Truck Crane Outrigger Frame Support Cylinder — Φ140×640mm, 30MPa

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30 MPa Rated Pressure

Handles continuous high-load outrigger operations without pressure-relief incidents, maintaining safe crane posture during every lift cycle.

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40 MPa Burst Withstand

Tested to 40 MPa maximum withstand pressure, giving a genuine safety margin above operating conditions — critical on busy UK job sites.

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Compact 640mm Stroke

A 640 mm trip with 983 mm installed length fits neatly into outrigger box structures, requiring no chassis modification on most common crane platforms.

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Precision-Honed Bore

The Φ140 mm bore is precision-honed to Ra 0.4 μm, ensuring low seal wear and consistent performance even after thousands of extension cycles in demanding field conditions.

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123 kg Managed Weight

At 123 kg, the cylinder balances structural integrity with a weight that service teams can handle safely during on-site replacement, reducing downtime for crane operators.

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Custom Configuration Available

Port dimensions, clevis ends, rod coatings and seal materials can all be tailored to fit non-standard crane platforms, ideal for UK special-purpose equipment builders.

▶ Operating Principle

The outrigger support cylinder operates as a double-acting linear actuator. Hydraulic fluid is directed under pressure into the cap-end port, driving the Φ120 mm piston rod downward to extend the outrigger pad onto the ground surface. Pressure is maintained by pilot-operated check valves in the crane’s hydraulic circuit, locking the outrigger in position while the superstructure rotates and hoists loads. On retraction, fluid is routed to the rod-end port. The design delivers both extension force and retraction force fully under hydraulic control, providing predictable deployment behaviour on uneven terrain commonly encountered across British construction and infrastructure sites.

🔧 Material Construction

The cylinder barrel is fabricated from seamless cold-drawn steel tube, heat-treated for a minimum tensile strength of 600 MPa, then precision-honed to achieve a smooth internal surface finish. The piston rod is manufactured from high-strength alloy steel, centreless-ground and hard-chrome plated to a minimum 25 μm depth for corrosion resistance. Composite guide rings and polyurethane rod seals are selected for low-friction operation and compatibility with mineral hydraulic oil operating at temperatures from -20°C to +80°C, matching the climate demands of year-round outdoor use throughout England, Scotland and Wales.

🏭 Application Scenarios

This outrigger support cylinder suits a broad range of UK deployment contexts. In urban construction — tower block refurbishment, bridge deck replacement, or utilities trenching — it stabilises truck-mounted cranes working in confined site envelopes where a compact 640 mm stroke is a key requirement. In port and logistics environments, it supports mobile cranes handling containerised cargo at facilities including Tilbury, Southampton and Immingham. Industrial maintenance teams at chemical plant sites and steel works in the North of England and Wales also rely on this cylinder specification for planned maintenance lifts, where cylinder reliability directly affects production continuity. Rental fleet operators value its straightforward seal-kit maintenance programme.

Outrigger System

Truck Crane Outrigger Rack Opening Cylinder — Φ70×1237mm, 20 MPa

The rack extension cylinder that slides the outrigger beam horizontally out from the carrier chassis before the vertical support cylinder deploys to ground. Bore Φ70 mm, stroke 1237 mm, rated at 20 MPa — a slender, long-stroke design that fits within narrow outrigger box sections.

Luffing System

Truck Crane Main Boom Luffing Cylinder — Φ280×3507mm, 31.5 MPa

The primary luffing actuator for the main boom, handling the full elevated load during pick-and-carry operations. Bore Φ280 mm, stroke 3507 mm, rated at 31.5 MPa — one of the most demanding cylinder positions on any all-terrain or rough-terrain crane platform.

★★★★★

“We operate twelve truck cranes across civil infrastructure contracts throughout the East Midlands. After having repeat seal failures on a previous supplier’s outrigger cylinders, we switched to the HCYY11112023 specification. Eighteen months in, we have had zero unplanned cylinder replacements. The 30 MPa rating gives us confidence on heavy concrete panel lifts where other cylinders were borderline. Lead times and documentation from the supplier were both excellent.”

James Hollingworth — Fleet Engineering Manager

Midlands Civil Plant Hire Ltd, Nottingham, UK

★★★★★

“We source replacement outrigger cylinders for our mobile crane rental fleet across Scotland and the North of England. This cylinder matched OEM dimensional references and arrived with full test certificates. The hard-chrome rod finish has held up extremely well in the wet conditions we work in throughout the Scottish Highlands and on coastal wind-farm construction projects. We have now standardised on this model across five crane types.”

Fiona MacDonald — Procurement Director

Northern Crane Solutions Ltd, Glasgow, UK

★★★★★

“As a port equipment maintenance contractor at Tilbury, downtime is measured in hours, not days. We needed a reliable outrigger cylinder that we could source with quick turnaround and proper technical data. The HCYY11112023 came with dimensional drawings, a pressure test certificate, and seal-kit part numbers. It went straight onto our gantry crane service truck without any rework. We have since placed a standing order for two units per quarter as buffer stock.”

Ryan Okafor — Workshop Supervisor

Thames Port Engineering Services, Tilbury, Essex, UK

Our hydraulic cylinder manufacturing facility operates to ISO 9001 quality management standards with a vertically integrated production process — from raw steel tube through to fully assembled and pressure-tested cylinder units. CNC honing machines hold bore tolerances to H8 class across all cylinder diameters. Automated hard-chrome plating lines apply consistent coating thicknesses verified by eddy-current measurement on every rod.

For UK crane OEMs, aftermarket suppliers and plant hire operators who need something beyond a standard catalogue part, our dedicated custom engineering team handles a full range of modifications. We can alter the bore diameter, rod diameter, stroke length, end connection geometry, cushioning specification, and port thread standard (BSP or metric) to match your existing crane circuit. Alternative seal compounds — including FKM Viton grades for use with fire-resistant HFD fluids — are available as a no-charge option on custom orders. Customers with multiple crane types in their fleet frequently ask us to consolidate around a single seal-kit specification to simplify their parts inventory, and this is something we actively design for.

Customisable Parameters

✓  Bore diameter (Φ50 – Φ320 mm)

✓  Stroke length (up to 6000 mm)

✓  End connection type (clevis, flange, trunnion)

✓  Port standard (BSP / NPT / metric)

✓  Cushioning (cap-end, rod-end or both)

✓  Seal material (PU / NBR / FKM Viton)

✓  Surface coating (hard chrome / nickel)

✓  Pressure rating up to 45 MPa

What is the price of a truck crane outrigger support cylinder that can handle 30 MPa working pressure for a UK construction fleet?

Pricing depends on order volume, delivery location within the UK, and any custom specification requirements such as alternative seal materials or modified end connections. To receive an accurate quote for the HCYY11112023 outrigger support cylinder, please contact us at [email protected]. We typically respond to UK enquiries within one business day and can provide a landed cost including documentation for your procurement team.

How do I know if the HCYY11112023 outrigger cylinder will fit my specific truck crane model operating in the UK?

The key dimensions to check are bore Φ140 mm, rod diameter Φ120 mm, stroke 640 mm, and installed length 983 mm. These align with a range of medium-duty truck-mounted crane platforms. If you can share your crane OEM part number or a drawing showing the cylinder envelope, we can confirm compatibility or identify any minor customisation required — this service is provided at no cost to UK customers.

Where can I find a reliable supplier of truck crane hydraulic outrigger cylinders who can ship to England, Scotland and Wales?

We supply hydraulic cylinders to customers throughout the United Kingdom, including construction plant hire operators in England, quarry and mining maintenance teams in Wales, and offshore support equipment providers in Scotland. Shipments are DDP (Delivered Duty Paid) to your UK facility, and we work with established freight partners to provide reliable lead times. Contact [email protected] to discuss your delivery address and requirements.

What seal kit should I order when maintaining a hydraulic outrigger support cylinder rated at 30 MPa on a mobile crane working in wet UK weather conditions?

For standard mineral oil systems, we recommend the polyurethane rod seal and NBR static O-ring kit, which performs reliably from -20°C to +80°C — more than adequate for UK seasonal temperature ranges. For cranes operating with HFD fire-resistant fluid (common in steelworks, foundries and certain port applications), an FKM Viton seal kit is the correct choice. We supply seal kits for the HCYY11112023 as a standard aftermarket item; please quote the cylinder model number when ordering.

How long does it typically take to get a custom-specification outrigger cylinder manufactured and delivered to a construction site in London or Birmingham?

Standard catalogue cylinders like the HCYY11112023 are typically available from stock and can be shipped within 5–10 working days to a UK address. Custom-engineered variants — modified stroke, non-standard bore, or alternative end fittings — generally require 4–6 weeks from drawing approval to despatch. We recommend contacting our team early in your project programme to align production scheduling with your site mobilisation dates.

Which industries in the United Kingdom most commonly use Φ140mm bore outrigger support cylinders rated at 30 MPa for crane stabilisation?

The Φ140×640 mm outrigger support cylinder at 30 MPa is particularly prevalent in UK construction, port and terminal handling, renewable energy installation (onshore wind and solar farm civil works), rail infrastructure maintenance, and industrial plant maintenance. Crane rental companies serving these sectors are the primary buyers, alongside OEM crane builders and specialist engineering contractors. In Scotland, the offshore energy support sector also represents a significant application area for this cylinder specification.