{"id":47524,"date":"2025-06-16T19:15:00","date_gmt":"2025-06-16T19:15:00","guid":{"rendered":"https:\/\/ncservo.com\/?post_type=product&#038;p=47524"},"modified":"2026-03-25T17:37:11","modified_gmt":"2026-03-25T17:37:11","slug":"rexroth-0811404646","status":"publish","type":"product","link":"https:\/\/ncservo.com\/.wp-toolkit_m\/product\/rexroth-0811404646\/","title":{"rendered":"REXROTH 0811-404-646"},"content":{"rendered":"<div id=\"wb-overview\" class=\"wordbank-container\">\n<h2>Valve Overview<\/h2>\n<p>We&#8217;ve serviced hundreds of REXROTH 0811-404-646 units over the years. Each one goes through the same controlled teardown, parts replacement, and testing process.<\/p>\n<\/div>\n<div id=\"wb-what-we-do\" class=\"wordbank-container\">\n<h2>Teardown and Rebuild Steps<\/h2>\n<p>We specialize in the overhaul of your REXROTH 0811-404-646, including the replacement of all necessary gaskets and worn components.<\/p>\n<\/div>\n<div id=\"wb-faq\" class=\"wordbank-container\">\n<h2>Frequently Asked Questions<\/h2>\n<div class=\"faq-accordion\">\n<div class=\"faq-item\">\n<h3><button aria-expanded=\"true\" aria-controls=\"faq-content-0\">Can I request rush service on a repair?<\/button><\/h3>\n<div id=\"faq-content-0\" class=\"faq-content\">\n<p>Yes, rush service is available for an additional fee. Let us know your deadline when you submit your request.<\/p>\n<\/div><\/div>\n<div class=\"faq-item\">\n<h3><button aria-expanded=\"true\" aria-controls=\"faq-content-1\">What&#8217;s your guarantee on repaired units?<\/button><\/h3>\n<div id=\"faq-content-1\" class=\"faq-content\">\n<p>Yes, our standard 1-year parts and labor warranty is standard on all repairs. Details are provided with your service report.<\/p>\n<\/div><\/div>\n<div class=\"faq-item\">\n<h3><button aria-expanded=\"true\" aria-controls=\"faq-content-2\">What if the model number is missing or unreadable&#8212;can you still service the unit?<\/button><\/h3>\n<div id=\"faq-content-2\" class=\"faq-content\">\n<p>Even if the tag is worn off, we can often match the unit based on shape, size, and internal configuration.<\/p>\n<\/div><\/div>\n<div class=\"faq-item\">\n<h3><button aria-expanded=\"true\" aria-controls=\"faq-content-3\">Is it okay to send a dirty or used unit?<\/button><\/h3>\n<div id=\"faq-content-3\" class=\"faq-content\">\n<p>No cleaning required. Our repair process includes disassembly and cleaning of all components.<\/p>\n<\/div><\/div>\n<div class=\"faq-item\">\n<h3><button aria-expanded=\"true\" aria-controls=\"faq-content-4\">Is it better to refurbish or buy a new unit?<\/button><\/h3>\n<div id=\"faq-content-4\" class=\"faq-content\">\n<p>We give you a straight assessment after inspection. If repair doesn&#8217;t make sense, we&#8217;ll let you know and discuss alternatives.<\/p>\n<\/div><\/div>\n<\/p><\/div>\n<\/div>\n<div id=\"wb-why-us\" class=\"wordbank-container\">\n<h2>About Our Shop<\/h2>\n<p>We stock common wear parts in-house, so most rebuilds don&#8217;t require outside sourcing. Less waiting, faster turnaround.<\/p>\n<p>One-year warranty on all REXROTH 0811-404-646 valve repairs<\/p>\n<\/div>\n<div id=\"wb-process\" class=\"wordbank-container\">\n<h2>Repair Process<\/h2>\n<p>Each valve goes through teardown to expose wear and buildup. After mineral bath cleaning, we replace damaged parts and reassemble the unit to spec.<\/p>\n<ul>\n<li>Complete Disassembly: The unit is disassembled and all parts are laid out for individual inspection.<\/li>\n<li>Seal and Gasket Replacement: Worn seals and gaskets are replaced with new components during every rebuild.<\/li>\n<li>Leak and Pressure Testing: The reassembled unit is leak-tested and pressure-tested to verify it meets published specs.<\/li>\n<li>Final Performance Verification: After reassembly, each valve is bench-tested against published performance specifications.<\/li>\n<\/ul>\n<\/div>\n<div id=\"wb-testing\" class=\"wordbank-container\">\n<h2>Leak and Performance Testing<\/h2>\n<p>We carry out full diagnostics on every valve, including flow gain, leakage, pressure shift, and frequency testing. Our test facility supports performance logging and report generation. Our performance testing verifies proper functionality.<\/p>\n<\/div>\n<div id=\"wb-tech-overview\" class=\"wordbank-container new-dynamic-section\">\n<h2>REXROTH 0811-404-646 Specifications<\/h2>\n<p>Every REXROTH 0811-404-646 we service is tested under typical applications. Our diagnostics verify performance against published specifications. Performance data and Technical diagrams are available for purchase upon request.<\/p>\n<\/div>\n<div id=\"wb-service-offerings\" class=\"wordbank-container new-dynamic-section\">\n<h2>Repair, Rebuild and Exchange Options<\/h2>\n<p>Beyond standard refurbishment, we offer specialized repairs for your REXROTH 0811-404-646 unit. Our disassembly process includes pressure testing and internal inspection, using only replacement replacement components.<\/p>\n<\/div>\n<div id=\"wb-tips\" class=\"wordbank-container\">\n<h2>Maintenance Tips<\/h2>\n<ul>\n<li>Monitor operating temperatures to identify potential issues before failure occurs.<\/li>\n<li>Schedule preventive maintenance intervals based on duty cycle, not just calendar time.<\/li>\n<li>Check valve alignment carefully to prevent undue stress on internal components.<\/li>\n<\/ul>\n<\/div>\n<div id=\"wb-cta\" class=\"wordbank-container\">\n<div class=\"cta-section\">\n<h2>Need Your REXROTH 0811-404-646 Back Online?<\/h2>\n<p>Request pricing, availability, and turnaround for your REXROTH 0811-404-646. NC Servo Technology provides experienced repair with a 1-year warranty. Contact us to set up your repair.<\/p>\n<div class=\"cta-buttons\"><a href=\"https:\/\/ncservo.com\/.wp-toolkit_m\/contact-us\/\" class=\"button quote-button\">Request a Quote<\/a> <a href=\"https:\/\/ncservo.com\/.wp-toolkit_m\/rexroth\/\" class=\"button brand-button\">View All REXROTH Products<\/a> <a href=\"https:\/\/ncservo.com\/.wp-toolkit_m\/brand\/rexroth\/\" class=\"button inventory-button\">Shop REXROTH Inventory<\/a><\/div>\n<\/div>\n<\/div>\n<div class=\"disclaimer-section\">\n<p class=\"disclaimer\"><strong>NC Servo Technology<\/strong> is an independent third-party repair facility. We are not affiliated with, endorsed by, sponsored by, or authorized by REXROTH or any original equipment manufacturer (OEM), nor do we claim to be a REXROTH service center. All brand names, trademarks, model numbers, and part numbers referenced on this page are the property of their respective owners and are used solely for identification and compatibility purposes.<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<div id=\"wb-short-description\" class=\"short-description-container\">\n<p>Need your REXROTH 0811-404-646 repaired right the first time? With 50+ years of hydraulic experience and 17,000+ units in stock, we have the parts and the know-how.<\/p>\n<\/div>\n","protected":false},"featured_media":58018,"template":"","meta":[],"product_brand":[562],"product_cat":[2464],"product_tag":[152],"class_list":{"0":"post-47524","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_brand-rexroth","7":"product_cat-rexroth-hydraulic-valves","8":"product_tag-valve","10":"first","11":"outofstock","12":"shipping-taxable","13":"product-type-simple"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>REXROTH 0811-404-646 Servo Valve Repair &amp; Testing<\/title>\n<meta name=\"description\" content=\"NC Servo repairs your tested, cost-effective valve repair for your REXROTH 0811-404-646. 17,000+ valves in stock for fast turnaround. 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