{"id":144,"date":"2025-10-31T00:25:51","date_gmt":"2025-10-31T00:25:51","guid":{"rendered":"https:\/\/vibromera.eu\/glossary\/impeller-defects\/"},"modified":"2026-05-23T22:43:35","modified_gmt":"2026-05-23T22:43:35","slug":"impeller-defects","status":"publish","type":"glossary","link":"https:\/\/vibromera.eu\/ay\/glossary\/impeller-defects\/","title":{"rendered":"What are Impeller Defects? Pump and Fan Damage"},"content":{"rendered":"<h1>Understanding Impeller Defects<\/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\/ay\/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\/ay\/product\/balanset-1\/\" title=\"Portable balancer &#038; Vibration analyzer 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=\"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\/ay\/product-category\/devices\/\" rel=\"tag\">Devices<\/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\/ay\/product\/balanset-1\/\" title=\"Portable balancer &#038; Vibration analyzer Balanset-1A\">Portable balancer &#038; Vibration analyzer 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\">&euro;<\/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=\"\/ay\/wp-json\/wp\/v2\/glossary\/144?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=\"\/ay\/wp-json\/wp\/v2\/glossary\/144?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\/ay\/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\/ay\/product\/vibration-sensor\/\" title=\"Vibration sensor\">\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\/ay\/product-category\/parts\/\" rel=\"tag\">Parts<\/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\/ay\/product\/vibration-sensor\/\" title=\"Vibration sensor\">Vibration sensor<\/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\">&euro;<\/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=\"\/ay\/wp-json\/wp\/v2\/glossary\/144?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=\"\/ay\/wp-json\/wp\/v2\/glossary\/144?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\/ay\/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\/ay\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Optical Sensor (Laser 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=\"Optical Sensor (Laser 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\/ay\/product-category\/parts\/\" rel=\"tag\">Parts<\/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\/ay\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Optical Sensor (Laser Tachometer)\">Optical Sensor (Laser 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\">&euro;<\/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=\"\/ay\/wp-json\/wp\/v2\/glossary\/144?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=\"\/ay\/wp-json\/wp\/v2\/glossary\/144?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\/ay\/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\/ay\/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=\"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\/ay\/product-category\/devices\/\" rel=\"tag\">Devices<\/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\/ay\/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\">&euro;<\/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=\"\/ay\/wp-json\/wp\/v2\/glossary\/144?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=\"\/ay\/wp-json\/wp\/v2\/glossary\/144?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\/ay\/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\/ay\/product\/magnet-stand\/\" title=\"Magnetic Stand 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=\"Magnet base.\" 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\/ay\/product-category\/parts\/\" rel=\"tag\">Parts<\/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 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class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/ay\/product\/dynamic-balancer-balanset-1a\/\" title=\"Dynamic balancer \u201cBalanset-1A\u201d OEM\">Dynamic balancer \u201cBalanset-1A\u201d 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\">&euro;<\/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=\"\/ay\/wp-json\/wp\/v2\/glossary\/144?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\" 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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>Impeller defects<\/strong> are the many forms of damage, wear, and deterioration that afflict pump impellers and fan wheels \u2014 vane erosion, <a href=\"https:\/\/vibromera.eu\/ay\/glossary\/corrosion\/\">corrosion<\/a>, cracks, material build-up, broken vanes, and hub damage. They are doubly damaging because they degrade both the <em>mechanical<\/em> state of the rotor (creating <a href=\"https:\/\/vibromera.eu\/ay\/glossary\/unbalance\/\">unbalance<\/a> and <a href=\"https:\/\/vibromera.eu\/ay\/glossary\/vibration\/\">vibration<\/a>) and the <em>hydraulic or aerodynamic<\/em> performance (cutting efficiency, flow, and head). The result is a recognisable vibration signature: a rising 1\u00d7 <a href=\"https:\/\/vibromera.eu\/ay\/glossary\/running-speed\/\">running-speed<\/a> component from unbalance, together with elevated <a href=\"https:\/\/vibromera.eu\/ay\/glossary\/vane-passing-frequency\/\">vane passing frequency<\/a> from disturbed flow. Impellers live in punishing service \u2014 high tip speeds, corrosive or abrasive fluids, and temperature extremes \u2014 so understanding these defects and their signatures is essential to keeping pumps and fans reliable. They are a major sub-class of broader <a href=\"https:\/\/vibromera.eu\/ay\/glossary\/pump-defects\/\">pump defects<\/a> and <a href=\"https:\/\/vibromera.eu\/ay\/glossary\/fan-defects\/\">fan defects<\/a>.<\/p>\n<h2>1. Erosion, Wear, and Corrosion<\/h2>\n<h3>Abrasive Erosion<\/h3>\n<ul>\n<li><strong>Cause:<\/strong> solid particles entrained in the fluid grind away the vane surfaces.<\/li>\n<li><strong>Pattern:<\/strong> leading edges and high-velocity zones wear fastest.<\/li>\n<li><strong>Effect:<\/strong> uneven material loss creates unbalance and reduces efficiency.<\/li>\n<li><strong>Rate:<\/strong> rises with particle concentration, hardness, and velocity.<\/li>\n<li><strong>Common in:<\/strong> slurry pumps, mining duty, and wastewater service.<\/li>\n<\/ul>\n<h3>Cavitation Erosion<\/h3>\n<ul>\n<li><strong>Mechanism:<\/strong> vapour bubbles collapse against the metal, producing intense localised pressure spikes.<\/li>\n<li><strong>Appearance:<\/strong> a sponge-like, pitted surface with material gouged away.<\/li>\n<li><strong>Locations:<\/strong> low-pressure regions such as the vane suction side and tips.<\/li>\n<li><strong>Distinctive:<\/strong> the gravelly noise of <a href=\"https:\/\/vibromera.eu\/ay\/glossary\/cavitation\/\">cavitation<\/a> accompanies the erosion.<\/li>\n<li><strong>Prevention:<\/strong> adequate NPSH and correct pump selection \u2014 confirm the suction margin with the <a href=\"https:\/\/vibromera.eu\/ay\/calculators\/npsh-calculator\/\">NPSH Calculator<\/a>.<\/li>\n<\/ul>\n<h3>Corrosion<\/h3>\n<ul>\n<li><strong>Chemical attack:<\/strong> aggressive fluids dissolve the impeller material.<\/li>\n<li><strong>Galvanic corrosion:<\/strong> dissimilar metals in contact through an electrolyte.<\/li>\n<li><strong><a href=\"https:\/\/vibromera.eu\/ay\/glossary\/pitting\/\">Pitting<\/a>:<\/strong> localised cavities that also act as stress risers.<\/li>\n<li><strong>General thinning:<\/strong> uniform loss of wall thickness across the surfaces.<\/li>\n<li><strong>Erosion-corrosion synergy:<\/strong> the two mechanisms together accelerate damage far beyond either alone.<\/li>\n<\/ul>\n<h2>2. Material Build-Up<\/h2>\n<p>Not all unbalance comes from losing metal \u2014 adding mass is just as damaging:<\/p>\n<ul>\n<li><strong>Scale formation:<\/strong> mineral deposits from hard water or process chemicals.<\/li>\n<li><strong>Biological fouling:<\/strong> algae, bacteria, or shellfish in cooling-water systems.<\/li>\n<li><strong>Process material:<\/strong> solidified product or polymer adhering to the vanes.<\/li>\n<li><strong>Effect:<\/strong> asymmetric deposits create unbalance, shrink the flow passages, and alter the hydraulics.<\/li>\n<li><strong>Symptom:<\/strong> a slow, progressive climb in 1\u00d7 vibration.<\/li>\n<\/ul>\n<h2>3. Vane, Hub, and Geometric Defects<\/h2>\n<h3>Cracks<\/h3>\n<ul>\n<li><strong>Fatigue cracks:<\/strong> from cyclic stress, usually at the vane-to-shroud junctions.<\/li>\n<li><strong>Stress-corrosion cracks:<\/strong> the combination of tensile stress and a corrosive environment.<\/li>\n<li><strong>Thermal cracks:<\/strong> from temperature cycling or thermal shock.<\/li>\n<li><strong>Detection:<\/strong> vane-passing-frequency <a href=\"https:\/\/vibromera.eu\/ay\/glossary\/sidebands\/\">sidebands<\/a> and a shifting vibration pattern.<\/li>\n<\/ul>\n<h3>Broken Vanes<\/h3>\n<ul>\n<li><strong>Complete failure:<\/strong> a vane or a piece of one breaks away.<\/li>\n<li><strong>Severe unbalance:<\/strong> the sudden mass loss drives a large step increase in 1\u00d7 vibration.<\/li>\n<li><strong>Hydraulic asymmetry:<\/strong> an abnormal vane-passing-frequency pattern.<\/li>\n<li><strong>Immediate action:<\/strong> shut down and replace \u2014 broken pieces can wreck the casing and seals.<\/li>\n<\/ul>\n<h3>Hub, Mounting, and Geometric Faults<\/h3>\n<ul>\n<li><strong>Loose on shaft:<\/strong> a worn keyway or an inadequate interference fit, often appearing as <a href=\"https:\/\/vibromera.eu\/ay\/glossary\/looseness\/\">mechanical looseness<\/a>.<\/li>\n<li><strong>Cracked hub or damaged keyway:<\/strong> stress cracks and broaching that let the impeller shift.<\/li>\n<li><strong>Geometric errors:<\/strong> out-of-round running from manufacture or damage (a form of <a href=\"https:\/\/vibromera.eu\/ay\/glossary\/eccentricity\/\">eccentricity<\/a>), warping, and unequal vane spacing \u2014 all of which generate unbalance and hydraulic pulsations.<\/li>\n<\/ul>\n<h2>4. Vibration Signatures<\/h2>\n<h3>1\u00d7 Unbalance Component<\/h3>\n<ul>\n<li><strong>Erosion or build-up:<\/strong> asymmetric mass change produces a gradual 1\u00d7 increase.<\/li>\n<li><strong>Broken vane:<\/strong> a sudden, large 1\u00d7 jump.<\/li>\n<li><strong>Correction:<\/strong> mass-related unbalance often responds well to <a href=\"https:\/\/vibromera.eu\/ay\/glossary\/field-balancing\/\">field balancing<\/a>.<\/li>\n<\/ul>\n<h3>Vane Passing Frequency<\/h3>\n<ul>\n<li><strong>Damaged vanes:<\/strong> elevated VPF flanked by sidebands at \u00b11\u00d7.<\/li>\n<li><strong>Missing vane:<\/strong> an abnormal VPF pattern, sometimes with subharmonics.<\/li>\n<li><strong>Clearance problems and operating point:<\/strong> VPF amplitude rises with tight clearances and varies with flow rate \u2014 chronic low flow can trigger internal <a href=\"https:\/\/vibromera.eu\/ay\/glossary\/recirculation\/\">recirculation<\/a> that compounds the hydraulic noise.<\/li>\n<\/ul>\n<h3>Looseness Pattern<\/h3>\n<p>A loose impeller behaves quite differently from a simple heavy spot: it raises a series of <a href=\"https:\/\/vibromera.eu\/ay\/glossary\/harmonics\/\">harmonics<\/a> (1\u00d7, 2\u00d7, 3\u00d7), produces erratic, non-repeatable vibration, and destabilises the <a href=\"https:\/\/vibromera.eu\/ay\/glossary\/phase\/\">phase<\/a> reading \u2014 which makes effective balancing impossible until the looseness is fixed.<\/p>\n<h2>5. Detection Methods<\/h2>\n<h3>Vibration Analysis<\/h3>\n<ul>\n<li>Trend the overall level, the 1\u00d7 amplitude for unbalance, and the VPF amplitude for vane and hydraulic condition.<\/li>\n<li>Use broadband and envelope analysis to catch cavitation and developing <a href=\"https:\/\/vibromera.eu\/ay\/glossary\/bearing-fault-frequencies\/\">bearing fault frequencies<\/a>.<\/li>\n<\/ul>\n<h3>Performance Testing<\/h3>\n<ul>\n<li><strong>Flow rate:<\/strong> a drop from baseline indicates wear.<\/li>\n<li><strong>Discharge pressure:<\/strong> reduced head points to damage.<\/li>\n<li><strong>Power consumption:<\/strong> shifts reveal efficiency loss.<\/li>\n<li><strong>Pump-curve test:<\/strong> compare measured performance against the design or baseline curve.<\/li>\n<\/ul>\n<h3>Visual Inspection<\/h3>\n<ul>\n<li>Borescope through casing ports between outages, and inspect fully at overhaul.<\/li>\n<li>Photograph for documentation and trending, measure vane thickness, and grade the erosion or corrosion severity.<\/li>\n<\/ul>\n<h2>6. Prevention, Mitigation, and Field Correction<\/h2>\n<h3>Material Selection and Operating Practice<\/h3>\n<ul>\n<li>Choose erosion-resistant materials (hard alloys, ceramics) for abrasive duty and corrosion-resistant alloys (316 SS, Hastelloy, titanium) or protective coatings for chemical service.<\/li>\n<li>Run near the best efficiency point to minimise hydraulic stress, maintain adequate NPSH to avoid cavitation, and control fluid chemistry and solids loading.<\/li>\n<\/ul>\n<h3>Maintenance and Rebalancing<\/h3>\n<p>Inspect impellers during outages, clean build-up before it grows into a serious heavy spot, and always rebalance after cleaning or repair. On assembled machines this rebalancing is done in place rather than on a balancing machine. A portable two-channel analyser such as the <a href=\"https:\/\/vibromera.eu\/ay\/product\/balanset-1\/\">Balanset-1A<\/a> measures the 1\u00d7 amplitude and phase, computes the correction weights, and verifies the result against the relevant balance grade while the impeller turns in its own bearings at operating speed \u2014 ideal when erosion or fouling has knocked a pump or fan rotor out of balance. Because a fan wheel often has only discrete bolt positions for weights, the <a href=\"https:\/\/vibromera.eu\/ay\/calculators\/blade-correction-calculator\/\">Blade Correction Calculator<\/a> helps translate the computed correction into masses placed at fixed blade locations. Documenting wear rates over successive inspections then supports life prediction and lets you replace an impeller before its performance becomes unacceptable.<\/p>\n<hr>\n<p><a href=\"https:\/\/vibromera.eu\/ay\/glossary\/\">\u2190 Back to Main Index<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Learn about impeller defects including vane damage, erosion, corrosion, and unbalance in pumps and fans, causing vibration at vane passing frequency and reduced performance.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"ai_generated_summary":"","footnotes":""},"categories":[109,110],"tags":[],"class_list":["post-144","glossary","type-glossary","status-publish","hentry","category-glossary","category-vibration-diagnostics"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/ay\/wp-json\/wp\/v2\/glossary\/144","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vibromera.eu\/ay\/wp-json\/wp\/v2\/glossary"}],"about":[{"href":"https:\/\/vibromera.eu\/ay\/wp-json\/wp\/v2\/types\/glossary"}],"version-history":[{"count":1,"href":"https:\/\/vibromera.eu\/ay\/wp-json\/wp\/v2\/glossary\/144\/revisions"}],"predecessor-version":[{"id":101339,"href":"https:\/\/vibromera.eu\/ay\/wp-json\/wp\/v2\/glossary\/144\/revisions\/101339"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/ay\/wp-json\/wp\/v2\/media?parent=144"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/ay\/wp-json\/wp\/v2\/categories?post=144"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/ay\/wp-json\/wp\/v2\/tags?post=144"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}