Product Description:

The 1MS241H-6C-A1/S010 is manufactured by Bosch Rexroth Indramat and belongs to the 1MB High-Speed Asynchronous Motors series. It is supplied only as the stator portion of a frameless spindle package, so machine builders can embed it directly into the housing of a high-speed machining spindle or similar rotating component. In industrial automation, this stator generates the rotating field that drives the corresponding rotor, giving a compact electromagnetic core while allowing custom bearing sets, sensors, and mechanical interfaces.

For drive selection, the unit is suitable for third-party drives, giving integrators latitude to pair it with non-Rexroth inverters when current, frequency, and feedback limits are met. Heat is extracted through a liquid cooling circuit that maintains winding temperature during continuous high-power operation. The electromagnetic core follows frame size code 241, so its outer diameter matches other 1MB components of the same frame. Length code H indicates an extended active stack, increasing copper volume and torque capability without altering the mounting circle. Winding set 6C indicates the slot fill, conductor gauge, and turns per phase, setting the voltage constant and rated current that the chosen inverter must supply.

Power enters the stator through a 1.5 m loom routed through the stator end, which reduces junction points and eases routing inside the spindle housing. The unit uses an aluminum cooling jacket, so coolant flows directly around the teeth and yoke for efficient heat removal. Embedded NTC resistors, PTC resistors, and bimetals monitor winding temperature and provide layered over-temperature protection for drive shutdown logic. Delivered as a stator for a 1MB frameless spindle motor, the unit supports custom rotor integration for high-speed, low-inertia spindle systems with precise thermal control.