Product Description:

The 1MS200D-4F-A1 stator is manufactured by Bosch Rexroth Indramat and belongs to the 1MB High-Speed Asynchronous Motors series. Designed for integration into frameless spindle assemblies, the unit provides the rotating magnetic field needed to drive high-speed machining and grinding spindles in automated production lines. Its design includes only the stationary electromagnetic section, so the rotor and bearing system are supplied by the machine builder to keep the spindle package compact inside tight mechanical envelopes. This arrangement also allows the spindle housing, bearings, and shaft structure to be selected for the intended speed range and machine layout.

Within the stator, coolant circulates through a liquid cooling circuit around the laminations to maintain thermal stability during continuous high-frequency operation. The unit uses frame size 200 for dimensional compatibility, and motor length code D gives a mid-range axial length that balances torque density with installation depth. Its winding variant 4F sets the conductor turns and insulation stack for the target voltage class, while an integral aluminum cooling jacket improves stiffness and heat transfer without requiring an external finned housing. By removing heat close to the active iron, the cooling path helps support consistent electromagnetic behavior during sustained spindle duty.

Cabling is supplied as a 1.5 m loom that exits through the stator end, allowing direct connection to the drive without field-fabricated harnesses. This arrangement keeps the winding leads short, which helps limit added impedance and simplifies routing through the machine frame. The fixed loom also reduces the need for intermediate joints inside the spindle enclosure, which helps preserve a clean internal layout. Cable exit at the stator end leaves more freedom around the outer housing for coolant fittings and mounting features.