Product Description:

The MAC112D-0-HD-3-C/130-A-0/S021 is an AC servo motor built by Bosch Rexroth Indramat for the MAC AC Servo Motors series. It operates as a motor for analog drives, delivering controlled torque and speed to machinery that relies on continuous-signal amplifiers rather than fully digital controllers. By combining a permanent-magnet rotor with precise rotor-position sensing, the unit provides the velocity regulation needed in packaging stations, material-handling axes, and other automated equipment that require stable motion during changing load conditions. This type of motor is suited to applications where smooth response to command changes is important for consistent machine movement.

The motor body centers on a flange with a 130 mm locating diameter that aligns the housing to gearboxes and mounting plates without additional adapter rings. Heat generated in the stator is removed by natural convection, so no external blower or liquid circuit is required and surrounding airflow must remain unobstructed. Winding code HD is paired with a nominal shaft speed of 1500 rpm when the drive supplies rated frequency. The motor has no blocking brake, so vertical or overhauling loads must be secured by external holding devices whenever the system is de-energized. The length designation D indicates the fourth stator stack in the MAC112 family, adding magnetic depth over shorter versions without changing the frame cross-section. Because the cooling method is passive, the installation should leave enough open space around the housing for air movement.

Tachometer feedback is delivered through an internal generator that produces 3 V/1000 rpm, enabling analog velocity loops to sense real-time speed with minimal latency. The unit includes tacho feedback and a second shaft end, so auxiliary encoder hardware or belt-driven accessories can be attached opposite the load side. Power conductors terminate on a connector on side A, which helps when the motor is mounted close to a machine wall or other fixed structure. Frame size code 112 identifies the stator diameter used for this housing, and the tacho quality is standard for the series. The second shaft end also supports applications that need an additional mechanical connection point without changing the main output arrangement.