{"id":917,"date":"2026-08-19T05:34:13","date_gmt":"2026-08-19T05:34:13","guid":{"rendered":"https:\/\/cylinders-rod.top\/blog\/how-to-size-hydraulic-cylinder-bore-force-pressure\/"},"modified":"2026-08-19T06:52:12","modified_gmt":"2026-08-19T06:52:12","slug":"how-to-size-hydraulic-cylinder-bore-force-pressure","status":"publish","type":"post","link":"https:\/\/cylinders-rod.top\/ru\/how-to-size-hydraulic-cylinder-bore-force-pressure\/","title":{"rendered":"\u041a\u0430\u043a \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0438\u0442\u044c \u0434\u0438\u0430\u043c\u0435\u0442\u0440 \u0433\u0438\u0434\u0440\u0430\u0432\u043b\u0438\u0447\u0435\u0441\u043a\u043e\u0433\u043e \u0446\u0438\u043b\u0438\u043d\u0434\u0440\u0430, \u0438\u0441\u0445\u043e\u0434\u044f \u0438\u0437 \u0441\u0438\u043b\u044b \u0438 \u0434\u0430\u0432\u043b\u0435\u043d\u0438\u044f."},"content":{"rendered":"<p>Size from the machine\u2019s required thrust at the worst linkage position, not from a familiar bore. The core relationship is force = pressure \u00d7 effective area, but available pressure and effective area change with circuit direction.<\/p>\n<h2>1. Convert Machine Load to Cylinder Thrust<\/h2>\n<p>Payload and cylinder force differ when levers and angles are involved. Use the worst geometry and include friction\/acceleration as appropriate.<\/p>\n<h2>2. Choose Working Pressure<\/h2>\n<p>Use expected pressure at the cylinder under flow. Keep relief pressure as a protection setting unless the circuit defines it as the working point.<\/p>\n<h2>3. Calculate Bore<\/h2>\n<p>Divide required thrust by working pressure to get piston area, convert area to diameter, choose a practical bore and repeat the force check.<\/p>\n<h2>4. Check Retraction and Speed<\/h2>\n<p>Retraction uses annulus area, producing different force and speed. Flow demand rises with effective area for a given velocity.<\/p>\n<h2>5. Screen Rod Buckling<\/h2>\n<p>Long compression strokes require a column-stability check based on rod stiffness, effective length and mounting.<\/p>\n<div class=\"cr-product-grid\"><article class=\"cr-product-card\"><a href=\"https:\/\/cylinders-rod.top\/ru\/product\/compact-dc-hydraulic-power-unit\/\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"111\" src=\"https:\/\/cylinders-rod.top\/wp-content\/uploads\/2026\/08\/ai-power-unit-300x111.jpg\" class=\"attachment-medium size-medium wp-post-image\" alt=\"\" srcset=\"https:\/\/cylinders-rod.top\/wp-content\/uploads\/2026\/08\/ai-power-unit-300x111.jpg 300w, https:\/\/cylinders-rod.top\/wp-content\/uploads\/2026\/08\/ai-power-unit-18x7.jpg 18w, https:\/\/cylinders-rod.top\/wp-content\/uploads\/2026\/08\/ai-power-unit.jpg 500w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><div class=\"cr-product-card-body\"><h3>\u041a\u043e\u043c\u043f\u0430\u043a\u0442\u043d\u044b\u0439 \u0433\u0438\u0434\u0440\u0430\u0432\u043b\u0438\u0447\u0435\u0441\u043a\u0438\u0439 \u0441\u0438\u043b\u043e\u0432\u043e\u0439 \u0430\u0433\u0440\u0435\u0433\u0430\u0442 \u043f\u043e\u0441\u0442\u043e\u044f\u043d\u043d\u043e\u0433\u043e \u0442\u043e\u043a\u0430 \u0441\u0435\u0440\u0438\u0438 EP-HPU-DC<\/h3><p>\u041a\u043e\u043c\u043f\u0430\u043a\u0442\u043d\u044b\u0439 \u0433\u0438\u0434\u0440\u0430\u0432\u043b\u0438\u0447\u0435\u0441\u043a\u0438\u0439 \u0441\u0438\u043b\u043e\u0432\u043e\u0439 \u0430\u0433\u0440\u0435\u0433\u0430\u0442 EP-HPU-DC \u0441 \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u044c\u044e \u043d\u0430\u0441\u0442\u0440\u043e\u0439\u043a\u0438 \u0434\u043b\u044f \u0440\u0430\u0431\u043e\u0442\u044b \u0441 \u0446\u0438\u043b\u0438\u043d\u0434\u0440\u0438\u0447\u0435\u0441\u043a\u0438\u043c\u0438 \u043a\u043e\u043d\u0442\u0443\u0440\u0430\u043c\u0438, \u043f\u0438\u0442\u0430\u0435\u043c\u044b\u043c\u0438 \u043e\u0442 \u0430\u043a\u043a\u0443\u043c\u0443\u043b\u044f\u0442\u043e\u0440\u0430 \u0438\u043b\u0438 \u0442\u0440\u0430\u043d\u0441\u043f\u043e\u0440\u0442\u043d\u043e\u0433\u043e \u0441\u0440\u0435\u0434\u0441\u0442\u0432\u0430.<\/p><\/div><\/a><\/article><article class=\"cr-product-card\"><a href=\"https:\/\/cylinders-rod.top\/ru\/product\/ac-hydraulic-power-unit\/\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"111\" src=\"https:\/\/cylinders-rod.top\/wp-content\/uploads\/2026\/08\/ai-power-unit-300x111.jpg\" class=\"attachment-medium size-medium wp-post-image\" alt=\"\" srcset=\"https:\/\/cylinders-rod.top\/wp-content\/uploads\/2026\/08\/ai-power-unit-300x111.jpg 300w, https:\/\/cylinders-rod.top\/wp-content\/uploads\/2026\/08\/ai-power-unit-18x7.jpg 18w, https:\/\/cylinders-rod.top\/wp-content\/uploads\/2026\/08\/ai-power-unit.jpg 500w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><div class=\"cr-product-card-body\"><h3>\u0413\u0438\u0434\u0440\u0430\u0432\u043b\u0438\u0447\u0435\u0441\u043a\u0438\u0439 \u0441\u0438\u043b\u043e\u0432\u043e\u0439 \u0430\u0433\u0440\u0435\u0433\u0430\u0442 \u043f\u0435\u0440\u0435\u043c\u0435\u043d\u043d\u043e\u0433\u043e \u0442\u043e\u043a\u0430 \u0441\u0435\u0440\u0438\u0438 EP-HPU-AC<\/h3><p>\u041a\u043e\u043d\u0444\u0438\u0433\u0443\u0440\u0438\u0440\u0443\u0435\u043c\u044b\u0439 \u0433\u0438\u0434\u0440\u0430\u0432\u043b\u0438\u0447\u0435\u0441\u043a\u0438\u0439 \u0441\u0438\u043b\u043e\u0432\u043e\u0439 \u0430\u0433\u0440\u0435\u0433\u0430\u0442 \u043f\u0435\u0440\u0435\u043c\u0435\u043d\u043d\u043e\u0433\u043e \u0442\u043e\u043a\u0430 EP-HPU-AC \u0434\u043b\u044f \u0441\u0442\u0430\u0446\u0438\u043e\u043d\u0430\u0440\u043d\u044b\u0445 \u043f\u0440\u043e\u043c\u044b\u0448\u043b\u0435\u043d\u043d\u044b\u0445 \u0446\u0438\u043b\u0438\u043d\u0434\u0440\u043e\u0432\u044b\u0445 \u0441\u0438\u0441\u0442\u0435\u043c.<\/p><\/div><\/a><\/article><article class=\"cr-product-card\"><a href=\"https:\/\/cylinders-rod.top\/ru\/product\/custom-hydraulic-power-unit-system\/\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"111\" src=\"https:\/\/cylinders-rod.top\/wp-content\/uploads\/2026\/08\/ai-power-unit-300x111.jpg\" class=\"attachment-medium size-medium wp-post-image\" alt=\"\" srcset=\"https:\/\/cylinders-rod.top\/wp-content\/uploads\/2026\/08\/ai-power-unit-300x111.jpg 300w, https:\/\/cylinders-rod.top\/wp-content\/uploads\/2026\/08\/ai-power-unit-18x7.jpg 18w, https:\/\/cylinders-rod.top\/wp-content\/uploads\/2026\/08\/ai-power-unit.jpg 500w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><div class=\"cr-product-card-body\"><h3>\u0413\u0438\u0434\u0440\u0430\u0432\u043b\u0438\u0447\u0435\u0441\u043a\u0438\u0439 \u0441\u0438\u043b\u043e\u0432\u043e\u0439 \u0430\u0433\u0440\u0435\u0433\u0430\u0442 \u0438 \u043a\u043b\u0430\u043f\u0430\u043d\u043d\u0430\u044f \u0441\u0438\u0441\u0442\u0435\u043c\u0430 \u0441\u0435\u0440\u0438\u0438 EP-HPU-SYS, \u0438\u0437\u0433\u043e\u0442\u043e\u0432\u043b\u0435\u043d\u043d\u044b\u0435 \u043d\u0430 \u0437\u0430\u043a\u0430\u0437.<\/h3><p>\u0413\u0438\u0434\u0440\u0430\u0432\u043b\u0438\u0447\u0435\u0441\u043a\u0438\u0439 \u0441\u0438\u043b\u043e\u0432\u043e\u0439 \u0430\u0433\u0440\u0435\u0433\u0430\u0442 EP-HPU-SYS \u0438 \u0441\u0438\u0441\u0442\u0435\u043c\u0430 \u043a\u043b\u0430\u043f\u0430\u043d\u043d\u043e-\u043a\u043e\u043b\u043b\u0435\u043a\u0442\u043e\u0440\u043d\u043e\u0433\u043e \u043c\u0435\u0445\u0430\u043d\u0438\u0437\u043c\u0430, \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0430\u043d\u043d\u044b\u0435 \u0441 \u0443\u0447\u0435\u0442\u043e\u043c \u043e\u0441\u043e\u0431\u0435\u043d\u043d\u043e\u0441\u0442\u0435\u0439 \u0446\u0438\u043b\u0438\u043d\u0434\u0440\u0438\u0447\u0435\u0441\u043a\u043e\u0433\u043e \u043a\u043e\u043d\u0442\u0443\u0440\u0430 \u0438 \u0440\u0435\u0436\u0438\u043c\u0430 \u0440\u0430\u0431\u043e\u0442\u044b.<\/p><\/div><\/a><\/article><article class=\"cr-product-card\"><a href=\"https:\/\/cylinders-rod.top\/ru\/product\/wp-welded-through-hole-cylinder\/\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"135\" src=\"https:\/\/cylinders-rod.top\/wp-content\/uploads\/2026\/08\/wp-through-hole-cylinder-300x135.jpg\" class=\"attachment-medium size-medium wp-post-image\" alt=\"\" srcset=\"https:\/\/cylinders-rod.top\/wp-content\/uploads\/2026\/08\/wp-through-hole-cylinder-300x135.jpg 300w, https:\/\/cylinders-rod.top\/wp-content\/uploads\/2026\/08\/wp-through-hole-cylinder-768x345.jpg 768w, https:\/\/cylinders-rod.top\/wp-content\/uploads\/2026\/08\/wp-through-hole-cylinder-18x8.jpg 18w, https:\/\/cylinders-rod.top\/wp-content\/uploads\/2026\/08\/wp-through-hole-cylinder-600x269.jpg 600w, https:\/\/cylinders-rod.top\/wp-content\/uploads\/2026\/08\/wp-through-hole-cylinder.jpg 893w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><div class=\"cr-product-card-body\"><h3>\u0413\u0438\u0434\u0440\u0430\u0432\u043b\u0438\u0447\u0435\u0441\u043a\u0438\u0439 \u0446\u0438\u043b\u0438\u043d\u0434\u0440 \u0441\u0435\u0440\u0438\u0438 EP-WP \u0441 \u043f\u0440\u0438\u0432\u0430\u0440\u043d\u044b\u043c \u0441\u043a\u0432\u043e\u0437\u043d\u044b\u043c \u043e\u0442\u0432\u0435\u0440\u0441\u0442\u0438\u0435\u043c, \u0434\u0430\u0432\u043b\u0435\u043d\u0438\u0435 3000 PSI.<\/h3><p>\u0421\u0435\u0440\u0438\u044f \u0441\u0432\u0430\u0440\u043d\u044b\u0445 \u0446\u0438\u043b\u0438\u043d\u0434\u0440\u043e\u0432 EP-WP \u0441 \u043e\u0442\u0432\u0435\u0440\u0441\u0442\u0438\u044f\u043c\u0438, \u0433\u0430\u0431\u0430\u0440\u0438\u0442\u043d\u044b\u043c\u0438 \u0440\u0430\u0437\u043c\u0435\u0440\u0430\u043c\u0438, \u0434\u0430\u043d\u043d\u044b\u043c\u0438 \u043e \u0434\u0430\u0432\u043b\u0435\u043d\u0438\u0438, \u043d\u0430\u0433\u0440\u0443\u0437\u043a\u0435 \u043d\u0430 \u043a\u043e\u043b\u043e\u043d\u043d\u0443 \u0438 \u0445\u0430\u0440\u0430\u043a\u0442\u0435\u0440\u0438\u0441\u0442\u0438\u043a\u0430\u0445 \u043f\u043e\u0440\u0442\u043e\u0432.<\/p><\/div><\/a><\/article><\/div>\n<h2>Frequently Asked Questions<\/h2>\n<div class=\"cr-faq\">\n<details>\n<summary>What number comes first?<\/summary>\n<p>Required cylinder thrust at worst geometry plus pressure available at the actuator.<\/p>\n<\/details>\n<details>\n<summary>Why not use relief pressure?<\/summary>\n<p>It is a protection setting and may not equal normal pressure at the cylinder.<\/p>\n<\/details>\n<details>\n<summary>Why do extend\/retract differ?<\/summary>\n<p>The rod removes pressure area on retraction.<\/p>\n<\/details>\n<details>\n<summary>How does bore affect speed?<\/summary>\n<p>A larger area needs more flow for the same speed.<\/p>\n<\/details>\n<details>\n<summary>When check buckling?<\/summary>\n<p>For slender rods carrying compression over long effective length.<\/p>\n<\/details>\n<\/div>\n<section class=\"cr-cta\">\n<h2>\u041e\u0431\u0441\u0443\u0434\u0438\u0442\u0435 \u0432\u0430\u0448\u0438 \u0442\u0440\u0435\u0431\u043e\u0432\u0430\u043d\u0438\u044f \u043a \u0433\u0438\u0434\u0440\u0430\u0432\u043b\u0438\u0447\u0435\u0441\u043a\u043e\u0439 \u0441\u0438\u0441\u0442\u0435\u043c\u0435.<\/h2>\n<p>\u0423\u043a\u0430\u0436\u0438\u0442\u0435 \u0434\u0438\u0430\u043c\u0435\u0442\u0440 \u0446\u0438\u043b\u0438\u043d\u0434\u0440\u0430, \u0445\u043e\u0434 \u043f\u043e\u0440\u0448\u043d\u044f, \u0441\u043f\u043e\u0441\u043e\u0431 \u043a\u0440\u0435\u043f\u043b\u0435\u043d\u0438\u044f, \u0434\u0430\u0432\u043b\u0435\u043d\u0438\u0435, \u043a\u0430\u043d\u0430\u043b\u044b, \u043d\u0430\u0433\u0440\u0443\u0437\u043a\u0443 \u0438 \u0440\u0435\u0436\u0438\u043c \u0440\u0430\u0431\u043e\u0442\u044b. \u0414\u043b\u044f \u0437\u0430\u043c\u0435\u043d\u044b \u043f\u0440\u0438\u043b\u043e\u0436\u0438\u0442\u0435 \u0444\u043e\u0442\u043e\u0433\u0440\u0430\u0444\u0438\u0438 \u0438 \u0442\u043e\u0447\u043d\u044b\u0435 \u0440\u0430\u0437\u043c\u0435\u0440\u044b.<\/p>\n<p><a class=\"cr-button\" href=\"mailto:sales@cylinders-rod.top\">\u041d\u0430\u043f\u0438\u0448\u0438\u0442\u0435 \u043d\u0430 sales@cylinders-rod.top<\/a><\/p>\n<\/section>","protected":false},"excerpt":{"rendered":"<p>\u0420\u0430\u0441\u0441\u0447\u0438\u0442\u0430\u0439\u0442\u0435 \u043d\u0430\u0447\u0430\u043b\u044c\u043d\u044b\u0439 \u0434\u0438\u0430\u043c\u0435\u0442\u0440 \u0433\u0438\u0434\u0440\u0430\u0432\u043b\u0438\u0447\u0435\u0441\u043a\u043e\u0433\u043e \u0446\u0438\u043b\u0438\u043d\u0434\u0440\u0430, \u0438\u0441\u0445\u043e\u0434\u044f \u0438\u0437 \u0442\u0440\u0435\u0431\u0443\u0435\u043c\u043e\u0439 \u0441\u0438\u043b\u044b \u0438 \u0438\u043c\u0435\u044e\u0449\u0435\u0433\u043e\u0441\u044f \u0434\u0430\u0432\u043b\u0435\u043d\u0438\u044f, \u0437\u0430\u0442\u0435\u043c \u043f\u0440\u043e\u0432\u0435\u0440\u044c\u0442\u0435 \u0432\u0442\u044f\u0433\u0438\u0432\u0430\u043d\u0438\u0435 \u0438 \u0443\u0441\u0442\u043e\u0439\u0447\u0438\u0432\u043e\u0441\u0442\u044c \u0448\u0442\u043e\u043a\u0430.<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-917","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/cylinders-rod.top\/ru\/wp-json\/wp\/v2\/posts\/917","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cylinders-rod.top\/ru\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cylinders-rod.top\/ru\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cylinders-rod.top\/ru\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/cylinders-rod.top\/ru\/wp-json\/wp\/v2\/comments?post=917"}],"version-history":[{"count":1,"href":"https:\/\/cylinders-rod.top\/ru\/wp-json\/wp\/v2\/posts\/917\/revisions"}],"predecessor-version":[{"id":973,"href":"https:\/\/cylinders-rod.top\/ru\/wp-json\/wp\/v2\/posts\/917\/revisions\/973"}],"wp:attachment":[{"href":"https:\/\/cylinders-rod.top\/ru\/wp-json\/wp\/v2\/media?parent=917"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cylinders-rod.top\/ru\/wp-json\/wp\/v2\/categories?post=917"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cylinders-rod.top\/ru\/wp-json\/wp\/v2\/tags?post=917"}],"curies":[{"name":"WP","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}