u00fady sa m\u00f4\u017eu zv\u00fd\u0161i\u0165 desa\u0165n\u00e1sobne, dvadsa\u0165n\u00e1sobne alebo aj viac, v z\u00e1vislosti od toho, o ko\u013eko <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/damping\/\">tlmenie<\/a> syst\u00e9m m\u00e1.<\/li>\n<li><strong>Zlyhanie s\u00fa\u010diastky:<\/strong> vysok\u00e9 vibr\u00e1cie a priehyb hriade\u013ea sp\u00f4sobuj\u00fa poruchu lo\u017e\u00edsk, po\u0161kodenie tesnenia a <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/rotor-rub\/\">trenie<\/a> medzi rotuj\u00facimi a pevn\u00fdmi \u010das\u0165ami.<\/li>\n<li><strong>Z\u00e1va\u017en\u00e9 zlyhanie hriade\u013ea:<\/strong> V z\u00e1va\u017en\u00fdch pr\u00edpadoch striedav\u00e9 ohybov\u00e9 nam\u00e1hanie prekro\u010d\u00ed \u00fanavov\u00fa medzu materi\u00e1lu, \u010do m\u00f4\u017ee vies\u0165 k prasknutiu alebo zlomeniu hriade\u013ea.<\/li>\n<li><strong>Bezpe\u010dnostn\u00e9 rizik\u00e1:<\/strong> Porucha pri vysokej r\u00fdchlosti ohrozuje person\u00e1l a zariadenia v okol\u00ed.<\/li>\n<\/ul>\n<p>Z v\u0161etk\u00fdch t\u00fdchto d\u00f4vodov s\u00fa stroje navrhovan\u00e9 tak, aby <strong>bezpe\u010dnostn\u00e1 rezerva<\/strong>: be\u017en\u00e1 prev\u00e1dzkov\u00e1 r\u00fdchlos\u0165 sa udr\u017eiava v bezpe\u010dnej vzdialenosti od ka\u017edej kritickej r\u00fdchlosti.<\/p>\n<h2>3. Tuh\u00e9 vs. ohybn\u00e9 rotory<\/h2>\n<p>Kritick\u00e1 r\u00fdchlos\u0165 je pr\u00e1ve ten pojem, ktor\u00fd rozde\u013euje rotory do dvoch tried:<\/p>\n<ul>\n<li><strong><a href=\"https:\/\/vibromera.eu\/sk\/glossary\/rigid-rotor\/\">Rigid rotor<\/a>:<\/strong> operates <em>pod<\/em> svoju prv\u00fa kritick\u00fa r\u00fdchlos\u0165. Jeho hriade\u013e sa pri prev\u00e1dzke v\u00fdrazne neoh\u00fdba \u2013 typicky ide o pomal\u0161ie, robustnej\u0161ie stroje, vyv\u00e1\u017een\u00e9 tak, aby <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/iso-21940-11\/\">ISO 21940-11<\/a> tolerances.<\/li>\n<li><strong><a href=\"https:\/\/vibromera.eu\/sk\/glossary\/flexible-rotor\/\">Flexible rotor<\/a>:<\/strong> navrhnut\u00fd na chod <em>above<\/em> svoju prv\u00fa (a niekedy aj druh\u00fa alebo tretiu) kritick\u00fa r\u00fdchlos\u0165. Jeho hriade\u013e sa oh\u00fdba a kr\u00fati pri prechode cez ka\u017ed\u00fa kritick\u00fa r\u00fdchlos\u0165 po\u010das sp\u00fa\u0161\u0165ania a zastavovania. \u0160t\u00edhle vysokor\u00fdchlostn\u00e9 rotory v turb\u00ednach a kompresoroch s\u00fa ohybn\u00e9 rotory a vy\u017eaduj\u00fa si <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/multi-plane-balancing\/\">vyva\u017eovanie vo viacer\u00fdch rovin\u00e1ch<\/a> techniky, ktor\u00e9 sa preberaj\u00fa v <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/iso-21940-12\/\">ISO 21940-12<\/a>.<\/li>\n<\/ul>\n<h2>4. Riadenie kritick\u00fdch r\u00fdchlost\u00ed po\u010das prev\u00e1dzky<\/h2>\n<p>Ke\u010f\u017ee je \u010dasto nepraktick\u00e9 navrhn\u00fa\u0165 vysokor\u00fdchlostn\u00fd stroj, ktor\u00fd by sa pohyboval pod hranicou svojej prvej kritickej r\u00fdchlosti, in\u017einieri kombinuj\u00fa viacero strat\u00e9gi\u00ed, aby s t\u00fdmito strojmi mohli bezpe\u010dne pracova\u0165.<\/p>\n<h3>4.1 Odstupov\u00e1 vzdialenos\u0165<\/h3>\n<p>Z\u00e1kladn\u00fdm pravidlom je udr\u017eiava\u0165 prev\u00e1dzkov\u00fa r\u00fdchlos\u0165 mimo kritickej r\u00fdchlosti, a to s typickou rezervou \u00b120\u201330 %. Ak je kritick\u00e1 r\u00fdchlos\u0165 3 000 ot.\/min, stroj by nemal be\u017ea\u0165 nepretr\u017eite v rozmedz\u00ed pribli\u017ene 2 400 a\u017e 3 600 ot.\/min.<\/p>\n<h3>4.2 R\u00fdchle zr\u00fdch\u013eovanie a spoma\u013eovanie<\/h3>\n<p>Pru\u017en\u00e9 rotory, ktor\u00e9 musia prekro\u010di\u0165 kritick\u00fa r\u00fdchlos\u0165, sa r\u00fdchlo rozbehn\u00fa a zastavia v nebezpe\u010dnom p\u00e1sme. Zotrv\u00e1vanie pri kritickej r\u00fdchlosti umo\u017e\u0148uje, aby amplit\u00fada narastla na nebezpe\u010dn\u00fa \u00farove\u0148; r\u00fdchly prechod nedovol\u00ed, aby sa rezonan\u010dn\u00fd \u010das pred\u013a\u017eil.<\/p>\n<h3>4.3 Damping<\/h3>\n<p>Tlmenie rozpty\u013euje vibra\u010dn\u00fa energiu a obmedzuje maxim\u00e1lnu amplit\u00fadu pri rezonancii. Lo\u017eisk\u00e1 \u2013 najm\u00e4 s kvapalinov\u00fdm filmom <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/journal-bearing\/\">klzn\u00e9 lo\u017eisk\u00e1<\/a> \u2014 s\u00fa hlavn\u00fdm zdrojom tlmenia; tlmi\u010de s vytl\u00e1\u010dan\u00fdm olejov\u00fdm filmom (squeeze-film) tento \u00fa\u010dinok v pr\u00edpade potreby e\u0161te posil\u0148uj\u00fa. Optimaliz\u00e1ciou kon\u0161trukcie lo\u017e\u00edsk sa vrchol kritickej r\u00fdchlosti udr\u017e\u00ed na bezpe\u010dnej a zvl\u00e1dnute\u013enej \u00farovni.<\/p>\n<h3>4.4 Presn\u00e9 vyva\u017eovanie<\/h3>\n<p>Ke\u010f\u017ee vibr\u00e1cie pri kritickej r\u00fdchlosti predstavuj\u00fa zosilnen\u00fa reakciu na nevyv\u00e1\u017eenos\u0165, \u010d\u00edm je rotor lep\u0161ie vyv\u00e1\u017een\u00fd, t\u00fdm men\u0161ia je jeho hnacia funkcia a t\u00fdm ni\u017e\u0161ia je jej \u0161pi\u010dka pri prechode rezonanciou. Pri ohybn\u00fdch rotoroch sa met\u00f3dy mod\u00e1lnej anal\u00fdzy a viacrovinovej anal\u00fdzy zameriavaj\u00fa postupne na ka\u017ed\u00fd m\u00f3d.<\/p>\n<h2>5. Ako sa ur\u010duj\u00fa kritick\u00e9 r\u00fdchlosti<\/h2>\n<p>Kritick\u00e9 r\u00fdchlosti sa zis\u0165uj\u00fa tak na papieri, ako aj v testovacej hale:<\/p>\n<ul>\n<li><strong>Dynamick\u00e1 anal\u00fdza rotora (RDA):<\/strong> Modely zalo\u017een\u00e9 na met\u00f3de kone\u010dn\u00fdch prvkov, vytvoren\u00e9 u\u017e vo f\u00e1ze n\u00e1vrhu, predpovedaj\u00fa kritick\u00e9 ot\u00e1\u010dky a tvary kmitania e\u0161te predt\u00fdm, ako sa kov za\u010dne rezat. Na\u0161e <a href=\"https:\/\/vibromera.eu\/sk\/calculators\/rotor-critical-speed\/\">Kalkula\u010dka kritick\u00fdch ot\u00e1\u010dok rotora<\/a> poskytuje r\u00fdchly prv\u00fd odhad najni\u017e\u0161ej kritickej r\u00fdchlosti hriade\u013ea na z\u00e1klade jeho geometrie a op\u00f4r.<\/li>\n<li><strong>Sk\u00fa\u0161ky rozbiehania a dobehu:<\/strong> najbe\u017enej\u0161ia experiment\u00e1lna met\u00f3da, pri ktorej sa v priebehu merania zaznamen\u00e1vaj\u00fa amplit\u00fada a f\u00e1za v z\u00e1vislosti od r\u00fdchlosti <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/run-up-analysis\/\">n\u00e1beh<\/a> alebo <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/coastdown-analysis\/\">dobeh<\/a>. Kritick\u00e1 r\u00fdchlos\u0165 sa prejavuje ako zrete\u013en\u00fd amplit\u00fadov\u00fd vrchol sprev\u00e1dzan\u00fd charakteristick\u00fdm f\u00e1zov\u00fdm posunom o 180\u00b0 <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/phase\/\">f\u00e1za<\/a> zmena, zobrazen\u00e1 na <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/bode-plot\/\">Bodeho graf<\/a> alebo <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/waterfall-plot\/\">vodop\u00e1dov\u00fd graf<\/a>.<\/li>\n<li><strong>Sk\u00fa\u0161ka n\u00e1razom:<\/strong> \u00daderom do stojaceho rotora pomocou meracieho kladiva sa vyvolaj\u00fa jeho vlastn\u00e9 kmity, ktor\u00e9 zodpovedaj\u00fa jeho kritick\u00fdm ot\u00e1\u010dkam \u2013 pozri <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/bump-test\/\">n\u00e1razov\u00fd test<\/a>.<\/li>\n<\/ul>\n<p>V pr\u00edpade strojov pracuj\u00facich v r\u00f4znych ot\u00e1\u010dkov\u00fdch rozsahoch sa vz\u0165ah medzi porad\u00edm budenia a vlastn\u00fdmi frekvenciami najlep\u0161ie zn\u00e1zorn\u00ed na <a href=\"https:\/\/vibromera.eu\/sk\/glossary\/campbell-diagram\/\">Campbellov diagram<\/a>; kri\u017eovatky m\u00f4\u017eete r\u00fdchlo zmapova\u0165 pomocou <a href=\"https:\/\/vibromera.eu\/sk\/calculators\/campbell-diagram-calculator\/\">Kalkula\u010dka Campbellov\u00fdch diagramov<\/a>.<\/p>\n<h2>6. Potvrdenie rezervy v ter\u00e9ne<\/h2>\n<p>Predpovedanie kritickej r\u00fdchlosti je len polovica \u00falohy; overenie, \u010di sa skuto\u010dn\u00fd stroj spr\u00e1va pod\u013ea predpokladov, je t\u00e1 druh\u00e1 polovica. Prenosn\u00fd dvojkan\u00e1lov\u00fd analyz\u00e1tor, ako je napr\u00edklad <a href=\"https:\/\/vibromera.eu\/sk\/produkt\/balanset-1\/\">Balanset-1A<\/a> zaznamen\u00e1va 1\u00d7 amplit\u00fadu a f\u00e1zu v z\u00e1vislosti od ot\u00e1\u010dok po\u010das rozbiehania alebo dobehu, tak\u017ee skuto\u010dn\u00fa polohu kritickej r\u00fdchlosti a v\u00fd\u0161ku jej rezonan\u010dn\u00e9ho vrcholu je mo\u017en\u00e9 od\u010d\u00edta\u0165 priamo z krivky. Ak \u00fadaje nazna\u010duj\u00fa, \u017ee stroj sa nach\u00e1dza pr\u00edli\u0161 bl\u00edzko kritickej r\u00fdchlosti, ten ist\u00fd pr\u00edstroj umo\u017e\u0148uje vyv\u00e1\u017eenie priamo na mieste, \u010d\u00edm sa zn\u00ed\u017ei p\u00f4sobiaca sila a zmierni vrchol \u2013 v\u010faka \u010domu m\u00f4\u017eete overi\u0165 bezpe\u010dnostn\u00fa rezervu v lo\u017eisk\u00e1ch, v ktor\u00fdch bude rotor skuto\u010dne be\u017ea\u0165.<\/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 kritickej r\u00fdchlosti, \u010do je r\u00fdchlos\u0165 ot\u00e1\u010dania, pri ktorej sa rotor st\u00e1va dynamicky nestabiln\u00fdm v d\u00f4sledku rezonancie. Pochopte jej pr\u00ed\u010diny, n\u00e1sledky a to, ako sa s \u0148ou zaobch\u00e1dza pri kon\u0161trukcii strojov.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"ai_generated_summary":"","footnotes":""},"categories":[109,111],"tags":[],"class_list":["post-92","glossary","type-glossary","status-publish","hentry","category-glossary","category-rotor-balancing"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/sk\/wp-json\/wp\/v2\/glossary\/92","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\/92\/revisions"}],"predecessor-version":[{"id":101380,"href":"https:\/\/vibromera.eu\/sk\/wp-json\/wp\/v2\/glossary\/92\/revisions\/101380"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/sk\/wp-json\/wp\/v2\/media?parent=92"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/sk\/wp-json\/wp\/v2\/categories?post=92"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/sk\/wp-json\/wp\/v2\/tags?post=92"}],"curies":[{"name":"pracovn\u00fd list","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}