Product Description:

The MSM020B-0300-NN-M0-CH1 is a synchronous motor manufactured by Bosch Rexroth Indramat and supplied in the MSM IndraDyn S Synchronous Motors series. It serves as a compact rotary drive element that reproduces commanded torque and velocity from a servo inverter, so machine axes can position loads quickly and repeatably in automated assembly cells, conveyors, or small tooling tables. Within this series, the motor shares mechanical standards and parameter structures with other IndraDyn S units, supporting consistent operation in multi-axis platforms that use Rexroth drive controllers.

This model removes process heat by natural convection, eliminating the need for external blowers or coolant lines and simplifying cabinet design. Power, brake, and feedback conductors are routed through a factory-installed cable tail, so the leads can be connected to suit local wiring requirements. Rotor position is reported by a multi-turn absolute encoder, providing true shaft angle over multiple revolutions for homing-free startups and reliable position recovery after power loss. A normally engaged holding brake rated at 0.29 Nm secures vertical or load-bearing axes, and the brake is released through an electrical release coil that energizes when motion is commanded. The brake allows mechanical locking without relying on servo current when the machine is idle or in emergency stop.

The motor has length code B and frame size 020, giving it a short body and a 40 mm flange square that fits directly on compact stages. Torque is transmitted through a plain shaft, which helps minimize runout and supports zero-backlash couplings; no shaft seal is fitted, so the installation must prevent fluid ingress at the coupling zone. Stator windings identified by code 0300 set the voltage constant and rated current so the drive can be parameterized without additional measurements.