Product Description:

The AM8531-0F20-0000 is a synchronous servo motor manufactured by Beckhoff as part of the AM Synchronous Servo Motors series. It converts electrical power into controlled mechanical rotation for indexing tables, pick-and-place heads, and other motion axes that require rapid acceleration and repeatable positioning. The motor is supplied as a standalone electromechanical unit for use with compatible Beckhoff drive controllers. Closed-loop operation allows the connected drive to correct position and speed deviations as load conditions change during each motion cycle.

Its mounting interface uses a 72 mm square flange, which fits common machine frames and gearbox faces. Power and signal leads exit through a rotatable angular connector or terminal box, allowing the cable direction to be set after installation. This arrangement is useful where guarding or nearby hardware limits the available cable path near the motor. Rotor position is monitored by an OCT multi-turn encoder, allowing absolute feedback over multiple revolutions during startup and operation. The shaft is a smooth shaft, so torque is transferred through friction-fit couplings instead of keyed connections. The motor is supplied without a holding brake, so external holding force or drive torque is needed when the axis must remain fixed at standstill.

The motor is built in the standard version. An increased mass moment of inertia rotor helps stabilize motion on axes with heavier reflected loads during speed changes. This rotor behavior can be useful on mechanisms with uneven load changes or intermittent indexing duty. Its electrical characteristics correspond to the F winding, which is intended for operation with compatible Beckhoff amplifiers. The compact housing uses length code 1, helping reduce axial installation space while retaining the higher-inertia rotor option.