Product Description:

The MSK103A-0300-NN-S1-UG0-NNNN is a servo motor manufactured by Bosch Rexroth Indramat for the MSK IndraDyn S Synchronous Motors series. As a closed-loop drive element, the unit converts electrical power from an IndraDrive controller into controlled mechanical rotation for indexing tables, pick-and-place actuators, and other precision automation axes. Its brushless construction supports fast response during repeated start-stop cycles while the integrated encoder helps maintain accurate position feedback. This combination allows stable torque delivery and repeatable motion in automated equipment that operates over long duty cycles.

The motor housing follows a standard design that matches the 103 mm frame designation, while the axial dimension is limited to length code A, which helps when installation space is restricted. Heat generated by the stator windings is removed by natural convection, so no external blower or liquid circuit is required. Position data is returned over the Hiperface interface, produced by an internal encoder that provides 128 signal periods per mechanical revolution. The sensing principle is optical, and the measuring range is single-turn, so the drive receives absolute shaft position information within one revolution and can maintain accurate speed and position control under changing loads.

Connection flexibility comes from the feedback plug, which is mounted on a rotatable through 240° flange to simplify cable routing in confined machine spaces. The stator winding uses code 0300, matching the electrical characteristics expected by compatible IndraDrive amplifiers. Because the unit is supplied without a holding brake, vertical or suspended loads may require external holding force when power is removed. Torque is transmitted through a plain shaft, which is suited for standard clamp couplings used on precision servo axes.