Product Description:

The MAC025A-0-WS-4-E/040-A-1/WI652LV is a servo motor manufactured by Bosch Rexroth Indramat within the MAC AC Servo Motors series. It is intended for integration with external drive amplifiers, where it converts electrical commands into rotary motion for positioning axes, feeder mechanisms, and automated tooling in industrial automation. It operates in closed-loop systems where precise torque and velocity regulation are required across repetitive cycles. This operating role suits machinery that depends on repeatable motion from one production cycle to the next.

The motor uses the WS winding set, which sets its coil resistance and current profile for matched analog regulators. Its frame is A, and the magnetic stack length is 025, a combination that balances continuous torque and inertia for light to medium duty axes. Heat generated by the stator is removed through natural convection, eliminating the need for external blowers or liquid circuits. Because cooling is passive, the installation does not require auxiliary airflow devices around the motor body. Power conductors attach through a connector on side A, so supply cables can be routed along the machine’s left-hand face without crossovers in the cable tray. This layout also helps keep wiring clear of moving members near the front of the motor.

A standard blocking brake is fitted to clamp the shaft when the drive is disabled, helping prevent load drift on vertical axes. Rotor position and speed feedback can be handled through tacho feedback, an incremental encoder, or an absolute encoder interface options, while the built-in transducer is an incremental encoder with standard mounting for straightforward use with legacy controllers. As a motor for analog drives, the unit supplies sinusoidal back EMF that matches classical current-controlled servo loops. These sensing options support both velocity and position loops in the drive electronics, allowing stable speed control and repeatable stopping accuracy during operation.