Product Description:

The MAC090B-0-PD-2-C/110-A-177 is an AC servo motor manufactured by Bosch Rexroth Indramat as part of the MAC AC Servo Motors series. Intended for precision positioning and velocity regulation in automated machinery, the model translates electrical drive commands into stable mechanical output without additional gear reduction. Its mechanical envelope follows standardized flange patterns, allowing straightforward mounting on compatible machine faces, and an integrated tachogenerator supplies real-time speed data so that analog control loops can correct deviations quickly during dynamic load changes.

During assembly, the motor centers on a 110 mm pilot diameter, ensuring concentric alignment with the driven machine element. Thermal energy is removed by natural convection, which keeps the housing within permissible temperature limits without external blowers or liquid circuits. Speed feedback is provided through tacho feedback, delivering an analog signal that the drive amplifier uses for proportional control. Under nominal load, the shaft rotates at 1500 rpm, a speed that matches many feed screws and indexing tables. Electrical power enters through a connector on side A, so all high-current conductors stay on the service side of the cabinet.

The unit is classified as a motor for analog drives, so it can be commanded directly by voltage-controlled amplifiers that were common before field-oriented digital platforms. The tachogenerator outputs 3 V/1000 rpm, giving the controller a linear reference for closed-loop speed error calculations across the operating range. Internal coils follow the PD winding designation, balancing inductance and resistance so that nominal current remains within typical amplifier ratings while still permitting fast torque rise. A standard blocking brake engages automatically when supply power is removed, maintaining axis position during tool changes or emergency stops.