Product Description:

The MAC090A-0-ZD-2-C/110-A-1/8 is an AC servo motor built by Bosch Rexroth Indramat for the MAC AC Servo Motors series. Designed as a motor for analog drives, it converts commanded current from legacy controllers into controlled mechanical motion on factory axes, conveyors, or positioning tables. Its compact frame and permanent-magnet rotor suit medium-inertia tasks where closed-loop speed regulation is required, especially on standalone machine axes that cycle throughout the day. In automation lines, the unit works with analog velocity or current loops and delivers repeatable torque during routine positioning, indexing, and material-handling duty. This operating style fits equipment that still relies on established analog motion hardware.

The motor body is machined with a centering diameter of 110 mm, enabling direct flange alignment against standard mounting faces and helping keep radial runout within allowable limits. Heat generated by the stator is removed through natural convection, so no external blower or liquid circuit is necessary and surrounding hardware remains less crowded. Power lines terminate through a connector on side A, which simplifies cable routing when the drive is mounted on the right-hand wall of an enclosure. Under nominal excitation, the shaft runs at 1500 rpm, a speed that matches older analog velocity loops referenced to 50 Hz supplies. The ZD winding provides the resistance and inductance profile expected by the companion amplifier.

Speed feedback is generated by a mounted DC tachogenerator calibrated for 3 V/1000 rpm, and this signal lets the control loop correct velocity deviations within a few milliseconds. The presence of tacho feedback pairs with the series’ standard accuracy grade for positioning tasks that do not require a high-resolution encoder or absolute position data. A blocking brake is included to hold the load at rest when power is removed, preventing drift on vertical axes and helping retain axis position during stoppage. This braking function is useful where the axis must remain steady after motion ends. The analog control format also keeps signal handling consistent across supporting drive electronics.