{"id":1394,"date":"2026-09-08T03:22:35","date_gmt":"2026-09-08T03:22:35","guid":{"rendered":"https:\/\/boom-cylinders.com\/?post_type=product&p=1394"},"modified":"2026-09-08T06:45:04","modified_gmt":"2026-09-08T06:45:04","slug":"steering-cylinder-hcyy11112012","status":"publish","type":"product","link":"https:\/\/boom-cylinders.com\/vi\/product\/steering-cylinder-hcyy11112012\/","title":{"rendered":"Aerial Platform Steering Cylinder (320mm Stroke)"},"content":{"rendered":"
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Aerial Work Platform Hydraulics<\/div>\n

Aerial Platform Steering Cylinder (320mm Stroke)<\/span> \u2014 Precision Control for UK Aerial Work Platforms<\/h2>\n

Engineered for the demanding requirements of aerial work platforms operating across UK construction sites, utilities, and infrastructure projects, the HCYY11112012 steering cylinder delivers stable, responsive directional control at up to 21 MPa working pressure. With a 320mm stroke and a compact \u03a663\u00d7\u03a635 bore\/rod profile, this cylinder integrates directly into scissor lifts, boom lifts, and articulating platform systems where steering accuracy determines both productivity and on-site safety.<\/p>\n

Request a Quote \u2192<\/a><\/p>\n<\/div>\n<\/div>\n

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What Is the HCYY11112012 Aerial Platform Steering Cylinder?<\/h2>\n

\"HCYY11112012The HCYY11112012 is a double-acting hydraulic steering cylinder manufactured specifically for aerial work platform (AWP) vehicles. With a bore diameter of 63mm, a rod diameter of 35mm, and a working stroke of 320mm, it sits at the steering axle of mobile elevated work platforms (MEWPs), translating hydraulic pressure from the platform’s steering circuit into precise lateral wheel movement. Unlike general-purpose industrial cylinders, this unit has been dimensioned and pressure-rated to cope with the lateral load cycles, terrain shock, and continuous duty patterns typical of UK construction and industrial hire fleets operating on uneven ground.<\/p>\n

The cylinder’s 540mm installation distance matches the mounting geometry found in a broad range of mid-size boom lifts and scissor platforms, making it a well-fitting replacement or OEM-grade upgrade option for fleet operators, service workshops, and equipment hire companies sourcing parts across the United Kingdom.<\/p>\n<\/div>\n

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Technical Specifications<\/h2>\n
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Steering Cylinder \u2014 HCYY11112012<\/th>\n<\/tr>\n
Cylinder Model<\/th>\nTh\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt<\/th>\nWorking Pressure<\/th>\nMaximum Withstand Pressure<\/th>\nTrip (mm)<\/th>\nInstallation Distance (mm)<\/th>\nWeight<\/th>\n<\/tr>\n<\/thead>\n
HCYY11112012<\/td>\n\u03a663 \u00d7 \u03a635 \u00d7 320<\/td>\n21 MPa<\/td>\n32 MPa<\/td>\n320<\/td>\n540<\/td>\n13 kg<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
\"HCYY11112012<\/div>\n<\/div>\n
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Engineering Principles, Materials & Operating Scenarios<\/h2>\n
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Operating Principle<\/h3>\n

The HCYY11112012 is a double-acting cylinder: pressurised hydraulic fluid enters alternately through the cap-end and rod-end ports, driving the piston and rod in both directions. This bidirectional actuation allows the platform’s steering control valve to push the front axle wheels left or right with equal, metered force. The sealed piston divides the cylinder bore into two working chambers, each rated to withstand up to 32 MPa peak pressure without deformation or seal failure \u2014 a critical safety margin during emergency steering corrections on slopes.<\/p>\n<\/div>\n

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Material Construction<\/h3>\n

The cylinder barrel is produced from seamless cold-drawn steel tube, honed internally to Ra 0.4\u20130.8 \u00b5m to extend seal service life and reduce static friction. The piston rod is ground from 45# high-carbon steel, hard chrome plated to 0.03\u20130.05mm depth for corrosion resistance and surface hardness exceeding HRC 58. End caps, clevises, and mounting flanges are machined from ductile iron or structural steel forgings, with all threaded connections locking under vibration. Seals are polyurethane and PTFE composite, rated beyond 100\u00b0C continuous oil temperature \u2014 important in UK summer operating conditions where hydraulic systems can run warm.<\/p>\n<\/div>\n

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Typical Application Scenarios<\/h3>\n

This steering cylinder is suited to a wide range of aerial work platforms deployed across the United Kingdom, including 12m\u201326m articulating boom lifts used in bridge inspection and fa\u00e7ade maintenance, rough-terrain scissor lifts on construction sites in the North West and Midlands, and compact self-propelled MEWPs used in warehouse and events environments. Fleet hire operators maintaining mixed-brand MEWP fleets value it as a reliable cross-compatible replacement unit. Utilities firms working on power line and telecoms infrastructure rely on its steering precision when positioning platforms on embankments and cambers.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

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Product Advantages<\/h2>\n
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High Pressure Rating<\/div>\n

21 MPa continuous and 32 MPa burst tolerance provide a robust safety margin well above the operating pressures of most MEWP steering circuits, reducing the risk of seal extrusion or rod buckling during shock loads.<\/p>\n<\/div>\n

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Compact & Lightweight<\/div>\n

At only 13 kg and a 540mm centre-to-centre installation length, the HCYY11112012 does not compromise the platform’s overall machine weight or turning radius \u2014 a significant advantage for 3.5-tonne capacity boom lifts needing to meet UK road transport limits.<\/p>\n<\/div>\n

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Long Service Life<\/div>\n

Hard chrome rod plating combined with polyurethane wiper seals keeps contamination out of the seal stack even when operating in wet, muddy, or dusty site conditions common across UK outdoor worksites \u2014 dramatically extending intervals between reseals.<\/p>\n<\/div>\n

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Smooth Directional Control<\/div>\n

The honed bore and composite piston seal geometry minimise stick-slip at low flow rates, giving operators a smooth, predictable steering feel at low travel speeds \u2014 essential for precise platform positioning near fa\u00e7ades, overhead obstacles, and excavation edges.<\/p>\n<\/div>\n

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Customisation Available<\/div>\n

Port thread standards (BSP, ORFS, SAE), clevis dimensions, and surface treatment can all be modified to match specific platform OEM drawings. Our engineering team can supply a revised dimensional drawing within 48 hours of receiving your specification sheet.<\/p>\n<\/div>\n

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CE-Compliant Design<\/div>\n

The cylinder’s pressure rating and sealing arrangement are designed in line with EN ISO 3320 \/ BS EN 10305 tube standards, supporting CE machinery directive compliance \u2014 a practical necessity for any MEWP operating legally on UK worksites regulated under PUWER and LOLER.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

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Cylinder Series for Aerial Work Vehicles<\/h2>\n

The HCYY11112012 is part of a coordinated cylinder family covering all major hydraulic functions on aerial work platforms. Whether you need a replacement steering unit or a complete set of cylinders for a new-build or OEM project, the range covers lifting, levelling, and steering functions in matched specifications.<\/p>\n

\"Full<\/div>\n
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Related Product<\/div>\n
Long-Stroke Aerial Platform Lifting Cylinder (1260mm Stroke)<\/div>\n
HCYY11112006 \u2014 Designed for the primary lift function on boom and scissor platforms; 1260mm stroke for maximum working height reach.<\/div>\n
View Product \u2192<\/a><\/div>\n

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Related Product<\/div>\n
Aerial Work Platform Upper Leveling Cylinder (60mm Stroke)<\/div>\n
HCYY11112008 \u2014 Compensates for gradient changes across the platform upper boom arm to maintain a level working deck.<\/div>\n
View Product \u2192<\/a><\/div>\n

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Customer Success Story<\/h2>\n

Real-world results from the UK aerial platform sector<\/p>\n

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Case Study: Midlands Construction Plant Hire, Birmingham, UK<\/div>\n
MEWP Fleet Maintenance & Parts Sourcing \u2014 2025<\/div>\n

A Birmingham-based plant hire company operating a fleet of 38 articulating boom lifts across Midlands construction contracts had been experiencing recurring steering cylinder seal failures on eight of its machines \u2014 all mid-size 18m platforms from two different OEM brands. Replacement cylinders sourced through the OEM dealer network were on 10\u201314 week back-order, leaving the machines grounded and costing the company approximately \u00a31,200 per day in lost hire revenue per unit.<\/p>\n

After reviewing dimensional drawings with our UK sales desk, the company sourced 12 HCYY11112012 steering cylinders as a cross-compatible alternative. All units were shipped from our warehouse within 7 working days. The company’s workshop team fitted the cylinders without modification to the existing port connections or mount points. All eight machines were returned to hire within three weeks of the initial inquiry \u2014 reducing lost revenue exposure by an estimated \u00a368,000 compared to waiting for OEM back-order fulfillment.<\/p>\n

Twelve months on, none of the replacement cylinders have required resealing, and the company has placed a standing order for four spare units to be held on their own parts shelf.<\/p>\n<\/div>\n

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“We had four platforms on a time-sensitive road bridge inspection contract. The HCYY11112012 was the only steering cylinder we could get in under two weeks that matched our bore and stroke requirements. Fitted perfectly, no issues eight months in.”<\/p>\n

\u2014 Fleet Engineer, Infrastructure Services Company<\/div>\n
Leeds, West Yorkshire, UK<\/div>\n<\/div>\n
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“Price point is very competitive against the OEM option, and the cylinder quality honestly exceeded our expectations. Chrome rod finish, seal quality, the port threads \u2014 all exactly as specified. Will be our first call next time.”<\/p>\n

\u2014 Workshop Manager, Plant Hire Company<\/div>\n
Manchester, Greater Manchester, UK<\/div>\n<\/div>\n
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“Our maintenance team stripped the cylinder on arrival for a pre-fit inspection \u2014 everything was clean, properly honed, and the seals showed no signs of shelf deterioration. That attention to packaging and preservation tells you a lot about a supplier.”<\/p>\n

\u2014 Procurement Manager, Utilities Contractor<\/div>\n
Bristol, South West England, UK<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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Manufacturing Capability & Customisation<\/h2>\n

\"HCYY11112012<\/p>\n

Our hydraulic cylinder manufacturing facility operates CNC deep-hole boring, internal honing, hard chrome plating, and full pressure-cycle testing lines under one roof. Every HCYY11112012 unit passes a hydrostatic pressure test to 1.5 \u00d7 maximum working pressure before dispatch, with test certificates available on request. Dimensional inspection records and material traceability documentation are retained for five years per unit batch.<\/p>\n

Our product customisation service is a core part of what we offer UK B2B customers, not an afterthought. We work regularly with MEWP OEMs, hire fleet operators, and hydraulic system integrators who need steering cylinders built to their own engineering drawings \u2014 whether that means a modified stroke length, alternative port configuration (BSP G1\/2, SAE #8, ORFS -12), non-standard clevis pin diameter, or a specific corrosion protection coating such as zinc-nickel or Geomet for coastal or offshore site exposure. Our engineering team can quote against your DXF or PDF drawing, and we carry minimum order quantities suitable for smaller UK workshops and mid-size fleet operations.<\/p>\n

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Request a Custom Specification Cylinder<\/div>\n

Send your drawing, sketch, or dimensional list to our engineering team. We will confirm feasibility and provide a written quotation within 2 business days.<\/p>\n

Get a Quote \u2014 sales@boom-cylinders.com<\/a><\/p>\n<\/div>\n<\/div>\n

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HCYY11112012 vs. Generic Aftermarket Steering Cylinders<\/h2>\n
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Criteria<\/th>\nHCYY11112012<\/th>\nTypical Aftermarket<\/th>\n<\/tr>\n<\/thead>\n
Working Pressure<\/td>\n21 MPa<\/td>\n16\u201318 MPa typical<\/td>\n<\/tr>\n
Burst Pressure Rating<\/td>\n32 MPa<\/td>\nOften unspecified<\/td>\n<\/tr>\n
Rod Surface Treatment<\/td>\nHard chrome, 0.03\u20130.05mm<\/td>\nStandard chrome, variable<\/td>\n<\/tr>\n
Bore Finish<\/td>\nHoned Ra 0.4\u20130.8 \u00b5m<\/td>\nRa 1.6+ \u00b5m typical<\/td>\n<\/tr>\n
Pressure Test Certificate<\/td>\nAvailable on request<\/td>\nRarely provided<\/td>\n<\/tr>\n
Customisation<\/td>\nFull engineering support<\/td>\nStandard sizes only<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n
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C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/h2>\n

Structured for voice search and commercial buyer queries from the UK aerial work platform sector.<\/p>\n

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\nWhere can I find a reliable supplier of aerial platform steering cylinders in the UK that offers fast delivery and competitive pricing?<\/summary>\n
Boom Cylinders supplies the HCYY11112012 and related aerial platform cylinder series directly to UK buyers including plant hire operators, MEWP service workshops, and OEM purchasing departments. Orders are processed from stock where available, with standard delivery to UK mainland addresses within 7\u201310 working days. For volume quotes or time-critical sourcing needs, contact sales@boom-cylinders.com<\/a> directly and specify your required quantity and delivery timeline.<\/div>\n<\/details>\n<\/div>\n
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\nWhat is the working pressure and maximum withstand pressure of the HCYY11112012 steering cylinder used in aerial work platforms?<\/summary>\n
The HCYY11112012 has a continuous working pressure rating of 21 MPa and a maximum withstand (burst test) pressure of 32 MPa. Each unit is pressure-tested before dispatch. The 32 MPa ceiling provides a safety factor of approximately 1.5 \u00d7 working pressure, which is consistent with BS EN 13135 machinery hydraulic circuit design guidance for mobile elevating work platforms.<\/div>\n<\/details>\n<\/div>\n
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\nHow do I know if the HCYY11112012 aerial platform steering cylinder will fit my boom lift model without modification?<\/summary>\n
The primary dimensions to check are bore (63mm), rod (35mm), stroke (320mm), and centre-to-centre installation distance (540mm). If these match your existing cylinder’s dimensional plate or service manual data, the HCYY11112012 is a direct-fit candidate. Port thread type should also be confirmed. Send us your platform make, model, and serial number \u2014 or a photo of the existing cylinder data plate \u2014 and our engineering team will advise on fitment compatibility at no cost.<\/div>\n<\/details>\n<\/div>\n
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\nWhat is the typical lead time and cost for ordering a custom-specification aerial platform steering cylinder for a UK construction hire fleet?<\/summary>\n
Standard HCYY11112012 units held in stock ship within 7\u201310 working days to UK destinations. Custom-specification steering cylinders \u2014 modified stroke, alternative port type, or non-standard clevis \u2014 typically carry a 4\u20136 week production lead time from drawing approval, depending on order volume. Pricing depends on specification, quantity, and any surface treatment requirements. Request a formal quote at sales@boom-cylinders.com<\/a> with your drawing or dimensional requirements.<\/div>\n<\/details>\n<\/div>\n
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\nWhich UK industries most commonly use hydraulic steering cylinders of this specification on aerial work platforms?<\/summary>\n
The HCYY11112012 specification (\u03a663\u00d7\u03a635\u00d7320mm, 21 MPa) is most commonly used in plant hire and fleet maintenance, civil construction and groundworks, utilities and power infrastructure (overhead line work), building fa\u00e7ade maintenance and glazing, warehouse logistics operations, and events and stadium services across England, Scotland, and Wales. It is also specified by smaller MEWP manufacturers seeking a competitively priced, quality-assured steering cylinder for new builds.<\/div>\n<\/details>\n<\/div>\n
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\nWhen should I replace the steering cylinder on my aerial work platform, and what are the warning signs of seal wear or cylinder failure?<\/summary>\n
Common indicators that a steering cylinder requires attention include visible hydraulic oil seeping from the rod seal area, sluggish or uneven steering response at low engine speed, the platform drifting in steering position under load without operator input, and visual scoring or pitting on the chrome rod surface. Under LOLER and PUWER inspection regimes, these findings would typically trigger a remove-and-inspect recommendation. A cylinder that has been operating beyond its rated pressure \u2014 for example due to a faulty relief valve \u2014 should also be inspected regardless of visible symptoms.<\/div>\n<\/details>\n<\/div>\n<\/div>\n<\/div>\n
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Source the HCYY11112012 Steering Cylinder for Your UK Operation<\/div>\n

Contact our technical sales team with your platform model, required quantity, and delivery address. We respond within one business day.<\/p>\n

Get a Quote \u2014 sales@boom-cylinders.com<\/a><\/div>\n<\/div>\n<\/div>\n
ch\u1ec9nh s\u1eeda b\u1edfi gzl<\/div>","protected":false},"excerpt":{"rendered":"

Aerial Platform Steering Cylinder HCYY11112012 \u2014 \u03a663\u00d7\u03a635\u00d7320mm, 21MPa. UK B2B supplier. Fast delivery, custom specs, CE-compliant. Get a quote today.<\/p>","protected":false},"featured_media":1395,"comment_status":"open","ping_status":"closed","template":"","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":""},"product_brand":[],"product_cat":[1080],"product_tag":[],"class_list":["post-1394","product","type-product","status-publish","has-post-thumbnail","product_cat-cylinder-series-for-aerial-work-vehicle","first","instock","shipping-taxable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/boom-cylinders.com\/vi\/wp-json\/wp\/v2\/product\/1394","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/boom-cylinders.com\/vi\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/boom-cylinders.com\/vi\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/boom-cylinders.com\/vi\/wp-json\/wp\/v2\/comments?post=1394"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/boom-cylinders.com\/vi\/wp-json\/wp\/v2\/media\/1395"}],"wp:attachment":[{"href":"https:\/\/boom-cylinders.com\/vi\/wp-json\/wp\/v2\/media?parent=1394"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/boom-cylinders.com\/vi\/wp-json\/wp\/v2\/product_brand?post=1394"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/boom-cylinders.com\/vi\/wp-json\/wp\/v2\/product_cat?post=1394"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/boom-cylinders.com\/vi\/wp-json\/wp\/v2\/product_tag?post=1394"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}