The AMG type SAD/SAF pneumatic actuator is characterized by the basic design element of a gear rack. In this case, the rotational motion is generated by the linear movement of two interacting pistons. The piston racks engage with a pinion, which transmits the rotational motion to the armature. The piston movement is influenced by compressed air acting on the piston surfaces.
The lateral forces generated during the piston sliding motion are absorbed by guide rods. This ensures perfect axial guidance of the pistons, allowing the piston seals to function properly and permanently.
According to the rack and pinion principle, a uniform torque process is generated during switching due to the constant effective distance between the rack and the pinion.
For the AMG pneumatic actuator of type SAD, the movement is generated by compressed air. When the outer chamber is vented, the switch shaft rotates clockwise (valve closed). When the inner chamber is vented, the switch shaft rotates counterclockwise (valve open).
The AMG pneumatic actuator of type SAD moves under the influence of compressed air and spring force. For single-acting actuators, only the inner chamber is pressurized with compressed air. The resulting force not only moves the valve in one direction but also tensions the safety spring during the return stroke. In the event of a failure, the spring force is capable of moving the valve to the safe position "CLOSE" or "OPEN".


Technical Specifications:

Design: Pneumatic double-piston quarter-turn actuator
Design Features: Rack and pinion principle, piston guide with guide rods
BR03C: Diagonal internal square for 45° position; stainless steel 1.4532 BR16 spacer ring: Centering via plug-in centering ring; in sizes 10 - 42, an additional flange pattern according to DIN EN ISO 5211 has been introduced; mounting threads for travel limit modules are directly integrated into the actuator housing
Rotation Angle: 0° - 90°
Control Pressure: Minimum 2 bar; Maximum 10 bar
Control Medium: Filtered, dry compressed air or all non-corrosive gaseous media
Ambient Temperature: -25°C to +80°C / Optional: -60°C to +100°C
Mounting Position: Any
Corrosion Resistance: Industrial atmosphere
Lubrication: Permanently lubricated with grease DIN 51825-K2K-30
Torque: Refer to torque table
Option BR03C: Adjustable internal/external travel stop, up to +/- 5°, via travel stop module, with independent travel stop module featuring extended rotation angle;
Ambient temperature up to +100°C;
Ambient temperature as low as -40°C