Product Description:

The MAC025A-0-WS-4-E/040-B-1/WI652LV is an AC servo motor engineered by Bosch Rexroth Indramat within the MAC AC Servo Motors series. It serves as the motive element in closed-loop industrial axes, converting drive current into controlled rotational motion for positioning tables, pick-and-place heads, and packaging spindles. The motor is intended for integration with analog servo amplifiers that monitor velocity and position through external feedback loops. Its compact design allows it to provide controlled motion in machinery where installation space is limited. The motor converts current commands from the connected amplifier into proportional torque for accurate speed and position control.

Electromagnetic behavior is established by the WS winding code, which sets the resistance, inductance, and voltage constants used by compatible drive equipment. The motor has a frame size of 025, providing a compact mechanical envelope with low rotor inertia. Its A length uses a short active stack that supports responsive acceleration in lightweight positioning axes. Heat produced in the stator windings is removed through natural convection, so the motor does not require an external blower when surrounding airflow remains unobstructed. Power conductors are routed through a keyed connector on side B, simplifying cable routing when the housing is installed in a confined machine area. A 40 mm centering diameter aligns the motor accurately with a mounting plate, gearbox, or other driven component.

A standard blocking brake is fitted to clamp the shaft when control power is removed, helping maintain the position of vertical or indexing loads. Rotor position and speed are measured by an incremental encoder with standard mounting, which supplies high-resolution pulse signals to the controller. These signals allow the connected amplifier to correct motion errors and maintain stable operation as the mechanical load changes. Because the motor is intended for analog drives, its electrical interfaces use voltage-based command and feedback signals rather than fieldbus communication. This arrangement permits direct connection to compatible servo regulators that process analog commands, tachometer feedback, and incremental position information. The integrated feedback arrangement supports closed-loop speed regulation and accurate positioning without requiring a separate externally mounted measuring device.