AC series pneumatic actuator is suitable for driving control of various rotary valves.Use a 2.5-8bar compressed air drive.Without lubrication design, the inner surface of cylinder and piston rack are hardened, and the service life of the cylinder is more than 1 million times.

AC series pneumatic actuator is a perfect new generation product integrating the latest technology, practical materials and precision machining technology in the world.The series pneumatic actuator is a double piston gear rack structure, double acting type and spring resetting type for the same cylinder body, with standard indicator and open position and closing adjustment device.In addition, the latest technology of arts and crafts makes our products modern, beautiful and compact.

structure

1. The indicator

Multi-function position indicator with NAMUR standard installation groove, easy to install various accessories, such as locators, limit switches and so on.

2. The output shaft

The high-precision one-piece gear output shaft is made of nickel-plated alloy steel and conforms to ISO5211, DIN3337 and NAMUR standard.It can be customized according to user's requirement, and has stainless steel material to choose.

3. The cylinder body

ASTM6005 extruded aluminum cylinder body according to different needs, can adopt hard oxidation, epoxy resin coating blue, PTFE coating or nickel plated for surface treatment.

4. End cover

Die-casting aluminum alloy end cover can be treated with polyester coating, metal powder coating, PTFE coating or nickel plating.

5. The piston

Double piston rack is made of cast aluminum hard oxidation or cast steel galvanizing treatment, the installation position is symmetrical, the action is quick, the service life is long, the simple reverse piston can change the direction of rotation.

6. Stroke adjustment

External two independent stroke adjustment screw can switch two directions which can adjust the convenient and accurate + 5 °.

7. High-performance spring

The combined preload spring adopts high quality material, coating treatment and prepress assembly.It has strong corrosion resistance and long service life.Can safely and simply remove the single acting actuator and meet different torque output ranges by changing the number of springs.

8. Bearing and guide plate.

Using low friction, long life composite material, avoid direct contact between metal and metal, maintenance is simpler and more convenient.

9. The seal

O - type sealing ring is used in the normal temperature with the rubber, in high temperature or low temperature with fluoro rubber or silicone rubber.

Under normal operating conditions, the recommended safety factor of the double-acting actuator is 15-20%, for example:

Valve torque =100Nm.

Safety moment =100x (1+20%) =120Nm.

Air pressure =5Bar.

Double acting actuator moment table, the minimum model of the double-acting actuator is: AC105DA(the output torque at 5Bar is 164.4Nm).

Single acting actuator type selection.

Valve needs torque =80Nm.

Safety moment =80x (1+30%) =104Nm.

Air pressure =5Bar.

For comparison of single action actuator moment table, we can find: AC140SRK7.

Output torque is

Air travel 0 ° = 318 nm

Air travel 90 ° = 257 nm

Spring 90 ° = 181 nm

Spring tour 0 ° = 120 nm

All output torque is greater than we need.

In the selection process of single-acting actuator, if we can understand the torque distribution of valve during opening, operation and closing, we can choose the actuator more economically and more reasonably.

Such as:

Valve needs torque =80Nm.

Safety moment =80x (1+30%) =104Nm.

When the valve is open, torque =104x30%=32Nm.

Air pressure =5Bar.

We can choose AC125SRK11.

Air travel 0 ° = 141 nm 104 nm >

Air travel 90 ° = 83 nm > 32 nm

Spring tour 90 ° = 173 nm > 32 nm

Spring tour 0 ° = 115 nm 104 nm >

The above data shows that the valve can be properly switched.