Product Description:

The MSM031B-0300-NN-M5-MH0 is a compact synchronous motor built by Bosch Rexroth Indramat for the MSM IndraDyn S Synchronous Motors series. It serves as a rotary actuator that works with an IndraDrive controller to convert electrical input into controlled mechanical motion. This makes it suitable for indexing tables, small pick-and-place heads, and other light-duty automation axes that require accurate speed control, repeatable positioning, and compact installation space.

This motor delivers a continuous standstill torque of 0.64 Nm, meaning it can hold that load at zero speed during continuous operation without overheating. Heat is released solely through natural convection, eliminating the need for external fans or liquid cooling and keeping the installation arrangement simple. The mechanical frame follows size code 031, giving a standardized flange and pilot diameter that mates with gearboxes and mounting plates in the same size group. Electrical characteristics are tied to winding code 0300; this code sets the coil resistance and inductance so the drive can supply rated current without magnetic saturation. Output power is transferred through a plain shaft, allowing direct coupling with friction-fit hubs or set-screw collars without the alignment requirements of a keyed connection.

The motor is supplied without a holding brake, so position must be secured by the drive or by an external mechanical device when power is removed. Stator stack length designation B indicates the medium body length in the 031 family, balancing torque density with a compact overall footprint. It is a synchronous motor, so the rotor follows the stator field with zero slip during operation. The housing is built without a shaft seal; therefore, the installation area must remain free of coolant spray or oil ingress to preserve bearing service life and protect the bearing area from contamination.