{"id":1801,"date":"2026-09-02T15:02:45","date_gmt":"2026-09-02T07:02:45","guid":{"rendered":"https:\/\/www.desondynamics.com\/a10vso-model-code-guide"},"modified":"2026-09-02T15:08:48","modified_gmt":"2026-09-02T07:08:48","slug":"a10vso-model-code-guide","status":"publish","type":"post","link":"https:\/\/www.desondynamics.com\/zh\/blog\/a10vso-model-code-guide","title":{"rendered":"A10VSO Model Code Explained: How to Read Your Axial Piston Pump"},"content":{"rendered":"<h2>Understanding the A10VSO Model Code<\/h2>\n<p>Every axial piston pump carries a model code that tells you exactly what you have. Whether you are specifying a new pump or sourcing a replacement, knowing how to read the A10VSO model code saves time and prevents costly mistakes.<\/p>\n<h3>What Each Segment of the Code Means<\/h3>\n<p>The A10VSO model code follows a fixed structure. Take the example <strong>A10VSO 71 DFR\/31R-PPA12N00<\/strong>:<\/p>\n<ul>\n<li><strong>A10VSO<\/strong> \u2014 Variable displacement axial piston pump, swashplate design, for open circuits<\/li>\n<li><strong>71<\/strong> \u2014 Size: nominal displacement of 71 cm\u00b3 per revolution<\/li>\n<li><strong>DFR<\/strong> \u2014 Control type: pressure and flow control (load sensing)<\/li>\n<li><strong>31<\/strong> \u2014 Series: 31 (industrial model, 280 bar nominal)<\/li>\n<li><strong>R<\/strong> \u2014 Direction of rotation: clockwise, viewed on the shaft end<\/li>\n<li><strong>PP<\/strong> \u2014 Ports and connection standard<\/li>\n<li><strong>A12<\/strong> \u2014 Shaft type<\/li>\n<li><strong>N00<\/strong> \u2014 Seals and special options<\/li>\n<\/ul>\n<h3>Available Sizes in the Series 31 Platform<\/h3>\n<p>The A10VSO Series 31 is available in nominal sizes from 18 to 140 cm\u00b3\/rev. Common industrial sizes include 28, 45, 71, 100 and 140.<\/p>\n<h3>Main Control Types in the Code<\/h3>\n<ul>\n<li><strong>DR<\/strong> \u2014 Constant pressure control<\/li>\n<li><strong>DFR \/ DFR1<\/strong> \u2014 Pressure and flow control (load sensing), the most common for industrial circuits<\/li>\n<li><strong>FE \/ FED<\/strong> \u2014 Electric proportional flow control<\/li>\n<li><strong>DFE1<\/strong> \u2014 Electric proportional pressure and flow (P\/Q) control<\/li>\n<\/ul>\n<h3>Why the Model Code Matters for Replacement<\/h3>\n<p>When ordering an aftermarket pump, the control type, series, size and rotation direction must all match your original unit. A mismatch in even one code segment can cause incorrect installation or poor performance. Always compare the full code from your pump nameplate against the replacement specification.<\/p>\n<p><em>This guide is provided for general reference. Model codes vary slightly between series and revisions, so always verify against the original nameplate.<\/em><\/p>","protected":false},"excerpt":{"rendered":"<p>Understanding the A10VSO Model Code Every axial piston pump carries a model code that tells you exactly what you have. Whether you are specifying a new pump or sourcing a replacement, knowing how to read the A10VSO model code saves time and prevents costly mistakes. What Each Segment of the Code Means The A10VSO model [&hellip;]<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_editorskit_title_hidden":false,"_editorskit_reading_time":0,"_editorskit_is_block_options_detached":false,"_editorskit_block_options_position":"{}","footnotes":""},"categories":[1523],"tags":[],"class_list":["post-1801","post","type-post","status-publish","format-standard","hentry","category-pump-knowledge"],"blocksy_meta":{"styles_descriptor":{"styles":{"desktop":"","tablet":"","mobile":""},"google_fonts":[],"version":7}},"_links":{"self":[{"href":"https:\/\/www.desondynamics.com\/zh\/wp-json\/wp\/v2\/posts\/1801","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.desondynamics.com\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.desondynamics.com\/zh\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/www.desondynamics.com\/zh\/wp-json\/wp\/v2\/comments?post=1801"}],"version-history":[{"count":1,"href":"https:\/\/www.desondynamics.com\/zh\/wp-json\/wp\/v2\/posts\/1801\/revisions"}],"predecessor-version":[{"id":1802,"href":"https:\/\/www.desondynamics.com\/zh\/wp-json\/wp\/v2\/posts\/1801\/revisions\/1802"}],"wp:attachment":[{"href":"https:\/\/www.desondynamics.com\/zh\/wp-json\/wp\/v2\/media?parent=1801"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.desondynamics.com\/zh\/wp-json\/wp\/v2\/categories?post=1801"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.desondynamics.com\/zh\/wp-json\/wp\/v2\/tags?post=1801"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}