{"id":2553,"date":"2026-07-01T06:03:16","date_gmt":"2026-07-01T06:03:16","guid":{"rendered":"https:\/\/hydrauliccylindersprice.com\/product\/large-excavator-stick-cylinder-arm-cylinder\/"},"modified":"2026-07-01T06:03:22","modified_gmt":"2026-07-01T06:03:22","slug":"large-excavator-stick-cylinder-arm-cylinder","status":"publish","type":"product","link":"https:\/\/hydrauliccylindersprice.com\/fr\/produit\/large-excavator-stick-cylinder-arm-cylinder\/","title":{"rendered":"Large Excavator Stick Cylinder (Arm Cylinder)"},"content":{"rendered":"

<\/p>\n
\n \"Large<\/p>\n
\n Large Excavator \u00b7 3rd of 4<\/span><\/p>\n

Large Excavator Stick Cylinder
(Arm Cylinder)<\/span><\/h2>\n

The specification buyers check first. “Arm breakout force” \u2014 the retraction power that drags the bucket through rock \u2014 is the most-referenced performance metric in mining excavator comparisons. This cylinder produces it: 3,561 KN of pull-back force through hard ground, 2,600 mm of reach into deep faces.<\/p>\n

\n
210\u2013360mm<\/span>Bore<\/span><\/div>\n
3,561 KN<\/span>Max Thrust<\/span><\/div>\n
\u22642,600mm<\/span>Stroke<\/span><\/div>\n
35 MPa<\/span>Pressure<\/span><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/section>\n
\n

Arm Breakout Force \u2014 The Metric Mining Companies Buy Excavators By<\/span><\/h2>\n
\n \"Large<\/p>\n

When a mining company selects a 100-tonne excavator, the first specification they compare is “arm breakout force” \u2014 the maximum digging force the stick cylinder produces during retraction (pulling the bucket toward the machine through the material). This force determines how hard the excavator can dig: harder material requires more breakout force. An excavator with insufficient arm breakout stalls in the digging face, loses productivity, and extends the loading cycle time.<\/p>\n<\/div>\n

The arm breakout force is produced by the stick cylinder’s annular piston area (bore\u00b2 \u2212 rod\u00b2) \u00d7 system pressure. With a 360 mm bore and 260 mm rod, the annular area is approximately 48,380 mm\u00b2 \u2014 producing about 1,693 KN of retraction force at 35 MPa. The linkage geometry multiplies this into a bucket-tip force that appears as “arm breakout force” in the excavator’s specification sheet.<\/p>\n

Korea Ever-Power optimises the rod-to-bore ratio for each excavator model to maximise arm breakout force while maintaining adequate crowd force (extension) and retraction speed. Browse the large excavator hydraulic cylinder<\/a> range.<\/p>\n<\/section>\n

\n

Technical Specifications<\/span><\/h2>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n
Parameter<\/th>\nSpecification<\/th>\n<\/tr>\n<\/thead>\n
Product<\/td>\nLarge Excavator Stick Cylinder (Arm Cylinder)<\/td>\n<\/tr>\n
Function<\/td>\nControl the movement of the forearm (reach \/ retract \/ dig)<\/td>\n<\/tr>\n
Bore Diameter<\/td>\n210 mm \u2013 360 mm<\/td>\n<\/tr>\n
Rod Diameter<\/td>\n145 mm \u2013 260 mm<\/td>\n<\/tr>\n
Stroke<\/td>\n\u2264 2,600 mm<\/td>\n<\/tr>\n
Max Thrust<\/td>\n3,560.8 KN (bore 360 mm \/ 35 MPa)<\/td>\n<\/tr>\n
Application<\/td>\nLarge Excavator (20\u2013100+ tonne class)<\/td>\n<\/tr>\n
Certification<\/td>\nISO 9001 \u00b7 100% hydrostatic tested<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<\/section>\n
\n
\n

Cycle Time and Productivity \u2014 Where Seconds Equal Tonnes per Hour<\/h2>\n

On a mining excavator loading 200-tonne haul trucks, each digging cycle takes 15\u201325 seconds. A 1-second improvement in cycle time (achieved through faster stick retraction) adds 3\u20135 extra cycles per hour \u2014 an additional 15\u201335 tonnes of production per hour. Over a 6,000-hour annual operation, that is 90,000\u2013210,000 additional tonnes moved per year. The stick cylinder’s retraction speed \u2014 a function of flow rate, annular area, and seal friction \u2014 is a direct productivity lever.<\/p>\n

\n
\n Rod ratio optimisation \u2014 force vs speed trade-off<\/strong><\/p>\n

A thicker rod increases extension force but decreases retraction speed (larger rod = smaller annular area = less flow per mm of retraction = slower retract). A thinner rod increases retraction speed but reduces extension force. Korea Ever-Power calculates the optimal rod diameter for each excavator model’s specific digging profile \u2014 balancing arm breakout force against cycle time.<\/p>\n<\/p><\/div>\n

\n Low-friction seals \u2014 minimising parasitic drag<\/strong><\/p>\n

At 35 MPa and 360 mm bore, the seal friction force is significant \u2014 high-friction seals slow the retraction speed and waste hydraulic energy as heat. Korea Ever-Power specifies PTFE-bronze guide rings and low-friction polyurethane seals to minimise the parasitic drag. Contact Korea Ever-Power engineering<\/a> for large excavator stick cylinder specifications.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/section>\n

\n \"Large
\n<\/section>\n
\n

Manufacturing Process<\/span><\/h2>\n
\n \"Korea<\/p>\n

Bore (210\u2013360 mm) deep-hole bored and honed to Ra 0.2\u20130.4 \u00b5m. Chrome 80 \u00b5m. Rod straightness \u22640.1 mm\/metre over 2,600 mm. Forged rod eyes. The stick cylinder mounts at mid-height on the arm \u2014 partially protected from ground debris but exposed to rock fragments thrown by the bucket during digging. Barrel and rod surfaces are inspected for impact dents before assembly.<\/p>\n<\/div>\n

Seals are polyurethane + PTFE-bronze guides + quad-lip wipers, rated -40 \u00b0C to +100 \u00b0C for mining service. Every stick cylinder is hydrostatic tested at 52.5 MPa and full-stroke tested for smooth, low-friction retraction \u2014 verifying that breakaway friction is below the specified limit for the excavator OEM’s cycle-time target.<\/p>\n<\/section>\n

\n

OEM & ODM<\/span><\/h2>\n
\n
\n
What You Provide<\/strong><\/div>\n
\n

Excavator model, required arm breakout force, required arm crowd force, target cycle time, bore\/rod\/stroke, system pressure, temperature range, pin diameters, and the stick linkage assembly drawing.<\/p>\n<\/div>\n<\/div>\n

\n
What the Factory Delivers<\/strong><\/div>\n
\n

Engineering drawing with bore, rod (optimised ratio, forged eye), stroke, PTFE-bronze guides, 80 \u00b5m chrome, quad-lip wiper, and mounting dimensions. Hydrostatic + breakaway-friction test. Seal kits. Browse the mobile machinery cylinder family<\/a> and the Korea Ever-Power catalogue<\/a>.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

\"Workshop\"<\/section>\n

\n

FAQ<\/span><\/h2>\n
\n
\n

Why is arm breakout force the most-referenced specification?<\/h3>\n

Because it directly predicts digging productivity. An excavator with higher arm breakout force fills the bucket faster in hard material \u2014 reducing the loading cycle time and increasing tonnes per hour. Mining operations calculate the payback period of an excavator purchase based on arm breakout force and resulting production rate. The stick cylinder is the component that produces this metric.<\/p>\n<\/div>\n

\n

Does the large stick cylinder use the same rod ratio as the small?<\/h3>\n

Not necessarily. The optimal rod-to-bore ratio depends on the specific digging application \u2014 hard rock mining typically favours a thinner rod (maximising retraction force and speed at the cost of extension force), while general construction favours a thicker rod (balanced extension and retraction). Korea Ever-Power calculates the optimal ratio for each OEM’s application profile.<\/p>\n<\/div>\n

\n

How does 1 second of cycle improvement translate to production?<\/h3>\n

At 20-second cycles, an excavator completes 180 cycles per hour. A 1-second improvement (to 19 seconds) adds approximately 9 cycles per hour \u2014 roughly 45\u201365 additional tonnes per hour for a 100-tonne excavator with a 5\u20137 m\u00b3 bucket. Over 6,000 operating hours per year, this equals 270,000\u2013390,000 additional tonnes. Browse telescopic cylinders<\/a> and forklift cylinders<\/a>.<\/p>\n<\/div>\n<\/div>\n<\/section>\n

\n

Related Categories<\/span><\/h2>\n
<\/p>\n
\n
\"Telescopic\"<\/div>\n
\n
Telescopic Hydraulic Cylinders \u2192<\/div>\n
Dump truck, trailer, hoist.<\/div>\n<\/div>\n<\/div>\n

<\/a><\/p>\n

\n
\"Forklift\"<\/div>\n
\n
Forklift Hydraulic Cylinders \u2192<\/div>\n
Lift, tilt, steer \u2014 OEM.<\/div>\n<\/div>\n<\/div>\n

<\/a><\/p>\n

\n
\"AWV\"<\/div>\n
\n
Aerial Work Vehicle Cylinders \u2192<\/div>\n
Scissor, boom, platforms.<\/div>\n<\/div>\n<\/div>\n

<\/a><\/div>\n<\/section>\n

<\/main><\/p>","protected":false},"excerpt":{"rendered":"

Large excavator stick cylinder (arm cylinder) \u2014 the hydraulic actuator that controls the forearm (stick) reach and retraction on 20\u2013100+ tonne mining and construction excavators. Bore 210\u2013360 mm, stroke \u22642,600 mm, thrust 3,560.8 KN at 35 MPa. The retraction stroke produces the “arm breakout force” that determines how productively the excavator digs through hard rock, frozen ground, and compacted material \u2014 the single most-referenced cylinder performance metric in large excavator specifications. Korea Ever-Power. ISO 9001. OEM & ODM.<\/div>","protected":false},"featured_media":2554,"comment_status":"closed","ping_status":"open","template":"","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":""},"product_brand":[],"product_cat":[854],"product_tag":[],"class_list":["post-2553","product","type-product","status-publish","has-post-thumbnail","product_cat-mobile-machinery-hydraulic-cylinders","pa_editor-cxm","first","instock","product-type-simple"],"_links":{"self":[{"href":"https:\/\/hydrauliccylindersprice.com\/fr\/wp-json\/wp\/v2\/product\/2553","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hydrauliccylindersprice.com\/fr\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/hydrauliccylindersprice.com\/fr\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/hydrauliccylindersprice.com\/fr\/wp-json\/wp\/v2\/comments?post=2553"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/hydrauliccylindersprice.com\/fr\/wp-json\/wp\/v2\/media\/2554"}],"wp:attachment":[{"href":"https:\/\/hydrauliccylindersprice.com\/fr\/wp-json\/wp\/v2\/media?parent=2553"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/hydrauliccylindersprice.com\/fr\/wp-json\/wp\/v2\/product_brand?post=2553"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/hydrauliccylindersprice.com\/fr\/wp-json\/wp\/v2\/product_cat?post=2553"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/hydrauliccylindersprice.com\/fr\/wp-json\/wp\/v2\/product_tag?post=2553"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}