Product Description:

The MSM031B-0300-NN-MQ-MH1 is a synchronous motor manufactured by Bosch Rexroth Indramat for the MSM IndraDyn S Synchronous Motors series. It serves as the rotary actuation element in compact industrial axes where precise speed and position are controlled by a servo drive. This design applies torque directly to the load without mechanical gearing, which helps keep the drivetrain simple and reduces the space needed for couplings or intermediate transmission components. It is suited to light-duty packaging equipment, handling units, and small assembly stations that require repeatable motion from a compact motor package.

At standstill, the rotor can develop 0.64 Nm of continuous torque, which is the continuous holding torque available while the axis remains energized. Heat produced under that load is removed by natural convection, so no forced-air or liquid circuit is required. Dynamic stopping and holding are supported by an electrically released brake, and the actuation principle is listed as electrical release. Once engaged, this brake sustains up to 1.27 Nm of torque, allowing the shaft to remain locked when power is removed. The mechanical envelope follows the MSM size code 031, which sets the flange, bolt pattern, and overall body diameter used within the series.

The housing uses length code B, which provides room for the stator stack while keeping the motor compact enough for small handling systems and closely spaced machine modules. The motor uses a plain shaft to transmit motion with minimal runout, and it has no shaft seal, so it is best suited to installations where coolant spray or other fluid ingress is not expected at the shaft exit. Winding code 0300 selects the phase resistance and inductance used by the matching drive, allowing the motor to produce rated torque with standard current peaks and predictable dynamic response.