Product Description:

The MAC021B-0-WS-2-E/032-B-0/S001 is an AC servo motor built by Bosch Rexroth Indramat for the MAC AC Servo Motors series. Designed as a rotary actuator for precision axes, it converts drive current into controlled torque and speed in industrial automation systems. When paired with analog servo amplifiers, it closes the velocity loop electrically rather than through digital fieldbus commands, making it suitable for legacy or retrofit machinery that still relies on continuous-signal control. This arrangement is common in older machine platforms where the controller issues continuous reference signals and the amplifier manages motor response locally.

Heat dissipation is handled solely by natural convection, so cabinet layouts must leave free air channels around the housing instead of installing auxiliary fans. Rotor speed is monitored internally through tacho feedback, providing an analog voltage proportional to shaft velocity for the drive regulator. The frame is identified as size 021, a designation that corresponds to a compact stator diameter and low inertia suited for small tooling axes. Axial stack code B indicates a medium length within the series, allowing higher continuous torque than the shorter variant without extending installation depth excessively. The motor has no blocking brake, so mechanical clamping or static drive torque must hold vertical loads during power-off conditions.

The power leads exit through the connector on side B, which positions the plug parallel to the mounting face and eases routing when the motor is fixed against a machine bulkhead. As a motor for analog drives, it expects sinusoidal phase currents delivered by an external controller that interprets the tachometer signal. The electromagnetic winding is identified by code WS, a selection that balances resistance and inductance for moderate current demand while still achieving the torque associated with this motor length. The feedback signal lets the amplifier correct speed deviations as load conditions change during motion.