Product Description:

The MSK050B-0450-NN-M1-UG1-NNNN is a synchronous servo motor produced by Bosch Rexroth Indramat within the MSK IndraDyn S Synchronous Motors series. Designed for industrial automation axes, this motor converts command currents from a Rexroth drive into proportional torque and velocity, enabling precise positioning, coordinated motion, and tightly controlled cycle times in packaging machines, pick-and-place gantries, and material-handling robots during repeated motion cycles. It houses an optical feedback system for closed-loop control of position and speed, and its electrically released brake secures vertical axes during power loss.

Thermal management relies on natural convection, so heat is transferred from the stator surface to ambient air without forced airflow, which helps reduce maintenance needs and operating noise. The electromagnetic system uses winding code 0450, a configuration that balances torque production and current demand for medium-inertia loads. An integrated holding brake rated at 6 Nm locks the rotor whenever supply is removed and disengages automatically when the brake coil is energized, preventing drift on suspended axes. Rotor position is measured through a Hiperface-compatible interface, and the drive reads the bidirectional data channel over a single hybrid cable. Internally, the optical sensor generates 128 signal periods per revolution, allowing the controller to interpolate fine increments for smooth velocity loops and accurate positioning.

The motor’s service connections are simplified by a 240° rotatable encoder plug that can be turned in set increments to align with available cable space and reduce strain during installation. Because the sensing element is multiturn absolute, the stored count preserves angular information across power cycles, which supports quick restarts on machines with limited homing time. The frame code 050 keeps the outside diameter small, which is useful when several axes are mounted side by side. A hardened plain shaft transmits torque through clamp or keyless couplings and, by eliminating key slots, helps minimize concentricity errors that could generate vibration.