Product Description:

The MRS102F-1N-0046-NNNN rotor is manufactured by Bosch Rexroth Indramat as a member of the MRS Synchronous IndraDyn H Motors series. Intended for synchronous spindle drives, this rotor forms the rotating half of the direct-drive motor pair, converting electromagnetic fields from the stator into shaft torque without an intermediate mechanical transmission. Its dimensional code corresponds to size 102 housings and frame length F, allowing machine builders to integrate the spindle into machining centers, printing lines, or pick-and-place gantries where high positional repeatability and a compact axial envelope are priorities.

The overall rotor length is 286 mm, which sets the magnetic stack depth and influences achievable momentum during rapid acceleration. The inner bore measures 46 mm, providing clearance for through-shaft cooling lines or clamping sleeves commonly used in hollow-spindle designs. A protection rating of IP00 means the part is supplied without an enclosure, so the machine housing must provide suitable guarding against contact and foreign objects. The rotor has a frame size of 102, which corresponds to the intended stator and housing dimensions. Mounting is performed through plain drilled holes that accept alignment pins or bolts without requiring additional flange features.

The permitted ambient temperature range for continuous operation is 0–40 °C. Operation within this range helps prevent excessive temperature increases after the rotor is paired with its matching stator. The motor uses insulation class F, allowing an internal temperature rise suitable for extended duty cycles in high-speed spindle service. The bore has a smooth rotor surface, allowing sleeve or shrink-fit retention while minimizing stress concentrations in the magnetic core. The design is the Standard version, with no special balancing, sensor carrier, or sealing adaptations beyond the baseline configuration.