{"id":221,"date":"2025-10-31T00:25:51","date_gmt":"2025-10-31T00:25:51","guid":{"rendered":"https:\/\/vibromera.eu\/glossary\/rotor\/"},"modified":"2026-05-23T22:31:14","modified_gmt":"2026-05-23T22:31:14","slug":"rotor","status":"publish","type":"glossary","link":"https:\/\/vibromera.eu\/ml\/glossary\/rotor\/","title":{"rendered":"What is a Rotor in Mechanical Engineering?"},"content":{"rendered":"<h1>Understanding the Rotor in Rotating Machinery<\/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\/ml\/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\/ml\/product\/balanset-1\/\" title=\"\u0d2a\u0d4b\u0d7c\u0d1f\u0d4d\u0d1f\u0d2c\u0d3f\u0d7e \u0d2c\u0d3e\u0d32\u0d7b\u0d38\u0d31\u0d41\u0d02 \u0d35\u0d48\u0d2c\u0d4d\u0d30\u0d47\u0d37\u0d7b \u0d05\u0d28\u0d32\u0d48\u0d38\u0d7c \u0d2c\u0d3e\u0d32\u0d7b\u0d38\u0d46\u0d31\u0d4d\u0d31\u0d4d-1\u0d0e\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Balanset-1A full kit portable balancer and vibration analyzer\" 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\/ml\/product-category\/devices\/\" rel=\"tag\">\u0d09\u0d2a\u0d15\u0d30\u0d23\u0d19\u0d4d\u0d19\u0d7e<\/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\/ml\/product\/balanset-1\/\" title=\"\u0d2a\u0d4b\u0d7c\u0d1f\u0d4d\u0d1f\u0d2c\u0d3f\u0d7e \u0d2c\u0d3e\u0d32\u0d7b\u0d38\u0d31\u0d41\u0d02 \u0d35\u0d48\u0d2c\u0d4d\u0d30\u0d47\u0d37\u0d7b \u0d05\u0d28\u0d32\u0d48\u0d38\u0d7c \u0d2c\u0d3e\u0d32\u0d7b\u0d38\u0d46\u0d31\u0d4d\u0d31\u0d4d-1\u0d0e\">\u0d2a\u0d4b\u0d7c\u0d1f\u0d4d\u0d1f\u0d2c\u0d3f\u0d7e \u0d2c\u0d3e\u0d32\u0d7b\u0d38\u0d31\u0d41\u0d02 \u0d35\u0d48\u0d2c\u0d4d\u0d30\u0d47\u0d37\u0d7b \u0d05\u0d28\u0d32\u0d48\u0d38\u0d7c \u0d2c\u0d3e\u0d32\u0d7b\u0d38\u0d46\u0d31\u0d4d\u0d31\u0d4d-1\u0d0e<\/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> + VAT (if applicable)<\/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=\"\/ml\/wp-json\/wp\/v2\/glossary\/221?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=\"Add to cart\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Add to cart\" 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=\"\/ml\/wp-json\/wp\/v2\/glossary\/221?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=\"Add to cart: \u201cPortable balancer &amp; Vibration analyzer Balanset-1A\u201d\" rel=\"nofollow\" data-success_message=\"\u201cPortable balancer &amp; Vibration analyzer Balanset-1A\u201d has been added to your cart\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Add to cart<\/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\/ml\/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\/ml\/product\/vibration-sensor\/\" title=\"\u0d35\u0d48\u0d2c\u0d4d\u0d30\u0d47\u0d37\u0d7b \u0d38\u0d46\u0d7b\u0d38\u0d7c\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Balanset-1A vibration sensor close-up\" 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\/ml\/product-category\/parts\/\" rel=\"tag\">\u0d2d\u0d3e\u0d17\u0d19\u0d4d\u0d19\u0d7e<\/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\/ml\/product\/vibration-sensor\/\" title=\"\u0d35\u0d48\u0d2c\u0d4d\u0d30\u0d47\u0d37\u0d7b \u0d38\u0d46\u0d7b\u0d38\u0d7c\">\u0d35\u0d48\u0d2c\u0d4d\u0d30\u0d47\u0d37\u0d7b \u0d38\u0d46\u0d7b\u0d38\u0d7c<\/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> + VAT (if applicable)<\/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=\"\/ml\/wp-json\/wp\/v2\/glossary\/221?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=\"Add to cart\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Add to cart\" 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=\"\/ml\/wp-json\/wp\/v2\/glossary\/221?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=\"Add to cart: \u201cVibration sensor\u201d\" rel=\"nofollow\" data-success_message=\"\u201cVibration sensor\u201d has been added to your cart\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Add to cart<\/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\/ml\/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\/ml\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"\u0d12\u0d2a\u0d4d\u0d31\u0d4d\u0d31\u0d3f\u0d15\u0d4d\u0d15\u0d7d \u0d38\u0d46\u0d7b\u0d38\u0d7c (\u0d32\u0d47\u0d38\u0d7c \u0d1f\u0d3e\u0d15\u0d4d\u0d15\u0d4b\u0d2e\u0d40\u0d31\u0d4d\u0d31\u0d7c)\">\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=\"\u0d12\u0d2a\u0d4d\u0d31\u0d4d\u0d31\u0d3f\u0d15\u0d4d\u0d15\u0d7d \u0d38\u0d46\u0d7b\u0d38\u0d7c (\u0d32\u0d47\u0d38\u0d7c \u0d1f\u0d3e\u0d15\u0d4d\u0d15\u0d4b\u0d2e\u0d40\u0d31\u0d4d\u0d31\u0d7c)\" 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\/ml\/product-category\/parts\/\" rel=\"tag\">\u0d2d\u0d3e\u0d17\u0d19\u0d4d\u0d19\u0d7e<\/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\/ml\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"\u0d12\u0d2a\u0d4d\u0d31\u0d4d\u0d31\u0d3f\u0d15\u0d4d\u0d15\u0d7d \u0d38\u0d46\u0d7b\u0d38\u0d7c (\u0d32\u0d47\u0d38\u0d7c \u0d1f\u0d3e\u0d15\u0d4d\u0d15\u0d4b\u0d2e\u0d40\u0d31\u0d4d\u0d31\u0d7c)\">\u0d12\u0d2a\u0d4d\u0d31\u0d4d\u0d31\u0d3f\u0d15\u0d4d\u0d15\u0d7d \u0d38\u0d46\u0d7b\u0d38\u0d7c (\u0d32\u0d47\u0d38\u0d7c \u0d1f\u0d3e\u0d15\u0d4d\u0d15\u0d4b\u0d2e\u0d40\u0d31\u0d4d\u0d31\u0d7c)<\/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> + VAT (if applicable)<\/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=\"\/ml\/wp-json\/wp\/v2\/glossary\/221?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=\"Add to cart\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Add to cart\" 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=\"\/ml\/wp-json\/wp\/v2\/glossary\/221?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=\"Add to cart: \u201cOptical Sensor (Laser Tachometer)\u201d\" rel=\"nofollow\" data-success_message=\"\u201cOptical Sensor (Laser Tachometer)\u201d has been added to your cart\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Add to cart<\/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\/ml\/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\/ml\/product\/balanset-4\/\" title=\"\u0d2c\u0d3e\u0d32\u0d7b\u0d38\u0d46\u0d31\u0d4d\u0d31\u0d4d-4\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Vibromera rotor balancing kit: carry case, multi-channel signal conditioner, handheld analyzer, magnetic base, vibration sensors, and coiled cables.\" 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\/ml\/product-category\/devices\/\" rel=\"tag\">\u0d09\u0d2a\u0d15\u0d30\u0d23\u0d19\u0d4d\u0d19\u0d7e<\/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\/ml\/product\/balanset-4\/\" title=\"\u0d2c\u0d3e\u0d32\u0d7b\u0d38\u0d46\u0d31\u0d4d\u0d31\u0d4d-4\">\u0d2c\u0d3e\u0d32\u0d7b\u0d38\u0d46\u0d31\u0d4d\u0d31\u0d4d-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> + VAT (if applicable)<\/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=\"\/ml\/wp-json\/wp\/v2\/glossary\/221?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=\"Add to cart\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Add to cart\" 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=\"\/ml\/wp-json\/wp\/v2\/glossary\/221?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=\"Add to cart: \u201cBalanset-4\u201d\" rel=\"nofollow\" data-success_message=\"\u201cBalanset-4\u201d has been added to your cart\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Add to cart<\/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\/ml\/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\/ml\/product\/magnet-stand\/\" title=\"\u0d2e\u0d3e\u0d17\u0d4d\u0d28\u0d31\u0d4d\u0d31\u0d3f\u0d15\u0d4d \u0d38\u0d4d\u0d31\u0d4d\u0d31\u0d3e\u0d7b\u0d21\u0d4d \u0d07\u0d7b\u0d38\u0d48\u0d38\u0d4d-60-\u0d15\u0d3f\u0d32\u0d4b\u0d17\u0d4d\u0d30\u0d3e\u0d02\">\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=\"\u0d15\u0d3e\u0d28\u0d4d\u0d24\u0d02 \u0d05\u0d1f\u0d3f\u0d38\u0d4d\u0d25\u0d3e\u0d28\u0d02.\" 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\/ml\/product-category\/parts\/\" rel=\"tag\">\u0d2d\u0d3e\u0d17\u0d19\u0d4d\u0d19\u0d7e<\/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\/ml\/product\/magnet-stand\/\" title=\"\u0d2e\u0d3e\u0d17\u0d4d\u0d28\u0d31\u0d4d\u0d31\u0d3f\u0d15\u0d4d \u0d38\u0d4d\u0d31\u0d4d\u0d31\u0d3e\u0d7b\u0d21\u0d4d \u0d07\u0d7b\u0d38\u0d48\u0d38\u0d4d-60-\u0d15\u0d3f\u0d32\u0d4b\u0d17\u0d4d\u0d30\u0d3e\u0d02\">\u0d2e\u0d3e\u0d17\u0d4d\u0d28\u0d31\u0d4d\u0d31\u0d3f\u0d15\u0d4d \u0d38\u0d4d\u0d31\u0d4d\u0d31\u0d3e\u0d7b\u0d21\u0d4d \u0d07\u0d7b\u0d38\u0d48\u0d38\u0d4d-60-\u0d15\u0d3f\u0d32\u0d4b\u0d17\u0d4d\u0d30\u0d3e\u0d02<\/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> + VAT (if applicable)<\/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=\"\/ml\/wp-json\/wp\/v2\/glossary\/221?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=\"Add to cart\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Add to cart\" 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=\"\/ml\/wp-json\/wp\/v2\/glossary\/221?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=\"Add to cart: \u201cMagnetic Stand Insize-60-kgf\u201d\" rel=\"nofollow\" data-success_message=\"\u201cMagnetic Stand Insize-60-kgf\u201d has been added to your cart\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Add to cart<\/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\/ml\/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\/ml\/product\/reflective-tape\/\" title=\"\u0d2a\u0d4d\u0d30\u0d24\u0d3f\u0d2b\u0d32\u0d3f\u0d2a\u0d4d\u0d2a\u0d3f\u0d15\u0d4d\u0d15\u0d41\u0d28\u0d4d\u0d28 \u0d1f\u0d47\u0d2a\u0d4d\u0d2a\u0d4d\">\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=\"\u0d2a\u0d4d\u0d30\u0d24\u0d3f\u0d2b\u0d32\u0d3f\u0d2a\u0d4d\u0d2a\u0d3f\u0d15\u0d4d\u0d15\u0d41\u0d28\u0d4d\u0d28 \u0d1f\u0d47\u0d2a\u0d4d\u0d2a\u0d4d\" 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\/ml\/product-category\/parts\/\" rel=\"tag\">\u0d2d\u0d3e\u0d17\u0d19\u0d4d\u0d19\u0d7e<\/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\/ml\/product\/reflective-tape\/\" title=\"\u0d2a\u0d4d\u0d30\u0d24\u0d3f\u0d2b\u0d32\u0d3f\u0d2a\u0d4d\u0d2a\u0d3f\u0d15\u0d4d\u0d15\u0d41\u0d28\u0d4d\u0d28 \u0d1f\u0d47\u0d2a\u0d4d\u0d2a\u0d4d\">\u0d2a\u0d4d\u0d30\u0d24\u0d3f\u0d2b\u0d32\u0d3f\u0d2a\u0d4d\u0d2a\u0d3f\u0d15\u0d4d\u0d15\u0d41\u0d28\u0d4d\u0d28 \u0d1f\u0d47\u0d2a\u0d4d\u0d2a\u0d4d<\/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> + VAT (if applicable)<\/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=\"\/ml\/wp-json\/wp\/v2\/glossary\/221?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=\"Add to cart\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Add to cart\" 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=\"\/ml\/wp-json\/wp\/v2\/glossary\/221?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=\"Add to cart: \u201cReflective tape\u201d\" rel=\"nofollow\" data-success_message=\"\u201cReflective tape\u201d has been added to your cart\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Add to cart<\/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\/ml\/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\/ml\/product\/dynamic-balancer-balanset-1a\/\" title=\"\u0d21\u0d48\u0d28\u0d3e\u0d2e\u0d3f\u0d15\u0d4d \u0d2c\u0d3e\u0d32\u0d7b\u0d38\u0d7c &quot;\u0d2c\u0d3e\u0d32\u0d7b\u0d38\u0d46\u0d31\u0d4d\u0d31\u0d4d-1\u0d0e&quot; \u0d12\u0d07\u0d0e\u0d02\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Balanset-1A kit contents with interface unit, sensors, tachometer and accessories\" 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\/ml\/product-category\/devices\/\" rel=\"tag\">\u0d09\u0d2a\u0d15\u0d30\u0d23\u0d19\u0d4d\u0d19\u0d7e<\/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\/ml\/product\/dynamic-balancer-balanset-1a\/\" title=\"\u0d21\u0d48\u0d28\u0d3e\u0d2e\u0d3f\u0d15\u0d4d \u0d2c\u0d3e\u0d32\u0d7b\u0d38\u0d7c &quot;\u0d2c\u0d3e\u0d32\u0d7b\u0d38\u0d46\u0d31\u0d4d\u0d31\u0d4d-1\u0d0e&quot; \u0d12\u0d07\u0d0e\u0d02\">\u0d21\u0d48\u0d28\u0d3e\u0d2e\u0d3f\u0d15\u0d4d \u0d2c\u0d3e\u0d32\u0d7b\u0d38\u0d7c &quot;\u0d2c\u0d3e\u0d32\u0d7b\u0d38\u0d46\u0d31\u0d4d\u0d31\u0d4d-1\u0d0e&quot; \u0d12\u0d07\u0d0e\u0d02<\/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> + VAT (if applicable)<\/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=\"\/ml\/wp-json\/wp\/v2\/glossary\/221?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=\"Add to cart\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Add to cart\" 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=\"\/ml\/wp-json\/wp\/v2\/glossary\/221?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=\"Add to cart: \u201cDynamic balancer \u201cBalanset-1A\u201d OEM\u201d\" rel=\"nofollow\" data-success_message=\"\u201cDynamic balancer \u201cBalanset-1A\u201d OEM\u201d has been added to your cart\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Add to cart<\/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>\u0d31\u0d4b\u0d1f\u0d4d\u0d1f\u0d7c<\/strong> is the primary rotating assembly inside a piece of machinery. It typically consists of a central shaft on which other components \u2014 impellers, blades, magnets, or armatures \u2014 are mounted, supported by bearings and designed to transmit torque and do useful work. The study of how a rotor behaves while it spins, including its vibrations and deflections, is <a href=\"https:\/\/vibromera.eu\/ml\/glossary\/rotor-dynamics\/\">rotor dynamics<\/a>, a critical field in mechanical engineering. Because almost every fault an engineer chases with <a href=\"https:\/\/vibromera.eu\/ml\/glossary\/vibration-analysis\/\">vibration analysis<\/a> originates in or acts upon the rotor, understanding it is the starting point for diagnostics and balancing alike.<\/p>\n<h2>1. Definition: What is a Rotor?<\/h2>\n<p>In the broadest sense, the rotor is everything that turns as one body about the machine&#8217;s axis. It is not merely the shaft but the whole spinning system \u2014 shaft plus every part keyed, shrunk, bolted, or welded to it \u2014 together with the bearings and supporting structure that constrain its motion, collectively the <a href=\"https:\/\/vibromera.eu\/ml\/glossary\/rotor-bearing-system\/\">rotor-bearing system<\/a>. How that mass is distributed about the axis, and how stiff the shaft is relative to its operating speed, govern almost all of the rotor&#8217;s dynamic behaviour.<\/p>\n<h2>2. The Fundamental Classification: Rigid vs. Flexible Rotors<\/h2>\n<p>The most important distinction in rotor dynamics is whether a rotor behaves as a &#8220;rigid&#8221; or a &#8220;flexible&#8221; body. This classification is <em>not<\/em> based on the material&#8217;s stiffness but on the relationship between the machine&#8217;s operating speed and the rotor&#8217;s <a href=\"https:\/\/vibromera.eu\/ml\/glossary\/critical-speed\/\">critical speeds<\/a> \u2014 its natural frequencies of bending. The same steel shaft can be rigid in one machine and flexible in another, purely because of the speed it runs at.<\/p>\n<h3>Rigid Rotors<\/h3>\n<p>A rotor is considered <a href=\"https:\/\/vibromera.eu\/ml\/glossary\/rigid-rotor\/\">rigid<\/a> when its operating speed sits well below its first bending critical speed \u2014 typically under about 70% of the first critical. At these speeds the shaft does not bend significantly under dynamic load, and the whole rotor can be treated as a single rigid mass.<\/p>\n<ul>\n<li><strong>Characteristics:<\/strong> tend to be shorter, stockier, and run at lower speeds.<\/li>\n<li><strong>Balancing:<\/strong> can be fully corrected with <a href=\"https:\/\/vibromera.eu\/ml\/glossary\/two-plane-balancing\/\">two-plane<\/a> <a href=\"https:\/\/vibromera.eu\/ml\/glossary\/dynamic-balancing\/\">\u0d21\u0d48\u0d28\u0d3e\u0d2e\u0d3f\u0d15\u0d4d \u0d2c\u0d3e\u0d32\u0d7b\u0d38\u0d3f\u0d19\u0d4d<\/a> under the principles of rigid-body mechanics.<\/li>\n<li><strong>Examples:<\/strong> most standard electric motors, low-speed fans, grinding wheels, and many pump impellers.<\/li>\n<\/ul>\n<h3>Flexible Rotors<\/h3>\n<p>A rotor is <a href=\"https:\/\/vibromera.eu\/ml\/glossary\/flexible-rotor\/\">flexible<\/a> when it is designed to operate close to, at, or above one or more of its bending critical speeds. As it approaches a critical speed the shaft deflects and bows significantly, taking on a characteristic bent shape \u2014 its <a href=\"https:\/\/vibromera.eu\/ml\/glossary\/mode-shape\/\">mode shape<\/a>.<\/p>\n<ul>\n<li><strong>Characteristics:<\/strong> tend to be long, slender, and run at high speeds.<\/li>\n<li><strong>Balancing:<\/strong> two-plane balancing is insufficient. Flexible rotors need <a href=\"https:\/\/vibromera.eu\/ml\/glossary\/multi-plane-balancing\/\">multi-plane methods<\/a> that account for shaft bending, including <a href=\"https:\/\/vibromera.eu\/ml\/glossary\/modal-balancing\/\">modal balancing<\/a> (correcting each mode shape individually) or multi-speed <a href=\"https:\/\/vibromera.eu\/ml\/glossary\/influence-coefficient\/\">influence-coefficient<\/a> balancing.<\/li>\n<li><strong>Examples:<\/strong> large steam and gas turbines, high-speed compressors, long drive shafts, and generator rotors.<\/li>\n<\/ul>\n<p>The design and analysis of flexible rotors is far more complex because their dynamic behaviour changes with speed. Predicting where those critical speeds fall is itself a design task; a <a href=\"https:\/\/vibromera.eu\/ml\/calculators\/rotor-critical-speed\/\">rotor critical speed calculator<\/a> gives a quick first estimate of the first bending natural frequency from shaft and bearing-span data.<\/p>\n<h2>3. Common Components of a Rotor Assembly<\/h2>\n<p>A rotor is more than just a shaft. A typical assembly can include:<\/p>\n<ul>\n<li><strong>Shaft:<\/strong> the central member that transmits torque.<\/li>\n<li><strong>Impellers, blades, or vanes:<\/strong> components that do work on a fluid in pumps, fans, and turbines.<\/li>\n<li><strong>Armature \/ windings:<\/strong> the rotating part of an electric motor or generator.<\/li>\n<li><strong>Journals:<\/strong> the highly polished shaft sections that ride inside a <a href=\"https:\/\/vibromera.eu\/ml\/glossary\/journal-bearing\/\">journal bearing<\/a>.<\/li>\n<li><strong>Couplings:<\/strong> the hubs that connect the rotor to the adjacent machine, themselves a source of trouble through <a href=\"https:\/\/vibromera.eu\/ml\/glossary\/coupling-defects\/\">coupling defects<\/a>.<\/li>\n<li><strong>Thrust collars:<\/strong> components that transfer axial force to a <a href=\"https:\/\/vibromera.eu\/ml\/glossary\/thrust-bearing\/\">thrust bearing<\/a>.<\/li>\n<li><strong>Balance rings or planes:<\/strong> the designated <a href=\"https:\/\/vibromera.eu\/ml\/glossary\/correction-plane\/\">correction planes<\/a> where a <a href=\"https:\/\/vibromera.eu\/ml\/glossary\/correction-weight\/\">correction weight<\/a> is added during balancing.<\/li>\n<\/ul>\n<h2>4. Common Problems Associated with Rotors<\/h2>\n<p>Vibration analysis is used to detect a wide range of faults that originate in the rotor assembly:<\/p>\n<ul>\n<li><strong><a href=\"https:\/\/vibromera.eu\/ml\/glossary\/unbalance\/\">Unbalance<\/a>:<\/strong> the most common problem, caused by uneven mass distribution about the axis.<\/li>\n<li><strong><a href=\"https:\/\/vibromera.eu\/ml\/glossary\/bent-shaft\/\">Bent shaft<\/a>:<\/strong> a physical bend or bow in the shaft.<\/li>\n<li><strong><a href=\"https:\/\/vibromera.eu\/ml\/glossary\/shaft-crack\/\">Shaft crack<\/a>:<\/strong> a developing fatigue crack that can lead to catastrophic failure.<\/li>\n<li><strong><a href=\"https:\/\/vibromera.eu\/ml\/glossary\/misalignment\/\">Misalignment<\/a>:<\/strong> though strictly a problem between rotors, it imposes high stresses within the rotor assembly.<\/li>\n<li><strong><a href=\"https:\/\/vibromera.eu\/ml\/glossary\/rotor-rub\/\">Rotor-stator rub<\/a>:<\/strong> contact between the rotating and stationary parts of the machine.<\/li>\n<li><strong><a href=\"https:\/\/vibromera.eu\/ml\/glossary\/looseness\/\">Looseness<\/a>:<\/strong> a loose fit of a component such as an impeller on the shaft.<\/li>\n<\/ul>\n<p>Most of these reveal themselves as distinct frequency signatures \u2014 unbalance at 1\u00d7 running speed, misalignment at 2\u00d7, looseness as a long train of harmonics \u2014 which is what lets an analyst separate one from another without disassembly.<\/p>\n<h2>5. Balancing the Rotor in the Field<\/h2>\n<p>By far the most frequent rotor fault, unbalance, is corrected by <a href=\"https:\/\/vibromera.eu\/ml\/glossary\/balancing\/\">balancing<\/a>: adding or removing small masses so the mass axis is pulled back toward the geometric axis. For an assembled machine this is done in place rather than on a balancing machine. A portable two-channel instrument such as the <a href=\"https:\/\/vibromera.eu\/ml\/product\/balanset-1\/\">\u0d2c\u0d3e\u0d32\u0d7b\u0d38\u0d46\u0d31\u0d4d\u0d31\u0d4d-1\u0d0e<\/a> measures the 1\u00d7 amplitude and phase in the rotor&#8217;s own bearings at operating speed, computes the influence coefficients, and calculates the mass and angle to add in each correction plane \u2014 capturing the rotor&#8217;s true running behaviour, including assembly and thermal effects a balancing machine never sees.<\/p>\n<hr>\n<p><a href=\"https:\/\/vibromera.eu\/ml\/glossary\/\">\u2190 Back to Main Index<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Learn about rotors, the rotating components of machinery. Understand the critical difference between rigid and flexible rotors and how their dynamics affect design and balancing.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"ai_generated_summary":"","footnotes":""},"categories":[109,111],"tags":[],"class_list":["post-221","glossary","type-glossary","status-publish","hentry","category-glossary","category-rotor-balancing"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/ml\/wp-json\/wp\/v2\/glossary\/221","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vibromera.eu\/ml\/wp-json\/wp\/v2\/glossary"}],"about":[{"href":"https:\/\/vibromera.eu\/ml\/wp-json\/wp\/v2\/types\/glossary"}],"version-history":[{"count":1,"href":"https:\/\/vibromera.eu\/ml\/wp-json\/wp\/v2\/glossary\/221\/revisions"}],"predecessor-version":[{"id":101257,"href":"https:\/\/vibromera.eu\/ml\/wp-json\/wp\/v2\/glossary\/221\/revisions\/101257"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/ml\/wp-json\/wp\/v2\/media?parent=221"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/ml\/wp-json\/wp\/v2\/categories?post=221"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/ml\/wp-json\/wp\/v2\/tags?post=221"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}