Product Description:

The MAC025A-0-WS-4-E/040-B-1/WI671LV is a brushless AC servo motor manufactured by Bosch Rexroth Indramat as part of the MAC AC Servo Motors series. Within an automation cell, this motor converts drive current into controlled rotational motion so that indexing tables, pick-and-place mechanisms, and similar loads can follow precise speed and torque commands. It is designed to operate with analog servo amplifiers from the same manufacturer, providing a compact electromechanical actuator for medium-duty positioning tasks on machine tools, printing lines, and general factory equipment. Its brushless design also supports low-maintenance operation in applications that require frequent starts, stops, and directional changes.

Thermal management relies on natural convection, allowing installation where separate forced-air equipment is not used. The stator uses a WS winding whose electrical characteristics allow the connected amplifier to reach rated current without excessive copper loss. A compact mechanical envelope is maintained by the frame size 025, while the A length keeps the housing short for space-limited machine layouts. Rotor position is reported through an incremental encoder with standard mounting, giving the drive high-resolution feedback for closed-loop positioning and repeatable speed control. This arrangement helps the motor maintain stable motion during continuous cycling and short indexing moves.

For load holding, a standard blocking brake engages automatically when supply power is removed, helping prevent back-driving on vertical or offset axes. Speed regulation can also use tachofeedback with an incremental or absolute encoder, which supplies an analog velocity signal in parallel with the main feedback channel. Incoming power is routed through a connector on side B, keeping power wiring separated from the feedback end for a cleaner harness layout. Classified as a motor for analog drives, this model pairs directly with legacy MAC regulators that issue sinusoidal current commands rather than digital PWM vectors. This control format makes the unit suitable for existing machine platforms built around analog motion architecture.