90° to Partial-Turn Actuator Adaptation
Mechanical and control solutions for limited rotation applications
Mechanical Adjustment Methods
SMC's CQ2 series uses hardened steel limit screws on the cylinder body to physically restrict piston travel. Rotating the screws sets angles (30°, 45°, 60°) with nylon washers preventing metal-on-metal wear.
Parker's P1 series features repositionable internal stop pins via removable plates, allowing 15°-90° ranges. Advanced models use spring-loaded stops for tool-free adjustments.
Control System Integration
Festo's VT-VSPA2 converts 4-20 mA/0-10 V signals to air pressure. 10 mA corresponds to 45° position with ±0.5° accuracy via potentiometer feedback.
Bosch Rexroth's MPYE maintains partial turns with ±0.1° repeatability using inductive sensors and real-time air flow adjustment.
Application-Specific Adaptations
Water treatment plants use 60° settings on butterfly valves with cam mechanisms for non-linear flow regulation.
Robotiq's 3-Finger Gripper adjusts 10°-70° rotation with pressure regulators to control grasp force.
Performance Considerations
| Factor | Impact | Solution |
|---|---|---|
| Torque Variability | 15% increase at stroke start | Leverage compensation |
| Air Consumption | Reduced but needs stable pressure | Smaller volume tanks |
| Seal Wear | Uneven with frequent partial turns | Double-acting rack designs |
If you want to learn more about low-priced products, please visit the following website: www.xm-valveactuator.com
