{"id":1789,"date":"2026-09-09T06:00:23","date_gmt":"2026-09-09T06:00:23","guid":{"rendered":"https:\/\/ever-powers.com\/?post_type=product&p=1789"},"modified":"2026-09-09T06:10:54","modified_gmt":"2026-09-09T06:10:54","slug":"crawler-crane-boom-lifting-hydraulic-cylinder-hcyy11112018","status":"publish","type":"product","link":"https:\/\/ever-powers.com\/ja\/product\/crawler-crane-boom-lifting-hydraulic-cylinder-hcyy11112018\/","title":{"rendered":"Crawler Crane Boom Lifting Hydraulic Cylinder \u2014 HCYY11112018"},"content":{"rendered":"
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SEO Keyword Research \u2014 HCYY11112018<\/h2>\n

Primary Keyword:<\/strong> crawler crane boom lifting hydraulic cylinder<\/p>\n

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Long-tail Keywords:<\/strong> OEM replacement crawler crane boom lifting cylinder, crawler crane hydraulic cylinder manufacturer, buy crawler crane luffing cylinder 280mm bore, custom hydraulic cylinder for lattice boom crane, heavy duty crawler crane cylinder supplier<\/p>\n<\/div>\n

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HCYY11112018 \u2014 Crawler Crane Boom Lifting Hydraulic Cylinder<\/h2>\n

\u306e crawler crane boom lifting hydraulic cylinder<\/strong> HCYY11112018 is a large-bore, high-pressure luffing actuator designed to raise and lower the main boom of heavy crawler cranes. With a bore diameter of \u03a6280 mm, a stroke of 2,200 mm, and a working pressure of 31.5 MPa, this cylinder produces an extension force of 1,943 kN \u2014 the highest output in the double-acting-cylinders.com crane series. It is used wherever precise boom angle control and sustained heavy lifting capacity are required.<\/p>\n

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crawler crane boom lifting hydraulic cylinder installation diagram<\/p><\/div>\n<\/div>\n

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Product Overview<\/h2>\n

On a crawler crane, the main boom is the primary structural arm through which all lifting loads are transmitted. The boom lifting \u2014 or luffing \u2014 cylinder is pinned between the crane’s rotating upper structure and a pivot point on the boom chord or gantry, and it is responsible for changing the boom’s working angle from near-horizontal to near-vertical. As the cylinder extends, the boom rises; as it retracts, the boom lowers. Because the entire suspended load acts through the boom pivot, the luffing cylinder must develop very large hydraulic forces and maintain them steadily for extended periods. Any loss of pressure control translates directly into uncontrolled boom movement and a potential loss-of-load event.<\/p>\n

HCYY11112018 uses a \u03a6280 mm bore diameter to generate its rated 1,943 kN extension force at 31.5 MPa working pressure. The 160 mm rod diameter provides the compressive resistance needed to carry the boom’s weight through the full 2,200 mm stroke without buckling risk. Both ends of the cylinder incorporate adjustable hydraulic cushioning, which absorbs kinetic energy as the boom approaches its upper and lower travel limits and prevents shock loading on the crane structure and hydraulic circuit. The 3,000 mm installation distance from pin centre to pin centre is the critical dimension for fitment compatibility when replacing worn cylinders on existing crane frames.<\/p>\n

The cylinder barrel and rod assembly total 1,003 kg. This mass reflects the heavy wall sections required for 31.5 MPa service and the 42CrMo4 alloy steel used for the piston rod \u2014 a medium-carbon chromium-molybdenum grade selected for its combination of high tensile strength, toughness, and deep hardenability. The rod surface is hard-chrome plated and precision-ground, giving a finish that extends seal life and resists corrosion in outdoor crane environments. Dual guide rings in the rod-end gland distribute radial loads across a wider bearing area, reducing gland wear when boom side forces create off-axis loading on the rod.<\/p>\n

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Technical Specifications<\/h2>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Specification<\/th>\nValue<\/th>\n<\/tr>\n<\/thead>\n
Cylinder Model<\/strong><\/td>\nHCYY11112018<\/td>\n<\/tr>\n
Specification<\/strong><\/td>\n\u03a6280\u00d7\u03a6160\u00d72200 mm (Bore \u00d7 Rod \u00d7 Stroke)<\/td>\n<\/tr>\n
Bore Diameter<\/strong><\/td>\n280 mm<\/td>\n<\/tr>\n
Rod Diameter<\/strong><\/td>\n160 mm<\/td>\n<\/tr>\n
Stroke<\/strong><\/td>\n2,200 mm<\/td>\n<\/tr>\n
Working Pressure<\/strong><\/td>\n31.5 MPa<\/td>\n<\/tr>\n
Maximum Withstand Pressure<\/strong><\/td>\n40 MPa<\/td>\n<\/tr>\n
Installation Distance (Pin\u2013Pin)<\/strong><\/td>\n3,000 mm<\/td>\n<\/tr>\n
Weight<\/strong><\/td>\n1,003 kg<\/td>\n<\/tr>\n
Extension Force (at 31.5 MPa)<\/strong><\/td>\n1,943 kN<\/td>\n<\/tr>\n
Rod Material<\/strong><\/td>\n42CrMo4 alloy steel<\/td>\n<\/tr>\n
End Cushioning<\/strong><\/td>\nAdjustable, both ends<\/td>\n<\/tr>\n
Compliance<\/strong><\/td>\nEN 13135 \/ FEM 1.001<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

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Engineering Features<\/h2>\n

Bore Diameter \u2014 Hydraulic Force Output<\/h3>\n

The 280 mm bore produces a piston area of approximately 615 cm\u00b2. At 31.5 MPa working pressure, the resulting extension force is 1,943 kN. This force output directly governs the maximum boom load the crane can lift at a given radius. A larger bore diameter increases force capacity without requiring higher system pressure, which is important for the hydraulic pump and valve sizing of large crawler cranes.<\/p>\n

Rod Diameter \u2014 Buckling Resistance Under Long Stroke<\/h3>\n

At 2,200 mm stroke, the piston rod acts as a long compression column. The 160 mm rod diameter yields a slenderness ratio that places the rod well within the safe Euler buckling envelope for the applied compressive load. The 42CrMo4 alloy steel rod combines high yield strength with the fracture toughness verified by Charpy impact testing, which is particularly relevant for outdoor cranes that operate in cold weather conditions.<\/p>\n

Stroke and Working Range<\/h3>\n

The 2,200 mm stroke corresponds to the full angular range through which the boom must travel, typically from a low transport angle to the maximum rated working angle. The geometry of each crane model determines exactly how much cylinder extension is needed per degree of boom angle change. Replacement cylinders must match this stroke precisely; shortening or extending the stroke changes boom geometry and can restrict rated lifting capacity.<\/p>\n

Installation Distance \u2014 Replacement Compatibility<\/h3>\n

The 3,000 mm pin-to-pin installation distance is the primary fitment dimension. When ordering a replacement crawler crane luffing cylinder, this dimension \u2014 along with pin diameter and mounting style \u2014 determines whether the cylinder will fit without modification to the crane’s pin bores or mounting brackets. Deviating from this figure requires engineering review of the boom kinematics.<\/p>\n

Working Pressure and Maximum Withstand Pressure<\/h3>\n

The 31.5 MPa working pressure is the continuous operating pressure for which all internal components \u2014 barrel wall, end caps, ports, and seals \u2014 are designed. The 40 MPa maximum withstand pressure represents the proof load; this is the highest transient pressure the cylinder can experience without permanent deformation or seal damage. The 1.27\u00d7 pressure ratio between rated and maximum provides a built-in safety margin for pressure spikes generated by load arrest or emergency braking events in the crane hydraulic circuit.<\/p>\n

Adjustable End Cushioning<\/h3>\n

As the piston approaches either end of its travel, an internal cushioning sleeve or plunger redirects flow through a calibrated restriction, decelerating the piston gradually rather than stopping it against the end cap. The cushioning is field-adjustable via a needle valve so technicians can tune the deceleration rate to match the specific load and boom inertia of the crane being serviced.<\/p>\n

Sealing System<\/h3>\n

The piston and rod sealing system is assembled with multi-lip seals capable of sustained 31.5 MPa service. Dual guide rings in the rod gland carry radial loads away from the seal lips, which is critical for a heavy boom cylinder where wind loads and off-lead lifting angles can impose lateral forces on the rod. The external rod surface is protected by hard-chrome plating and a precision ground finish to minimise seal abrasion and resist corrosion.<\/p>\n<\/div>\n

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Application Areas<\/h2>\n