Product Description:

The AM8543-0H20-0000 is a synchronous servo motor manufactured by Beckhoff and supplied within the AM Synchronous Servo Motors series. It converts electrical energy into precise rotational motion for positioning axes, gantries, and other motion tasks in industrial automation cells that rely on closed-loop control. The motor’s design allows tight integration with Beckhoff drive amplifiers so that velocity, torque, and position can be regulated in real time for repeatable machine sequences. Because servo operation depends on continuous control response, this model is well suited for applications that require accurate starts, stops, and speed changes under varying load.

Electrical interfacing is handled through a rotatable angular connector or terminal box, giving two orientation options when routing power and signal conductors inside crowded cabinets. Position data is delivered by an OCT multi-turn feedback system, which counts multiple shaft revolutions so absolute position is retained after power loss. Mechanical coupling to gearboxes or direct-drive loads is simplified by the 87 mm flange, a common footprint that shares mounting bolts with other IEC-compliant motors. The unit is supplied without a holding brake, so static torque during power-off must be provided by an external brake or by drive torque. The motor uses an H winding, which sets the resistance, inductance, and thermal limits that the drive must observe when delivering current. This combination supports flexible cable routing and accurate position tracking without adding a brake assembly to the motor housing.

A higher kinetic energy capacity is built in through the motor’s increased mass moment of inertia configuration, permitting smoother speed regulation when driving loads with changing torque demand. The overall length code 3 indicates the stack height used for this frame size. The shaft has a smooth shaft design, allowing backlash-free clamp couplings or press-fit hubs where keyways are not desired. This unit is the standard version of the AM85 frame, so it follows the baseline option set for this motor family. The inertia layout can help stabilize motion in applications where the driven load changes speed frequently, while the smooth shaft supports compact coupling arrangements.