Product Description:

Bosch Rexroth Indramat manufactures the MAC025A-0-WS-4-E/040-B-0/WI671LV/S006. This unit is an AC servo motor in the MAC AC Servo Motors series and is intended for precision motion axes in packaging, assembly, and machine-tool environments. By converting controlled stator currents into repeatable torque, it lets automation controllers execute position, velocity, and torque profiles with high dynamic accuracy. That operating behavior is useful on axes that must start, stop, and reverse quickly while maintaining repeatable motion. The motor integrates into closed-loop systems that rely on external amplifiers and feedback devices to maintain commanded trajectories under continuously changing mechanical loads.

Winding code WS identifies the coil arrangement and resistance values used by the matching drive. Frame size A gives the motor a compact flange pattern, while length index 025 increases the active lamination stack for higher continuous torque without changing the cross-section. The longer active section helps the motor support continuous-duty operation while preserving a small mechanical envelope. Cooling is provided by natural convection, so no fan or liquid circuit is built in. The motor has no blocking brake, so the axis must rely on drive torque or an external clamp to hold position when power is removed.

Power leads terminate through a single connector on side B, which helps keep the motor cable clear of adjacent machine elements. The unit is a motor for analog drives, so it is intended for use with an external current regulator rather than an integrated inverter. For speed loop stability, the feedback assembly uses tacho feedback with an incremental or absolute encoder; the tachometer supplies real-time velocity data, while the digital tracks report shaft position. This arrangement supports speed regulation and position monitoring without requiring a separate external feedback package. In this version, the reference device is an incremental encoder with standard mounting, allowing direct connection to standard Indramat drive controllers.