Product Description:

The MAC90B-0-ID-4-C/110-A-0/WI530/S01 is a servo motor built by Bosch Rexroth Indramat for the MAC AC Servo Motors series. It serves as a rotary actuator in analog drive systems, translating command voltages into controlled shaft motion for material handling equipment, indexing tables, and other automated stations that rely on accurate speed regulation and torque production. Its integrated feedback arrangement supports precise motion control in compact machine layouts.

A 110 mm centering diameter aligns the motor face with gearbox or machine flanges, helping keep radial runout low during installation. Heat released by the stator is removed through natural convection, so no external blower or liquid circuit is needed. The winding terminals are reached through a power connection on side A, which lets cable trays run parallel to the housing and simplifies access to the wiring area. Position information is captured by an incremental encoder, and velocity feedback is reinforced through the combined signal of a tacho and mounted encoder pair. Together, these signals provide fine-resolution increments for the drive and an analog tachometer voltage for older controller cards. The tacho element is the standard type, which supports compatibility with legacy MAC amplifiers.

The motor is supplied without a blocking brake, so vertical loads must be held by external clamping or by drive torque when power is removed. A 360° bidirectional reference adjustment lets the encoder zero be indexed in either rotation direction during setup when multiple axes share a common mechanical datum. Using a standard encoder mounting avoids custom brackets and helps limit spindle growth effects at higher temperatures. As a motor for analog drives, the unit maintains voltage-proportional speed behavior and works with proportional MAC controllers while also providing the precision benefits of digital incremental feedback.