120 Degree Pneumatic Actuator

Introduction

120° pneumatic actuator is a special double rack and pinion type pneumatic actuator with customized cylinder and piston, so that the actuator rotation stroke can reach 120° .

Working principle

Rack and Pinion Pneumatic Actuator comes available in types of double acting and single acting.

(1) Double Acting Pneumatic Actuator

When the pressure of the air source enters the middle chamber between the two pistons of the cylinder from the air port “2”, the two pistons are separated and moved to the two ends of the cylinder, and the air in the air chambers at both ends is discharged through the air port’’4’’. Then the racks of the two pistons simultaneously drive the output shaft to rotate counterclockwise.

Conversely, when the pressure of the air source enters the air chambers at both ends of the cylinder from the air port ‘’4’’, the two pistons are moved toward the middle of the cylinder. The air in the intermediate air chamber is discharged through the air port ‘’2’’. Then the two piston racks simultaneously drive the output shaft to rotate clockwise.

If the piston is installed in the opposite direction, the output shaft becomes reverse rotation.

(2) Single acting Pneumatic Actuator

When the pressure of the air source enters the middle chamber between the two pistons of the cylinder from the air port ‘’2’’, the two pistons are separated and moved toward the ends of the cylinder, forcing the springs at both ends to compress. The air in the air chambers at both ends is discharged through the air port ‘’4’’. The two piston racks synchronously drive the output shaft to rotate counterclockwise.

After the air source pressure is reversed by the solenoid valve, the two pistons of the cylinder move in the middle direction under the elastic force of the spring. The air in the middle chamber is discharged from the air port ‘’2’’, and the two piston racks simultaneously drive the output shaft to rotate clockwise.

If the piston is installed in the opposite direction, the output shaft will turn in reverse when the spring returns.

Feature:

1. The compressed aluminum cylinder body has superior anti-corrosion treatment inside and outside, which has a longer service life, high anti-corrosion resistance, and low friction coefficient.

2. The structure design of the double-piston rack and pinion is compact, the installation position is symmetrical, the service life is long, the movement is flexible and fast, and the position of the piston can also be simply exchanged to change the direction of motion.

3. There are two independent fine-tuning stroke positioning screws on the outside, which can adjust the positioning +/-5, so that the actuator can be in the same position as the valve when it is fully open and fully closed.

4. Versatility The parallel square and diagonal square output shafts, which are resistant to breakage and wear, can be conveniently and flexibly changed positions, which can reduce the transfer and preparation of materials, and are more economical.

5. All double-acting pneumatic actuators and single-acting pneumatic actuators (spring return) series models have the same appearance cylinder body and end cover, integrated product spare parts, which can be installed or removed on site by spring convert.

6. The multi-functional visual position indicator with NAMUR international standard groove is more convenient to install various sensor output accessories.

7. Composite material bearings and guide rings on the rack and piston, low friction coefficient, long life, can perform operations precisely, and prevent the output shaft from breaking.

8. A complete set of combined preload springs and anti-corrosion coating springs are suitable for various environmental occasions, safer and corrosion-resistant.

9. The high-precision tooth shape on the gear and the rack makes the meshing gap between the gear and the rack smaller and more accurate, and the output power is increased.

10. Nickel-plated bearing integrated guide design, anti-fracture, and improved safety and service life.

11. High-quality bearings, good sealing performance, low friction coefficient, long service life and wide operating temperature range.

12. Use anti-corrosion stainless steel screws to fix the end cover.

13. The whole series of products comply with the latest international standards ISO 5211, DIN3337 and VDE3845 and have good interchangeability and conform to NAMUR standards. It is convenient and simple to install electromagnetic pilot valves, limit switches and other accessories.

Specification data:

Air supply range	2.5 bars -8 bars, Max 10 bars
Torque	Max 4700Nm
Stroke	120 ° and customized angle
Working temperature	-40 ℃ to 150 ℃
Ambient temperature	-20°C to 90°C
Optional accessories	solenoid valve, positioners, limit switch, filter, regulator, lubricator, etc

FAQ:

1.    Q: Do you have any certification for 120° pneumatic actuator ?

A: Yes, it is certified by ISO 9001 and SIL Level 3.

2.    Q: Can I get one free sample to try in my market?

A: Yes, one set of free sample is dispatched by door-to-door courier.

3,  Q: Can you customize our design and logo for 120° pneumatic actuator ?

A: Yes, we can do ODM and OEM for all customers.

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