Product Description:

The MSS382D-0020-FA-N0CN-NNNN is a liquid-cooled synchronous motor manufactured by Bosch Rexroth Indramat for the MSS Synchronous IndraDyn H Motors series. Designed as a direct-drive component, it delivers high torque at very low shaft speeds, allowing direct installation on rotary tables, plastic extruder screws, and other slow-turning axes. The motor interfaces with IndraDrive converters and position controllers, providing closed-loop control for heavy industrial automation tasks.

This model supplies a rated mechanical output of 37.2 kW while operating at a rated speed of 200 rpm. Its continuous torque reaches 1775 Nm with a rated current of 101 A. The relationship between current and torque is represented by a torque constant of 17.57 Nm/A. Copper losses are moderated by a winding resistance of 0.42 Ω and an inductance of 15.6 mH, which affect current ripple and drive filter design. To accommodate the necessary supply conductors, the stator terminal accepts two power wires with a cross section of 16.0 mm² each. A discharge capacity of 44.8 nF helps divert common-mode electrical noise to the motor frame. Under rated load, the stator releases 9.40 kW of heat, which is removed by an internal coolant jacket with a volume of 0.91 L.

The cooling circuit requires a flow rate of 13.5 L/min to keep the winding temperature within operating limits during intermittent overloads. For brief periods of high demand, the drive can deliver a maximum current of 250 A, and the motor can produce up to 3700 Nm of peak torque without demagnetization. Rotational behavior is influenced by a rotor moment of inertia of 1.911 kg·m², which helps smooth motion under large payloads but requires adequate drive torque for responsive positioning. Heat exchanger selection must account for the stator’s thermal load and the required coolant flow. The selected drive amplifier must also accommodate the motor’s continuous operating current and short-term peak demand.