Ledex / Johnson Electric BTA Brushless Torque Actuators
Ledex / Johnson Electric BTA Brushless Torque Actuators offer high-speed controllability in rotary stroke applications. Ledex / Johnson Electric BTA has a single-phase coil with three stator poles and a matching rotor pole. When the coil is energized, the poles align along the flux path, and the three-pole design allows a stroke of up to 45°. Since BTA technology does not require full stroke actuation, stops can be used to attain maximum life and optimum stroke/torque capacity.
The series uses simple pulse width modulation to control coil current, allowing for open or closed loop velocity and maximum position control. The platform offers quiet operation due to the soft, shock-free cycling which eliminates the noise associated with end-of stroke mechanical stops. BTA features very quiet operation, long life in excess of 100 million actuations, and high power density, making the series ideal for high speed, high throughput diverting and sorting applications that require low noise and zero downtime.
Features
- True rotary motion, no axial travel
- High speed (as low as 8ms)
- 100 million+ life cycles
- Permanent lubrication
- Low shock actuation
- 45° stroke (standard – CW/CCW)
- Spring return
- Dual bearing system
- Simple mounting interface
- Five sizes (1-3/16” to 2-5/16” OD)
- Various voltage inputs
- -55°C to +80°C ambient temperature
Applications
- Conveyor sorting
- Mail/parcel sorting
- Medical diagnostic devices
- Camera/laser shutters
- Tilt tray sorting
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Published: 2019-07-12
| Updated: 2023-10-16