Product Description:

The MSS200B-008-A1N-NN is a stator section supplied by Bosch Rexroth Indramat for the MSS Synchronous IndraDyn H Motors series. As a standalone winding assembly for a synchronous kit spindle motor, it provides the electromagnetic field that interacts with a matched rotor to generate torque in high-speed machining or grinding spindles. This component supports a liquid-cooled, frameless layout that allows the motor to be built directly into the machine housing while conserving radial space.

This stator uses a liquid-cooled jacket to transfer heat away from the copper windings, allowing continuous high current without exceeding thermal limits. Its protection rating is IP00, which requires installation inside a closed spindle housing with external protection from dust and fluid ingress. The windings use Class F insulation, and the varnish system tolerates winding temperatures up to 155 °C before degradation begins. Power leads exit at the thick stator end, simplifying routing toward the drive cabinet when the stator is pressed into a bearing quill. The factory-attached motor leads are 1.5 m long, providing enough length for a drip loop while keeping impedance low for high-frequency inverter pulses.

The permitted ambient temperature range is 0 to +40 °C, and liquid coolant must remove heat losses whenever the surrounding temperature approaches the upper limit. The stator has no position transducer, so feedback electronics must be mounted elsewhere in the spindle assembly. An aluminum mantle surrounds the laminated core, providing structural stiffness and an efficient heat path to the coolant channel. Motor power conductors use a single line connection point that connects to the drive’s designated U, V, and W terminals. The external spindle housing must also provide the mechanical support and protection that are not included with the open stator assembly.