Product Description:

The 1MS313F-8D-A1/S010 stator is produced by Bosch Rexroth Indramat for the 1MB High-Speed Asynchronous Motors series. Classified as a stator for frameless spindle motors, it forms the stationary electromagnetic portion of a high-speed spindle assembly used in machining centers and other automated tools. When paired with a matching rotor and encoder assembly, the unit creates a compact spindle drive that supports rapid acceleration and precise rotational control for milling, drilling, and grinding. Because the stator is frameless, it can be integrated directly into the spindle structure, which helps save installation space in high-speed machine designs.

The description stator for a 1MB frameless spindle motor indicates that the laminations, slot geometry, and winding pattern are arranged for high peripheral velocity while helping reduce iron losses. Its size is set by motor length code F, which gives a consistent cavity depth and torque density for spindle design. Heat is removed by liquid cooling, and the stator is built with an aluminum cooling jacket in a closed sleeve to support that flow. Power and sensor conductors exit through a 1.5 m loom routed at the non-drive end, which helps keep cable movement controlled inside the spindle housing and supports direct connection to the drive cabinet.

Protective devices are integrated directly into the winding package. A bundle of NTC resistors, PTC resistors, and bimetals allows fast temperature tracking, so the external inverter can reduce output or shut down before thermal limits are exceeded. The stator is suitable for third-party drives, which gives machine builders flexibility when selecting a compatible control platform. The integrated temperature devices give the drive multiple ways to monitor winding heat during continuous or rapidly changing spindle duty.