Product Description:

The 1MS310B-6D-A1/S010 is a stator for 1MB frameless spindle motors manufactured by Bosch Rexroth Indramat and belongs to the 1MB High-Speed Asynchronous Motors series. Serving as the stationary electromagnetic element of a high-speed spindle, it produces the rotating field that drives a matching rotor, enabling precise speed and torque control in CNC machining centers and other automated production systems. By integrating directly into the spindle housing, the stator supports compact machine layouts and reliable high-speed operation.

Thermal management is provided by liquid cooling, integrated within a stator body that corresponds to frame size 310 and the compact motor length code B profile. The coolant channels surround the laminated core so heat is removed at its source, helping preserve winding insulation life during continuous duty. Power, temperature, and feedback conductors exit through the rear via a 1.5 m loom that is factory installed and routed through the stator end, which simplifies assembly in tight spindle cavities. Mechanical contact with the machine’s coolant manifold is achieved through the external aluminum cooling jacket, delivering uniform temperature distribution even when the spindle operates at maximum speed.

Electromagnetic output is shaped by the 6D winding variant, whose turns count and wire gauge set the voltage constant required for high-frequency inverter operation. Electrical interfacing remains flexible because the stator is rated for use with third-party drives, permitting integration with CNC platforms that do not employ Rexroth power modules. For thermal protection, embedded NTC resistors track real-time temperature, while separate PTC resistors trigger an overtemperature threshold and discrete bimetals provide a redundant mechanical cutoff if coolant flow is lost or ambient conditions exceed design limits.