Product Description:

Bosch Rexroth Indramat builds the MAC021B-0-WS-3-E/032-B-0 AC synchronous servo motor for machinery that relies on analog velocity and torque commands. The motor converts electrical power from a compatible drive into controlled shaft rotation for applications such as indexing tables, feeders, and small pick-and-place axes. Its compact form supports installation where available machine space is limited. Integrated speed sensing allows the connected drive to monitor rotation and correct deviations caused by changing loads.

The motor is supplied without a blocking brake, so the drive or an external locking device must provide holding force when power is removed. Heat generated by the stator windings is dissipated through natural convection, eliminating the need for forced-air ducts or liquid-cooling lines. The feedback package provides tachometer feedback and a second shaft end, allowing the drive to monitor motor speed while leaving an additional mechanical connection available. The motor size 021 provides a compact diameter suited to light- and medium-duty motion axes. Its motor length B provides the housing depth needed for the selected electromagnetic assembly without changing the intended mounting arrangement. Power conductors leave the housing through a connector on side B, which can simplify cable routing when that side of the motor remains accessible.

The motor uses winding code WS, identifying the coil arrangement intended for operation with compatible legacy analog drives. The winding characteristics allow the connected amplifier to regulate motor current while controlling torque and speed. As part of the MAC AC Servo Motors series, the unit uses the mounting and connection conventions associated with this product line. The second shaft end can accommodate an appropriate accessory or mechanical coupling when the machine arrangement requires one. Because cooling depends on surrounding air movement, the installation should leave enough open space around the housing for heat to escape. External load retention is necessary whenever the axis could move after drive power is disconnected because the motor does not include a blocking brake.