Product Description:

The MRT201D-3N-0110-NNNN is a rotor element manufactured by Bosch Rexroth Indramat for the MRT Synchronous IndraDyn T Motors series. This unit pairs with a stator sleeve to form a frameless torque motor used in industrial automation where slow, high-torque rotation drives indexing tables, roll feeders, or spindle heads. By delivering torque directly at the load, the rotor helps eliminate mechanical gearboxes and reduces positional error within closed-loop motion systems.

An inside bore of 110 mm allows placement around sizable shafts or service conduits. The rotor mass is 6.8 kg, which is useful when calculating bearing preload and acceleration behavior. Rotational dynamics are further characterized by a mass moment of 0.03400 kg·m², and production tolerances are restricted to ±10 % so multi-axis machines remain dynamically matched. The magnet stack uses a permanent magnet arrangement, ensuring fixed flux without external excitation. Twelve fastening screws engage M5 mounting threads that reach 14 mm into the flange, and the twelve-thread pattern provides balanced clamping force that withstands torsional pulses during cyclic positioning duties.

In its delivered state, the rotor carries an IP00 degree of protection, so environmental sealing must be provided by the surrounding housing. Centrifugal stresses limit the maximum mechanical speed to 1,500 rpm, allowing safe use in slow-speed torque applications while still accommodating rapid indexing moves when required. Mounting flexibility is enhanced because fixing threads are machined on both sides, letting the component be secured from the drive or load direction. This open construction also gives unimpeded access for air or liquid cooling paths that may be routed through the stator gap to remove heat during continuous duty.