MAC112D-2-FD-4-C/130-A-0/DI520/S005 by Bosch Rexroth Indramat

The MAC112D-2-FD-4-C/130-A-0/DI520/S005 is an AC servo motor produced by Bosch Rexroth Indramat for the MAC AC Servo Motors series. Classified as a motor for analog drives, it delivers commanded torque and speed to presses, printing sections, or palletizers that still rely on analog velocity loops. The unit uses the FD winding code, motor size 112, and a length D frame to accommodate the larger stator and rotor package.

During continuous operation, the motor can deliver 38.0 Nm of torque while drawing 56.0 A at standstill. That sustained output is matched to a nominal shaft speed of 2000 rpm, so its drive electronics can regulate power across a broad mechanical load range. Short duty peaks up to 260 A are tolerated, allowing rapid acceleration of loads coupled to the 0.0230 kg·m² rotor, whose inertia influences loop tuning. A torque constant of 0.760 Nm/A links current setpoints directly to torque generation. Heat created by these currents is removed by axial surface cooling, and the housing mounts on a machine face with a 130 mm centering pilot. Because no blocking brake is present, position holding under power-off relies on external measures, and the 59 kg mass should be considered when specifying such locks.

Auxiliary airflow is supplied by a blower rated at 115 V AC, which maintains cooling performance during low-speed operation. For motion feedback, the motor carries a shock-damped incremental encoder and can also accept tacho feedback or an absolute encoder, with a standard tacho that produces 3 V per 1000 rpm to satisfy older analog velocity loops. The stator windings present 1.8 mH of inductance and a resistance of 0.110 ? at 20 °C, and these values affect current ripple and drive sizing. A thermal time constant of 120 min describes the heating curve, and power enters through a connector on side A to simplify cable routing inside enclosures.