Faulhaber's flyweight servomotor packs a heavyweight punch

25 juli 2017 

Faulhaber has extended its extremely powerful BP4 product family with the brushless DC-Servomotor 2264…BP4. As well as having an outstanding ratio of torque to size and weight, the miniature drive comes with integrated sensors and a wide speed range.

The 4-pole motor achieves a torque of 59 mNm with a weight of just 140 g and a diameter of 22 mm. Furthermore, the 2264…BP4 reaches up to 34,500 revolutions per minute. The reason for the outstanding performance is the innovative segment winding of the coil, which was developed for the brushless DC-Motors of the BP4 family. Thanks to the overlapping, nested, individually wound segments, an especially large amount of copper can be accommodated in the coil. The high winding symmetry with minimal losses and appropriately high efficiency is a desirable side effect.

There is also room for a resilient shaft with a diameter of 4 mm and suitable bearings thanks to the compact coil. With its low inertia, the motor is well suited for dynamic start/stop operation. The 2264…BP4 is also overload-resistant. It operates without wear-prone mechanical commutation and, as a result, has a service life many times longer than standard DC-Micromotors. It can be used at temperatures of between -40 and 125 degrees Celsius.

Optionally integrated analog Hall sensors can replace an encoder in the majority of applications and determine the position of the output shaft very precisely. Compatible optical and magnetic encoders are also available for high-precision applications.

Among other things, the motor is ideally suited for industrial automation and the handpieces of electric tools, e.g. electric pruning shears and screwdrivers, motorised instruments for surgery, grippers and robots, and also for aerospace or for active prosthetics.

As well as the new 2264…BP4 series, Faulhaber is also adding a drive with integrated motion controller to the family of motors. The 3274…BP4, which is the most powerful motor in the family, is now also available as a motion control system. This combines the brushless high-performance motor with control electronics which have been tailor-made for it, in an extremely small space, creating a highly dynamic drive system for complex positioning tasks directly in the automation environment.

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