Product Description:

The 1MS310D-6B-A2/S010 is a stator module produced by Bosch Rexroth Indramat within the 1MB High-Speed Asynchronous Motors series. Combined with a compatible rotor, this frameless assembly forms a high-speed spindle motor for precision machining centers and other industrial automation equipment. As the stationary portion of the motor, it houses the windings and thermal sensors. Its open integration concept also allows the surrounding machine structure to supply the bearing arrangement, housing geometry, and overall spindle package.

In operation, the stator is suitable for use with third-party drives, so it can be paired with inverters from multiple vendors without signal-level modifications. Power conductors exit through a 1.5 m loom that routes out of the stator end, giving enough length for cabinet connections while helping keep cable placement orderly inside the machine envelope. Heat generated in the copper is removed by liquid cooling, which supports stable winding temperature during continuous high-speed duty cycles. The magnetic core belongs to size 310, which identifies the outer diameter used for this frame. A D length code indicates an extended axial stack, increasing active iron volume and supporting higher continuous output.

For thermal protection, the winding bundle contains NTC resistors, PTC resistors, and bimetals, allowing the drive to reduce load or shut down before critical temperatures are reached. Efficient coolant transfer is supported by an aluminum cooling jacket, whose high thermal conductivity helps move heat away from the lamination pack. The assembly is delivered as a stator for a 1MB frameless spindle motor, so it can be embedded directly into a custom housing while preserving radial space for the surrounding spindle structure. The 6B winding variant sets the phase impedance and electrical constant values expected by the selected frequency converter.