Product Description:

The MAC112B-0-LD-4-C/180-A-0/WI522LX/S003 is manufactured by Bosch Rexroth Indramat as part of the MAC AC Servo Motors series. It is an AC servo motor intended for analog drive systems in industrial automation, where it converts drive commands into controlled mechanical rotation for positioning tasks. The unit supports tachometer and encoder feedback so that analog controllers can regulate speed and position precisely. This arrangement suits machine axes that require closed-loop motion control without using a digital fieldbus. In older automation platforms, this type of motor is often paired with external amplifiers that process feedback continuously and correct speed changes caused by varying loads.

The motor uses a centering pilot of 180 mm, allowing rigid flange alignment with large gearboxes and machinery frames. Heat generated in the stator is removed by natural convection, so the housing fins must remain exposed to permit continuous airflow without forced cooling hardware. Under rated excitation, the rotor reaches 2000 rpm, a speed that fits many transfer lines and packaging axes that still rely on analog velocity loops. Power leads exit through a connector on side A, which can simplify cable routing when the drive cabinet is mounted at the same end of the axis. An internal tacho generator delivers 3 V/1000 rpm, giving the drive a proportional voltage signal that mirrors actual shaft speed during closed-loop regulation.

Because the motor has no holding brake, vertical loads must be secured by external mechanical locks or continuous motor torque during idle states. The stator winding code is LD, which corresponds to the resistance and inductance values expected by compatible MAC analog drives. Rotor diameter and stack length combine into size 112, while motor length index B keeps the overall body length moderate for retrofits in existing frames. The incremental position channel is provided by an incremental encoder mounted in the standard housing, and the accompanying tacho feedback supports stable speed monitoring across the operating range. This feedback arrangement allows the control loop to observe shaft movement directly instead of inferring it only from the commanded output.