Product Description:

The MSK103B-0300-NN-S1-UG0-NNNN is an IndraDyn S synchronous servomotor manufactured by Bosch Rexroth Indramat within the MSK IndraDyn S Synchronous Motors series. This motor is intended for closed-loop positioning and velocity tasks in automated machinery, where the drive controller requires precise electromechanical conversion to keep axes aligned with command profiles. When paired with a compatible servo drive, it provides controlled rotary motion for machine axes that require accurate speed regulation and repeatable positioning.

Cooling is handled by Natural convection, so no external fan wiring is required. A protection rating of IP65 seals the housing against dust ingress and low-pressure water jets, supporting cabinet-free mounting. Continuous operation is permitted in ambient temperatures from 0–40 °C, while class 155 insulation supports winding temperatures associated with heavy cyclic loads. The frame uses motor size 103 with length code B, giving a compact footprint that balances torque capacity with available installation space. The plain shaft transmits torque without a keyway, and the design uses the standard shaft arrangement without optional sealing extensions.

Position data are delivered through the Hiperface interface, using an optical single-turn encoder that resolves the rotor over 128 signal periods. The encoder plug can be rotated through 240°, which helps with cable routing in tight cabinets or crowded machine layouts. Winding code 0300 identifies the coil arrangement and impedance used for drive controllers that supply standard MSK phase currents. The motor does not include a holding brake, so the axis must be held in place by external locking hardware or continuous drive torque after power removal. This combination of optical feedback, flexible connector orientation, and a plain shaft suits installations that need accurate motion control without added shaft hardware.