Product Description:

The MSK071D-0300-NN-M2-UG1-RNNN is a synchronous servomotor produced by Bosch Rexroth Indramat within the MSK IndraDyn S Synchronous Motors series. In multi-axis machining centers, pick-and-place gantries, and other closed-loop automation, the unit converts precisely modulated drive current into controlled rotary motion for rapid position or velocity loops. Its mechanical frame follows the D-length variant of the 071 size so it mates directly with standard Rexroth gearboxes and couplings used on modular production lines.

The motor dissipates heat solely through natural convection, eliminating auxiliary fans and simplifying cabinet airflow. A rotor and stator design with increased concentricity minimizes radial runout, which helps when coupling alignment affects accuracy. Power is transmitted through a plain shaft, allowing backlash-free clamp collars or shrink-fit hubs instead of keyed connections. Feedback wiring exits a rotatable 240° encoder connector so harness routing can follow panel constraints without strain relief conflicts. Position data is exchanged via the EnDat2.1 serial interface, providing incremental and absolute values along with electronic nameplate data to the drive controller.

High-resolution feedback is delivered by an optical scale with 2048 signal periods, and the sensor operates as a multi-turn absolute device that retains position over 4096 revolutions after power loss. Motion is held at rest by an electrically released brake that supplies 23 Nm of static torque, preventing vertical-axis drift when drives are disabled. The D-length housing encloses an optical encoder stack and uses size code 071 with stator winding code 0300, which provides predictable resistance and inductance values during inertia matching. Encoder technology remains optical for low quantization error, and the stator assembly matches motor length D to balance continuous torque with natural cooling capacity.