Product Description:

The MAC021B-0-WS-3-E/032-A-0 is an AC servo motor built by Bosch Rexroth Indramat for the MAC AC Servo Motors series. Developed for analog drives, the motor converts regulated current from a compatible amplifier into controlled torque and speed for light- to medium-duty machine axes. The paired drive can accept ±10 V command signals and adjust motor current to follow the requested motion. Permanent-magnet excitation, a compact stator, and low rotor inertia allow the motor to respond quickly to setpoint changes in pick-and-place modules, small packaging stations, and textile equipment. Its compact profile also supports installation where the available space around the machine axis is limited.

Heat is removed solely by natural convection, so ambient air must circulate freely around the housing fins. This cooling method eliminates the need for an external fan, reducing the space required behind the motor. The electromagnetic package carries the WS winding code, which corresponds to resistance and inductance values suited to compatible analog controllers. The motor has a frame size of 021 and a 48 mm flange width for alignment with suitable couplings and gearboxes. It is supplied without a blocking brake, so an external mechanism or drive-applied torque must hold stationary loads. Power leads exit through a connector on side A, allowing the cable to be routed toward the selected side of the machine frame without crossing the output shaft.

Position and speed information is provided through tacho feedback and a second shaft end. The DC tachometer supplies real-time speed feedback to the drive, while the auxiliary shaft stub can accommodate an external encoder or handwheel when the application requires an additional mechanical interface. The motor has motor length B, providing a longer active stack for greater continuous torque than the shorter model while retaining the same flange size. Its wiring arrangement follows the connection conventions used for compatible Indramat drive equipment, which simplifies integration with the appropriate motor and feedback cables. The mounting holes align with matching machine brackets and IEC-compatible gearboxes, reducing the need for custom adapter plates during installation.