Product Description:

The MAC071C-0-GS-4-C-095-B-0-WI522LV is an AC servo motor manufactured by Bosch Rexroth Indramat within the MAC AC Servo Motors series. Built as a motor for analog drives, it converts electrical power into controlled mechanical motion for positioning axes, spindles, and actuators in industrial automation. By embedding tacho-based speed feedback and incremental position sensing, the unit forms a closed-loop pair with classic analog amplifiers, giving legacy machine tools or packaging equipment accurate velocity and position regulation without digital fieldbus interfaces.

A centering diameter of 95 mm aligns the housing precisely against mounting flanges, helping keep shaft concentricity within tolerance. The rotor can reach a nominal speed of 6000 rpm, allowing direct coupling to high-speed loads while still operating in the linear back-EMF range. Heat produced by copper losses is dissipated by natural convection, so airflow around the casing must remain unobstructed. Winding code GS indicates the wire gauge and turns that set current, voltage, and torque constants for this frame size. For velocity feedback, the integrated tachogenerator delivers 1.5 V/1000 rpm, supplying the analog drive with a proportional speed signal.

The power conductors exit through a connector on side B, keeping the cable bundle clear of gearboxes or couplings mounted on the opposite end. The motor has no blocking brake, so motion must be secured by an external brake or by maintaining drive torque when the axis is idle. Frame designation 071 indicates the stator diameter, and length class C gives the motor a medium rotor stack that balances continuous torque with compact depth. Standard-grade tacho quality, together with an incremental encoder on the rear shaft, supplies both coarse and fine feedback channels for analog regulators. This arrangement supports control systems that use separate speed and position signals.