Product Description:

The MAC112B-0-LD-3-C/130-A-2/S013 is an AC servo motor manufactured by Bosch Rexroth Indramat as part of the MAC AC Servo Motors series. Classified as a motor for analog drives, it receives velocity and torque references from legacy controllers and delivers regulated mechanical power to conveyors, gantry axes, and similar motion stages in automated plants. By integrating a blocking brake and tacho generator, this unit provides both static holding capability and real-time speed feedback, allowing closed-loop positioning without external transducers. This operating style is suited to machines that still use analog command structures and direct feedback wiring.

The electromagnetic design uses winding code LD, which indicates coil resistance and inductance suited to mid-range current ratings. Under nominal excitation, the rotor reaches 2000 rpm, a speed chosen to match standard gearbox ratios while keeping bearing loads within a normal operating range. Frame size 112 indicates the motor’s stator diameter, and the 130 mm centering pilot helps align the housing concentrically on machine plates. A heavy-duty blocking brake rated at 60 Nm is installed, so the shaft can remain stationary after power loss or during emergency stops. These features make the motor suitable for axes that need controlled motion during operation and secure holding when motion stops.

Cooling is done by natural convection, so the housing fins dissipate heat without fans or liquid circuits. Because airflow is passive, the installation should leave clearance around the motor surface so heat can escape effectively. The motor includes tacho feedback and a second shaft end; the feedback signal supports closed-loop speed control, and the additional shaft stub allows coupling to an external encoder when a separate position device is needed. Power conductors enter through a connector on side A, which can simplify cable routing along the machine frame. The internal tacho generator produces 3 V/1000 rpm, giving the drive a linear voltage signal that can be filtered directly by analog velocity loops for stable regulation at low speeds.