Product Description:

The MAC112D-8-HD-3-C/130-A-1 is an AC servo motor built by Bosch Rexroth Indramat for the MAC AC Servo Motors series. Intended for analog drive systems, this unit delivers precisely controlled torque and speed to automated tooling, material-handling axes, and assembly cells. It incorporates a standard blocking brake for load holding during power interruptions, which helps keep suspended or indexed loads from drifting at a standstill. A blower mounted to the left of the shaft moves cooling air across the housing so the motor can maintain stable operation during repetitive industrial duty cycles. That arrangement suits machines that require repeatable starts, stops, and holding behavior without adding a separate external brake assembly.

A centering diameter of 130 mm aligns the flange precisely with gearboxes or mounting plates, helping the motor seat accurately during installation. Under rated excitation, the rotor reaches 1500 rpm, a nominal speed that balances dynamic response with continuous torque output for medium-inertia loads. Heat is removed through radial surface cooling, and the auxiliary blower operates on AC 230 V, so standard plant power can run the fan directly. When the brake is engaged, it provides 45 Nm of holding torque to keep the shaft from turning until the drive reestablishes controlled motion. This combination supports steady thermal behavior and predictable speed control in applications that cycle frequently through acceleration and stopping.

Electrical power is routed through a connector on side A, which can simplify cable routing when the machine layout favors that connection side. The stator uses winding code HD, matched to the servo amplifier for the electrical behavior expected from this motor family. With a frame size of 112, the unit offers a larger magnetic section than smaller MAC models while staying within the D-length build. For velocity feedback, a tachogenerator on the second shaft end supplies 3 V/1000 rpm, giving the analog drive card proportional speed information for closed-loop regulation and steady response during changing loads. Because the speed signal tracks shaft rotation directly, the controller can correct deviations quickly during changes in process demand.