MRT210A-3N-0120-NNNN Bosch Rexroth Indramat
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The Bosch Rexroth Indramat MRT210A-3N-0120-NNNN is part of the MRT Synchronous IndraDyn T Motors series and features an open kit motor design with bandaged magnets for mechanical protection. This motor is water cooled with IC3W7 cooling mode, has a maximum mechanical speed of 2500 min⁻¹, and comes with an IP00 degree of protection. The rotor has a mass of 3.0 kg, inertia of 0.01200 kg·m², and offers fixing threads on both sides.
Internal Product Review
The MRT210A-3N-0120-NNNN is an open kit synchronous motor with IC3W7 water cooling, well suited for demanding servo installations. Bandaged magnets and a maximum mechanical speed of 2500 min⁻¹ support stable high-speed operation and strong mechanical confidence. Thermal class 155 (F) adds valuable heat tolerance and rounds out a very capable IndraDyn T motor.
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Product Description:
The MRT210A-3N-0120-NNNN synchronous torque motor rotor comes from Bosch Rexroth Indramat and belongs to the MRT Synchronous IndraDyn T Motors series. As an open-kit rotor, it is intended for direct integration into machine frames, where it delivers high continuous torque without gearbox losses for indexing tables, printing drums, and similar automation axes. This component is part of a modular direct-drive system that allows compatible stators and cooling circuits to be matched to the mechanical envelope of the target machine. Direct integration also reduces the number of power-transmission components between the motor and the driven load.
Thermal management relies on IC3W7 water cooling, so heat is extracted through a liquid jacket rather than by airflow, enabling sustained output in confined housings. The rotor has no enclosure and provides IP00 protection; therefore, it must operate inside a sealed machine compartment that prevents contact with exposed parts. Safe mechanical operation is limited to a maximum speed of 2500 rpm, which is the upper limit for controlling centrifugal stress on the permanent magnets. Dynamic response is supported by a rotor inertia of 0.01200 kg·m², balancing acceleration capability with speed stability. The windings and insulation use thermal class 155 (F), allowing continuous operation at winding temperatures up to 155 °C without accelerating insulation aging under normal operating conditions.
Mechanical strength is enhanced by bandaged magnets that resist radial forces and keep the magnetic elements secure during rapid operating cycles. The frame style is open kit-motor construction, so the rotor is supplied without bearings and must be installed on the machine’s shaft support. The rotor is secured on both sides to provide stable mechanical attachment within the completed motor assembly. Connection to the driven hub uses a rotor fixing thread pattern of 12 x M6 x 14 mm, providing twelve evenly distributed tapped holes for attachment. With a mass of 3.0 kg, the rotor places moderate loading on the installed bearing set while retaining sufficient magnetic and structural material for torque production.
