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StG 3

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  • Replaces "F" Series Woodward
  • Completely maintenance free
  • Max. Torque 3 Nm 72 Degree Range


Small and medium-sized diesel engines as well as gas engines or turbines are the preferential application for this powerful actuator.

A multiple magnetized permanent magnet is facing a multipolar armature radial. That kind of design allows generating powerful torque in both directions of rotation. Besides that it achieves the least possible axial bearing loads.

The armature is optimized for lowest heat build-up. Additionally, the design enhances heat transfer and allows a wide working temperature range.

Result of the direct acting fearless function is a very fast response time. Optionally a return spring can be mounted on the output shaft to ensure setting to a zero position in case of voltage loss.

A high precision contactless feedback system supplies an electrical analogue signal of shaft position to any external control device.

Application of special materials and long-duration lubricants assure maintenance-free operating and long service life. Mounting of the actuator is possible in any fitting position. The robust and enduring design with IP6K9K degree of protection allows operation under roughest ambient conditions.




Actuating angle 72°
Maximum torque 3 Nm
Torque in steady state 1.5 Nm
No load response time
(depending on controller)
< 50 ms
Motor operating voltage range 10 … 32 V
Current Consumption max. 6 A
Steady state current approx. 3.5 A
Power supply position sensor 4.5 … 5.5 VDC
Position feedback (0 ... 100%) 0.5 … 4.5 V
Degree of protection IP6K9K
Weight approx. 5 kg
Ambient temperature -40 ... 125°C
Permissible ambient humidity < 95 % at 55°C
Permissible vibration level ±1 mm at 1 … 20 Hz,
max. 0.24 m/s at 21 … 63 Hz,
max. 9 g at 64 … 2000 Hz
Shock 30g, 11ms, half sine
Connector AMPSEAL 16 (6 pin)