Aerial Work Vehicle Steering Cylinder (125mm Stroke)

High-Pressure Rated Seals

Quad-ring and wiper seal assemblies rated to 30 MPa burst pressure prevent leakage during sudden load spikes — a critical requirement on rough-terrain platforms operating across UK industrial sites.

Precision-Honed Bore

The Φ40mm bore is finished to Ra 0.4 µm, delivering consistent oil-film retention and reducing internal friction — translating directly into smoother steering feel and extended seal service life across repeated duty cycles.

Compact 125mm Stroke

Designed for tight chassis envelopes found on compact scissor lifts and mini boom lifts, the 125mm stroke delivers the full steering lock angle demanded by MEWP design standards without requiring structural re-design of the axle carrier.

Corrosion-Resistant Chrome Rod

The Φ20mm piston rod is hard-chrome plated to a minimum 20 µm thickness, then ground and polished. This resists the salt-spray and moisture exposure typical of UK outdoor and coastal infrastructure maintenance work.

400mm Installation Distance

The 400mm pin-to-pin installation distance aligns with the common axle geometry of European and Chinese-manufactured compact platforms, allowing direct-fit replacement without bracket modification on compatible machines.

Lightweight at 2.8 kg

At just 2.8 kg, this steering cylinder contributes minimal unsprung mass — relevant for machine stability calculations required under EN 280 and PUWER regulations governing UK work-at-height equipment design and commissioning.

⚙ Operating Principle

Pressurised hydraulic fluid enters the cylinder through the port on the cap or rod end, depending on the intended steering direction. The pressure differential across the piston face — calculated as force = pressure x bore area — drives the rod to extend or retract. In a double-acting steering circuit, return oil is simultaneously expelled through the opposing port. This closed-loop action gives the operator proportional steering authority: the harder the circuit pressure, the stronger the steering force, up to the 20 MPa rated working limit. The integral end-cushioning design on both rod and cap ends dampens the piston at the end of its 125mm travel, absorbing kinetic energy that would otherwise produce impact loads on the mounting clevis or trunnion.

🔨 Key Materials

The cylinder barrel is drawn from seamless cold-rolled steel tube, chosen for its consistent wall thickness and superior tensile strength. The piston rod is produced from C45E alloy steel, induction-hardened to 56–62 HRC at the surface before hard-chrome plating — a specification that resists side-load deflection under the lateral forces generated by crabbing or slewing manoeuvres on compact platforms. The piston itself is manufactured from high-strength ductile iron and fitted with bronze guide rings that distribute radial load without scoring the bore surface. All external faces receive an epoxy-polyurethane primer and topcoat, giving resistance to UV exposure and the wet site conditions common in the UK construction sector.

🏗 Typical Application Scenarios

The HCYY11112004 steering cylinder is most frequently specified for compact scissor lifts in the 6–12 metre working height class, articulated boom lifts with 4WD drive systems, and trailer-mounted access platforms used in UK telecommunications and street lighting maintenance. It is equally suited to narrow-aisle order pickers and rough-terrain personnel carriers deployed in warehouse and distribution hub environments across Greater London, the Midlands, and Northern England. For fleet operators maintaining mixed MEWP fleets, this cylinder’s standardised port sizing and installation geometry simplify stock management and reduce machine downtime during planned maintenance intervals.

Forklift Attachment Cylinder

Bore Φ90mm, 265mm stroke. Designed for sideshift, rotator, and push-pull forklift attachments requiring high radial load capability and precise travel control.

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Forklift Attachment Cylinder

Bore Φ125mm, 200mm stroke. For heavier forklift attachment duty cycles, providing greater force output while maintaining compact overall body length.

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“The cylinders landed within ten days of our purchase order. The bore finish is visibly different to what we had before — you can see the oil film retention. Eighteen months in, every machine is still steering cleanly.”

— Workshop Manager, Yorkshire Plant Hire Group (name withheld on request)

“We source hydraulic cylinders for our maintenance programme across a portfolio of 120 boom lifts in the UK market. Ever-Power’s lead time and documentation package — including full material certs — made the approvals process straightforward with our procurement team.”

Senior Procurement Officer

Facilities Management Firm · London, UK

“We specified custom rod-end thread sizes on four cylinders to match our proprietary steering linkage. Boom Cylinders confirmed the engineering drawing review and revised sample within three weeks — that kind of flexibility is rare from an overseas supplier at this price point.”

Design Engineer

MEWP Manufacturer · West Midlands, UK

“Operating in the utility sector, our platforms work in rain and coastal air year round. These cylinders have held up where the previous brand didn’t — the chrome rod shows no pitting after two full winter seasons out on the Scottish coast.”

Equipment Coordinator

Utility Infrastructure Contractor · Scotland, UK

Bore Range

From Φ25mm to Φ320mm in standard steel, stainless, and chrome-molybdenum alloys.

Seal Options

Standard NBR, HNBR for elevated temperatures, PTFE-lined for low-friction applications, and FKM for phosphate-ester fluid compatibility.

Documentation

Material certs (EN 10204 3.1), hydrostatic test reports, dimensional inspection sheets, and CE declaration of conformity available on request.

Lead Time

Standard catalogue: 7–14 days from confirmed order. Custom-engineered designs: 3–6 weeks from drawing sign-off, with sample submission before bulk dispatch.