Product Description:

The MAC025A-0-WS-4-E/040-B-0/WI674LV is an AC servo motor manufactured by Bosch Rexroth Indramat within the MAC AC Servo Motors series. Intended for analog drive schemes, it translates current commands into controlled rotary motion used in assembly robots, packaging machinery, and material-handling axes. The motor’s electromechanical design focuses on repeatable torque production and accurate velocity tracking, making it a practical actuator for precision automation cells.

The winding code WS identifies the stator copper density and insulation layout, matching the motor to converter stages that deliver its rated phase voltage. A motor length designation of 025 indicates a shallow magnetic stack, which lowers rotor inertia and supports frequent start-stop cycles. Heat generated in the windings is removed by natural convection, permitting cabinet installation without forced-air hardware. Power phases reach the stator through a plug positioned at connector on side B, so cables can exit parallel to the machine bed. Because the motor has no blocking brake, any vertical or suspended load must be restrained by active drive torque or an external mechanical lock during power-off conditions.

Closed-loop accuracy depends on the transducer set. The motor is configured for tacho feedback with an incremental or absolute encoder, allowing either velocity-oriented feedback or direct position sensing, depending on the selected control arrangement. The installed sensor in this unit is an incremental encoder with standard mounting, which streams differential square-wave pulses for analog velocity and position regulators. A frame size of A keeps the cross-section compact for space-limited machines while still supporting the torque range of the series. As a motor for analog drives, it connects directly to classic Indramat controllers that use analog ±10 V reference inputs.