Product Description:

The MAC025A-0-WS-4-E/040-B-0/WI673LV is an AC servo motor positioned in the MAC AC Servo Motors series and manufactured by Bosch Rexroth Indramat. Classified as a motor for analogue drives, it converts ±10 V speed or torque commands from legacy controllers into controlled shaft rotation for positioning, indexing, or feed axes in machine tools and material-handling equipment. Within a drive system it delivers closed-loop torque that responds proportionally to command voltage, forming the electromechanical link between the power stage and the mechanical load.

Winding code WS identifies the stator coil impedance and allows the matching analogue drive to supply rated current without saturation. The physical envelope is defined by motor length 025 and frame size A; together these dimensions set the active iron volume and establish the continuous torque the machine designer can expect. Heat generated in the windings leaves the housing by natural convection, removing the need for external blowers in cabinets with adequate airflow. Power enters the unit through a connector to side B, so cable runs stay clear of gearbox flanges on side A and permit straightforward dress-pack routing on moving axes.

For speed feedback the unit is supplied with tachofeedback and an interface that can host an incremental or absolute encoder; this combination lets older analogue regulators process tachometer voltage while a digital control can still access position counts. The internal sensor variant is the incremental encoder with standard mounting, giving a defined pulse count per revolution that synchronizes with common drive boards. Application engineers should also note that the motor ships without a blocking brake, so static holding torque must come from the drive or an external clamp when vertical loads are involved. These features complement the dimensional and thermal characteristics described above, rounding out the performance envelope for consistent motion control.