MAC090A-0-RD-2-C/110-A-0

MAC AC Servo Motors

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The MAC090A-0-RD-2-C/110-A-0 is an AC servo motor produced by Bosch Rexroth Indramat for the MAC AC Servo Motors series. It is intended for closed-loop positioning and speed control in analog drive systems, where a mechanical load is coupled directly to the rotor and motion commands come from current-regulated amplifiers. In industrial automation, this motor acts as the electromechanical interface that turns controller signals into rotary motion for tooling axes, transfer lines, or packaging equipment.

The motor seats against machinery frames with a centering pilot of 110 mm, providing radial alignment without shims. Heat is removed solely by natural convection, so airflow around the housing must be unobstructed to keep winding temperatures within permissible limits. Rotor speed is monitored through integrated tachofeedback, giving a proportional voltage that an analog drive can compare with the command reference. The three-phase supply reaches the stator windings through a connector on Side A, simplifying cable routing when the motor face is buried inside a mechanical assembly. Holding torque during power loss is not supplied, because a blocking brake is not present; designers must rely on external brakes or drive torque for static load retention.

The interface dimensions are finalized by the centering diameter that matches standard flange patterns, and the keyed shaft is driven by a dedicated power connector that maintains phase order at installation. As a motor for analog drives, its armature current follows the amplifier’s continuous loop, giving proportional torque without digital interpolation. Speed feedback accuracy aligns with standard tacho quality, a class sufficient for general motion duties where ±1 % velocity regulation meets process limits. Together these attributes let the motor integrate quickly into legacy or cost-sensitive control architectures while preserving stable thermal behavior and repeatable speed feedback.