Product Description:

The MSK071E-0203-NN-S1-UG0-NNNN is an IndraDyn S synchronous servo motor developed by Bosch Rexroth Indramat for the MSK IndraDyn S Synchronous Motors series. As a brushless AC unit, it delivers closed-loop rotary motion for positioning axes, pick-and-place modules, and similar automation tasks. It is intended for dynamic servo applications where accurate speed and position control are required. This makes it suitable for packaging equipment, small handling units, and other automated systems with frequent starts and stops.

This motor relies on natural convection to remove heat, so no forced-air or liquid hardware is required when it is mounted in free air. Position feedback is handled through the Hiperface serial interface; this digital link carries the high-resolution signals generated by the optical scale with 128 signal periods per mechanical revolution. Because the feedback element is a single-turn device, it reports one full revolution of absolute position, which is adequate for indexing tables and tool changers that home at power-up. A molded housing with an IP65 rating blocks dust ingress and water jets, allowing installation directly on machinery without extra covers. The motor has a size 071 frame, an E length, and winding code 0203, which provide a standard torque-speed combination within the MSK product line.

Encoder scanning uses an optical principle for low jitter, and the unit maintains rated accuracy across ambient temperatures of 0–40 °C. This feedback method supports smooth commutation and stable speed regulation during repeated motion cycles. A precision-ground plain shaft interfaces with couplings or pulleys when backlash must be minimized. Class F insulation, marked as 155, permits winding temperatures up to 155 °C during cyclic overloads without premature varnish failure. The design is supplied without a holding brake, so static load retention must be arranged through the drive or an external locking mechanism. It is suited to machine designs that use drive torque or a separate mechanical device to hold the axis at standstill.