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Powerful Brushless DC Servo Motor from MICROMO

Featured Product from FAULHABER MICROMO

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In the fight for high performance with minimum weight, the 3274 BP4 is the new champion in the ring. The 3274 BP4 is a small brushless DC motor from FAULHABER, measuring 32 mm in diameter and 74 mm in length features massive continuous torque of 165 mNm and weighs in at just under 320 g – about half the weight of conventional motors with comparable power.

The four-pole brushless DC servo motor is ideal for applications in which high power and dynamic start/stop operation with the lowest possible total weight is an important factor.  Perfect application fits include humanoid robots, electric grippers used in process automation and high performance traction drives used in inspection robotics.

The 3274 BP4 is overload-resistant and operates without wear-prone mechanical commutation. As a result, its operational lifetime is many times longer than that of a conventional DC micro motor. The slope of the motor characteristic curve is just 3 rpm/mNm, with a stall torque of 2.7 Nm.

The 3274 BP4 can reliably deliver what the application demands even under the harshest ambient conditions, such as at low temperatures or high mechanical loads (e.g. in aerospace applications). This is made possible by a robust stainless steel housing and the omission of adhesives, which are otherwise usually used for assembly.

One standout feature of this motor series is the high flexibility in its design. The 3274 BP4 series is equipped as standard with digital hall sensors. High-resolution optical and magnetic encoders can be attached with ease to the rear multifunction flange. As an option, the motor is also available with analog (linear) hall sensors that can replace an encoder in many applications. A large selection of optimal performance precision gearheads rounds off the complete drive system.


MICROMO (FAULHABER Group) specializes in high precision, micro drive systems, servo components and drive electronics with output power of up to 200 watts. The product range includes small brushless DC motors, small brush DC motors, piezo motors, micro stepper motors, linear servo motors, gearheads, encoders and motion controllers. In addition, MICROMO also offers custom design solutions for markets such as medical, aerospace, optics, robotics, and semiconductor equipment.

MICROMO's Application Engineers look beyond just components to offer optimal solutions for custom mechanical and electrical requirements. MICROMO's seasoned team has the experience in the field to assist customers with choosing the correct component and system for unique motion control needs and to meet superior precision and reliability requirements.

To learn more about incorporating this motor into an application or device, please contact MICROMO today and speak with an engineer.