Product Description:

The AM8021-0B20-0000 is a synchronous servo motor produced by Beckhoff and assigned to the AM Synchronous Servo Motors series. As a rotary actuator, it converts drive current from a matched amplifier into precisely controlled torque and speed. This allows coordinated motion of indexing tables, packaging machinery, and other servo axes in automated lines.

Field wiring is supplied through a rotatable angular connector, which can be pivoted to relieve cable strain along the machine frame and improve routing in confined spaces. Internal position measurement is handled by an OCT multi-turn encoder, giving absolute position data across multiple revolutions for startup without a homing move. The motor mates to gearboxes or load flanges with a 58 mm square mounting face, keeping the center distance consistent with common planetary gear ratios. It is delivered without a holding brake, so static load retention must be provided by the drive or an external clamp on vertical or safety-critical axes. The model is categorized as Standard within the AM family, indicating that it does not use auxiliary cooling channels or special inertia options.

The overall length code is 1, making this the shortest stator available in the 58 mm flange class and reducing the installed length inside protective housings. Output torque is transferred through a smooth shaft, which suits backlash-free clamping hubs or press-fit couplings where keyways are not required. Electrical behavior follows winding code B, which corresponds to the turns count and resistance values used by compatible servo inverters for efficient current matching. If cable routing rules do not permit the angled connector, the same winding is also available with a terminal box for rigid conduit entry while keeping the same mechanical envelope.