Product Description:

The MAC021B-0-WS-2-E/032-B-0/S004 is an AC servo motor designed by Bosch Rexroth Indramat as a member of the MAC AC Servo Motors series. This sealed rotary unit converts electrical commands from machine controllers into precise torque and speed that drive positioning tables, pick-and-place heads, and indexing stations found in automated production lines. Its permanent-magnet rotor, integrated feedback device, and plug-in power connection combine to form a compact electromechanical actuator that simplifies multi-axis layouts and, by eliminating belts or gearing in many installations, helps maintain repeatability while reducing maintenance downtime.

The motor is constructed without a blocking brake, so any static holding force must be supplied by the connected drive or external mechanics. Heat is removed through natural convection, allowing the housing fins to disperse thermal energy without auxiliary fans or liquid circuits. Rotor position is monitored via an attached tacho generator that provides tacho feedback, a feedback form well suited to velocity-loop regulation in classic drive topologies. The motor has length code B, giving the unit an intermediate stack height within the family, while size 021 indicates a compact flange diameter appropriate for light- to medium-duty axes.

Electrical power reaches the stator windings through a molded connector on side B, permitting straight-through cable runs along the rear of a machine frame. The electromagnetic circuit follows winding code WS, which sets the conductor gauge and turn count for the intended voltage constant and continuous current rating. When paired with a drive card configured for a motor for analog drives, the unit integrates seamlessly into legacy ±10 V command architectures. As part of the MAC AC Servo Motors line, it uses standardized shaft dimensions and feedback interfaces.