Product Description:

The 1MS200H-4D-A2/S011 is a stator section manufactured by Bosch Rexroth Indramat for the 1MB High-Speed Asynchronous Motors series. As a frameless element, it is combined with a separate rotor to create a high-speed spindle motor that can be embedded directly into machine tool heads or other precision equipment. In an automation context, this stator supplies the rotating magnetic field that drives the spindle, enabling accurate speed control for milling, grinding, or drilling operations where compact integration and thermal stability are critical.

Employing liquid cooling, the stator transfers heat to a circulating coolant rather than to ambient air, allowing continuous operation at elevated power levels within sealed housings. A frame size of 200 provides an outside diameter that matches associated mechanical interfaces for installation in standardized spindle casings. A length designation of H indicates an extended lamination stack, which increases the active iron length and raises torque capability compared with shorter variants. The winding configuration identified as 4D sets the conductor gauge and turn count, balancing phase resistance with the voltage range of matching drive systems. For easier installation, a prewired 1.5 m loom exits through the stator end, providing motor leads that can be connected directly to the inverter without additional field assembly.

The stator body is sheathed in an aluminum cooling jacket, giving a low-mass, corrosion-resistant path for coolant flow while maintaining uniform temperature around the laminations. This layout supports consistent thermal behavior across different frame and length variants. When specified as a Stator for 1MB frameless spindle motor, the unit lets designers select a rotor with the required moment of inertia and speed rating while preserving common mounting and cooling interfaces.