Product Description:

Bosch Rexroth Indramat manufactures the MAC071A-0-OS-3-C/095-B-0/S001, a member of the MAC AC Servo Motors series. As a motor for analog drives, it receives proportional command voltages from analog amplifiers and converts them into controlled mechanical rotation, giving older motion platforms the speed and position accuracy needed for automated assembly lines and conveying equipment. The unit’s A-length housing keeps overall depth low, allowing the shaft to be coupled directly to gearboxes or pulleys in space-constrained enclosures common in retrofit automation projects.

The motor flange features a centering recess of 95 mm, providing concentric alignment between the stator housing and the machine frame to limit radial runout. Its nominal operating speed is 3000 rpm, which serves as the reference point for torque, efficiency, and tacho calibration. Heat produced by the winding is removed through natural convection, so no external blower or liquid circuit is required. Frame code 071 indicates the cross-sectional dimensions, while winding code OS indicates the electrical resistance and inductance pairings used with analog drive amplifiers. The motor has no blocking brake, so any load holding must be achieved through external mechanical restraint or continuous drive torque.

Electrical terminations are routed through a connector on side B, keeping power cabling opposite the driven load and simplifying chain routing along the machine frame. Tachogenerator feedback is supplied at 3 V/1000 rpm, allowing the drive electronics to monitor shaft velocity directly without digital scaling. The motor has tacho feedback and a second shaft end, so an auxiliary transducer or mechanical encoder can be added without changing the main feedback loop, which supports applications that need simultaneous speed regulation and external position verification.