MRS102B-0N-0000-M242 Bosch Rexroth Indramat
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MPN: R911388779
The Bosch Rexroth Indramat MRS102B-0N-0000-M242 is part of the MRS Synchronous IndraDyn H Motors series. It has a frame size of 102 and a total length of 136 mm with an iron length of 100 mm. The motor features insulation class F and operates within an ambient temperature range of 0 to 40°C, with an IP00 protection rating.
Internal Product Review
The MRS102B-0N-0000-M242 is an IndraDyn H synchronous spindle motor rotor designed for precision machine applications. Insulation class F and IP00 protection make the rotor a strong fit for controlled enclosures where thermal stability is a key advantage.
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Product Description:
The MRS102B-0N-0000-M242 rotor is manufactured by Bosch Rexroth Indramat for the MRS Synchronous IndraDyn H Motors series. Within a synchronous spindle motor, this rotor carries the embedded permanent magnets and delivers the rotating magnetic field that interacts with the stator windings, producing the torque and speed required by CNC spindles, packaging machines, and other automated equipment. Its mechanical profile is tailored to the IndraDyn H platform, allowing drive controllers to regulate position and velocity with the high accuracy required in industrial automation.
The rotor has a frame size of 102, which corresponds to the mechanical dimensions needed to fit the associated bearings and housing bores. A frame length code of B indicates the stack height used for the magnetic circuit and balances torque against the moment of inertia. The overall length is 136 mm, providing a clear installation envelope when the motor-spindle assembly is built. Within that envelope, the active iron length, Lfe, measures 100 mm. This dimension indicates the amount of magnetic steel available for flux and directly affects torque production. The motor insulation system is rated as class F, allowing the associated windings and resin components to withstand temperatures up to 155 °C without degradation.
The rotor has an IP00 protection rating, so it relies on the surrounding motor housing for protection and must be handled in a clean assembly area. The specified operating temperature range is 0–40 °C, which helps keep magnetic properties and mechanical fits within tolerance during typical shop-floor duty cycles. Supplied as a rotor, it is intended to be paired with a stator that has the same mechanical stack length. The component belongs to the IndraDyn H synchronous spindle motor family. Once installed in the completed motor, it supports high-speed, sensor-based control of spindle position and velocity.
