Product Description:

The MAC025A-0-WS-4-E/040-B-0/WI671LV is an AC servo motor produced by Bosch Rexroth Indramat as part of the MAC AC Servo Motors series. Designed for industrial automation, the device transforms analog drive commands into controlled shaft rotation that can position or move mechanical loads with high repeatability. It serves as the rotary element in closed-loop axes for machinery such as automatic feeders, pick-and-place arms, or secondary packaging equipment, where precise speed and torque regulation are required for synchronized operations. Its layout is suited to applications that need stable response from a compact motor without adding separate cooling hardware.

Thermal management for this unit relies on natural convection, allowing the housing fins to dissipate heat without forced airflow or liquid circuits. The WS winding code indicates the electrical winding data used by a matched analog drive to supply torque across the working speed range. The motor has size A and a stack length of 025, which establish the compact frame proportions and active magnetic length. The unit has no holding brake, so external holding force is required whenever the drive is disabled and the axis can back-drive under load.

Power and feedback cabling are routed through a connector on side B, simplifying access when the motor is installed close to a machine frame. For commutation and speed control, the drive can evaluate tachometer feedback with incremental or absolute encoder signals, giving flexibility in the feedback arrangement used on the axis. The integrated sensing element for this unit is an incremental encoder with standard mounting, which produces count pulses aligned to the motor shaft for position loops that need fine resolution. Because the device is classified as a motor for analog drives, its feedback behavior, winding constants, and thermal layout are matched to current-controlled amplifiers that regulate torque by analog command voltage.