Product Description:

The MAC025A-0-WS-4-E/040-A-1/WI670LV is part of the MAC AC Servo Motors series manufactured by Bosch Rexroth Indramat. This compact servo motor converts electrical power into regulated rotational motion for tooling stations, conveyor heads, and pick-and-place axes in automated systems. Integrated rotor position sensing enables closed speed and torque loops, while the low-inertia design allows machinery to reach commanded speeds quickly during high-cycle production. The compact housing also supports installation in automated equipment where available motor space is limited.

This model carries the WS winding code, which indicates the stator turns ratio and the voltage constant expected by the drive electronics. Heat is removed by natural convection, so the motor can be mounted in free air without external blowers or liquid-cooling equipment. The power leads exit through a connector on side A, simplifying cable routing when the motor is installed near other machine components. The motor uses a size 025 frame, providing a compact flange pattern suited to light-duty gearboxes and small machine axes. Its active magnetic stack has a length A configuration that keeps the motor mass and moment of inertia low for responsive acceleration. These proportions also reduce the space needed around the motor while maintaining access to the power and feedback connections.

A standard blocking brake is incorporated so the shaft can hold position when the drive is disabled, preventing unwanted movement on vertical or externally loaded axes. Closed-loop speed monitoring is supported through tacho feedback, which supplies the external controller with a signal corresponding to rotor velocity. Position information is provided by an incremental encoder with standard mounting, allowing the controller to track shaft movement during operation. Because the unit is intended for analog drives, commutation and current regulation occur in the external amplifier rather than in electronics integrated into the motor housing. The separate feedback channels allow the amplifier to correct speed and position errors as operating loads change. The brake provides stationary holding capability after controlled motion has stopped, while the encoder continues to support accurate movement whenever the drive is active.