Product Description:

The MAC090B-1-JD-2HC/110-A-0 is an AC servo motor manufactured by Bosch Rexroth Indramat in the MAC AC Servo Motors series. Intended for closed-loop axis control on conventional analog drive amplifiers, the motor converts command currents into precise rotary motion for positioning tables, handling modules, and similar equipment in automated lines. The housing accepts an external axial blower so that continuous torque can be delivered over extended duty cycles common to packaging, printing, and material-handling stations.

The mechanical interface uses a centering diameter of 110 mm, which aligns the stator flange concentrically with the machine frame and helps keep radial runout within tolerance. Thermal control relies on axial surface cooling; fins on the stator are washed by external airflow to raise permissible current without exceeding winding limits. The blower that supplies this airflow operates from AC 230 V, allowing the cooling circuit to be fed from common plant utility power. Velocity feedback is provided through a resolver-based system augmented with tacho feedback, giving an analog speed signal for drive regulators that do not use digital encoders. Power conductors exit through a connector on side A, letting cable bends occur outside the thermal zone and simplifying right-hand mounting inside cabinets.

The motor is supplied with no blocking brake, so shaft holding must be handled by the drive or by an external mechanical lock during power-off states. As a motor for analog drives, its armature constants and feedback signals match amplifier cards that process continuous current and voltage loops rather than serial data. For speed observers, the built-in tacho generates 1.5 V per 1000 rpm, supplying a proportional voltage that can be filtered for ripple while still reacting quickly to acceleration. The tacho assembly is built to standard quality, maintaining specified linearity and phase shift without the tighter tolerances reserved for high-precision servo heads.