{"id":3108,"date":"2026-07-06T03:00:04","date_gmt":"2026-07-06T03:00:04","guid":{"rendered":"https:\/\/hydrauliccylindersprice.com\/product\/truck-crane-luffing-cylinder-ep-hcyy11112016-model\/"},"modified":"2026-07-06T03:00:19","modified_gmt":"2026-07-06T03:00:19","slug":"truck-crane-luffing-cylinder-ep-hcyy11112016-model","status":"publish","type":"product","link":"https:\/\/hydrauliccylindersprice.com\/sr\/%d0%bf%d1%80%d0%be%d0%b8%d0%b7%d0%b2%d0%be%d0%b4\/truck-crane-luffing-cylinder-ep-hcyy11112016-model\/","title":{"rendered":"Truck Crane Luffing Cylinder | EP-HCYY11112016 Model"},"content":{"rendered":"

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

Truck Crane Luffing Cylinder
EP-HCYY11112016 \u00b7 \u03a6320mm \u00b7 Stroke 4,000mm \u00b7 25 MPa \u00b7 3,500 kg<\/span><\/h2>\n

The largest and heaviest cylinder in the entire product range \u2014 and the single most critical actuator on a truck crane. The luffing cylinder raises and lowers the main boom through its full angular range, supporting the combined weight of the boom, the extension sections, the hook block, the wire rope, and the suspended load. At 3,500 kg, \u03a6320 bore, and 4,000 mm stroke, this is heavy-duty hydraulic engineering at its most demanding.<\/p>\n

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\u03a6320<\/span>Bore<\/span><\/div>\n
4,000mm<\/span>Stroke<\/span><\/div>\n
25 MPa<\/span>Working Pressure<\/span><\/div>\n
37.5 MPa<\/span>Max Pressure<\/span><\/div>\n
3,500 kg<\/span>Weight<\/span><\/div>\n<\/div>\n<\/section>\n
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Technical Specifications<\/h2>\n
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\"Truck\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>\nTruck Crane Luffing Cylinder<\/td>\n<\/tr>\n
Cylinder Model<\/td>\nEP-HCYY11112016<\/td>\n<\/tr>\n
Bore Diameter (D)<\/td>\n\u03a6320 mm<\/td>\n<\/tr>\n
Rod Diameter (d)<\/td>\n\u03a6280 mm<\/td>\n<\/tr>\n
Stroke (S)<\/td>\n4,000 mm<\/td>\n<\/tr>\n
Installation Distance (L)<\/td>\n4,750 mm<\/td>\n<\/tr>\n
Working Pressure<\/td>\n25 MPa<\/td>\n<\/tr>\n
Maximum Withstand Pressure<\/td>\n37.5 MPa<\/td>\n<\/tr>\n
Weight<\/td>\n3,500 kg<\/td>\n<\/tr>\n
Application<\/td>\nTruck-Mounted Crane<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/section>\n
\"Truck\u25b2 Truck Crane Luffing Cylinder | EP-HCYY11112016 Model<\/span><\/section>\n
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How the Luffing Cylinder Controls the Main Boom<\/h2>\n
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\"Truck<\/p>\n

The luffing cylinder connects the crane superstructure to the boom base, converting hydraulic pressure into the angular force needed to raise (luff up) or lower (luff down) the main boom. As the boom angle increases from horizontal toward vertical, the geometric advantage changes \u2014 requiring different forces at different angles.<\/p>\n

At \u03a6320 bore and 25 MPa, the cylinder produces approximately 2,011 kN (205 tonnes) of push force \u2014 enough to raise a fully extended boom with its maximum rated load from horizontal to near-vertical. The 87.5% rod ratio (\u03a6280\/\u03a6320) means the rod is almost as thick as the bore \u2014 providing the column strength needed to push the 4,000 mm stroke under the massive bending moments generated by the boom’s cantilever weight.<\/p>\n

The 37.5 MPa maximum withstand pressure (1.5\u00d7 working) accounts for dynamic overloads: sudden load release when the hook snags and releases, wind gusts on the extended boom, and emergency stops during luffing. The cylinder must survive these transients without seal failure or structural damage. Browse the full mobile machinery hydraulic cylinder<\/a> range.<\/p>\n<\/section>\n

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Luffing Cylinder: The Biggest Numbers in the Catalogue<\/h2>\n
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3,500 kg \u2014 Crane Within a Crane<\/strong><\/p>\n

Installing or replacing this cylinder requires a separate mobile crane. The cylinder itself is a structural steel assembly \u2014 the wall thickness at \u03a6320 bore and 25 MPa is substantial. Handling, shipping, and installation all require heavy-lift planning.<\/p>\n<\/div>\n

4,000 mm Stroke \u2014 Full Boom Arc<\/strong><\/p>\n

The stroke covers the boom’s entire angular range from near-horizontal to near-vertical. The rod extends over 4 metres \u2014 requiring exceptional chrome quality and straightness across the full length to maintain seal integrity.<\/p>\n<\/div>\n

2,011 kN Push Force<\/strong><\/p>\n

At 25 MPa, the \u03a6320 bore area produces over 200 tonnes of force. This is the force needed to raise a fully loaded boom \u2014 including the boom self-weight, extension sections, wire ropes, hook block, and the rated load \u2014 against gravity.<\/p>\n<\/div>\n<\/div>\n<\/section>\n

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Key Advantages<\/h2>\n
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