Product Description:

The MAC025A-0-WS-4-E/040-A-0/WI673LV is an AC servo motor produced by Bosch Rexroth Indramat within the MAC AC Servo Motors series. Designed for analog velocity and torque loops, the unit converts electrical energy into controlled mechanical rotation for light-duty automation axes, indexing mechanisms, and other motion tasks that require consistent dynamic response. It interfaces directly with legacy MAC drive amplifiers, providing the actuator portion of a closed-loop system used in printing, packaging, and semiconductor handling equipment.

The motor carries the winding designation WS, which identifies a coil set matched to the current and voltage limits of standard MAC controllers. Thermal management relies on natural convection, so the housing must be installed where ambient airflow can remove heat without forced ventilation. Power is routed through a connector on side A, which sets the cable exit toward the drive cabinet and helps maintain bend radius and shielding inside machinery enclosures. Rotor position is supplied by an incremental encoder with standard mounting; it outputs phased square-wave signals that the analog drive uses for speed feedback and commutation timing. The motor has a length code of 025, which keeps the magnetic stack short to reduce mass and inertia for rapid acceleration.

Within the MAC frame range, this unit uses size A, giving it a compact flange for small gearheads or direct-coupled loads. Because the motor has no blocking brake, holding torque during power-off must be provided by external mechanics or the drive itself. The product is a motor for analog drives, so its electrical characteristics match current-mode amplifiers that use ±10 V command signals. The feedback arrangement supports tacho feedback, incremental, or absolute encoder compatibility, allowing use with different feedback schemes when supported by the control system.