The MSK061C-0300-NN-S1-UG0-NNNN is an AC synchronous motor built by Bosch Rexroth Indramat for the MSK IndraDyn S Synchronous Motors series. It acts as a compact drive element that couples with IndraDrive amplifiers to position axes, adjust speeds, or generate coordinated torque in industrial automation lines. By integrating an optical encoder and a winding set optimized for medium inertia loads, the motor supplies precise feedback and consistent torque density needed in packaging, printing, and material-handling machinery. Its compact format also supports servo applications where installation space is limited but repeatable motion remains important.

The motor uses natural convection cooling, so heat is transferred through its housing surface without external fans or liquid circuits. This arrangement is useful in installations where forced airflow is not available. A 240° rotatable encoder connector permits cable exit in multiple directions, reducing strain during tight-space installation. Its drive shaft is a plain shaft, allowing direct coupling with clamped hubs or precision gears without keyway imbalance. Position feedback is generated at 128 signal periods, giving fine angular resolution when interpolated by the drive controller. The unit is supplied without a holding brake, so mechanical locking or regenerative torque must be provided externally if the load must remain secured during power-off.

Digital communication between the encoder and the control loop is based on the Hiperface protocol, enabling simultaneous transmission of absolute position data and parameter memory over a two-wire sine-cosine link. Measurement relies on an optical scanning principle that offers long-term stability against magnet aging, and the system delivers single-turn feedback so one mechanical revolution yields an absolute position value. This feedback arrangement lets the drive read rotor position during startup and controlled motion without separate sensing hardware. The frame is classified as motor size 061, and its stack length is coded C to balance torque with overall weight. Internal windings follow code 0300, matching the electrical characteristics expected by standard MSK power modules.