Product Description:

The MSS381F-0018-FA-N0CN-NNNN is a stator module manufactured by Bosch Rexroth Indramat for the MSS Synchronous IndraDyn H Motors series. Classified as a stator for synchronous kit spindle motors, this standard component forms the stationary portion of a high-performance spindle assembly used in CNC machining centers and other automated production lines. By generating the rotating magnetic field that drives the inserted rotor, it delivers stable torque at very low speeds, which is essential for precision cutting and positioning tasks in industrial automation.

Factory wiring is provided through a 1.5 m power cable with flying leads, allowing direct termination inside the drive cabinet without additional joints. Electrical conductors exit the stator through an axial cable connection, so the wiring and cooling lines remain aligned with the spindle axis and avoid radial obstructions. Heat is removed by a stator-cooling jacket that surrounds the laminated core. The integrated liquid-cooling circuit helps maintain acceptable coil temperatures under continuous load. The coolant ports are positioned axially to match the service channel of the machine housing. Because the stator is supplied without a motor encoder, any required feedback device must be mounted elsewhere on the shaft or spindle nose.

The open-frame design has an IP00 protection rating, requiring complete enclosure within the machine to prevent accidental contact and contamination. The windings use insulation class F, which permits winding temperatures up to 155 °C. Reliable performance is specified for ambient temperatures from 0 to +40 °C, making the stator suitable for use in temperature-controlled machining cells. The mechanical envelope has an F frame length, while the magnetic design is tuned for a rated synchronous speed of 180 rpm. Paired with winding variant 0018, this low-speed design supports high torque when driven by a compatible IndraDrive inverter in heavy milling, grinding, or honing applications.