Product Description:

The MAC090A-0-RD-4-C/110-A-0/WI522LX is an AC servo motor from Bosch Rexroth Indramat in the MAC AC Servo Motors series. Built for motion control systems, it turns electrical commands into rotary motion for positioning tables, feed axes, and transfer units. Integrated tachometer and encoder sensors provide velocity and position signals that keep the drive in closed-loop control as the load varies. Its feedback arrangement supports applications that require both stable speed regulation and repeatable axis positioning.

The motor uses a centering pilot of 110 mm, which aligns the flange precisely with gearboxes or machine frames and helps minimize runout. Electrical termination is arranged through a connector on side A, keeping power and feedback cables on the same face of the motor. Thermal control relies on natural convection, so no external blower or liquid circuit is required and heat is released through the housing during continuous duty. The unit is supplied without a holding brake, so load holding must be provided by an external mechanism or by drive torque when the axis is stopped. Keeping both connections on one side can also simplify cable routing in compact machine layouts.

The feedback package can be configured with tachometer feedback and an incremental or absolute encoder, allowing the motor to support either speed-sensitive operation or position-controlled axes. When incremental monitoring is used, the motor has an incremental encoder with standard mounting, which keeps the feedback arrangement straightforward. The control interface identifies the unit as a motor for analog drives; this allows direct use with legacy MAC amplifiers that issue voltage or current commands rather than digital fieldbus signals. The built-in sensor provides standard tacho quality, supplying a stable voltage proportional to speed for conventional velocity control loops. Because the tacho and encoder functions are integrated, the drive can monitor shaft behavior continuously during acceleration, steady motion, and stopping.