Product Description:

The 1MS200H-4B-A2/S010 is a stator element produced for the 1MB High-Speed Asynchronous Motors series by Bosch Rexroth Indramat. This component functions as the stationary magnetic field generator within a frameless spindle motor, supplying the excitation needed for rapid torque development in automated milling, grinding, and turning centers. Integrated into a machine tool head together with its matching rotor, the stator converts drive current into a rotating field so that high-speed spindles can maintain precise velocity and load control during continuous industrial operation.

The unit uses liquid cooling; a coolant circuit routed around the laminations removes Joule and core losses before they raise winding temperature. Power and sensor conductors exit through a 1.5 m loom that is routed through the stator end, which helps cable management inside a cramped spindle housing. Mechanical dimensions follow frame size 200, establishing the outer diameter and mounting envelope expected for this motor family. Axial length is identified by motor length code H, which indicates the stack height and the related continuous power capability.

The stator is suitable for third-party drives, so any inverter that can supply the correct current and frequency can energize the winding set. Heat transfer is improved by an aluminum cooling jacket bonded around the core, providing a high-conductivity path between the copper slots and the external coolant. Over-temperature protection is supplied by NTC resistors, PTC resistors, and bimetals, allowing the control system to monitor coil condition and respond when temperature limits are reached. The electromagnetic layout follows winding variant 4B, a coil arrangement selected to match the voltage constant and torque profile required for high-speed spindle service.