Product Description:

The 1MS375D-6D-A1 stator is produced by Bosch Rexroth Indramat and belongs to the 1MB High-Speed Asynchronous Motors series. As a frameless motor component, it forms the stationary part of a spindle drive and generates the alternating magnetic field that interacts with a separately supplied rotor. This arrangement supports high shaft speeds in precision machining centers, grinding machines, and other automated equipment while allowing the stator to be integrated directly into the machine spindle housing.

Thermal management is handled by liquid cooling, where coolant flows through an internal channel to remove heat from the copper windings and help maintain a stable operating temperature at elevated speed. Electrical connections leave the active zone through a prefabricated 1.5 m loom, so the drive can be connected without additional harness fabrication. The mechanical interface uses frame size 375, which matches the outer dimensions required for compatible spindle assemblies. Surrounding the lamination stack is an aluminum cooling jacket, and its high thermal conductivity helps transfer heat efficiently to the liquid circuit while keeping overall weight low. Magnetic behavior comes from the 6D winding variant, which suits the voltage and frequency range used by high-speed inverters.

The axial stack uses motor length code D, which indicates a medium length that balances torque output with a compact envelope in vertical or horizontal spindle arrangements. The unit is a stator for a 1MB frameless spindle motor and interfaces directly with matching rotor kits from the same family, helping maintain predictable magnetic clearances. Its integrated form supports modular spindle designs that benefit from repeatable mounting geometry, thermal stability, and pre-engineered winding data for consistent drive setup.