Product Description:

The MAC025A-0-WS-4-E/040-B-0/WI656LV/S001 is an AC servo motor built by Bosch Rexroth Indramat for the MAC AC Servo Motors series. It converts electrical energy into regulated rotary motion for position or velocity loops and is applied to material transfer stations, indexing tables, and compact tooling axes within automated machinery. Its compact format supports controlled motion where repeatable response and efficient use of installation space are important.

Thermal management relies on natural convection, so heat leaves the housing without auxiliary fans and the motor can be mounted in enclosures where forced airflow is unavailable. The electromagnetic design follows winding code WS, a winding variant that sets resistance and inductance for the matching analog amplifier and establishes the voltage constant used by the drive. Incoming power is fed through a connector on side B, allowing cable runs that keep the feedback side uncluttered and simplifying right-angle cabinet layouts. The unit is supplied without a blocking brake, so external clamping or drive torque must hold the load when power is removed. Feedback cabling can carry tacho feedback, incremental encoder, or absolute encoder signals, giving the controller both speed and position information for closed-loop regulation.

For installations that need only incremental sensing, the shaft already carries an incremental encoder with standard mounting, avoiding custom flanges and simplifying fitment in existing machine layouts. The motor length code 025 shortens the magnetic stack to minimize rotor inertia in light-duty axes, while the frame size letter A sets the mounting pitch and shaft diameter used for this motor size. As a motor for analog drives, it interfaces directly with voltage-controlled or current-controlled amplifiers rather than digital fieldbus inverters, which makes it suitable for legacy systems that retain analog motion hardware.