{"id":3112,"date":"2026-07-06T03:00:04","date_gmt":"2026-07-06T03:00:04","guid":{"rendered":"https:\/\/hydrauliccylindersprice.com\/product\/crawler-crane-luffing-cylinder-ep-hcyy11112018-model\/"},"modified":"2026-07-06T03:00:26","modified_gmt":"2026-07-06T03:00:26","slug":"crawler-crane-luffing-cylinder-ep-hcyy11112018-model","status":"publish","type":"product","link":"https:\/\/hydrauliccylindersprice.com\/it\/prodotto\/crawler-crane-luffing-cylinder-ep-hcyy11112018-model\/","title":{"rendered":"Crawler Crane Luffing Cylinder | EP-HCYY11112018 Model"},"content":{"rendered":"

<\/p>\n
Mobile Machinery Hydraulic Cylinder<\/span><\/p>\n

Crawler Crane Luffing Cylinder
EP-HCYY11112018 \u00b7 \u03a6280mm \u00b7 Stroke 3,507mm \u00b7 31.5 MPa \u00b7 1,155 kg<\/span><\/h2>\n

The main boom luffing actuator for lattice boom crawler cranes \u2014 one of the heaviest and highest-pressure cylinders in the mobile crane industry. At 1,155 kg with a \u03a6280 bore operating at 31.5 MPa, this cylinder raises and lowers the lattice boom through its full angular range, supporting the combined weight of the boom sections, pendant ropes, hook block, and suspended load on cranes rated at 100+ tonnes lifting capacity.<\/p>\n

\n
\u03a6280<\/span>Bore<\/span><\/div>\n
3,507mm<\/span>Stroke<\/span><\/div>\n
31.5 MPa<\/span>Working Pressure<\/span><\/div>\n
39 MPa<\/span>Max Pressure<\/span><\/div>\n
1,155 kg<\/span>Weight<\/span><\/div>\n<\/div>\n<\/section>\n
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Technical Specifications<\/h2>\n
<\/div>\n

\"Crawler\u25b2 Dimension Drawing<\/span><\/p>\n

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Parameter<\/th>\nSpecification<\/th>\n<\/tr>\n<\/thead>\n
Product Name<\/td>\nCrawler Crane Luffing Cylinder<\/td>\n<\/tr>\n
Cylinder Model<\/td>\nEP-HCYY11112018<\/td>\n<\/tr>\n
Bore (D)<\/td>\n\u03a6280 mm<\/td>\n<\/tr>\n
Rod (d)<\/td>\n\u03a6250 mm<\/td>\n<\/tr>\n
Stroke (S)<\/td>\n3,507 mm<\/td>\n<\/tr>\n
Installation Distance (L)<\/td>\n4,218 mm<\/td>\n<\/tr>\n
Working Pressure<\/td>\n31.5 MPa<\/td>\n<\/tr>\n
Maximum Withstand Pressure<\/td>\n39 MPa<\/td>\n<\/tr>\n
Weight<\/td>\n1,155 kg<\/td>\n<\/tr>\n
Application<\/td>\nLattice Boom Crawler Crane<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/section>\n
\"Crawler\u25b2 Crawler Crane Luffing Cylinder | EP-HCYY11112018 Model<\/span><\/section>\n
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How the Luffing Cylinder Controls a Lattice Boom<\/h2>\n
<\/div>\n

\"Crawler<\/p>\n

A crawler crane’s lattice boom can extend 50\u2013100+ metres in length, constructed from interlocking steel lattice sections. The luffing cylinder connects the crane’s revolving superstructure to the boom foot, converting hydraulic pressure into the angular force needed to raise the boom from near-horizontal (maximum radius, minimum height) to near-vertical (minimum radius, maximum height).<\/p>\n

The 89.3% rod-to-bore ratio (\u03a6250\/\u03a6280) reveals this cylinder’s primary function: it works predominantly in tension \u2014 pulling the boom upward against gravity. The thick \u03a6250 rod provides the tensile cross-section needed to suspend a lattice boom assembly that can weigh 50+ tonnes. The 3,507 mm stroke spans the boom’s full angular range from approximately 30\u00b0 to 85\u00b0 from horizontal.<\/p>\n

At 31.5 MPa working pressure \u2014 significantly higher than the truck crane luffing cylinder (25 MPa) \u2014 this cylinder produces approximately 1,943 kN of force. The 39 MPa burst rating (1.24\u00d7 safety factor) reflects the crawler crane industry’s tighter pressure margins, where every kilogram of cylinder weight affects the crane’s lifting capacity at the boom tip. Browse the full mobile machinery hydraulic cylinder<\/a> range.<\/p>\n<\/section>\n

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Crawler Crane vs Truck Crane Luffing Cylinder<\/h2>\n
<\/div>\n
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Higher Pressure, Lighter Weight<\/strong><\/p>\n

The crawler crane luffing cylinder operates at 31.5 MPa vs 25 MPa for the truck crane version. Higher pressure produces equivalent force from a smaller bore \u2014 the \u03a6280 bore is smaller than the truck crane’s \u03a6320, saving weight that directly translates to additional lifting capacity.<\/p>\n<\/div>\n

89.3% Rod Ratio \u2014 Tension-Optimised<\/strong><\/p>\n

The \u03a6250 rod inside the \u03a6280 bore is almost entirely rod \u2014 designed for tensile loading as the cylinder pulls the boom upward. The small annular area limits oil flow for precise, controlled boom movement at altitude.<\/p>\n<\/div>\n

1,155 kg vs 3,500 kg<\/strong><\/p>\n

Despite operating at higher pressure, the crawler crane luffing cylinder is one-third the weight of the truck crane version \u2014 because every kilogram on the superstructure reduces the net lifting capacity at the boom tip. Weight optimisation is critical in crawler crane design.<\/p>\n<\/div>\n<\/div>\n<\/section>\n

\"Crawler<\/section>\n
\n

Crawler Crane Cylinder Family<\/h2>\n
<\/div>\n

Korea Ever-Power manufactures 8+ cylinder models for lattice boom crawler cranes \u2014 luffing, rack support, frame support, boom angle, and supplementary bracing cylinders:<\/p>\n

\n
EP-HCYY11112018 \u2190 this product<\/strong><\/a><\/p>\n

Luffing Cyl. \u03a6280, 1155kg<\/p>\n<\/div>\n

EP-HCYY11112022<\/strong><\/a><\/p>\n

Rack Support Cyl. \u03a670, 48kg<\/p>\n<\/div>\n

EP-HCYY11112023<\/strong><\/a><\/p>\n

Frame Support Cyl. \u03a6140, 123kg<\/p>\n<\/div>\n

EP-HCYY11112021\/24\/25\/26\/27<\/strong><\/a><\/p>\n

Boom Angle + Additional Support (5 models)<\/p>\n<\/div>\n<\/div>\n<\/section>\n

\n

Why Choose Korea Ever-Power<\/h2>\n
<\/div>\n

Korea Ever-Power is a professional hydraulic cylinder manufacturer and supplier, specialising in forklift hydraulic cylinders, aerial work vehicle cylinders, mobile machinery cylinders, offshore cylinders, and industrial engineering cylinders. Our production facilities are equipped with composite machining centres, multi-station welding robots, automated assembly lines, specialised cylinder testing machines, and a dedicated quality inspection area \u2014 ensuring every cylinder meets OEM-grade performance standards.<\/p>\n

\"Korea<\/p>\n

Korea Ever-Power forklift tilt cylinders are manufactured to the same specifications and quality standards as original equipment cylinders fitted to major forklift brands worldwide. Every cylinder is 100% hydrostatic pressure tested, dimensionally inspected, and shipped with a test certificate and seal kit. Contact the Korea Ever-Power<\/a> team for pricing and lead time.<\/p>\n<\/section>\n

\"Hydraulic<\/section>\n
\n

Frequently Asked Questions<\/h2>\n
<\/div>\n
\n
\n

Why does this cylinder operate at 31.5 MPa \u2014 higher than most other crane cylinders?<\/h3>\n

Crawler crane cylinders are weight-optimised. Higher pressure produces the required force from a smaller, lighter cylinder \u2014 and every kilogram saved on the superstructure directly increases the crane’s net lifting capacity at the boom tip.<\/p>\n<\/div>\n

\n

What crane tonnage uses this specification?<\/h3>\n

The EP-HCYY11112018 with \u03a6280 bore is designed for large lattice boom crawler cranes in the 100\u2013300+ tonne lifting capacity class. Confirm bore, stroke, and mounting dimensions with Korea Ever-Power for your specific crane model.<\/p>\n<\/div>\n

\n

How is this 1,155 kg cylinder installed?<\/h3>\n

A separate assist crane is required \u2014 typically 25+ tonne capacity. The cylinder is positioned between the superstructure and boom foot using rigging slings. Installation typically takes half a day with a 3-person crew plus crane operator.<\/p>\n<\/div>\n

\n

Does Korea Ever-Power supply the complete crawler crane cylinder set?<\/h3>\n

Yes \u2014 luffing, rack support, frame support, boom angle, and additional bracing cylinders are all available. Also available: truck crane cylinders (EP-HCYY11112013\u201317). Browse the mobile machinery hydraulic cylinder<\/a> range.<\/p>\n<\/div>\n<\/div>\n<\/section>\n

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What Our Customers Say<\/h2>\n
<\/div>\n
\n
\n
\u2605\u2605\u2605\u2605\u2605<\/span>Apr 2026<\/span><\/div>\n

“Replaced the luffing cylinder on our 150-tonne crawler crane. Korea Ever-Power delivered the EP-HCYY11112018 with full 39 MPa pressure test certification. After 10 months of heavy lattice boom work, zero drift and zero leakage.”<\/p>\n

A. Volkov<\/strong> \u2014 Heavy Crane Director, Russia<\/p>\n<\/div>\n

\n
\u2605\u2605\u2605\u2605\u2606<\/span>Nov 2025<\/span><\/div>\n

“The 31.5 MPa operating pressure matches our crane’s original specification exactly. At 1,155 kg, handling required our 30-tonne assist crane. Chrome quality across the 3.5-metre rod is excellent \u2014 uniform finish, no defects.”<\/p>\n

L. Berger<\/strong> \u2014 Crane Service Engineer, Germany<\/p>\n<\/div>\n<\/div>\n<\/section>\n

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Related Hydraulic Cylinder Categories<\/h2>\n
<\/div>\n
\n
\"ForkliftForklift Hydraulic Cylinders \u2192<\/span><\/a><\/div>\n
\"ScissorAerial Work Vehicle Cylinders \u2192<\/span><\/a><\/div>\n
\"BoomOffshore Hydraulic Cylinders \u2192<\/span><\/a><\/div>\n
\"ForkliftIndustrial Engineering Cylinders \u2192<\/span><\/a><\/div>\n<\/div>\n<\/section>\n

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

Crawler crane luffing cylinder EP-HCYY11112018 is the main boom luffing actuator for lattice boom crawler cranes rated at 100\u2013300+ tonnes. Operating at 31.5 MPa \u2014 significantly higher than truck crane luffing cylinders \u2014 this cylinder produces 1,943 kN of force from the smaller \u03a6280 bore. Higher pressure saves weight: at 1,155 kg, it is one-third the weight of the equivalent truck crane cylinder. The 89.3% rod ratio (\u03a6250\/\u03a6280) optimises for tensile loading. Stroke 3,507 mm, installation distance 4,218 mm. Maximum withstand pressure 39 MPa. Korea Ever-Power. ISO 9001.<\/div>","protected":false},"featured_media":3113,"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-3112","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\/it\/wp-json\/wp\/v2\/product\/3112","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hydrauliccylindersprice.com\/it\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/hydrauliccylindersprice.com\/it\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/hydrauliccylindersprice.com\/it\/wp-json\/wp\/v2\/comments?post=3112"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/hydrauliccylindersprice.com\/it\/wp-json\/wp\/v2\/media\/3113"}],"wp:attachment":[{"href":"https:\/\/hydrauliccylindersprice.com\/it\/wp-json\/wp\/v2\/media?parent=3112"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/hydrauliccylindersprice.com\/it\/wp-json\/wp\/v2\/product_brand?post=3112"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/hydrauliccylindersprice.com\/it\/wp-json\/wp\/v2\/product_cat?post=3112"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/hydrauliccylindersprice.com\/it\/wp-json\/wp\/v2\/product_tag?post=3112"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}