Product Description:

The MAC090B-0-PD-3-C/110-A-1 is an AC servo motor manufactured by Bosch Rexroth Indramat and supplied in the MAC AC Servo Motors series. Designed for integration with analog servo drives, it produces controlled torque and speed for industrial positioning tables, indexing stations, and auxiliary processing tools. Its electromechanical layout follows a legacy analog command structure, making it suitable for mature automation cells. This arrangement allows the connected amplifier to regulate acceleration, running speed, and stopping behavior with feedback taken directly from the motor.

The motor’s centering spigot measures 110 mm, providing precise seating in compatible flanges and keeping the stator air gap concentric. Heat is removed only by natural convection, so installation must allow free airflow around the housing to preserve winding life. A combined sensor arrangement of tacho feedback and a second shaft end supplies an analog speed signal while leaving the rear stub available for mechanical encoders or couplings. At a nominal speed of 1500 rpm, the rotor frequency aligns with standard 50 Hz drive systems, giving predictable velocity scaling. The tacho generator outputs 3 V/1000 rpm, furnishing the drive with a proportional voltage that simplifies closed-loop speed regulation without digital processing.

The PD winding designation indicates the resistance and inductance set matched to the current filters used in legacy analog amplifiers, allowing fast current rise without saturation. A standard blocking brake is integrated to hold the load when the system is de-energized, eliminating the need for external clamps on vertical axes. Power conductors exit through a connector on side A, so the cable loop follows the motor body rather than crossing the shaft line. The side-mounted connection also helps keep wiring clear of couplings and rotating components at the shaft end. Velocity accuracy is further supported by the standard tacho quality classification, which limits ripple in the feedback voltage and keeps speed deviations within the tolerance band required by conventional analog regulators.