Product Description:

The MAC112C-1-HD-3-C/130-B-0 is an AC servo motor produced by Bosch Rexroth Indramat as part of the MAC AC Servo Motors series. It is classified as a motor for analog drives, meaning it was designed for speed and torque control through analog command voltages rather than networked digital buses. Within automated machines, this unit converts the drive amplifier’s current into mechanical rotation for positioning axes, spindle drives, or similar motion tasks where closed-loop accuracy is handled by external control electronics.

The motor’s internal blower runs from a dedicated AC 230 V supply and forces air over the housing to support axial surface cooling, allowing continuous duty at rated load. A centering diameter of 130 mm aligns the flange to mounting fixtures while maintaining shaft concentricity. The motor uses the HD winding code, which corresponds to the coil resistance, inductance, and thermal constants for this 112-frame platform. Nominal speed capability reaches 2000 rpm, so the drive can follow analog velocity commands without entering field weakening. Power conductors exit through a compact connector on side B, which can simplify cable routing when the motor is installed with the B-side toward the cable track. The motor has no blocking brake, so holding torque during power-off must be supplied by external mechanics or by the drive itself.

Frame designation 112 identifies the stator size, and motor length C increases the active stack to raise continuous torque without changing the footprint. The feedback package includes tacho feedback and a second shaft end; the tachogenerator supplies a signal that is proportional to speed, while the auxiliary shaft end can support an additional encoder or load coupling. Tachogenerator calibration is rated at 3 V/1000 rpm, and its output meets the manufacturer’s standard tacho quality for analog velocity loops.