Product Description:

The AM8131-0J20-0000 is a three-phase permanent-magnet servo motor produced by Beckhoff as part of the AM Synchronous Servo Motors series. Designed for closed-loop drive systems, the unit converts drive current into precise mechanical rotation, allowing CNC stages, feeders, and secondary packaging stations to maintain programmed positions and velocities under varying loads. Its compact housing integrates well into distributed I/O machine designs and supports decentralized cabinet layouts. It is suited to coordinated motion tasks that depend on stable speed and position feedback during repeated operating cycles.

The motor uses a flange diameter of 72 mm, enabling direct attachment to gearheads or mounting plates with matching pilot bores. Power and signal lines are routed through a rotatable angular connector or terminal box, so the cable exit direction can be aligned with machine cable ducts without twisting the motor housing. Position and revolution data are supplied by an OCT multiturn encoder, giving the drive controller absolute rotor information over many revolutions for a homing-free startup. For applications that hold the load with control torque or external clamping devices, the motor is supplied without a holding brake. Motion is transferred through a smooth shaft, allowing force-fit couplings to be placed along the journal.

An overall length category of 1 keeps the motor stack short, which is useful where installation space is limited and low rotor inertia is preferred. The winding designation J identifies the electrical winding used with compatible Beckhoff AX series drives. This unit is the Standard version, so it uses the default insulation, bearing, and lubrication arrangement for this motor type. Its classification under the Synchronous Servomotors family indicates synchronous operation between the rotor field and the stator field across the speed range.