{"id":2868,"date":"2024-03-07T10:50:40","date_gmt":"2024-03-07T09:50:40","guid":{"rendered":"https:\/\/www.bf-hydraulik.com\/encyclopedia\/hydraulic-oil-filter\/"},"modified":"2026-04-15T11:53:50","modified_gmt":"2026-04-15T09:53:50","slug":"hydraulic-oil-filter","status":"publish","type":"encyclopedia","link":"https:\/\/www.bf-hydraulik.com\/en\/hydraulic-oil-filter\/","title":{"rendered":"Hydraulic Oil Filter"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"2868\" class=\"elementor elementor-2868 elementor-648\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-735b55f8 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"735b55f8\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-2820cb8b\" data-id=\"2820cb8b\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-9fb9997 elementor-widget elementor-widget-text-editor\" data-id=\"9fb9997\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h1>Hydraulic Oil Filters for Improved Function &amp; Lifespan<\/h1><p>The <a href=\"https:\/\/www.bf-hydraulik.com\/en\/hydraulic-oil-filter\/\" target=\"_self\" title=\"Hydraulic Oil Filters for Improved Function &amp; LifespanThe hydraulic oil filter is an important component in larger hydraulic systems for improving function and extending lifespan. The market offers filters in&hellip;\" class=\"encyclopedia\">hydraulic oil filter<\/a> is an important component in larger <a href=\"https:\/\/www.bf-hydraulik.com\/hydraulische-anlagen.html\">hydraulic systems<\/a> for improving function and extending lifespan. The market offers filters in various grades, allowing the right <a href=\"https:\/\/www.bf-hydraulik.com\/en\/hydraulic-oil-filter\/\" target=\"_self\" title=\"Hydraulic Oil Filters for Improved Function &amp; LifespanThe hydraulic oil filter is an important component in larger hydraulic systems for improving function and extending lifespan. The market offers filters in&hellip;\" class=\"encyclopedia\">hydraulic oil filter<\/a> to be precisely selected for each system.  <\/p><h2>Contamination in Hydraulic Systems<\/h2><p>Even meticulously maintained <a href=\"https:\/\/www.bf-hydraulik.com\/en\/hydraulic-system\/\" target=\"_self\" title=\"Hydraulic system: design &amp; applications explained simplyA hydraulic system is used to apply large forces in a targeted manner over a defined distance with minimal effort. The underlying hydraulic principle&hellip;\" class=\"encyclopedia\">hydraulic system<\/a>s are not free from contamination. Dirt particles originate within the system and are introduced from external sources. Common causes for the internal formation of dirt particles include:  <\/p><ul><li>Abrasion<\/li><li>Hardening<\/li><li><a href=\"https:\/\/www.bf-hydraulik.com\/en\/cavitation\/\" target=\"_self\" title=\"Cavitation in Hydraulic Systems: Internal DestructionAfter oil contamination, cavitation is one of the most common causes of damage in hydraulic systems. It occurs when hydraulic components are not optimally matched&hellip;\" class=\"encyclopedia\">Cavitation<\/a> Damage <\/li><\/ul><h3>Abrasion &ndash; Hydraulic Oil Filters Protect<\/h3><p>Abrasion occurs on all moving parts. In a <a href=\"https:\/\/www.bf-hydraulik.com\/en\/hydraulic-system\/\" target=\"_self\" title=\"Hydraulic system: design &amp; applications explained simplyA hydraulic system is used to apply large forces in a targeted manner over a defined distance with minimal effort. The underlying hydraulic principle&hellip;\" class=\"encyclopedia\">hydraulic system<\/a>, these are primarily the pumps and actuators. Even valves with little movement can generate small amounts of abrasion, which then float freely in the volume flow. There, they can cause secondary damage to seals and branches.   <\/p><h3>Hardening &ndash; Captured by the Hydraulic Oil Filter<\/h3><p>Hardening in hydraulic oil occurs due to overheating. When subjected to excessive thermal stress, hydraulic oils form microscopic solid particles. These settle as sticky deposits in areas with lower volume flow. Overheated hydraulic oil can also dissolve seals. Their particles then also float in the volume flow and can cause secondary damage.    <\/p><h3>Cavitation Damage &ndash; Prevented by Hydraulic Filters<\/h3><p><a href=\"https:\/\/www.bf-hydraulik.com\/en\/cavitation\/\" target=\"_self\" title=\"Cavitation in Hydraulic Systems: Internal DestructionAfter oil contamination, cavitation is one of the most common causes of damage in hydraulic systems. It occurs when hydraulic components are not optimally matched&hellip;\" class=\"encyclopedia\">Cavitation<\/a> damage occurs due to unfavorable volume flows along valves, branches, constrictions, or at the tip of pump rotors. Cavity means &ldquo;hollow space&rdquo;. In the volume flow, this describes small vacuum bubbles that collapse immediately after their formation. The resulting shock wave has an abrasive effect on adjacent metal objects or sealing rubber.   <\/p><p>Most foreign particles enter the volume flow from outside. Unprofessional valve changes, lack of care during machining operations, or contaminated fresh oil are the most common causes. <\/p><h3>Hydraulic Filters Stop Contamination<\/h3><p>Due to the variety of possible causes for hydraulic oil contamination, the use of filters is mandatory in larger systems. Especially with motor-driven pumps, heat generation is always accompanied by a certain risk of overheating. Errors in the cooling system or a slowdown in the volume flow can lead to heat accumulation. This has the described effects (see hardening). A filter captures the free-floating particles and reliably retains them.    <\/p><h3>Proper Handling of a Hydraulic Oil Filter<\/h3><p>If a <a href=\"https:\/\/www.bf-hydraulik.com\/en\/hydraulic-system\/\" target=\"_self\" title=\"Hydraulic system: design &amp; applications explained simplyA hydraulic system is used to apply large forces in a targeted manner over a defined distance with minimal effort. The underlying hydraulic principle&hellip;\" class=\"encyclopedia\">hydraulic system<\/a> is equipped with a filter, the manufacturer&rsquo;s specified change intervals must be observed! By using multiple filters with graded particle retention, their change interval can be synchronized with the hydraulic oil replacement time. If the <a href=\"https:\/\/www.bf-hydraulik.com\/en\/hydraulic-system\/\" target=\"_self\" title=\"Hydraulic system: design &amp; applications explained simplyA hydraulic system is used to apply large forces in a targeted manner over a defined distance with minimal effort. The underlying hydraulic principle&hellip;\" class=\"encyclopedia\">hydraulic system<\/a> is then thoroughly cleaned and inspected before the filter and oil change, it will achieve a practically unlimited lifespan.  <\/p><p>In critical and hard-to-reach areas, such as branches behind valves, an endoscopic inspection can replace extensive disassembly. This not only detects damaged areas early but also prevents new dirt from entering.  <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-17578f6\" data-id=\"17578f6\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-18d5d30 elementor-widget elementor-widget-sidebar\" data-id=\"18d5d30\" data-element_type=\"widget\" data-widget_type=\"sidebar.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div style=\"display:none;\">Search<\/div><form role=\"search\" method=\"get\" class=\"encyclopedia search-form\" action=\"https:\/\/www.bf-hydraulik.com\/en\/encyclopedia\/\">\n    \n    \n    <label class=\"screen-reader-text\" for=\"encyclopedia-search-term\">Search<\/label>\n    <input type=\"text\" 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