Product Description:

The MAC025A-0-WS-4-E/040-B-0/WI651LV is an AC servo motor produced by Bosch Rexroth Indramat for the MAC AC Servo Motors series. It is designed for analog drive controllers that require closed-loop velocity and position control. Typical applications include material handling systems, light machining equipment, and conveyor indexing mechanisms. The motor converts electrical commands from a compatible drive into controlled rotary motion while its feedback devices provide the signals needed to correct speed and position during operation.

The stator uses winding code WS, which corresponds to electrical characteristics and drive current ranges for this motor. A frame size of 025 establishes the motor housing diameter and mounting dimensions, while the A length code indicates the axial length of the motor. Heat is removed through natural convection, so the installation does not require an external blower or liquid-cooling circuit. Adequate clearance around the housing allows surrounding air to carry heat away from the motor during operation. The three-phase power lead exits through a connector on side B, keeping the front of the motor clear for coupling to the driven mechanism. This connector position can also simplify cable routing when the motor is mounted with its output shaft facing the machine assembly.

Position and speed signals are generated by an incremental encoder with standard mounting, which provides quadrature pulses and a zero-reference mark to the connected drive. The motor also supports tacho feedback with an incremental or absolute encoder, allowing the control system to process analog velocity feedback or digital position data. The unit is configured as a motor for analog drives, making its feedback signals suitable for compatible voltage-based control electronics. It has no mechanical holding brake, so an external clamp, mechanical lock, or drive-generated torque must retain the load when the axis is stationary. This arrangement is appropriate when the machine already includes a separate load-retention mechanism or when the driven axis does not move under its own weight after power is removed.