MRS142D-2N-0050-NNNN Bosch Rexroth Indramat
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The Bosch Rexroth Indramat MRS142D-2N-0050-NNNN is a synchronous motor in the MRS Synchronous IndraDyn H Motors series with four pole pairs and an outer diameter of 97 mm. This motor features a lamination length of 175 mm, overall length of 211 mm, and a rotor inertia of 0.014 kg·m².
Internal Product Review
The MRS142D-2N-0050-NNNN is a Bosch Rexroth Indramat MRS synchronous IndraDyn H motor with 4 pole pairs and 0.014 kg·m² rotor inertia. A balanced mechanical design with 12 M6 balancing holes and an 8.4 kg rotor mass supports smooth running and stable dynamic performance. An excellent choice for motion systems that demand precise and dependable motor behavior.
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Product Description:
The MRS142D-2N-0050-NNNN is a synchronous rotor assembly in the MRS Synchronous IndraDyn H Motors series produced by Bosch Rexroth Indramat. Within an IndraDyn H traction or spindle package, this rotor converts the stator's rotating magnetic field into mechanical motion for conveyors, packaging machines, and other closed-loop automation axes. Its construction combines a laminated steel core with permanent-magnet excitation so that torque is generated efficiently during each electrical cycle.
The radial envelope of the rotor is limited to 97 mm, enabling installation in housings with minimal clearance, while its axial projection reaches 211 mm, a length that accommodates the cooling passages and bearing seats used in the matched motor housing. Inside that envelope, a magnetic stack measuring 175 mm establishes the active flux path, and the added lamination length increases torque density without changing the outer size. Electrical commutation is based on 4 pole pairs, so the mechanical output speed equals one-fourth of the electrical drive frequency. Dynamic performance is influenced by a rotor inertia of 0.014 kg·m², which supports quick acceleration while still smoothing minor load transients.
Twelve balance points tapped at 12 x M6 x 10 mm allow trim weights to be installed after coupling, which helps reduce residual vibration at high speed. For fluid delivery, the hub includes 2 x M40 x 1.5 pressure ports that route coolant or oil directly toward the laminations to maintain thermal stability during continuous duty cycles. A rotor mass of 8.4 kg provides enough flywheel effect for process consistency while remaining manageable for vertical-axis handling systems. The rotor is intended for use with IndraDyn H stators and drives, so the magnetic and mechanical interfaces remain aligned across the system.
