Pneumatic actuators are actuators that operate with the piston and shaft mechanism.

Double acting pneumatic actuator

Double acting pneumatic actuators make opening and closing movements by providing air to two ports in front of the actuator.

Single acting pneumatic actuator

In single-acting pneumatic actuators, a port air is supplied and the opening and closing process is performed. The second movement is provided by the springs located between the cover and the piston from the other port. This saves air consumption.

From which parts are pneumatic actuators formed?

  • Shaft: Provides our basic movement.
  • Stofer: placed on the shaft.
  • Piston: Movement with the gear around the shaft
  • Body: The shaft, stofer and piston are placed in the body, then the caps are mounted on both sides of the pneumatic actuator.

4 Points to Consider in Pneumatic Actuators

  • The most important issue with pneumatic actuators is sealing elements. Because there is an air-operated system, a small wear in the sealing elements will cause air leakage of your pneumatic actuators.
  • Another important issue is the cushioning materials. The friction ratio in the piston body with the cushioning materials is minimized. In this way the drawing of the inner body is prevented. Failure to provide proper care in the event of wear of the cushioning material will cause the inner body to be drawn and air to escape. Likewise, if there is a deterioration or disintegration in the o-rings, it will lead to internal air leaks. This will prevent the actuator from operating efficiently.

  • Another important consideration is that the air you feed the pneumatic actuator is well conditioned and clean. Because if particles such as dust, dirt and particles enter the actuator with air, this will cause the pneumatic actuator’s sealing elements to be drawn and cause wear. As a result, the product will lose its performance in a much shorter time than life.

Read More: Ball Valve

  • Another important issue is that the valves that you connect underneath the pneumatic actuators are on the axis. What does this mean? If you install the valve as not under the pneumatic actuator’s axis, it will cause the pistons in this pneumatic actuator to rub against the body and your pneumatic actuator will wear out over time and air will escape. For this reason, when attaching a pneumatic actuator to a valve, you should pay attention to a good approximation.

TORK Pneumatic Actuator Features

TORK pneumatic actuators have the ability to open and close up to 2 minutes when ideal weather conditions are met. We have 32/2 pneumatic actuators with the smallest measurement. In other words, the internal dimension of the body is 32 mm pneumatic actuator. Our largest pneumatic actuator is a 350 pneumatic actuator. In pneumatic actuators we can reach maximum 560 N / m.

Read More: Benefits of Electric Actuator

Actuator Maintenance

Our recommendation is to replace internal parts (particular sealing elements and retention elements) depending on the density of your process. You can use your pneumatic actuators for many years after you have done good maintenance on the sealing and cushioning elements of the actuators and after using clean air.

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