Product Description:

The MRT531E-3N-0410-NNNN is a rotor built by Bosch Rexroth Indramat for the MRT Synchronous IndraDyn T Motors series. It serves as the rotating element of a direct-drive torque motor, allowing high continuous torque to be delivered straight to machine shafts without intermediate gearing. When integrated into indexing tables, rotary transfer stations, or print cylinders, the component helps reduce backlash and maintenance requirements while keeping position accuracy high in automated equipment.

This rotor develops an axial magnetic pull of 565 N, a figure that must be counteracted by the adjacent bearing set during operation. The maximum mechanical speed is limited to 300 rpm, so the associated drive controller must apply speed supervision to avoid overshoot. With a clear bore measuring 410 mm in diameter, the unit can be slipped over large spindle housings or hollow shafts commonly found in converting and metal-forming systems. A mass of 47.0 kg provides the thermal capacity needed for continuous duty, but it also affects acceleration profiles during operation. The rotor has an IP00 protection rating, meaning it has no inherent guarding against dust or moisture; the machine frame therefore needs an enclosed housing or filtered airflow. Final attachment to the stator flange is handled with standard screws, matching typical assembly practices in modular machines.

A radial attractive force of 4590 N acts between rotor and stator air gaps, so rigid support plates are required to keep running clearance constant. The rotor inertia is 2.3 kg·m², which affects how quickly torque commands translate into angular motion. The rotor has 20 mounting holes, which distribute clamp load evenly and help minimize harmonic distortion during high-precision positioning. Each mounting hole uses an M8 × 18 mm deep thread, allowing repeatable preload without special tooling.