MRS382D-2N-0230-NNNN Bosch Rexroth Indramat
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The Bosch Rexroth Indramat MRS382D-2N-0230-NNNN is a synchronous motor from the MRS Synchronous IndraDyn H Motors series. It delivers a rated power of 37.2 kW and a rated speed of 200 rpm, with a maximum torque of 3700 Nm and rated torque of 1775 Nm. The motor features a rated current of 101 A, a step interference fit rotor design, and a rotor internal diameter of 230 mm.
Internal Product Review
The MRS382D-2N-0230-NNNN is a Bosch Rexroth Indramat synchronous IndraDyn H motor designed for high-torque industrial motion applications. Rated output of 37.2 kW and rated torque of 1775 Nm give the motor excellent low-speed authority in demanding drive systems. Maximum torque of 3700 Nm stands out as a major performance advantage.
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Product Description:
The MRS382D-2N-0230-NNNN is a frameless synchronous motor kit manufactured by Bosch Rexroth Indramat within the MRS Synchronous IndraDyn H Motors series. Integrated directly into a machine shaft, this motor acts as a torque-generating element for rotary tables, winders, and heavy indexing axes, eliminating the need for gear reductions. In industrial automation, it delivers low-speed, high-precision rotation by producing electromagnetic torque on the production axis itself. Because the stator is mounted in the machine housing and the rotor shrinks onto the hub, the assembly saves space and reduces maintenance associated with couplings.
At its continuous operating point, the motor delivers a rated torque of 1775 Nm while turning at a rated speed of 200 rpm; together these values yield a mechanical output of 37.2 kW. Providing this torque requires a rated phase current of 101 A, drawn through copper windings that exhibit a resistance of 0.46 Ω at 20 °C. The torque constant is 17.57 Nm/A, so drive current scales linearly with output torque. Magnetic saliency is characterized by a longitudinal inductance of 5.48 mH and a crosswise inductance of 10.28 mH, which the controller uses to calculate field-oriented current vectors for efficient operation.
For short duty cycles, the drive can supply a maximum current of 250 A, allowing the motor to reach a peak torque of 3700 Nm for rapid indexing or acceleration. The electromagnetic system contains 9 pole pairs, which determine the electrical frequency needed to attain shaft speed and influence control resolution. A back-EMF constant of 1250 V/1000 rpm links velocity to generated voltage and helps with inverter selection. Mechanical traits include a rotor inertia of 2.108 kg·m², a 230 mm internal rotor diameter, and a step interference-fit rotor design that seats the laminated core securely on the machine shaft. These traits shape dynamic response and simplify integration into large-bore process equipment.
