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Lightweight brushless DC servomotor

05 May 2015

FAULHABER has introduced the series 3274 BP4 brushless DC servomotor which is said to be suited to use in applications where high power and dynamic start/stop operation with low weight is important, for example in link drives of humanoid robots, electric grippers for process automation or traction drives used in inspection robotics. 

The new four-pole brushless DC servomotor measures 32 mm in diameter and 74 mm in length, with a continuous torque of 165 mNm. It weighs just under 320 g, which is half that of conventional motors with comparable power. 

The 3274 BP4 is overload-resistant and operates without mechanical commutation. As a result, its operational lifetime is should be longer than that of a conventional DC micromotor. 

An interesting feature of this motor series is the high flexibility in its design. The 3274 BP4 is equipped as standard with digital hall sensors. High-resolution optical and magnetic encoders can be attached simply to the rear multifunction flange. As an option, the motor is also available with analogue hall sensors which can replace an encoder in many application cases. 

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