Crawler Crane Boom Anti-Tilt Cylinder — Φ190mm Bore, 1400mm Stroke

Hydraulic Cylinder · Crawler Crane · UK Supply

Crawler Crane Boom Anti-Tilt Cylinder — Φ190mm Bore, 1400mm Stroke

When a crawler crane lifts at extreme radius, the boom’s rearward momentum can become catastrophic in seconds. The Boom Anti-Tilt Cylinder (model HCYY11112019) is an engineered restraint solution built to hold a Φ190 × Φ160 × 1400mm configuration at 31.5 MPa working pressure, rated to 40 MPa maximum withstand. UK crane operators, rental fleets, and infrastructure contractors have relied on this cylinder to keep long-boom crawler cranes compliant with BS EN 13000:2010+A1:2014 and on-site safety schemes.

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In a crawler crane, the boom exerts enormous rearward moment forces whenever the load swings wide or the luffing angle exceeds safe geometry. Without active restraint, the boom base pins are subjected to shear forces that accelerate fatigue and can lead to sudden structural failure. The Boom Anti-Tilt Cylinder — formally designated the Cylinder for Preventing Rear Tilt of Boom — acts as a controlled hydraulic buffer mounted between the crawler undercarriage frame and the lower boom section. Under normal operation, the cylinder maintains a measured, pressure-regulated extension. When rear-tilt forces exceed the set threshold, the cylinder absorbs and redistributes those forces through its hydraulic circuit rather than allowing them to transmit directly to the boom pin joints.

The working principle is straightforward: the cylinder bore (Φ190mm) and rod (Φ160mm) are matched to deliver an optimal area ratio that ensures smooth, predictable force transfer across the full 1400mm stroke. The 31.5 MPa rated circuit connects to the crane’s existing hydraulic power unit via high-pressure hose assemblies. An internal relief path limits circuit pressure to 40 MPa under peak dynamic loading, protecting both the cylinder seals and the boom structure from overload. UK contractors operating Liebherr LR1300, Manitowoc 2250, or Kobelco CK2000 class machines will recognise this load-management logic immediately — it is the same principle used in modern counterweight-assist and luffing-jib stabilisation systems, now applied specifically to the rear-tilt axis.

Case Study · Offshore Wind · Scotland, UK

Replacing a Failed OEM Anti-Tilt Cylinder on a 600-Tonne Crawler Crane Mid-Project

A specialist heavy-lift contractor based in Aberdeen was mid-installation on a North Sea offshore wind substation jacket when their primary crawler crane’s boom anti-tilt cylinder developed a catastrophic rod seal failure at 28 MPa working pressure. The OEM lead time for a direct replacement was quoted at 18 weeks — an unacceptable delay given the weather window and vessel charter costs running at approximately GBP 120,000 per day.

Their engineering director contacted our technical team via email on a Tuesday. Within 48 hours we had confirmed that model HCYY11112019 was a dimensional match for their crane’s mounting geometry after reviewing their CAD drawings and the original OEM part number. Stock was available, and the cylinder shipped from our facility within five working days. Air freight via Heathrow to Aberdeen Airport meant the unit was on-site within nine calendar days of the initial enquiry. The Aberdeen service team completed installation and recommissioning in under eight hours.

The project resumed lifting operations within eleven days of the original failure — saving an estimated GBP 1.1 million in downtime costs compared to the OEM route. The contractor has since placed standing orders for two spare HCYY11112019 units held in their Aberdeen yard for the remaining duration of the wind farm construction programme.

Our production facility operates 16 CNC deep-hole boring machines, 8 precision honing lines, and 4 automated hard-chrome plating baths — all within a single 22,000 m² manufacturing campus. Every boom anti-tilt cylinder passes through an automated dimensional inspection station before entering pressure test. The facility holds ISO 9001:2015 certification with scope covering design, manufacture, and test of hydraulic cylinders up to 500mm bore and 10,000mm stroke.

Custom product engineering is a core service, not an afterthought. UK clients regularly commission modified versions of the HCYY11112019 with alternative rod diameters, repositioned port faces for tighter crane body clearances, alternative end fitting geometries to match non-standard boom pin configurations, and enhanced corrosion protection packages for offshore or coastal applications. Our in-house design team works in SolidWorks and can supply 3D STEP models for client engineering review before manufacture begins. Minimum order for a custom cylinder is one unit; there are no tooling charges for bore and stroke variations within standard tooling ranges.

If your crawler crane’s boom anti-tilt cylinder specification falls outside the HCYY11112019 parameters, contact our technical team with your dimensional drawings and operating pressure requirements. We will provide a formal quotation within three business days.