{"id":1687,"date":"2026-09-10T02:26:33","date_gmt":"2026-09-10T02:26:33","guid":{"rendered":"https:\/\/boom-cylinders.com\/?post_type=product&p=1687"},"modified":"2026-09-10T02:26:34","modified_gmt":"2026-09-10T02:26:34","slug":"wind-turbine-hydraulic-pitch-cylinder","status":"publish","type":"product","link":"https:\/\/boom-cylinders.com\/vi\/product\/wind-turbine-hydraulic-pitch-cylinder\/","title":{"rendered":"Wind Turbine Hydraulic Pitch Cylinder"},"content":{"rendered":"
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Wind Energy Hydraulic Solutions \u00b7 United Kingdom<\/p>\n

Wind Turbine Hydraulic Pitch Cylinder<\/h2>\n

Precision-engineered hydraulic pitch cylinders purpose-built for wind energy systems. Trusted by turbine OEMs and maintenance contractors across Great Britain for consistent blade angle control, high-pressure reliability, and extended service life in offshore and onshore applications.<\/p>\n

Get a Quote<\/a>
\nContact Engineer<\/a><\/div>\n<\/div>\n

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\"Wind<\/div>\n<\/div>\n

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What Is a Wind Turbine Hydraulic Pitch Cylinder?<\/h2>\n

A wind turbine hydraulic pitch cylinder is a double-acting hydraulic actuator that governs the angular position of each turbine blade relative to the incoming wind. By precisely extending or retracting under controlled hydraulic pressure, the cylinder allows the turbine controller to optimise aerodynamic efficiency during partial-load operation, and to feather blades safely during storm conditions or emergency shutdown sequences. Unlike electric pitch systems, hydraulic pitch cylinders deliver superior force output at compact size \u2014 a decisive advantage in nacelle-constrained hub designs common across the UK’s growing offshore wind sector.<\/p>\n

Our HCYY11112028 wind power series cylinder is engineered to IEC 61400 turbine standards and validated against the wet, salt-laden operating environments typical of North Sea and Irish Sea installations. The cylinder body, piston rod, and pin interfaces are manufactured from alloy steels with surface treatments tailored for corrosion resistance, fatigue life, and the cyclic loading profiles inherent to blade pitch actuation \u2014 which can exceed one million full-stroke cycles across a 20-year asset life.<\/p>\n<\/div>\n

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Technical Specification<\/h2>\n

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\"Wind<\/div>\n

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\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Tham s\u1ed1<\/th>\nValue<\/th>\n<\/tr>\n<\/thead>\n
Cylinder Mode<\/td>\nHCYY11112028<\/td>\n<\/tr>\n
Working Pressure<\/td>\n16 MPa<\/td>\n<\/tr>\n
Maximum Withstand Pressure<\/td>\n25 MPa<\/td>\n<\/tr>\n
Diameter of Cylinder Tube<\/td>\n100 mm<\/td>\n<\/tr>\n
Piston Rod Diameter<\/td>\n50 mm<\/td>\n<\/tr>\n
Pin Diameter<\/td>\n150 mm<\/td>\n<\/tr>\n
Trip (Stroke)<\/td>\n80 mm<\/td>\n<\/tr>\n
Cylinder Length<\/td>\n855 mm<\/td>\n<\/tr>\n
Weight<\/td>\n140 kg<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

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How It Works \u2014 Principle, Materials & Application Scenarios<\/h2>\n
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Operating Principle<\/p>\n

Hydraulic oil is directed to either the cap-end or rod-end port of the cylinder by a servo-proportional valve under the command of the turbine’s pitch controller. The resulting differential pressure across the piston moves the rod to extend or retract, rotating the blade via its bearing ring through the defined 80 mm stroke. Closed-loop position feedback \u2014 typically via a linear transducer mounted alongside the cylinder \u2014 allows the controller to achieve angular resolution of less than 0.1 degrees, keeping rotor speed and power output precisely regulated across the full wind-speed envelope from cut-in to rated output.<\/p>\n<\/div>\n

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Materials & Surface Treatment<\/p>\n

The cylinder barrel is machined from seamless honed steel tube (ST52 \/ DIN 2391), providing a smooth internal bore finish to Ra 0.4 or better for minimal seal wear. The piston rod is manufactured from 45# alloy steel, hard chrome plated to a minimum depth of 25 microns, then precision ground and polished. This combination delivers a surface hardness exceeding 850 HV alongside outstanding corrosion resistance \u2014 essential for hub interiors exposed to salt mist in offshore wind environments across the UK coast. End caps and clevis mounts are forged steel, heat treated for impact toughness in the sub-zero temperatures common during winter operations in Scotland, northern England, and offshore fields in the North Sea.<\/p>\n<\/div>\n

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Application Scenarios<\/p>\n

Designed specifically for the blade pitch systems of multi-megawatt horizontal-axis wind turbines (HAWT), these cylinders are equally suited to onshore wind farms across Wales, Scotland, and Yorkshire, and to offshore structures in the North Sea and Celtic Sea. Beyond new-build projects, they are widely specified as replacement parts during major maintenance overhauls on Vestas, Siemens Gamesa, and GE turbine platforms, where original cylinder life has been exhausted and a certified drop-in replacement with equivalent geometric and performance parameters is required by the site operator.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

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Why Engineers Specify Our Pitch Cylinder<\/h2>\n
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25 MPa<\/p>\n

Safety Pressure Margin<\/p>\n

Rated working pressure of 16 MPa with a tested burst margin of 25 MPa \u2014 a 56% safety factor that protects against hydraulic spikes during emergency feathering events.<\/p>\n<\/div>\n

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Chrome-Plated Rod<\/p>\n

Corrosion Resistance<\/p>\n

Hard chrome plating to ISO 6158 on the 50 mm piston rod delivers proven performance in salt spray environments \u2014 validated to 480 hours neutral salt spray testing.<\/p>\n<\/div>\n

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1M+ Cycles<\/p>\n

Fatigue-Rated Design<\/p>\n

Designed and validated for over one million full-stroke cycles without seal replacement \u2014 dramatically reducing turbine downtime and unscheduled maintenance costs across a 20-year asset life.<\/p>\n<\/div>\n

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Drop-In Fit<\/p>\n

OEM-Compatible Geometry<\/p>\n

Overall cylinder length of 855 mm and 150 mm pin diameter match common pitch-bearing hub geometries, simplifying swap-out maintenance on established turbine platforms without hub re-engineering.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

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Related Hydraulic Cylinder Products<\/h2>\n

Our engineering team supplies a broad portfolio of hydraulic cylinders for lifting, support, and drive applications across the construction, energy, and agricultural sectors in the UK and internationally. Two products frequently specified alongside the wind pitch series include the Crawler Crane Lift Cylinder<\/a>, designed for high-capacity crawler crane boom and jib actuation in heavy civil construction, and the Rear Frame Support Cylinder<\/a>, widely used in articulated frame-steer machines including telescopic handlers and rough-terrain cranes \u2014 both of which share the same quality standards and surface treatment specifications as the wind power series.<\/p>\n

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Crawler Crane Lift Cylinder<\/a><\/p>\n

High-pressure lifting cylinders for crawler crane boom systems. Engineered for maximum duty cycles in infrastructure and civil construction projects.<\/p>\n

View Product \u2192<\/a><\/p>\n<\/div>\n

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Rear Frame Support Cylinder<\/a><\/p>\n

Robust frame-support cylinders for articulated machines and rough-terrain equipment. Long service life under oscillating lateral loads.<\/p>\n

View Product \u2192<\/a><\/p>\n<\/div>\n<\/div>\n<\/div>\n

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

Our manufacturing facility operates a 28,000 m\u00b2 production footprint equipped with CNC deep-hole boring and honing lines, automated hard chrome plating bays, and a fully equipped hydraulic test bench capable of proof-testing cylinders to 1.5 times rated pressure. Every cylinder exits the production line with a full inspection record covering dimensional check, pressure test certificate, and surface treatment verification \u2014 documentation that satisfies the quality requirements of UK wind energy operators and their insurance surveyors.<\/p>\n

Custom engineering is a core competency. Our applications team works directly with OEM design engineers to develop pitch cylinder variants with modified stroke lengths, alternative port orientations, non-standard mounting configurations, or modified seal packages suited to alternative hydraulic fluids including fire-resistant fluids (HFA, HFB, HFC) used on specific offshore platforms. Custom drawing review, 3D model interchange (STEP\/IGES), and prototype lead times of 8\u201312 weeks are standard. For wind energy projects in the UK and Europe, we maintain a dedicated account management structure with engineers fluent in IEC 61400 documentation requirements.<\/p>\n

Get a Custom Quote \u2192 sales@boom-cylinders.com<\/a><\/div>\n<\/div>\n

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Customer Success \u2014 Real Projects, Real Results<\/h2>\n

Representative cases drawn from our wind energy cylinder supply programme.<\/p>\n

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Case Study \u2014 Offshore Wind, Scotland<\/p>\n

North Sea Offshore Wind Farm Maintenance Programme \u2014 Aberdeen, Scotland<\/p>\n

A Scottish-based offshore wind operations and maintenance (O&M) contractor responsible for a 120-turbine North Sea array was encountering premature pitch cylinder failures on a fleet of 2.5 MW turbines installed in 2011. The original cylinders were exhibiting chrome spalling and seal extrusion at roughly 60% of their designed service life \u2014 likely due to higher-than-specification hydraulic pressure transients. After evaluating three potential replacement suppliers, the contractor selected our HCYY-series cylinders based on the 25 MPa pressure tolerance, seal package compatibility with their existing VG46 hydraulic oil, and the availability of full material traceability certificates required by their offshore insurance underwriters. A batch of 36 replacement cylinders was delivered to Aberdeen in 11 weeks from order confirmation. After 18 months in service, no cylinder-related pitch failures had been recorded across the affected turbines.<\/p>\n

Offshore Wind \u00b7 Scotland<\/span>
\n36 Units Supplied<\/span>
\n11-Week Lead Time<\/span>
\nZero Failures at 18 Months<\/span><\/div>\n<\/div>\n

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“The cylinder dimensions matched our hub geometry exactly. We swapped all three blades on a Siemens platform in one 6-hour weather window \u2014 no grinding, no shimming. Documentation package was complete and accepted by our certifier without revision.”<\/p>\n

James R., O&M Lead<\/p>\n

Offshore Wind Contractor \u00b7 Aberdeen, Scotland<\/p>\n<\/div>\n

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“We quoted three UK hydraulic suppliers and two European ones before approaching Boom Cylinders. The price per unit was 22% lower, lead time was the fastest, and the technical data sheet covered everything our procurement team needed. Reordered twice since.”<\/p>\n

Sarah M., Procurement Manager<\/p>\n

Renewable Energy Developer \u00b7 Yorkshire, England<\/p>\n<\/div>\n

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“Custom stroke modification required. The engineering team turned around revised drawings in four days and delivered 12 prototype units inside 10 weeks. Seal life on the modified design has exceeded our internal benchmark in 9-month accelerated testing.”<\/p>\n

Dr. Peter L., Design Engineer<\/p>\n

Turbine OEM R&D \u00b7 Bristol, England<\/p>\n<\/div>\n<\/div>\n<\/div>\n

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C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/h2>\n
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Where can I buy a hydraulic pitch cylinder for a wind turbine in the UK, and how quickly can I get a price?<\/p>\n

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You can request a quote directly by emailing sales@boom-cylinders.com<\/a>. Our sales engineers typically respond with a formal quote within 24 business hours for standard wind pitch cylinder specifications. For bespoke or modified cylinder requirements, a budgetary price and feasibility response is normally provided within 48 hours. UK delivery from our bonded warehouse stock or ex-factory dispatch covers the whole of Great Britain including mainland Scotland and offshore helicopter freight to North Sea platforms.<\/p>\n<\/div>\n<\/div>\n

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What is the typical lead time and cost for a custom wind turbine pitch cylinder supplied to an offshore wind project in Scotland or the North Sea?<\/p>\n

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Standard HCYY11112028 pitch cylinders held in production-ready status carry a lead time of 8\u201312 weeks from order confirmation for custom specifications, or shorter for quantities available ex-stock. Pricing depends on order volume, customisation level, and required quality documentation (material certs, pressure test reports, third-party inspection). Offshore projects frequently require Bureau Veritas or Lloyd’s Register witnessing of factory acceptance testing \u2014 we accommodate this routinely. Contact our team for a project-specific quotation including freight and packaging for offshore logistics.<\/p>\n<\/div>\n<\/div>\n

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How do I know which hydraulic pitch cylinder is compatible with my existing Vestas or Siemens Gamesa turbine platform?<\/p>\n

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Our engineering team can carry out a dimensional and performance cross-reference if you provide: the original OEM part number (if known), pin diameter, overall cylinder length, bore and rod dimensions, working pressure rating, and the port thread type and orientation. A STEP 3D model of the existing hub interface geometry is also helpful but not essential. Send your details to sales@boom-cylinders.com<\/a> and we will confirm compatibility or recommend the correct variant within two working days.<\/p>\n<\/div>\n<\/div>\n

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What quality certifications and test documentation are available for hydraulic pitch cylinders supplied to UK wind energy operators?<\/p>\n

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Every cylinder is supplied with a factory test certificate confirming proof pressure testing to 1.5 x working pressure, a dimensional inspection report, and a material test certificate (MTC) in accordance with EN 10204 3.1 for cylinder tube and piston rod. ISO 9001:2015 certification covers our quality management system. Optional third-party witnessed testing by Bureau Veritas, TUV, or Lloyd’s Register can be arranged for orders requiring certification body involvement. Specific documentation requirements for DNV GL, BVQI, or UKCA compliance can be discussed with our quality team prior to order placement.<\/p>\n<\/div>\n<\/div>\n

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When should a wind turbine pitch cylinder be replaced, and what are the signs of cylinder failure in onshore UK wind farms?<\/p>\n

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Common indicators of pitch cylinder degradation include visible hydraulic oil weeping from the rod seal area, erratic blade angle positioning logged by the SCADA system, increased hydraulic pump duty cycle (suggesting internal leakage past the piston seal), and physical chrome damage or pitting on the rod surface. Planned replacement is typically carried out during major overhauls at 8\u201312 year intervals, or proactively when cylinder age exceeds 15 years on high-cycle turbines in windy sites such as those across the Scottish Highlands, Welsh uplands, or coastal Yorkshire. We can advise on condition-based vs. scheduled replacement strategies based on your fleet’s operational data.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

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Ready to Source Wind Turbine Hydraulic Pitch Cylinders?<\/p>\n

Contact our UK-focused hydraulic engineering team for specifications, pricing, and custom cylinder solutions.<\/p>\n

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

Boom Cylinders \u00b7 Wind Power Hydraulic Series \u00b7 Supplied to the UK Wind Energy Sector<\/p>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"

Wind turbine hydraulic pitch cylinder HCYY11112028 \u2014 16MPa rated, 25MPa tested. Supplied to UK onshore and offshore wind farms. Custom specs available. Get a quote.<\/p>","protected":false},"featured_media":1688,"comment_status":"open","ping_status":"closed","template":"","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":""},"product_brand":[],"product_cat":[1083,1084],"product_tag":[],"class_list":["post-1687","product","type-product","status-publish","has-post-thumbnail","product_cat-forklift-cylinder-series","product_cat-other-cylinders","first","instock","shipping-taxable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/boom-cylinders.com\/vi\/wp-json\/wp\/v2\/product\/1687","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=1687"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/boom-cylinders.com\/vi\/wp-json\/wp\/v2\/media\/1688"}],"wp:attachment":[{"href":"https:\/\/boom-cylinders.com\/vi\/wp-json\/wp\/v2\/media?parent=1687"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/boom-cylinders.com\/vi\/wp-json\/wp\/v2\/product_brand?post=1687"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/boom-cylinders.com\/vi\/wp-json\/wp\/v2\/product_cat?post=1687"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/boom-cylinders.com\/vi\/wp-json\/wp\/v2\/product_tag?post=1687"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}