AM8542-0E21-0000 Beckhoff
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The Beckhoff AM8542-0E21-0000 is a synchronous servo motor in the AM Synchronous Servo Motors series. It features an 87 mm flange size and a smooth shaft design, with a rotatable angular connector or terminal box for connections. This standard version motor has OCT multi-turn feedback and provides a holding torque of 9 Nm using a 24 V holding brake.
Internal Product Review
The AM8542-0E21-0000 is a Beckhoff synchronous servomotor engineered with increased mass moment of inertia and a smooth shaft for stable axis performance. OCT multi-turn feedback and a rotatable angular connector support precise motion control and clean machine integration. A 24 V holding brake with 9 Nm holding torque is a strong advantage for secure position retention.
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Product Description:
The AM8542-0E21-0000 is a synchronous servo motor manufactured by Beckhoff for the AM Synchronous Servo Motors series. It converts drive commands into regulated torque and speed for positioning tables, pick-and-place heads, and feed axes used throughout industrial automation. When paired with a compatible Beckhoff drive controller, the unit supports precise closed-loop control where repeatable motion and fast cycle times are required. The feedback loop allows the drive to correct position and velocity errors as operating loads change.
Mechanical holding is provided by a brake powered with 24 V DC, allowing the controller to operate the brake during idle periods or safety stops. Power and feedback conductors exit through a rotatable angular connector or an optional terminal box, providing flexibility when cabinet space is limited. The adjustable connector orientation helps route cables around nearby machine structures, while the terminal box supports a fixed wiring entry. Absolute rotor position is supplied by an OCT multi-turn encoder, so homing routines are unnecessary after power loss. The motor mounts to machinery with an 87 mm square flange that matches common IEC interfaces. Its brake supplies 9 Nm of static torque to keep suspended or high-inertia loads stationary.
The design features an increased mass moment of inertia, which smooths speed regulation during load changes without requiring an external flywheel. For depth-restricted installations, the housing follows overall length code 2, preserving cabinet clearance while maintaining torque density. A smooth shaft simplifies the installation of compression couplings or friction hubs where keyways are unnecessary. Compression couplings can grip the shaft concentrically, supporting accurate alignment without requiring a keyed hub. Electrical behavior corresponds to winding code E, providing predictable current demand and back electromotive force when the motor is paired with a compatible Beckhoff amplifier.
