Product Description:

The MAC071C-0-GS-3-C/095-B-0 is an AC servo motor manufactured by Bosch Rexroth Indramat as part of the MAC AC Servo Motors series. The unit is intended for analog drives, so torque is regulated directly by the drive amplifier’s current loop rather than by embedded electronics. Within automated machining cells and material-handling lines, it converts electrical energy into controlled rotary motion and provides the precision and acceleration required for positioning tables, pick-and-place arms, and high-speed spindles.

The motor frame uses size 071, which matches the mechanical envelope used with standard MAC mounting flanges. A longer active stack denoted by length C increases available continuous torque without changing the shaft height. Electrical characteristics are set by winding code GS, allowing the drive to reach rated current while keeping copper losses within limits. At a nominal speed of 6000 rpm, the rotor can maintain steady operation in continuous duty and support rapid traverse motion for machine axes. The centering diameter of 95 mm provides a precise pilot fit that aligns the stator housing to adjoining machinery and helps minimize runout. Heat produced in the windings is dissipated through natural convection, so no forced-air blower or liquid circuit is required when the motor is installed with free airflow around the housing.

Speed feedback and position referencing are handled by tacho feedback and a second shaft end. The mounted DC tacho generates a proportional voltage, while the auxiliary shaft permits an additional encoder or mechanical load coupling. Power conductors exit through a connector on side B, which simplifies cable routing in cabinets where the rear of the motor faces the supply raceway. The tacho delivers 1.5 V/1000 rpm, a linear signal that the analog controller uses to close the velocity loop and reduce overshoot during rapid reversals.