OEM DA/SR rack and pinion quarter-turn pneumatic rotary actuators
OEM DA/SR rack and pinion quarter-turn pneumatic rotary actuators
Pneumatic Actuator
Traditionally, pneumatic actuators provide higher speeds and lower forces when compared to electric actuators. However, a few factors, such as screw pitch/lead from an electric actuator, or the number of pistons in the pneumatic actuator, can affect the comparison.
For a pneumatic actuator, the force is calculated by multiplying the piston area (force factor) by the air pressure in the cylinder. For an electric actuator, the linear force is converted from the motor's torque.
It's difficult to maintain a set speed or force consistently when you're dealing with compressed air. Since voltage and current are easier to control, electric actuators can maintain force and speed much better even without closed-loop feedback. Ball screws or rack and pinion mechanisms on electric actuators also act as a gear reduction ratio, so forces can be increased with sacrifice to speed.
There are many options for electric actuators, so make sure you're comparing apples to apples. Even switching out a ball screw with another ball screw with a higher pitch/lead will alter the final specifications as you can see in the chart below.
The following chart depicts an example of force vs speed for linear actuators.
| Material | Extruded Aluminum alloy |
| Rotary Angle | 0~90 degree |
| Structure | rack and pinion rotary actuator |
| Working Pressure | 2~8bar |
| Surface Treatment | hard anodizing |
| Working Temperature | Normal Temperature: -20ºC(-4°F) ~ 80ºC (+176°F); High Temperature: -15ºC(+5°F) ~ 150ºC (+302°F); Low Temperature: -40ºC(-104°F) ~ 80ºC (+176°F). |
| Connection | NAMUR, ISO5211 and DIN3337 |
| Application | ball valve, butterfly valve, and rotary machine |
| Cup Color | grey, black, sky blue, dark blue, red, orange |
XM AT series Pneumatic Actuator is made of dual pistons driven by racks and pinions. There are two models. One is Dual Acting model, and the other is Spring Return model, which can suit various flammable, corrosive, dusty, strong magnetic field, radiation, vibration corrosive environment indoor or outdoor.
Auto-control in the field of electric power, petrochemical, metallurgy, petroleum, gas, town, construction, drainage, chemical industry, oil refining, mining, power plant, metallurgy, architecture, medicine, food, gas, scientific research, etc.
Main Features
-1). Our design, material and size are definitely accord with ISO9001:2008, CE Certificate and ATEX Certificate.
-2). Our piston is treated thermal quenching to obtain better strength and prolong using life.
-3). The surface of our actuator body is treated hard anoidizing to against rust and scratch.
-4). We provide with OEM service
-5). Strict quality control
-6). Better quality at a better price
-7). Excellent After-service.
-8). Fast delivery time
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.