MRS102F-2N-0035-NNNN Bosch Rexroth Indramat
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The Bosch Rexroth Indramat MRS102F-2N-0035-NNNN is a rotor from the MRS Synchronous IndraDyn H Motors series, featuring a step interference fit mounting style and an internal diameter of 35 mm. This standard design rotor has a frame size of 102, insulation class F, and operates within an ambient temperature range of 0 to 40°C. It has a total length of 286 mm and a protection rating of IP00.
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Product Description:
The MRS102F-2N-0035-NNNN is a rotor manufactured by Bosch Rexroth Indramat for the MRS Synchronous IndraDyn H Motors series. Within a spindle motor, the rotor carries permanent magnets and couples mechanically to the shaft, converting the drive’s alternating electromagnetic field into usable torque. Its rotating assembly works with the matching stator to produce the controlled motion required by industrial spindle applications. The unit is supplied as an individual rotor component for installation within a compatible motor assembly.
The rotor has a frame size of 102, providing an outside diameter that aligns with the corresponding stator laminations. Its internal diameter is 35 mm, providing the required clearance and shaft interface for the intended motor configuration. The bore is machined for a stepped interference fit, allowing the rotor to be pressed onto the shaft with a secure mechanical grip. The assembly has an IP00 protection rating and therefore relies on the surrounding motor housing to prevent contact and contaminant entry. Stable operation is supported within an ambient temperature range of 0–40 °C. Correct installation requires careful alignment of the bore, shaft, and stator air gap to prevent uneven loading or contact during rotation.
The rotor is supplied in the standard configuration, without additional balancing features or integrated coolant passages beyond its baseline geometry. Its overall length is 286 mm, matching frame length code F and providing the magnetic stack depth required by the associated motor design. The motor uses insulation class F, which permits winding temperatures up to 155 °C even though the rotor does not contain windings. The rotor belongs to the IndraDyn H platform, which uses coordinated dimensions and materials across compatible motor components. Its permanent-magnet construction supports efficient torque production without requiring electrical connections to the rotating assembly. Proper support from the shaft and bearings helps maintain the air gap between the rotor and stator throughout the operating speed range.
