Product Description:

The 1MS160N-4A-A2/S010 stator is produced by Bosch Rexroth Indramat for the 1MB High-Speed Asynchronous Motors series. This component represents the stationary winding section of a frameless spindle motor and is installed directly in the machine housing to produce the rotating magnetic field that drives the paired rotor. In industrial automation, the part is integrated into machining centers, grinding spindles, and transfer stations where high peripheral speed and compact envelopes are required, and its frameless construction lets builders embed the drive element without an external motor casing.

Heat is removed through liquid cooling, allowing the stator to sustain the thermal loads produced during continuous high-frequency switching. The mechanical outer envelope belongs to frame size 160, giving a fixed diameter reference when aligning the motor cavity with bearing cartridges or machine beds. Length code N indicates the axial stack height, which affects achievable power density without altering the mounting pitch. A factory-installed 1.5 m loom exits at the stator end so the winding leads can be connected to the drive cabinet without additional joints. Around the laminated core sits an aluminum cooling jacket that forms the liquid channel and gives the assembly structural rigidity while minimizing mass.

Electrical integration is simplified because the winding package is suitable for third-party drives, so builders are not restricted to proprietary inverters. Winding variant 4A establishes the copper cross-section and impedance set needed to match the voltage and current ranges of modern high-speed spindles. Thermal monitoring is embedded through NTC resistors, PTC resistors, and bimetals, enabling the controller to react before insulation limits are exceeded. The unit is a stator for a 1MB frameless spindle motor and completes the electromagnetic circuit once it is paired with a compatible rotor and sensor system.