Product Description:

The 1MS160F-4E-A1 is a stator assembly produced by Bosch Rexroth Indramat for the 1MB High-Speed Asynchronous Motors series. Serving as the fixed magnetic field generator inside a frameless spindle package, this component partners with a separate rotor to create the torque and speed required in high-speed machining centers. Because it is a frameless motor element, it is intended to be integrated into the machine's own spindle structure rather than mounted as a complete housed motor. Its construction allows direct integration into compact motor housings, letting builders install an efficient electromagnetic core for CNC milling, drilling, and grinding spindles without expanding the envelope of the machine head.

A 1.5 m loom exits through one stator end, providing a ready-made power and sensor link that reaches the spindle drive cabinet without intermediate connectors. Heat is removed by liquid cooling, and coolant circulates around the lamination stack to keep winding temperature within rated limits during continuous high-speed duty. The assembly uses frame size 160, and length code F gives it the active iron depth used for higher continuous torque density. An integrated aluminum cooling jacket stiffens the stator body and transfers heat efficiently to the circulating fluid during sustained operation.

The winding variant 4E sets the turn count and conductor gauge so the drive can apply voltage and current suited to rapid spindle acceleration. The unit is supplied as a stator for a 1MB frameless spindle motor, which lets builders embed the magnetic system directly into custom housings and keep overall spindle diameter low. Produced by Bosch Rexroth Indramat, it is matched for use with compatible rotor kits in the 1MB High-Speed Asynchronous Motors platform. This arrangement leaves the surrounding housing, bearing set, and spindle shaft to be selected for the target machine geometry while keeping the magnetic section standardized.