Product Description:

The MSK040B-0450-NN-S1-UG1-NSNN is a compact servomotor from Bosch Rexroth Indramat in the MSK IndraDyn S Synchronous Motors series. It is intended for axes that require precise position and velocity control in automated assembly cells, packaging machines, and material-handling stages, including indexing tables and pick-and-place units. By combining high-resolution feedback with an integrated brake, the motor supports repeatable starts, stops, and holding functions when power is removed. It can be paired with compatible Rexroth drive controllers in closed-loop motion systems that require stable torque across a broad speed range.

Thermal management is handled through natural convection, so the housing operates without external fans or liquid circuits and can be mounted in compact enclosures where airflow is limited. The stator uses winding code 0450, while the feedback section uses an optical scanning system that produces 128 signal periods per revolution for smooth low-speed motion and accurate interpolation by the drive. Communication is carried over the Hiperface interface, which transmits absolute position data and electronic motor data on a two-wire link. A permanent-magnet holding brake provides 4 Nm of static torque to secure vertical or indexing loads during standby.

The hybrid power and feedback connector is rotatable through 240°, allowing cable exits to be aligned with the machine layout without twisting the conductors. During energization, the brake is electrically released, so it engages automatically when supply voltage is removed. Position data are supplied in a single-turn format, which suits short-stroke axes that operate within less than one mechanical revolution. The motor uses size 040 with length code B, giving it a narrow frame that fits planetary gearheads or direct-drive couplings while keeping inertia low for fast acceleration.