Hydraulic Rotary Actuator – 2800N·m, 180° Rotation

⚙ Rack-and-Pinion Drive

Pressurised hydraulic fluid enters one port of the cylinder body, driving a precision-ground rack in linear translation. The rack meshes with a hardened pinion gear keyed directly to the output shaft, converting that linear stroke into a defined rotational sweep. Directing flow to the opposing port reverses shaft rotation. The geometry is self-contained — no external mechanical linkage needed — giving the unit its exceptionally compact torque-to-size ratio.

🔩 Construction Materials

The cylinder barrel and end caps are machined from high-tensile ductile iron or carbon steel depending on pressure rating, surface-hardened internally to resist wear from continuous cycling. The output shaft is forged alloy steel, precision-ground and case-hardened. All dynamic seals are NBR or FKM fluoroelastomer compounds, compatible with standard mineral hydraulic oils as well as fire-resistant HF fluids commonly required in UK steel, foundry, and offshore environments.

🏭 Typical Application Scenarios

This hydraulic rotary actuator handles pivot gates on automated packaging lines in the Midlands, slewing booms on agricultural telescopic handlers across East Anglia, gripper-arm rotation on injection moulding ejection systems, hatch-cover drives on UK coastal vessels, and tie-rod clamping on heavy press tooling. Its 180-degree envelope covers the vast majority of industrial pivot requirements without oversizing — keeping purchase cost, installation footprint, and operating pressure within practical engineering limits.

Extreme Torque Density

2800 N·m in a body smaller than most motors of equivalent output. Machine designers recover significant envelope space versus gearmotor + gearbox combinations.

Low Starting Pressure

A maximum starting pressure of 3.1 MPa enables smooth motion initiation with minimal jerk — critical for clamping cycles where positional repeatability and load control matter.

High Cantilever Capability

A cantilever bending tolerance of 7100 N·m — and 16900 N·m in cross-over mounting — means the output shaft handles substantial overhanging load without supplementary bearings in many installations.

Dual-Direction Load Rating

2300 kg radial and 1800 kg axial load capacity covers combined loading conditions common in robotic tool pivots, agricultural hitch systems, and marine crane slewing rings.

Drop-In System Integration

Standard SAE port sizes and bolt-pattern dimensioning ensure compatibility with existing hydraulic power units without special manifolding. Retrofit or OEM integration is straightforward.

Corrosion-Resistant Finish

Epoxy-primer and polyurethane topcoat standard, with zinc-phosphate pre-treatment. Salt-spray tested to over 500 hours — a prerequisite for UK coastal, offshore, and washdown environments.

Wind Power Hydraulic Cylinder

100mm bore, 80mm stroke. Engineered for pitch and yaw control systems in wind turbine nacelles, capable of operating in extreme temperature ranges and continuous duty cycles without performance degradation.

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Towing & Lifting Cylinder

Double-acting, 40mm bore, 348mm stroke. Suited for tow hitch elevation, trailer coupling arms, and light lifting mechanisms on agricultural and recovery vehicles throughout the UK.

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“We’ve sourced hydraulic rotary actuators from three different suppliers over the years. The torque consistency on these units is noticeably better — we measured less than 2% variance across a 500-cycle test. Lead time from order to delivery at our Sheffield facility was 11 working days.”

“We run three of these on a baling line in our East Anglian facility. Crop moisture in autumn creates real problems for lesser actuators — these have handled it without complaint for two full harvest seasons. The 180-degree rotation maps exactly to our conveyor gate geometry. No mods needed.”

“Quoted a custom shaft keyway spec — they came back with a detailed drawing within 48 hours and the modified units shipped within three weeks. The bending torque ratings gave us the confidence to eliminate a support bearing from our design. A genuinely well-built product at a competitive price point.”

What is the price of a 2800 N·m hydraulic rotary actuator supplied to the UK, and how quickly can you quote?

Pricing varies based on configuration, seal material, surface finish, and quantity. For standard units in single figures, we typically respond with a CIF or EXW quote within one to two working days of receiving your enquiry. UK importers can expect DDP pricing to be available on request. Send your specification or application details to [email protected] and our team will respond promptly.

How do I choose between a hydraulic rotary actuator and a hydraulic linear cylinder with a crank arm for my UK press tooling application?

A rotary actuator is generally the better choice where space is constrained, where the rotation angle is fixed (such as 90° or 180°), and where mechanical complexity must be kept low for maintenance purposes. A crank-and-cylinder arrangement can offer variable geometry and sometimes higher stroke adjustment flexibility, but introduces additional pivot pins, clevis joints, and the nonlinearity of crank geometry. For most UK press clamping and gate pivoting applications with a defined angular sweep, the rotary actuator route delivers better repeatability and lower long-term maintenance cost.

Where can I find a reliable hydraulic rotary actuator supplier in the UK who offers custom shaft and port configurations?

We supply hydraulic rotary actuators directly to UK engineering businesses and OEMs from our manufacturing base, with standard units typically available on a two-to-four week delivery schedule. Custom shaft dimensions, non-standard rotation angles, and bespoke flange patterns dimensioned to BS/DIN standards are all within our engineering scope. Enquiries can be directed to our applications team at [email protected]. We work with customers in sectors including offshore, marine, agricultural machinery, steel processing, and automated production equipment.

What hydraulic fluid types are compatible with this 21 MPa rotary actuator, and will it work with fire-resistant HF fluids used on UK offshore platforms?

Standard units ship with NBR seals, compatible with mineral hydraulic oil (ISO VG 46 or VG 68 typically). For HF-C phosphate ester fluids or HF-D synthetic esters commonly mandated on North Sea platforms, we specify FKM fluoroelastomer seal kits. HETG (vegetable-based ester) fluids for environmentally sensitive UK applications are also compatible with FKM variants. Please state your fluid type at the time of enquiry so the correct seal pack is confirmed before production.

When should I consider cross-over installation versus cantilever installation for a hydraulic rotary actuator in a heavy industrial setting?

Cross-over (or through-shaft) installation — where the shaft is supported on both sides of the actuator body — achieves the maximum bending torque rating of 16900 N·m, making it the correct choice for heavy pivot arms, boom pivots, and high-mass rotating components. Cantilever installation (single-sided shaft support) is acceptable where the 7100 N·m bending limit is not exceeded, which covers the majority of lighter clamping, gate, and gripper applications. If your loading conditions approach or exceed the cantilever limit, either switch to cross-over mounting or add a supplementary bearing housing on the free shaft end.

How long does it take to get a sample or initial order of hydraulic rotary actuators shipped to a UK address, and what is the cost of freight?

Standard production lead time is typically 15–25 working days from order confirmation. Air freight to major UK hubs (Heathrow, East Midlands, Manchester) takes approximately five to seven business days. Sea freight is typically 25–30 days to Felixstowe or Southampton but is more economical for larger orders. We provide DDP Incoterms pricing options covering UK import duty and VAT deferment arrangements where applicable. Contact us at [email protected] for a full landed-cost breakdown for your location.