Product Description:

The 1MS241H-6C-A1 stator is produced by Bosch Rexroth Indramat for use in the 1MB High-Speed Asynchronous Motors series. It generates the rotating magnetic field that drives a matching rotor in high-speed spindle applications such as milling, drilling, and grinding. Because the rotor is separate, the stator remains fixed in the spindle housing while the rotating mass stays concentrated in the shaft assembly. By combining the magnetic core with an integrated cooling jacket, the unit can be mounted directly in the spindle housing and helps keep overhung mass off the bearing set. This arrangement suits spindle designs that need compact packaging and stable high-speed operation.

With a frame size of 241, the stator matches the outside diameter and bolt circle used for this motor platform. The motor length code H indicates a longer axial lamination stack, which supports higher continuous power without changing the frame diameter. Winding variant 6C matches the conductor arrangement to the required drive output voltage. Thermal management relies on liquid cooling, so heat from the copper windings is removed by a coolant circuit instead of ambient airflow. The housing uses an aluminum cooling jacket, providing a lightweight path for transferring heat from the laminations to the circulating fluid.

A pre-terminated 1.5 m loom routed through the stator end is included to simplify routing toward the motor connector and reduce lead strain at high spindle speeds. Supplied as a stator for a 1MB frameless spindle motor, it fits with approved rotor kits and sensor assemblies without additional machining. The fixed lead exit helps keep wiring stable inside compact spindle cartridges and supports orderly cable routing around the stationary motor section. It also uses shared mounting geometry and coolant port locations across related units in the platform, which helps maintain a consistent spindle layout.