{"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\/ar\/how-to-size-hydraulic-cylinder-bore-force-pressure\/","title":{"rendered":"\u0643\u064a\u0641\u064a\u0629 \u062a\u062d\u062f\u064a\u062f \u062d\u062c\u0645 \u062a\u062c\u0648\u064a\u0641 \u0627\u0644\u0623\u0633\u0637\u0648\u0627\u0646\u0629 \u0627\u0644\u0647\u064a\u062f\u0631\u0648\u0644\u064a\u0643\u064a\u0629 \u0645\u0646 \u062e\u0644\u0627\u0644 \u0627\u0644\u0642\u0648\u0629 \u0648\u0627\u0644\u0636\u063a\u0637"},"content":{"rendered":"

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

1. Convert Machine Load to Cylinder Thrust<\/h2>\n

Payload and cylinder force differ when levers and angles are involved. Use the worst geometry and include friction\/acceleration as appropriate.<\/p>\n

2. Choose Working Pressure<\/h2>\n

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

3. Calculate Bore<\/h2>\n

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

4. Check Retraction and Speed<\/h2>\n

Retraction uses annulus area, producing different force and speed. Flow demand rises with effective area for a given velocity.<\/p>\n

5. Screen Rod Buckling<\/h2>\n

Long compression strokes require a column-stability check based on rod stiffness, effective length and mounting.<\/p>\n

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EP-HPU-DC Series Compact DC Hydraulic Power Unit<\/h3>

\u0648\u062d\u062f\u0629 \u0627\u0644\u0637\u0627\u0642\u0629 \u0627\u0644\u0647\u064a\u062f\u0631\u0648\u0644\u064a\u0643\u064a\u0629 \u0627\u0644\u0645\u062f\u0645\u062c\u0629 \u0627\u0644\u0642\u0627\u0628\u0644\u0629 \u0644\u0644\u062a\u0643\u0648\u064a\u0646 EP-HPU-DC \u0644\u062f\u0648\u0627\u0626\u0631 \u0627\u0644\u0623\u0633\u0637\u0648\u0627\u0646\u0627\u062a \u0627\u0644\u062a\u064a \u062a\u0639\u0645\u0644 \u0628\u0627\u0644\u0628\u0637\u0627\u0631\u064a\u0629 \u0623\u0648 \u0627\u0644\u0645\u0631\u0643\u0628\u0627\u062a.<\/p><\/div><\/a><\/article>

\"\"

EP-HPU-AC Series AC Hydraulic Power Unit<\/h3>

\u0648\u062d\u062f\u0629 \u0637\u0627\u0642\u0629 \u0647\u064a\u062f\u0631\u0648\u0644\u064a\u0643\u064a\u0629 \u0642\u0627\u0628\u0644\u0629 \u0644\u0644\u062a\u0643\u0648\u064a\u0646 \u062a\u0639\u0645\u0644 \u0628\u0627\u0644\u062a\u064a\u0627\u0631 \u0627\u0644\u0645\u062a\u0631\u062f\u062f EP-HPU-AC \u0644\u0623\u0646\u0638\u0645\u0629 \u0627\u0644\u0623\u0633\u0637\u0648\u0627\u0646\u0627\u062a \u0627\u0644\u0635\u0646\u0627\u0639\u064a\u0629 \u0627\u0644\u062b\u0627\u0628\u062a\u0629.<\/p><\/div><\/a><\/article>

\"\"

EP-HPU-SYS Series Custom Hydraulic Power Unit & Valve System<\/h3>

\u0648\u062d\u062f\u0629 \u0627\u0644\u0637\u0627\u0642\u0629 \u0627\u0644\u0647\u064a\u062f\u0631\u0648\u0644\u064a\u0643\u064a\u0629 \u0627\u0644\u0645\u062e\u0635\u0635\u0629 EP-HPU-SYS \u0648\u0646\u0638\u0627\u0645 \u0645\u0634\u0639\u0628 \u0627\u0644\u0635\u0645\u0627\u0645\u0627\u062a \u0627\u0644\u0645\u0635\u0645\u0645 \u062d\u0648\u0644 \u062f\u0627\u0626\u0631\u0629 \u0627\u0644\u0623\u0633\u0637\u0648\u0627\u0646\u0629 \u0648\u0627\u0644\u062a\u0634\u063a\u064a\u0644.<\/p><\/div><\/a><\/article>

\"\"

\u0623\u0633\u0637\u0648\u0627\u0646\u0629 \u0647\u064a\u062f\u0631\u0648\u0644\u064a\u0643\u064a\u0629 \u0645\u0644\u062d\u0648\u0645\u0629 \u0645\u0646 \u062e\u0644\u0627\u0644 \u0627\u0644\u0641\u062a\u062d\u0629 \u0645\u0646 \u0633\u0644\u0633\u0644\u0629 EP-WP \u0628\u0642\u0648\u0629 3000 \u0631\u0637\u0644 \u0644\u0643\u0644 \u0628\u0648\u0635\u0629 \u0645\u0631\u0628\u0639\u0629<\/h3>

\u0633\u0644\u0633\u0644\u0629 \u0623\u0633\u0637\u0648\u0627\u0646\u0627\u062a EP-WP \u0627\u0644\u0645\u0644\u062d\u0648\u0645\u0629 \u0630\u0627\u062a \u0627\u0644\u062b\u0642\u0648\u0628 \u0645\u0639 \u0623\u0628\u0639\u0627\u062f \u0627\u0644\u0646\u0645\u0648\u0630\u062c \u0648\u0627\u0644\u0636\u063a\u0637 \u0648\u062d\u0645\u0644 \u0627\u0644\u0639\u0645\u0648\u062f \u0648\u0628\u064a\u0627\u0646\u0627\u062a \u0627\u0644\u0645\u0646\u0641\u0630.<\/p><\/div><\/a><\/article><\/div>\n

Frequently Asked Questions<\/h2>\n
\n
\nWhat number comes first?<\/summary>\n

Required cylinder thrust at worst geometry plus pressure available at the actuator.<\/p>\n<\/details>\n

\nWhy not use relief pressure?<\/summary>\n

It is a protection setting and may not equal normal pressure at the cylinder.<\/p>\n<\/details>\n

\nWhy do extend\/retract differ?<\/summary>\n

The rod removes pressure area on retraction.<\/p>\n<\/details>\n

\nHow does bore affect speed?<\/summary>\n

A larger area needs more flow for the same speed.<\/p>\n<\/details>\n

\nWhen check buckling?<\/summary>\n

For slender rods carrying compression over long effective length.<\/p>\n<\/details>\n<\/div>\n

\n

\u0646\u0627\u0642\u0634 \u0645\u062a\u0637\u0644\u0628\u0627\u062a\u0643 \u0627\u0644\u0647\u064a\u062f\u0631\u0648\u0644\u064a\u0643\u064a\u0629<\/h2>\n

\u0623\u0631\u0633\u0644 \u062a\u0641\u0627\u0635\u064a\u0644 \u0627\u0644\u0642\u0637\u0631 \u0627\u0644\u062f\u0627\u062e\u0644\u064a\u060c \u0648\u0627\u0644\u0634\u0648\u0637\u060c \u0648\u0637\u0631\u064a\u0642\u0629 \u0627\u0644\u062a\u0631\u0643\u064a\u0628\u060c \u0648\u0627\u0644\u0636\u063a\u0637\u060c \u0648\u0627\u0644\u0645\u0646\u0627\u0641\u0630\u060c \u0648\u0627\u0644\u062d\u0645\u0644\u060c \u0648\u0627\u0644\u062a\u0634\u063a\u064a\u0644. \u0628\u0627\u0644\u0646\u0633\u0628\u0629 \u0644\u0644\u0642\u0637\u0639 \u0627\u0644\u0628\u062f\u064a\u0644\u0629\u060c \u0623\u0631\u0641\u0642 \u0635\u0648\u0631\u064b\u0627 \u0648\u0642\u064a\u0627\u0633\u0627\u062a \u062f\u0642\u064a\u0642\u0629.<\/p>\n

\u0627\u0644\u0628\u0631\u064a\u062f \u0627\u0644\u0625\u0644\u0643\u062a\u0631\u0648\u0646\u064a: sales@cylinders-rod.top<\/a><\/p>\n<\/section>","protected":false},"excerpt":{"rendered":"

\u0627\u062d\u0633\u0628 \u0642\u0637\u0631 \u062a\u062c\u0648\u064a\u0641 \u0627\u0644\u0623\u0633\u0637\u0648\u0627\u0646\u0629 \u0627\u0644\u0647\u064a\u062f\u0631\u0648\u0644\u064a\u0643\u064a\u0629 \u0627\u0644\u0627\u0628\u062a\u062f\u0627\u0626\u064a\u0629 \u0645\u0646 \u0627\u0644\u0642\u0648\u0629 \u0627\u0644\u0645\u0637\u0644\u0648\u0628\u0629 \u0648\u0627\u0644\u0636\u063a\u0637 \u0627\u0644\u0645\u062a\u0627\u062d\u060c \u062b\u0645 \u062a\u062d\u0642\u0642 \u0645\u0646 \u0627\u0644\u062a\u0631\u0627\u062c\u0639 \u0648\u0627\u0633\u062a\u0642\u0631\u0627\u0631 \u0627\u0644\u0642\u0636\u064a\u0628.<\/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\/ar\/wp-json\/wp\/v2\/posts\/917","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cylinders-rod.top\/ar\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cylinders-rod.top\/ar\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cylinders-rod.top\/ar\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/cylinders-rod.top\/ar\/wp-json\/wp\/v2\/comments?post=917"}],"version-history":[{"count":1,"href":"https:\/\/cylinders-rod.top\/ar\/wp-json\/wp\/v2\/posts\/917\/revisions"}],"predecessor-version":[{"id":973,"href":"https:\/\/cylinders-rod.top\/ar\/wp-json\/wp\/v2\/posts\/917\/revisions\/973"}],"wp:attachment":[{"href":"https:\/\/cylinders-rod.top\/ar\/wp-json\/wp\/v2\/media?parent=917"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cylinders-rod.top\/ar\/wp-json\/wp\/v2\/categories?post=917"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cylinders-rod.top\/ar\/wp-json\/wp\/v2\/tags?post=917"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}