Product Description:

The MAC025A-0-WS-2-E/040-A-0/S004 is an AC servo motor built by Bosch Rexroth Indramat for the MAC AC Servo Motors series. Designed for analog drives, it converts current-controlled commands from a compatible amplifier into controlled rotary motion for positioning and speed-regulated applications. Its compact housing is suitable for feeders, small tool heads, textile spindles, and other automated equipment that requires smooth acceleration and repeatable movement. The motor works with an external drive that regulates current according to the commanded torque and uses the returned speed signal to correct changes caused by the connected load.

The stator uses winding code WS, which provides the electrical characteristics required by the corresponding drive controller. The motor has a frame size of 025 and a compact A length, allowing it to fit machine layouts with limited installation space. Heat produced by electrical losses escapes through the housing by natural convection, so the installation does not require an external blower or liquid cooling circuit. This passive cooling method also eliminates fan-related airflow requirements around the motor, although sufficient clearance should remain around the housing for heat dissipation. Power conductors reach the stator through a connector on side A, which supports short and orderly cable routing when the motor is mounted with that connection point facing the machine wiring path.

Rotor speed is monitored by integrated tacho feedback, which supplies an analog voltage proportional to rotational speed. This signal allows a compatible legacy controller to regulate velocity without relying on a digital encoder interface. The motor is supplied without a blocking brake, so an external locking device or another mechanical restraint must hold the load when power is removed. Drive-applied torque can maintain the shaft position while the system remains energized, but it cannot provide retention after electrical power is disconnected. The motor is therefore appropriate for axes that do not require an integrated brake or that already use a separate method of securing stationary loads.