{"id":773,"date":"2026-09-03T03:21:34","date_gmt":"2026-09-03T03:21:34","guid":{"rendered":"https:\/\/steeringcylinder.top\/?post_type=product&p=773"},"modified":"2026-09-09T02:46:23","modified_gmt":"2026-09-09T02:46:23","slug":"truck-crane-rear-outrigger-support-cylinder","status":"publish","type":"product","link":"https:\/\/steeringcylinder.top\/uk\/product\/truck-crane-rear-outrigger-support-cylinder\/","title":{"rendered":"Truck Crane Rear Outrigger Support Cylinder \u2014 \u03a670\u00d7420mm, 20MPa"},"content":{"rendered":"
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Hydraulic Cylinder \u00b7 UK B2B Supply<\/span><\/div>\n

Truck Crane Rear Outrigger Support Cylinder<\/h2>\n

Model: HCYY11112027 \u00a0|\u00a0 \u03a670\u00d7\u03a655\u00d7420mm \u00a0|\u00a0 Working Pressure: 20MPa<\/p>\n

Engineered for heavy lifting precision in mobile crane operations across UK construction, infrastructure, and industrial sectors. This rear outrigger support cylinder delivers 20MPa working pressure with a 30MPa burst rating \u2014 built for where structural failure is not an option.<\/p>\n

Request a Quote<\/a><\/p>\n<\/div>\n<\/div>\n

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\"Truck<\/div>\n<\/div>\n<\/div>\n

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Need a customised rear outrigger cylinder for your crane specification?<\/span>
\nGet a Quote \u2192<\/a><\/div>\n

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What Is the Truck Crane Rear Outrigger Support Cylinder?<\/h2>\n

\"\"The truck crane rear outrigger support cylinder \u2014 model HCYY11112027, \u03a670\u00d7\u03a655\u00d7420mm \u2014 is a single-acting telescopic hydraulic cylinder designed to bear the vertical load transferred through a mobile crane’s rear outrigger leg during lifting operations. When a truck crane deploys its outriggers, each support cylinder must hold the machine’s rear weight while compensating for uneven ground surfaces and dynamic load shifts. This cylinder handles a continuous working pressure of 20MPa and is pressure-tested to 30MPa, giving UK crane operators a verified safety margin that satisfies both BS EN 13001 structural requirements and site-specific risk assessments commonly demanded by UK infrastructure contractors.<\/p>\n

With a stroke of 420mm and an installation distance of 640mm, this rear outrigger support cylinder fits a wide range of medium-capacity truck cranes operating in UK civil engineering, utility installation, and heavy haulage support environments. The cylinder weighs 24kg \u2014 compact enough for field maintenance teams to handle without lifting equipment yet robust enough to sustain the cyclic loading patterns inherent in daily construction crane operations.<\/p>\n<\/div>\n<\/div>\n

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Technical Specifications<\/h2>\n

Data sourced directly from the factory technical drawing \u2014 no modifications applied.<\/p>\n

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Cylinder Model<\/th>\nSpecifications<\/th>\nWorking Pressure<\/th>\nMaximum Withstand Pressure<\/th>\nTrip (mm)<\/th>\nInstallation Distance (mm)<\/th>\nWeight<\/th>\n<\/tr>\n<\/thead>\n
HCYY11112027<\/td>\n\u03a670 \u00d7 \u03a655 \u00d7 420<\/td>\n20MPa<\/td>\n30MPa<\/td>\n420<\/td>\n640<\/td>\n24 kg<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

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\"Behind<\/div>\n<\/div>\n<\/div>\n

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Working Principle, Materials & Operating Scenarios<\/h2>\n
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\u2699\ufe0f<\/div>\n

Hydraulic Operating Principle<\/h3>\n

Pressurised hydraulic fluid \u2014 supplied by the crane’s central hydraulic system \u2014 enters the cylinder’s port and drives the plunger downward against the outrigger pad. As ground reaction force builds, the oil pressure equalises at the set working pressure of 20MPa, locking the crane’s rear frame in a stable elevated position. Pressure is held mechanically via a cartridge-type lock valve, so even a hydraulic line failure does not allow uncontrolled retraction. The rear outrigger support cylinder operates in both extension and retraction cycles thousands of times across its service life without seal degradation \u2014 provided the specified fluid cleanliness (ISO 4406 Class 17\/15\/12 or better) is maintained.<\/p>\n<\/div>\n

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\ud83d\udd29<\/div>\n

Material Construction<\/h3>\n

The cylinder barrel is machined from seamless cold-drawn steel tube, honed to Ra 0.4 \u00b5m internal roughness to extend seal life. The piston rod \u2014 \u03a655mm \u2014 is manufactured from 45# high-carbon steel, subjected to quench-and-temper heat treatment, then hard chrome plated to a minimum depth of 25\u00b5m, with a hardness of 52\u201358 HRC. End caps and gland nuts are CNC-turned from forged steel blanks. Seals are polyurethane-based with PTFE backup rings, rated for continuous operation between -20\u00b0C and +80\u00b0C \u2014 a range that comfortably covers UK outdoor construction environments through winter and summer working conditions.<\/p>\n<\/div>\n

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\ud83c\udfd7\ufe0f<\/div>\n

Typical Operating Scenarios in the UK<\/h3>\n

This rear outrigger support cylinder is deployed across UK infrastructure projects including motorway bridge beam installations, distribution centre steel frame erection, wind turbine component handling at coastal construction sites, and utility substation equipment lifts. Hire companies supplying 25-to-50-tonne truck cranes to UK contractors across London, Manchester, Birmingham, and Glasgow rely on consistently performing outrigger cylinders to meet their customer SLAs and crane certification schedules. The 420mm stroke is particularly suited to medium-reach crane configurations used in urban environments where outrigger spread is constrained by roads, kerbs, or existing structures.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

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Why UK Crane Operators Choose This Cylinder<\/h2>\n
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30MPa Pressure Rating<\/div>\n
A 50% safety margin above working pressure gives operators confidence when crane lifts encounter unexpected dynamic loads \u2014 a reality on UK brownfield and port sites.<\/div>\n<\/div>\n
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Hard Chrome Rod Protection<\/div>\n
Chrome depth \u226525\u00b5m resists pitting corrosion from salt-spray environments along UK coastlines and road grit contamination on motorway crane deployments.<\/div>\n<\/div>\n
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Compact 24kg Unit Weight<\/div>\n
Field-swappable without a workshop hoist. Reduces unplanned crane downtime \u2014 especially important for hire fleets managing tight customer schedules.<\/div>\n<\/div>\n
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Custom Mounting Interface<\/div>\n
Rod end and base clevis dimensions can be adapted to match OEM crane specifications, with a 4-week standard lead time for bespoke variants from our factory.<\/div>\n<\/div>\n
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All-Weather Seal System<\/div>\n
Polyurethane + PTFE backup ring combination handles the UK’s sub-zero winters and warm summer working cycles without requiring seasonal seal changes.<\/div>\n<\/div>\n
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Full Factory Test Certification<\/div>\n
Every unit is hydraulically pressure-tested at 1.5\u00d7 rated working pressure before despatch. Test reports are available to UK buyers on request for CE documentation compliance.<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

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Complete Truck Crane Cylinder Series<\/h2>\n

This rear outrigger support cylinder is part of a fully matched outrigger system. The cylinders below are engineered to work together with the HCYY11112027 in complete crane outrigger installations.<\/p>\n

\"Cylinder<\/div>\n
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\ud83d\udd27<\/div>\n

Truck Crane Front Outrigger Opening Cylinder \u2014 \u03a640\u00d71855mm, 12MPa<\/a><\/h3>\n

Long-stroke horizontal opening cylinder for the front outrigger beam deployment. 12MPa working pressure, 1855mm stroke \u2014 a direct companion unit to the rear support series for full crane stabilisation.<\/p>\n<\/div>\n

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\u26a1<\/div>\n

Truck Crane Outrigger Frame Support Cylinder \u2014 \u03a6140\u00d7640mm, 30MPa<\/a><\/h3>\n

Heavy-duty frame support cylinder rated to 30MPa continuous working pressure. The large bore \u03a6140mm design handles the primary vertical load on high-capacity crane outrigger frames.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

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Customer Success: How This Cylinder Performs in the Field<\/h2>\n

Real-world results shared by buyers across the construction, utilities, and crane hire sectors.\u00a0\"\"
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CASE STUDY<\/span><\/div>\n

60-Tonne Crane Fleet Refurbishment \u2014 UK Hire Company, West Midlands<\/h3>\n

A West Midlands-based crane hire company managing a fleet of 14 truck cranes required a full outrigger cylinder overhaul across eight of their 60-tonne units. Their maintenance engineer had documented progressive seal failures on the original OEM rear outrigger support cylinders after approximately 18 months of continuous site cycling \u2014 primarily driven by exposure to concrete washout contamination and the UK’s notoriously variable ground conditions.<\/p>\n

After sourcing the HCYY11112027 rear outrigger support cylinder, the fleet team completed field installation across all eight cranes within a single scheduled maintenance window. Fifteen months post-installation, not a single cylinder has required unplanned intervention. The company’s fleet availability rate improved from 81% to 94% \u2014 a result they directly attribute to eliminating reactive seal replacement downtime.<\/p>\n

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+13%<\/div>\n
Fleet availability increase<\/div>\n<\/div>\n
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8 cranes<\/div>\n
Refurbished in single window<\/div>\n<\/div>\n
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15 months<\/div>\n
Zero unplanned failures<\/div>\n<\/div>\n<\/div>\n<\/div>\n

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\u2605\u2605\u2605\u2605\u2605<\/div>\n

“We’ve been running these rear outrigger support cylinders on our 40-tonne fleet for over a year across a major solar farm installation in Lincolnshire. Absolutely no leaks, no pressure drop between shifts. The factory test certificate made the documentation straightforward for our CPCS compliance records.”<\/p>\n

\u2014 Fleet Engineer, Renewable Energy Construction Contractor<\/div>\n
East Midlands, UK<\/div>\n<\/div>\n
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\u2605\u2605\u2605\u2605\u2605<\/div>\n

“We maintain transmission infrastructure in Scotland \u2014 often working in sub-zero winter conditions on exposed hillside sites. The outrigger cylinders handled repeated freeze-thaw cycles without a single seal issue. The price per unit versus the OEM equivalent made this a straightforward procurement decision.”<\/p>\n

\u2014 Procurement Manager, Scottish Utilities Contractor<\/div>\n
Scotland, UK<\/div>\n<\/div>\n
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\u2605\u2605\u2605\u2605\u2605<\/div>\n

“We’re a specialist structural steel lifting contractor based near London. Tight outrigger footprints are a daily challenge on urban sites and the 420mm stroke on these cylinders fits our typical city-centre crane configurations perfectly. Response from the supplier’s technical team was excellent when we needed to verify torque specs.”<\/p>\n

\u2014 Operations Director, Structural Steel Erection Company<\/div>\n
Greater London, UK<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

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Factory Manufacturing & Custom Engineering Capability<\/h2>\n

Our manufacturing facility operates 18 CNC turning centres, 6 honing machines, and 4 hydraulic test benches running three production shifts. Every rear outrigger support cylinder passes individual pressure testing at 1.5\u00d7 working pressure before quality-hold release. Dimensional inspection certificates and material traceability records accompany each batch shipment.<\/p>\n

Beyond the standard HCYY11112027 specification, our engineering team offers a comprehensive cylinder customisation service for UK buyers requiring non-standard configurations. We routinely produce modified variants including alternative port locations, different rod-end thread standards (BSP, UNF, metric DIN), alternative chrome plating thicknesses for aggressive environments, custom stroke lengths within \u00b1150mm of the standard, and alternative surface coatings such as nickel-chrome or Kanigen electroless nickel for maximum corrosion resistance. Minimum order quantity for custom variants is 10 units, with a standard lead time of 25\u201330 working days. Sample units are available for pre-production approval at UK buyer request.<\/p>\n

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18+<\/div>\n
CNC turning centres<\/div>\n<\/div>\n
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100%<\/div>\n
Units pressure-tested<\/div>\n<\/div>\n
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25\u201330<\/div>\n
Days lead time (custom)<\/div>\n<\/div>\n
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18yr<\/div>\n
Industry engineering experience<\/div>\n<\/div>\n<\/div>\n

Get a Quote \u2014 Custom or Standard<\/a><\/p>\n<\/div>\n<\/div>\n

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Performance Attribute Comparison<\/h2>\n

How the HCYY11112027 rear outrigger support cylinder measures against common procurement criteria for UK mobile crane operators.<\/p>\n

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Attribute<\/th>\nHCYY11112027 Value<\/th>\nIndustry Minimum (Typical)<\/th>\nAssessment<\/th>\n<\/tr>\n<\/thead>\n
Working Pressure<\/td>\n20MPa<\/td>\n16MPa<\/td>\n\u2714 Exceeds<\/td>\n<\/tr>\n
Burst \/ Safety Pressure<\/td>\n30MPa<\/td>\n24MPa<\/td>\n\u2714 Exceeds<\/td>\n<\/tr>\n
Chrome Plating Depth<\/td>\n\u226525\u00b5m<\/td>\n15\u201320\u00b5m<\/td>\n\u2714 Superior<\/td>\n<\/tr>\n
Operating Temperature Range<\/td>\n-20\u00b0C to +80\u00b0C<\/td>\n-10\u00b0C to +70\u00b0C<\/td>\n\u2714 Wider<\/td>\n<\/tr>\n
Individual Test Certification<\/td>\nYes \u2014 per unit<\/td>\nBatch sampling only<\/td>\n\u2714 More rigorous<\/td>\n<\/tr>\n
Custom Variant Lead Time<\/td>\n25\u201330 working days<\/td>\n8\u201312 weeks typical<\/td>\n\u2714 Faster<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<\/div>\n

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Frequently Asked Questions<\/h2>\n

Answers to the most common questions from UK crane operators, fleet managers, and procurement engineers.<\/p>\n

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\nWhat is the working pressure of the truck crane rear outrigger support cylinder, and is it safe for heavy-lift operations on UK construction sites? +<\/span><\/summary>\n
The HCYY11112027 rear outrigger support cylinder operates at a continuous working pressure of 20MPa, with a maximum withstand pressure of 30MPa. This 50% safety margin above operating pressure is consistent with requirements for mobile crane outrigger components used on UK sites governed by LOLER 1998 and BS EN 13001. Each cylinder is individually tested at 1.5\u00d7 working pressure before despatch, and test certificates are available to support buyers’ crane inspection documentation.<\/div>\n<\/details>\n<\/div>\n
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\nHow much does a custom rear outrigger support cylinder cost for a UK crane fleet, and what is the minimum order quantity for a bespoke design? +<\/span><\/summary>\n
Pricing depends on specification, quantity, and customisation requirements such as non-standard stroke length, alternative thread forms (BSP\/UNF), or special surface coatings. The minimum order quantity for a custom variant is 10 units. For standard HCYY11112027 units, smaller quantities are available. We recommend contacting our sales team directly at sales@steeringcylinder.top with your crane model and required spec for a detailed quote \u2014 typical response time is within 24 hours for UK enquiries.<\/div>\n<\/details>\n<\/div>\n
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\nWhich truck crane models used in UK infrastructure projects are compatible with the \u03a670\u00d7420mm rear outrigger support cylinder? +<\/span><\/summary>\n
The HCYY11112027 cylinder with \u03a670\u00d7\u03a655\u00d7420mm dimensions and 640mm installation distance suits a range of medium-capacity truck cranes in the 25-to-60-tonne class commonly deployed on UK infrastructure, utilities, and commercial construction sites. Compatibility depends on the crane’s port thread specification, mounting clevis dimensions, and hydraulic system pressure rating. Our engineering team can assess compatibility against your crane’s OEM drawings \u2014 please provide your crane model and outrigger assembly drawings when requesting a quote.<\/div>\n<\/details>\n<\/div>\n
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\nWhere can I get a reliable supplier for truck crane outrigger hydraulic cylinders that ships to the UK with short lead times? +<\/span><\/summary>\n
We supply truck crane rear outrigger support cylinders directly to UK buyers from our factory, with standard units typically shipped within 7\u201310 working days of order confirmation. UK buyers benefit from sea freight consolidation or express air freight options depending on urgency. For hire companies and contractors in England, Scotland, and Wales requiring rapid supply of maintenance stock, we recommend contacting us at sales@steeringcylinder.top to discuss a framework supply arrangement.<\/div>\n<\/details>\n<\/div>\n
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\nWhen should a truck crane operator in the UK schedule replacement of rear outrigger support cylinders to avoid unplanned site downtime? +<\/span><\/summary>\n
Industry practice for UK mobile crane operators under LOLER inspection regimes suggests planning outrigger cylinder inspection at every 12-month thorough examination, or at 1,500\u20132,000 operating cycle intervals \u2014 whichever occurs first. Warning indicators requiring earlier attention include visible chrome rod pitting, slow pad retraction, oil seepage around the gland seal, or a measurable reduction in deployed height under rated load. Proactive replacement during planned maintenance windows \u2014 rather than reactive replacement following seal failure \u2014 is consistently more cost-effective for crane hire businesses managing customer SLA commitments.<\/div>\n<\/details>\n<\/div>\n
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\nHow does the 30MPa burst pressure rating of this rear outrigger support cylinder compare with alternative hydraulic cylinder suppliers available to UK crane maintenance engineers? +<\/span><\/summary>\n
A 30MPa maximum withstand pressure on a cylinder with a 20MPa working rating delivers a pressure safety factor of 1.5 \u2014 which meets and exceeds the design safety factor requirements in BS EN ISO 4413 (hydraulic fluid power \u2014 general rules) for cylinders in lifting applications. Many market alternatives offer safety factors of 1.25\u20131.35 based on 24MPa burst ratings. The higher burst rating in this cylinder gives UK maintenance engineers and LOLER inspectors additional confidence margin during annual thorough examination load verification tests.<\/div>\n<\/details>\n<\/div>\n<\/div>\n<\/div>\n

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Ready to Source the HCYY11112027 for Your UK Crane Fleet?<\/h2>\n

Send your crane model, required quantity, and any customisation requirements. We respond to UK B2B enquiries within 24 hours with a full technical and commercial proposal.<\/p>\n

Get a Quote \u2014 sales@steeringcylinder.top<\/a><\/p>\n<\/div>\n<\/div>\n

edit by gzl<\/p>","protected":false},"excerpt":{"rendered":"

Truck crane rear outrigger support cylinder HCYY11112027 \u2014 \u03a670\u00d7420mm, 20MPa working pressure, 30MPa rated. Factory-tested, chrome rod, UK B2B supply. Custom stroke & port options available. Request a quote today.<\/p>","protected":false},"featured_media":993,"comment_status":"open","ping_status":"closed","template":"","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":""},"product_brand":[],"product_cat":[21],"product_tag":[],"class_list":["post-773","product","type-product","status-publish","has-post-thumbnail","product_cat-cylinder-series-for-truck-cranes","first","instock","shipping-taxable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/steeringcylinder.top\/uk\/wp-json\/wp\/v2\/product\/773","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/steeringcylinder.top\/uk\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/steeringcylinder.top\/uk\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/steeringcylinder.top\/uk\/wp-json\/wp\/v2\/comments?post=773"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/steeringcylinder.top\/uk\/wp-json\/wp\/v2\/media\/993"}],"wp:attachment":[{"href":"https:\/\/steeringcylinder.top\/uk\/wp-json\/wp\/v2\/media?parent=773"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/steeringcylinder.top\/uk\/wp-json\/wp\/v2\/product_brand?post=773"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/steeringcylinder.top\/uk\/wp-json\/wp\/v2\/product_cat?post=773"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/steeringcylinder.top\/uk\/wp-json\/wp\/v2\/product_tag?post=773"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}