HPR Series

Corrosion Resistance

The cylinder body is extruded from ASTM 6005 aluminum alloy (stainless steel cylinders are available based on customer application requirements, subject to final selection). The inner surface undergoes fine grinding and anodic oxidation to enhance corrosion resistance and extend service life.

Adjustable Torque

The modular pre-load spring cartridge allows for safe and convenient disassembly of the single-acting actuator. The torque output range can be adjusted by changing the number of springs.

Adjustable Opening

External independent stroke adjustment screws allow for convenient and precise ±4° adjustment in both directions, ensuring precise alignment between the actuator's fully open and fully closed positions with the corresponding valve positions.

Reliable Structure

The integrated gear-and-bearing design enhances operational safety. With nickel-plating treatment, the assembly offers improved fracture resistance and extended service life.

Fast Response Speed

The rack and pinion mechanism achieves transmission efficiency of over 90%, minimizing energy loss. The direct engagement of pneumatic drive with the gear mechanism enables rapid start-stop performance, making it ideal for high-speed cycling applications.

Universal Connection Standard

The multi-functional position indicator with NAMUR groove enables easy connection with a wide range of standard sensor components.

Angle of Rotation: 0 ~ 90°

Output Torque: Double-acting: 3 ~ 13,000 Nm, Single-acting: 5 ~ 4,200 Nm

Operating Pressure: 2 ~ 8 bar

Ambient Temperature: High-temperature range: -20 ~ +100°C, Standard temperature range: -20 ~ +80°C, Low-temperature range: -40 ~ +80°C, Ultra Low-temperature range: -60 ~ +40°C

Note：For the torque table, please refer to the 《HITORK Pneumatic Actuators Brochure(V4.0.3—202605--HK)》