{"id":1624,"date":"2026-09-09T05:36:35","date_gmt":"2026-09-09T05:36:35","guid":{"rendered":"https:\/\/boom-cylinders.com\/?post_type=product&p=1624"},"modified":"2026-09-09T06:47:31","modified_gmt":"2026-09-09T06:47:31","slug":"hcyy11112020-crawler-crane-frame-support-cylinder","status":"publish","type":"product","link":"https:\/\/boom-cylinders.com\/ko\/product\/hcyy11112020-crawler-crane-frame-support-cylinder\/","title":{"rendered":"Crawler Crane Frame Support Cylinder"},"content":{"rendered":"
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Crawler Crane Hydraulics \u00b7 UK Supply<\/span><\/div>\n

Crawler Crane Frame Support Cylinder \u2014 Built for Heavy-Lift Stability<\/h2>\n

High-pressure hydraulic cylinders engineered for crawler crane frame stabilisation. Model HCYY11112020 \u2014 30 MPa working pressure, \u03a6170\u00d7\u03a6150\u00d7800 mm specification, precision-manufactured for UK and global heavy equipment markets.<\/p>\n

\uacac\uc801 \ubc1b\uae30 \u2192<\/a><\/p>\n<\/div>\n

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What Is a Crawler Crane Frame Support Cylinder?<\/h2>\n

\"CylinderA crawler crane frame support cylinder is a structural hydraulic actuator mounted within the crane’s lower frame assembly. Its primary function is to transfer vertical and lateral loads from the upper slewing body down through the crawler undercarriage, maintaining absolute positional integrity during pick-and-carry operations, lifts on sloped terrain, and heavy-load sustained holds. Unlike standard hydraulic cylinders used in boom or jib actuation, a frame support cylinder must sustain static load for extended periods without drift \u2014 a capability that demands exceptional seal quality and cylinder bore finishing.<\/p>\n

In UK construction and infrastructure projects \u2014 from offshore wind farm component lifts to bridge beam installation \u2014 crawler crane stability directly determines site safety compliance. The HCYY11112020 frame support cylinder we supply operates at 30 MPa working pressure with a maximum withstand pressure of 40 MPa, making it suited to the 250-tonne to 650-tonne crane classes widely deployed on British civil engineering sites. Its \u03a6170\u00d7\u03a6150\u00d7800 mm specification provides the bore-to-rod ratio needed for compressive load dominance, the core requirement in any vertical support role.<\/p>\n<\/div>\n

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How It Works<\/h3>\n

Hydraulic fluid is delivered under pressure from the crane’s central hydraulic power unit through a dedicated manifold circuit to the cylinder’s cap-end port. The differential area between the full bore (\u03a6170 mm) and the rod side (\u03a6150 mm) produces a net extension force that bears against the frame mounting interface. Once the rated stroke of 800 mm is achieved, the holding valve closes and the cylinder maintains pressure mechanically. A pilot-operated check valve upstream prevents any gradual retraction under sustained load \u2014 a failure mode that would cause catastrophic frame tilt. The cylinder’s 1140 mm installation distance accounts for the cushioning end-stroke geometry, preventing shock loading on the rod seal at full extension.<\/p>\n<\/div>\n

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Materials & Construction<\/h3>\n

The cylinder barrel is machined from seamless cold-drawn alloy steel tube \u2014 typically 27SiMn or equivalent EN10210 grade \u2014 then honed to Ra 0.4 \u00b5m internal surface finish. The piston rod uses 42CrMo4 (EN 10083-3) quenched and tempered steel, hard chrome plated to 25\u201330 \u00b5m minimum, ground and polished to Ra 0.2 \u00b5m. This combination ensures the dynamic seal runs on a corrosion-resistant, dimensionally stable surface through the full temperature range encountered on UK outdoor construction sites (-10 \u00b0C to +60 \u00b0C). The piston seal stack typically uses imported Hallite or Parker polyurethane lip seals plus PTFE back rings, chosen for their near-zero compression set under sustained static load \u2014 exactly what frame support service demands.<\/p>\n<\/div>\n

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\uc751\uc6a9 \uc2dc\ub098\ub9ac\uc624<\/h3>\n

These cylinders operate in some of the most demanding environments in the lifting industry. On UK wind farm projects \u2014 particularly in Scotland and Yorkshire where large turbine nacelles must be lifted in moderate wind conditions \u2014 the frame support cylinder holds the crane’s lower body rigid against the moment generated by the extended boom. In Thames Crossing infrastructure work, crawler cranes use frame support cylinders to maintain level while operating from prepared pads over variable ground bearing capacity. Nuclear new-build sites such as Hinkley Point C have strict equipment reliability standards, where any hydraulic drift is a reportable event. The HCYY11112020 is sized precisely for these sustained-hold, no-drift-tolerance applications.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

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Why Engineers Specify This Cylinder<\/h2>\n
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\ud83d\udd12<\/div>\n

Zero-Drift Static Hold<\/h4>\n

Pilot-operated check valve circuit maintains position under load for shift-long hold durations without measurable retraction.<\/p>\n<\/div>\n

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\u2699\ufe0f<\/div>\n

40 MPa Peak Pressure Rating<\/h4>\n

Safety factor over the 30 MPa working rating absorbs pressure spikes during dynamic load events without seal failure or barrel deformation.<\/p>\n<\/div>\n

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

OEM-Matched Geometry<\/h4>\n

1140 mm installation distance and clevis\/flange mounting options match major crawler crane OEM frame interfaces for direct drop-in replacement.<\/p>\n<\/div>\n

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\ud83c\udf27\ufe0f<\/div>\n

UK-Climate Seal Package<\/h4>\n

Low-temperature polyurethane and NBR seals maintain elasticity through British winter conditions, preventing early-cycle seal cracking.<\/p>\n<\/div>\n

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\ud83d\udccf<\/div>\n

Hard Chrome Rod Surface<\/h4>\n

25\u201330 \u00b5m chrome deposit ground to Ra 0.2 \u00b5m resists corrosion from coastal salt spray and mud ingress common on UK ground-works sites.<\/p>\n<\/div>\n

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\ud83d\udd27<\/div>\n

Field-Serviceable Design<\/h4>\n

Bolted gland head allows seal replacement in the field without returning the cylinder to the factory, reducing crane downtime to under four hours.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

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Technical Specification \u2014 HCYY11112020<\/h2>\n

Data reproduced from official factory catalogue. All dimensions in mm unless otherwise noted.<\/p>\n

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\"Cylinder<\/div>\n

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\n\n\n\n\n\n
\uc6d0\ud1b5\ud615 \ubaa8\ub378<\/th>\nSpecifications (mm)<\/th>\n\uc791\ub3d9 \uc555\ub825<\/th>\n\ucd5c\ub300 \ub0b4\uc555\ub825<\/th>\n\uc774\ub3d9 \uac70\ub9ac(mm)<\/th>\n\uc124\uce58 \uac70\ub9ac(mm)<\/th>\n\ubb34\uac8c<\/th>\n<\/tr>\n<\/thead>\n
HCYY11112020<\/td>\n\u03a6170 \u00d7 \u03a6150 \u00d7 800<\/td>\n30 MPa<\/td>\n40 MPa<\/td>\n800<\/td>\n1140<\/td>\n262 kg<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Note: Trip = stroke length. Installation distance measured between mounting pin centres at full extension. Specifications subject to change \u2014 contact our engineering team for updated datasheet.<\/p>\n<\/div>\n

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Crawler Crane Hydraulic Cylinder Series<\/h2>\n

The frame support cylinder is part of a complete hydraulic cylinder programme covering all major crawler crane functional circuits. Browse the full series below, including direct links to related cylinder types.<\/p>\n

\"Crawler<\/div>\n

\nRelated Product<\/span>
\nFront Frame Support Cylinder<\/span>
\nDesigned for the front crawler frame, engineered to the same 30 MPa working pressure standard as the HCYY11112020, ensuring matched hydraulic system compatibility.<\/span>
\n\uc81c\ud488 \ubcf4\uae30 \u2192<\/span>
\n<\/a>
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\nRelated Product<\/span>
\nRear Outrigger Rack Cylinder<\/span>
\nHandles the outrigger extension and lateral load-spreading function at the rear undercarriage, complementing the frame support cylinder in the crane’s full stability system.<\/span>
\n\uc81c\ud488 \ubcf4\uae30 \u2192<\/span>
\n<\/a><\/div>\n<\/div>\n

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Customer Success: Scottish Offshore Wind Construction<\/h2>\n

A heavy lift contractor operating in Scotland’s growing offshore wind sector came to us after repeated frame support cylinder failures on their Liebherr LR 1300 fleet during winter coastal site operations.<\/p>\n

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The Challenge<\/h3>\n

Their OEM replacement cylinders were sourced from a European distributor with 16-week lead times. When one of their four LR 1300 cranes had a frame support cylinder seize during a nacelle lift at a Moray Firth project site, the crane was grounded for 22 days while a replacement was sourced. At hire rates of \u00a318,000\/day, the cost overrun significantly impacted the project margin.<\/p>\n<\/div>\n

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Our Solution<\/h3>\n

We supplied two HCYY11112020 frame support cylinders as direct replacements, with expedited production in 18 working days. More significantly, we worked with the contractor’s hydraulic engineer to supply a third cylinder as a site spare \u2014 kept in a site-store heated container to preserve seal condition. The cylinders were supplied with upgraded cold-climate seal kits and corrosion-inhibiting rod wiper seals at no additional cost, acknowledging the coastal environment.<\/p>\n<\/div>\n

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The Outcome<\/h3>\n

Over the 14-month project duration, the three cylinders operated without a single unscheduled downtime event. The contractor extended their spare cylinder programme to cover their entire 6-crane Scottish fleet, ordering a further eight cylinders across three additional models. The site project manager reported that the revised hydraulic maintenance strategy was adopted as a company-wide standard for Scottish wind farm contracts.<\/p>\n<\/div>\n<\/div>\n

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What UK Crane Operators Say<\/h2>\n
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\u2605\u2605\u2605\u2605\u2605<\/div>\n

“We run a fleet of 300-tonne crawlers on a Thames Gateway infrastructure project. The frame support cylinders from Boom Cylinders have clocked over 2,000 operating hours without a single seal leak. For a safety-critical structural component, that reliability record is what decides our supplier choice.”<\/p>\n

James R., Plant Manager<\/span>
\nHeavy Lift Contractor \u00b7 Greater London<\/span><\/div>\n<\/div>\n
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\u2605\u2605\u2605\u2605\u2605<\/div>\n

“Our procurement team was sceptical about moving away from OEM parts for frame support cylinders. After twelve months running the HCYY11112020 on our Manitowoc 2250 in Yorkshire, we can say the quality is indistinguishable from OEM and the lead time is a fraction. The pre-sales technical support was genuinely knowledgeable.”<\/p>\n

Duncan H., Head of Engineering<\/span>
\nCrane Hire Services \u00b7 West Yorkshire<\/span><\/div>\n<\/div>\n
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\u2605\u2605\u2605\u2605\u2605<\/div>\n

“We needed a bespoke mounting flange adaptation for our non-standard crawler undercarriage configuration. The engineering team at Boom Cylinders produced dimensioned drawings within two days and had a modified cylinder ready in under four weeks. Custom capability at that speed is genuinely rare in this market.”<\/p>\n

Alastair M., Technical Director<\/span>
\nSpecialist Lifting Co. \u00b7 Aberdeen<\/span><\/div>\n<\/div>\n<\/div>\n<\/div>\n

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

\"Crawler<\/p>\n

Our manufacturing facility operates CNC deep-hole boring machines capable of processing cylinder barrels up to \u03a6500 mm bore diameter and 8,000 mm length in a single setup. The honing line maintains a measured Ra 0.4 \u00b5m surface finish across the full bore length, verified on a Mahr profilometer before the barrel proceeds to assembly. This infrastructure means we are not limited to catalogue specifications \u2014 if the standard HCYY11112020 does not match your crane’s mounting envelope or load requirement, our engineers can produce a dimensionally modified or pressure-uprated variant from the same base material and process.<\/p>\n

Customisation options regularly requested by UK heavy lift operators include: extended stroke variants for deep-reach frame configurations; alternative port positions to suit non-standard manifold routing; integrated position sensing grooves for magnetostrictive transducer fitment; and alternative surface protection (zinc-nickel plating, Geomet coating) for aggressive coastal environments. Our engineering team can issue a dimensioned general arrangement drawing and pressure simulation within 5 working days of receiving your crane model and cylinder interface dimensions.<\/p>\n

Get a Custom Cylinder Quote \u2192<\/a><\/div>\n<\/div>\n

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\uc790\uc8fc \ubb3b\ub294 \uc9c8\ubb38<\/h2>\n
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\nHow much does a crawler crane frame support cylinder cost from a UK supplier, and what affects the price?
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The cost of a crawler crane frame support cylinder supplied to UK buyers depends on the bore diameter, stroke length, working pressure rating, and whether custom mounting geometry is required. For the HCYY11112020 (\u03a6170\u00d7\u03a6150\u00d7800 mm, 30 MPa), pricing is competitive against OEM replacement costs. Contact our sales team at sales@boom-cylinders.com<\/a> for a specific quote including UK delivery and duty-inclusive pricing.<\/div>\n<\/details>\n<\/div>\n
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\nWhich crawler crane brands is the HCYY11112020 frame support cylinder compatible with for replacement in the UK market?
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The HCYY11112020 is widely used as a replacement for frame support cylinders on Liebherr LR series, Manitowoc MLC and 2250 series, Kobelco CKE and CK series, and Sany SCC series crawlers where the OEM cylinder falls within the \u03a6160\u2013180 bore range. Our engineering team will confirm compatibility when you provide the crane model, manufacturer, and existing cylinder measurements.<\/div>\n<\/details>\n<\/div>\n
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\nWhere can I find a reliable hydraulic cylinder supplier for crawler crane frame support applications based in or shipping to the UK?
\n+<\/span><\/summary>\n
Boom-Cylinders.com supplies crawler crane hydraulic cylinders \u2014 including frame support, boom, jib, and outrigger types \u2014 directly to UK buyers from our manufacturing base. We ship DDP (Delivered Duty Paid) to any UK mainland address, handle all import documentation, and can arrange pallet delivery to remote project sites including Scottish Highlands addresses through our logistics partners.<\/div>\n<\/details>\n<\/div>\n
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\nHow long does it take to get a replacement frame support cylinder delivered to a UK offshore wind farm construction site?
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For catalogue-specification cylinders like the HCYY11112020, our standard lead time is 15\u201320 working days from order confirmation to UK port arrival, with onward delivery adding 1\u20133 working days. Expedited production (12\u201315 working days) is available for site-critical situations. We strongly recommend that wind farm operators hold a site spare \u2014 our team can advise on minimum stock-holding for each crane type in your fleet.<\/div>\n<\/details>\n<\/div>\n
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\nWhat is the maximum withstand pressure of the frame support cylinder, and does it meet UK LOLER regulation requirements?
\n+<\/span><\/summary>\n
The HCYY11112020 carries a maximum withstand pressure of 40 MPa \u2014 a 33% safety margin over the 30 MPa working rating. Each cylinder is factory-tested at 1.5 \u00d7 working pressure before shipment. While the cylinders are manufactured to ISO 6020-2 \/ ISO 6022 standards and our quality documentation supports UK LOLER compliance requirements, operators should ensure the full crane lifting system, including the hydraulic circuit, is examined by a competent person as required under LOLER 1998.<\/div>\n<\/details>\n<\/div>\n
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\nWhen should a crawler crane frame support cylinder be replaced, and what are the warning signs that UK site managers should look for?
\n+<\/span><\/summary>\n
The main warning signs are: visible hydraulic oil weeping from the rod wiper seal; measurable rod retraction under sustained static load (drift); abnormal operating pressure spikes on the frame circuit gauge; or physical scoring on the chrome rod surface visible on inspection. UK LOLER thorough examination schedules should include a pressure test of the holding valve circuit at each 6-month or annual examination, as frame support cylinder drift can be a slow-developing failure mode.<\/div>\n<\/details>\n<\/div>\n<\/div>\n

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How much does a crawler crane frame support cylinder cost from a UK supplier?<\/p>\n

Contact sales@boom-cylinders.com for DDP-inclusive pricing for UK delivery.<\/div>\n<\/div>\n
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Where can I find a hydraulic cylinder supplier for crawler crane frame support shipping to the UK?<\/p>\n

Boom-Cylinders.com ships DDP to all UK mainland addresses with full import documentation.<\/div>\n<\/div>\n<\/div>\n

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Ready to Source Frame Support Cylinders for Your Crawler Fleet?<\/h3>\n

Send your crane model, cylinder dimensions, and quantity requirement to our engineering team for a same-week quotation.<\/p>\n

Get a Quote: sales@boom-cylinders.com<\/a><\/p>\n

Boom-Cylinders.com \u00b7 Specialist Hydraulic Cylinders for Crawler Cranes \u00b7 Serving the UK Heavy Lift Industry \u00b7 edit by gzl<\/p>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"

Crawler crane frame support cylinder HCYY11112020 \u2014 30MPa, \u03a6170\u00d7\u03a6150\u00d7800mm. UK supply, custom options. Get a quote from Boom-Cylinders.com.<\/p>","protected":false},"featured_media":1625,"comment_status":"open","ping_status":"closed","template":"","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":""},"product_brand":[],"product_cat":[1082],"product_tag":[],"class_list":["post-1624","product","type-product","status-publish","has-post-thumbnail","product_cat-cylinder-series-of-crawler-crane","first","instock","shipping-taxable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/boom-cylinders.com\/ko\/wp-json\/wp\/v2\/product\/1624","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/boom-cylinders.com\/ko\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/boom-cylinders.com\/ko\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/boom-cylinders.com\/ko\/wp-json\/wp\/v2\/comments?post=1624"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/boom-cylinders.com\/ko\/wp-json\/wp\/v2\/media\/1625"}],"wp:attachment":[{"href":"https:\/\/boom-cylinders.com\/ko\/wp-json\/wp\/v2\/media?parent=1624"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/boom-cylinders.com\/ko\/wp-json\/wp\/v2\/product_brand?post=1624"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/boom-cylinders.com\/ko\/wp-json\/wp\/v2\/product_cat?post=1624"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/boom-cylinders.com\/ko\/wp-json\/wp\/v2\/product_tag?post=1624"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}