Product Description:

The MAC025A-0-WS-4-E/040-B-0/WI668LV/S001 is a servo motor built by Bosch Rexroth Indramat for the MAC AC Servo Motors series. This model works with analog drive controllers to convert electrical command voltages into controlled rotary motion for machine tools, printing lines, and handling axes. Its electromagnetic package is optimized for medium power applications where precise speed and torque regulation are required, but digital bus communication is not necessary. This arrangement lets the amplifier regulate current while the motor delivers repeatable motion under changing load conditions.

The winding identifier WS indicates the stator turns ratio and the voltage constant used with this motor on standard three-phase analog drives. Frame size A gives the unit a compact flange suitable for light assembly machinery, while length code 025 corresponds to the active lamination height that supports continuous torque. Thermal management relies on natural convection, so heat is removed through the housing surface without fans or liquid jackets. Power conductors exit through a connector on side B, which helps route cables away from components mounted at the opposite end.

The motor has no holding brake, so vertical axes that need static load support must rely on external braking or drive torque when power is removed. For velocity control, the unit is equipped with tacho feedback and incremental or absolute encoder feedback, allowing the connected drive to process speed and position signals in a compatible format. Position information is supplied by an incremental encoder with standard mounting, which supports straightforward alignment with typical drive cards. The feedback arrangement supports both speed monitoring and position tracking in systems that still use an analog command structure. Classified as a motor for analog drives, the model integrates with legacy Rexroth transconductance amplifiers that use ±10 V commands and monitor tacho signals for closed-loop regulation.