What Is Rack & Pinion Pneumatic Actuator?

Rack & Pinion Pneumatic Actuator is powered by a clean air, driving the valve to open or close at 90 degrees. According to the structure, the pneumatic actuator can be divided into double-acting actuator and single-acting actuator. They work differently and have different advantages.

Double Acting actuator: Air supply on, air supply off. It opens and closes very quickly.
Single Acting actuator: Air supply on, air interrupt off. High safety performance.

Pneumatic actuators consist of pistons, pinions, seals, springs, and other components including Indicators, bearings & guide.

  • Pistons:

The twin rack pinions are made from die-casting aluminum treated with hard anodized or made from cast steel with galvanization. Symmetric mounting position, long cycle life and fast operation, reversing rotation by simply inverting the pistons.

  • Pinion:

The pinion is high-precision and integrative, made from nickelled-alloy steel, full conform to the lastest standards of ISO5211, DIN3337, NAMUR. The dimensions can be customized and the stainless steel is available.

  • Springs:

Preloaded coating springs are made from the high quality material for resistance to corrosion and longer service life, which can be demounted safety and conveniently to satisfy different requirements to torque by changing quantity of springs.

  • O-ring:

NBR for standard applications. Vition and PTFE seal for high and low temperature applications.

  • Bearings & Guides:

Made from low friction, long-life compound material, to avoid the direct contact between metals. The maintenance and replacement are easy and convenient.

  • Indicator:

Position indicator with NAMUR is convenient for mounting accessories such as limit switch box, positioner and so on.

If you have any pneumatic actuators needs, please do not hesitate to contact us!