MDD025B-N-100-N2K-040GA1
The MDD025B-N-100-N2K-040GA1 is a synchronous servo unit built by Bosch Rexroth Indramat for the MDD Synchronous Motors series. It is intended for use with digital drive controllers, where the motor serves as the rotary actuator in a closed-loop axis. In factory automation, the unit converts electrical power from the drive into controlled mechanical motion for indexing systems, packaging equipment, and pick-and-place applications that require repeatable movement and fast response. Its compact format makes it suitable for installations where mounting space is limited but accurate servo control is still required.
Its nominal speed reaches 10000 rpm, allowing compact mechanisms to operate at high shaft speeds without requiring additional gear reduction. During standstill, the electromagnetic system can deliver a continuous torque of 0.60 Nm, which supports stable low-speed operation and controlled holding under light load. Electrical terminations are routed on side A through a molded connector, which helps simplify cable routing in tight enclosures. The flange has a centering diameter of 40 mm so the motor can be aligned accurately with gearheads or mounting brackets. The motor has a standard housing and standard dynamic balancing, which help reduce vibration during operation. It also has length code B, which corresponds to the stack height used for this frame size. An integrated shaft seal helps protect the bearing area from oil or dust ingress during service.
For position retention during power-off conditions, the unit uses a mechanical brake that produces 1.0 Nm of braking torque. Command data for the drive is supplied by an integrated absolute encoder, while coarse commutation information is provided through resolver feedback. This arrangement supports reliable position processing during normal servo operation. The rotor uses a plain shaft with a single shaft end on side A, matching the specified shaft-end arrangement for this motor size. The combination of the brake, shaft seal, and single-ended shaft layout supports use on vertical axes or compact rotary mechanisms where secure stopping and controlled alignment are important.
