AM8533-1E20-0000 Beckhoff
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The Beckhoff AM8533-1E20-0000 is a synchronous servo motor from the AM Synchronous Servo Motors series with a 72 mm flange size and increased mass moment of inertia. It features a rotatable angular connector or terminal box for connection, has OCT multi-turn feedback, and a shaft with groove and feather key according to DIN 6885. This motor comes without a holding brake.
Internal Product Review
The AM8533-1E20-0000 is a Beckhoff synchronous servomotor with a very capable design for precise automation duty. Increased mass moment of inertia and OCT multi-turn feedback support controlled motion and accurate position retention. A rotatable angular connector and shaft with groove and feather key make installation and mechanical integration especially effective.
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Product Description:
The AM8533-1E20-0000 synchronous servo motor is built by Beckhoff and is part of the AM Synchronous Servo Motors series. Designed for closed-loop speed and position tasks, the unit drives rotary axes in automated assembly stations, pick-and-place gantries, and process equipment that require repeatable motion profiles. Its type designation places it in the AM85 frame class with the 33 rotor stack, giving the motor a mid-inertia layout for general industrial automation. Closed-loop operation allows the paired drive to correct for load changes and maintain commanded velocity or position during repeated cycles. It is intended for use with compatible Beckhoff servo drives that manage current, speed, and position in a coordinated control loop.
A rotatable angular connector or terminal box lets power and feedback leads be routed to suit available cabinet space and reduce cable strain. This arrangement is useful when the motor is mounted near guarding, gear units, or adjacent axes that limit cable exit direction. The motor mounts by a 72 mm square flange, which aligns the housing to common machine interfaces for this frame size. Position data is returned through an OCT multi-turn encoder, allowing the controller to retain absolute shaft position over multiple revolutions without a battery. Torque is transferred through a shaft with a groove and feather key, and the E winding gives the motor the electrical characteristics assigned to this version.
The rotor uses an increased mass moment of inertia, which helps stabilize speed when the load changes and suits axes with higher stored kinetic energy. The keyway follows DIN 6885, so standard keys and hubs can be used with matching mechanical parts. Housing length code 3 keeps the motor relatively compact while preserving the proportions of this frame size. The motor is supplied without a holding brake, so position retention during power-off conditions must be handled by the drive or by an external mechanical device. That arrangement is often used where the driven mechanism already includes a brake or a self-locking transmission.
