Product Description:

The MSK103A-0300-NN-M1-UG1-NNNN is an IndraDyn S synchronous servomotor built by Bosch Rexroth Indramat for the MSK IndraDyn S Synchronous Motors series. In automated assembly lines and packaging cells, this motor provides closed-loop torque and position control so that axes can accelerate, decelerate, and hold target positions with repeatable accuracy. Its standard design, plain shaft, and natural-convection housing allow direct integration into machinery without auxiliary cooling equipment.

Heat is removed from the stator by natural convection, so the motor can be mounted in enclosures where forced airflow is unavailable. A rotatable 240° encoder connector simplifies cable routing, while the digital feedback channel uses the Hiperface protocol so the drive can read high-resolution rotor data in real time. The optical feedback element distinguishes 128 incremental tracks, which provides 128 signal periods per mechanical revolution and supports precise commutation. For holding vertical loads, the electrically released brake delivers 33 Nm of static torque and engages automatically when power is lost. An enclosure protection rating of IP65 helps seal the winding and encoder chamber against dust ingress and low-pressure water jets commonly found on factory floors.

Position data is retained through power cycles by a multi-turn absolute sensor that counts shaft rotations internally, eliminating homing sequences after maintenance. Reliable service is maintained between 0 to 40 °C, which matches common cabinet climates without derating. The class F winding insulation has a temperature index of 155, allowing continuous copper temperatures suited to high-duty operation. Electrical characteristics follow winding code 0300, giving the matching drive the resistance and inductance values needed for proper current-loop tuning. The motor uses a size 103 stator with an A-length housing, which supports compact machine layouts without requiring forced-air cooling.