Product Description:

Bosch Rexroth Indramat manufactures the MSK040C-0450-NN-M1-UP0-NSNN as part of its MSK IndraDyn S Synchronous Motors series. The unit is an IndraDyn S servomotor intended for closed-loop positioning and velocity control in automated machinery where compact size and consistent torque delivery are required. Its 040 frame and C length allow tight installation in multi-axis assemblies, and the motor forms a matched electromechanical element when paired with Rexroth drive amplifiers in packaging, printing, or handling systems.

The motor releases heat to the ambient air through natural convection, so no forced-air or liquid circuits are necessary in cabinets with adequate airflow. Mechanical power is transferred by a shaft with a keyway, giving positive engagement to pulleys or gearboxes without relying on friction fits alone. Position feedback is available as 128 signal periods per revolution, which helps minimize interpolation error during servo tuning. Data and supply lines for the sensor exit through a rotatable 240° connector, allowing cable routing to follow the cabinet layout rather than forcing a fixed orientation. Communication with the drive controller uses the Hiperface protocol, so absolute data and incremental tracks travel on the same pair of conductors, reducing wire count and connector size.

An optical scanning system inside the encoder generates the reference pattern and supports multiturn absolute feedback, which tracks mechanical revolutions even while the machine is powered down. Because the motor is supplied without a holding brake, applications that must lock position at rest need an external brake or static torque from the drive. The electromagnetic circuit follows the 0450 winding code, giving electrical characteristics that match the torque constant used for the 040 frame. This configuration is also used in standard and explosion-protected designs without changing the form factor.