{"id":1822,"date":"2026-09-09T07:05:16","date_gmt":"2026-09-09T07:05:16","guid":{"rendered":"https:\/\/metalite.net\/?post_type=product&p=1822"},"modified":"2026-09-09T07:18:03","modified_gmt":"2026-09-09T07:18:03","slug":"hcyy11112019-crawler-crane-boom-anti-tip-hydraulic-cylinder","status":"publish","type":"product","link":"https:\/\/metalite.net\/fr_ca\/produit\/hcyy11112019-crawler-crane-boom-anti-tip-hydraulic-cylinder\/","title":{"rendered":"Crawler Crane Boom Anti-Tip Hydraulic Cylinder \u2013 Model HCYY11112019 | \u03a6190\u00d7\u03a6160\u00d71400, 31.5 MPa"},"content":{"rendered":"

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Model HCYY11112019<\/p>\n

Crawler Crane Boom Anti-Tip Hydraulic Cylinder<\/h2>\n

\u03a6190 \u00d7 \u03a6160 \u00d7 1400 mm \u00b7 31.5 MPa working pressure \u00b7 820 kg \u2014 The lateral stability guardian that stops the boom from going where it should never go.<\/p>\n

\u03a6190 mm Bore<\/span>
\n1400 mm Stroke<\/span>
\n31.5 MPa \/ 40 MPa<\/span>
\n820 kg<\/span><\/div>\n<\/div>\n
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The Anti-Tip Cylinder: Why the Most Important Safety Component on a Crawler Crane Rarely Gets Talked About<\/h2>\n

The crawler crane boom anti-tip hydraulic cylinder<\/strong> (HCYY11112019) doesn’t lift anything. It doesn’t lower anything. Its entire purpose is to prevent the boom from tipping sideways \u2014 the one failure mode in crane operation that offers essentially zero recovery time once it begins. When a lattice boom starts moving laterally out of the crane’s lifting plane, the anti-tip cylinder is the last active mechanical element standing between a controlled lift and a catastrophic structural collapse.<\/p>\n

\"HCYY11112019<\/p>\n

Lateral boom instability on a crawler crane can be triggered by several real-world events: an off-center load that develops a swing, a side pull during rigging, wind loading on a large surface-area boom, or a crane traveling on a cross-slope with a suspended load. In all of these cases, the boom stabilizer cylinder<\/strong> is the active structural member that resists lateral displacement at the boom’s mid-section \u2014 preventing the kind of progressive tipping that no amount of operator reaction time can stop once it passes a critical threshold.<\/p>\n

At \u03a6190 mm bore and 820 kg, the HCYY11112019 is the second-heaviest cylinder in the crawler crane hydraulic circuit. Its unusually long installation distance of 4300 mm relative to its 1400 mm stroke reflects the geometry of its mounting position \u2014 spanning a wide lateral brace point on the boom structure to maximize the moment arm available for resisting lateral tipping forces.<\/p>\n<\/div>\n

\"HCYY11112019<\/p>\n

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Technical Specifications \u2014 HCYY11112019 Boom Anti-Tip Hydraulic Cylinder<\/h2>\n
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Parameter<\/th>\nValue<\/th>\nEngineering Context<\/th>\n<\/tr>\n<\/thead>\n
Model<\/td>\nHCYY11112019<\/td>\nCrawler crane boom anti-tip \/ lateral stabilizer series<\/td>\n<\/tr>\n
Bore \u00d7 Rod \u00d7 Stroke<\/td>\n\u03a6190 \u00d7 \u03a6160 \u00d7 1400 mm<\/td>\nNear equal bore-to-rod ratio: bidirectional force capacity for both push and pull lateral loading<\/td>\n<\/tr>\n
Working Pressure<\/td>\n31.5 MPa<\/td>\nPush force \u2248 894 kN; pull force \u2248 633 kN at rated pressure<\/td>\n<\/tr>\n
Max Withstand Pressure<\/td>\n40 MPa<\/td>\n27% overpressure safety margin; impact-load rated<\/td>\n<\/tr>\n
Stroke (Trip)<\/td>\n1400 mm<\/td>\nAccommodates full lateral adjustment range of boom brace geometry<\/td>\n<\/tr>\n
Installation Distance<\/td>\n4300 mm<\/td>\nWide lateral span maximizes anti-tip moment arm; the largest installation distance of the three crane cylinders<\/td>\n<\/tr>\n
Weight<\/td>\n820 kg<\/td>\nSecond-heaviest cylinder in the crawler crane system<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
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894 kN<\/p>\n

Push force at 31.5 MPa<\/p>\n<\/div>\n

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633 kN<\/p>\n

Pull force at 31.5 MPa<\/p>\n<\/div>\n

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4300 mm<\/p>\n

Installation span (widest of the 3 cylinders)<\/p>\n<\/div>\n

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40 MPa<\/p>\n

Max withstand pressure<\/p>\n<\/div>\n<\/div>\n

\"HCYY11112019<\/h2>\n

What Makes the Anti-Tip Cylinder Different From Every Other Cylinder on the Crane<\/h2>\n

Most hydraulic cylinders on a crane operate in a predictable, single-direction load cycle: extend to lift, retract to lower, hold at a fixed position. The crane boom lateral support cylinder<\/strong> doesn’t follow that pattern. It operates in a fundamentally different load regime \u2014 one where the primary loads are lateral rather than axial, where the cylinder may spend most of its service life locked at a fixed extension with no active cycling, and where the critical performance requirement is not force output but structural rigidity under side-load<\/strong>.<\/p>\n

Notice the \u03a6190 bore paired with a \u03a6160 rod \u2014 a bore-to-rod ratio of just 1.19:1. That’s unusual. Most hydraulic cylinders use a 2:1 or larger bore-to-rod ratio to maximize push force. The near-equal dimensions on the HCYY11112019 are deliberate: when the primary threat is a side-tipping force rather than a vertical lifting load, you want maximum rod stiffness in both extension and retraction directions. The fat rod reduces the annular area differential between push and pull \u2014 giving 833 kN push and 633 kN pull<\/strong> \u2014 but more importantly, it raises the rod’s second moment of area, dramatically increasing resistance to lateral bending under transverse load.<\/p>\n

The 4300 mm installation distance is the most telling specification on this cylinder. While the stroke is only 1400 mm, the cylinder spans 4300 mm across the boom’s lateral brace structure. This wide span is the geometric source of the anti-tip function: the longer the moment arm from the boom centerline to the cylinder attachment point, the smaller the force required in the cylinder to resist a given lateral tipping moment. A cylinder mounted close to the boom centerline would need to be enormously strong to do the same job \u2014 the wide-span geometry trades installation real estate for manageable cylinder loads.<\/p>\n

The 40 MPa withstand pressure on this cylinder also needs to be understood in the context of dynamic loading. Anti-tip events \u2014 an unexpected load swing, a gust of wind, a sudden side-pull during rigging \u2014 generate impact loads rather than slow static pressure buildup. The 8.5 MPa margin above working pressure must absorb those impact spikes without triggering the relief valve, which would allow momentary lateral displacement of the boom before pressure rebuilds.<\/p>\n

Operating Conditions Where the Boom Anti-Tip Cylinder Is Put to the Test<\/h2>\n

The HCYY11112019 is continuously loaded during every operation where lateral boom stability is at risk. That covers more scenarios than most operators think:<\/p>\n

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  • Tandem and assisted lifts<\/strong> \u2014 where two cranes share a load and a coordination error can generate sudden lateral forces on one boom while the other takes the imbalance<\/li>\n
  • Lifts in wind-exposed environments<\/strong> \u2014 offshore platforms, coastal construction, and open-site infrastructure work where wind loading on a large lattice boom creates sustained lateral force at the boom tip<\/li>\n
  • Cross-slope crane travel with suspended load<\/strong> \u2014 where gravity acts laterally on both the load and the boom, and the anti-tip cylinder must resist the combined moment on every metre of travel<\/li>\n
  • Load swing during pick-and-carry operations<\/strong> \u2014 where the load pendulums laterally and the impulse load reaches the boom structure through the rigging<\/li>\n
  • Emergency stops and braking events<\/strong> \u2014 where inertia of the suspended load continues forward while the crane decelerates, generating transverse forces at the boom connection<\/li>\n<\/ul>\n

    Construction Details \u2014 Engineered for Lateral Rigidity, Not Just Axial Force<\/h2>\n
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    Cylinder Barrel<\/p>\n

    Seamless forged steel (27SiMn), precision-honed ID Ra \u2264 0.4 \u03bcm. Wall section designed for 40 MPa burst with lateral bending stress component included in FEA analysis \u2014 unlike purely axial cylinder designs.<\/p>\n<\/div>\n

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    Heavy-Section Rod<\/p>\n

    \u03a6160 mm 42CrMo4 rod \u2014 same diameter as the boom hoist cylinder despite a smaller bore. This is intentional: the fat rod section maximizes lateral bending stiffness (I = \u03c0d\u2074\/64) for anti-tip load resistance.<\/p>\n<\/div>\n

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    Gland & Bearing<\/p>\n

    Extended rod gland with bronze bearing bush, length-to-diameter ratio \u2265 1.0. The long gland bearing distributes lateral bending moments across a wider surface, preventing point loading on the rod seal under transverse forces.<\/p>\n<\/div>\n

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    Seal Package<\/p>\n

    PU\/PTFE composite piston seals with anti-extrusion rings rated to 40 MPa impact pressure. Double-lip rod seal with heavy-duty scraper wiper. Rated \u221230 \u00b0C to +90 \u00b0C for year-round heavy construction service.<\/p>\n<\/div>\n

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    End Mounts<\/p>\n

    Heavy forged-steel clevis ends, pin bores at H7 tolerance. Spherical self-aligning bearings standard \u2014 critical for an anti-tip cylinder that experiences off-axis loading as the boom deflects under lateral force.<\/p>\n<\/div>\n

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    Load-Holding Valve<\/p>\n

    Dual pilot-operated counterbalance valves fitted on both ports \u2014 the anti-tip cylinder must hold its position under load in both extend and retract directions, since tipping threats come from either lateral side.<\/p>\n<\/div>\n<\/div>\n

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    Crawler Crane Hydraulic Cylinder Installation Positions<\/p>\n

    \"Installation<\/p>\n

    The anti-tip cylinder mounts laterally across the boom structure \u2014 its 4300 mm installation span provides the moment arm needed to resist lateral tipping forces during lifts and travel.<\/p>\n<\/div>\n

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    Installation Notes \u2014 Getting the 4300 mm Span Right<\/h2>\n

    The HCYY11112019 has the largest installation distance of any cylinder in this crane system \u2014 4300 mm pin-to-pin. That span makes alignment during installation more sensitive than on the hoist or frame cylinders:<\/p>\n