AM8552-1J21-0000 Beckhoff
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The Beckhoff AM8552-1J21-0000 is part of the AM Synchronous Servo Motors series and features a flange size of 104 mm. It comes with a rotatable angular connector or terminal box for connection and an OCT multi-turn feedback type. This standard version motor has a shaft with groove and feather key designed to DIN 6885, and a holding brake rated at 24 VDC with holding torque ranging from 9 Nm to 20 Nm depending on length.
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Product Description:
The AM8552-1J21-0000 is a synchronous servo motor manufactured by Beckhoff within the AM Synchronous Servo Motors series. As a servo actuator, it converts electrical energy into regulated rotary motion for indexing tables, packaging axes, and other closed-loop industrial automation tasks. This type of motor is typically paired with a servo drive that regulates current, speed, and position in real time during machine operation. The model is delivered in the standard version and follows DIN 6885 shaft key conventions, so it can connect to couplings or gear stages without additional adapters. Its format suits automated equipment that requires repeatable motion and stable response over frequent duty cycles.
The square mounting flange measures 104 mm, providing the reference pattern for machine-side attachment. Rotor position is monitored by an OCT multi-turn encoder, enabling absolute position feedback over multiple revolutions and allowing startup without a homing cycle. Brake power is supplied by 24 VDC, which matches common control-cabinet voltage levels used in industrial systems. A J winding indicates the stator layout used for this motor and influences torque-speed behavior in matching drive systems. The motor is equipped with increased mass moment of inertia, which can support smoother speed regulation during cyclical disturbances and applications with changing load conditions.
Power and feedback lines exit through a rotatable angular connector or terminal box, allowing cable routing to suit different cabinet orientations. For static positioning, an integrated holding brake engages automatically when supply is removed. The brake provides 9 Nm to 20 Nm of torque, with the exact value depending on the selected overall length code 2 variant. Drive torque is transmitted through a shaft with groove and feather key, ensuring positive mechanical engagement while following the DIN 6885 key standard. This shaft arrangement supports secure torque transfer in systems that use keyed hubs, pulleys, or similar machine elements.
