Product Description:

The MSS142D-0700-FA-N0CN-NNNN is a frameless stator assembly developed by Bosch Rexroth Indramat for the MSS Synchronous IndraDyn H Motors series. It is intended for direct integration into machine frames where compact, high-torque synchronous drives are needed for indexing tables, spindle drives, or rotary actuators in industrial automation. Because the stator is installed as part of the surrounding machine structure, the builder can place the magnetic assembly close to the driven load and reduce the space normally taken by a conventional motor housing.

This stator operates from a three-phase supply, and its 3-phase topology supports sinusoidal commutation with matched IndraDrive inverters. The windings have a protection rating of IP00, so the surrounding machine housing must provide enclosure protection and manage airflow around the active parts. Ambient operation is permitted up to 40 °C and down to 0 °C, which is the range for continuous torque without derating. Installation is permitted up to 1000 m above sea level; above that height, reduced air density can limit heat transfer and may require current reduction. Ten M6 fixing holes on each face and matching M6×12 mm ground and stator-mount threads support rigid attachment to the machine yoke, while one ground terminal per face bonds the lamination stack to protective earth. Coolant connections use an M16×1 mounting thread and a G 1/8 return port so the circuit can be hard-piped or fitted with quick couplings.

The liquid-cooling circuit is rated for a maximum pressure of 6 bar, and keeping the line below that level helps protect the embedded channels and seals. A coolant flow of 4.0 l/min is required to keep copper temperature stable, and at that flow the internal passages produce a pressure drop of 1.9 bar, leaving room for hose losses elsewhere in the loop. The stator is supplied in an open kit motor configuration, which allows the coolant manifold to be arranged to suit the spindle housing or rotary assembly. Without an external frame, the motor package keeps radial stack height low around the application shaft and supports compact machine layouts.