AM8542-1E21-0000 Beckhoff
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The Beckhoff AM8542-1E21-0000 is part of the AM Synchronous Servo Motors series. It features an 87 mm flange size and a shaft with groove and feather key in accordance with DIN 6885. This synchronous servomotor comes with a 24 V holding brake and a holding torque of 9 Nm, and uses OCT multi-turn feedback.
Internal Product Review
The AM8542-1E21-0000 is a Beckhoff synchronous servomotor with increased mass moment of inertia, delivering very stable behavior in demanding axis applications. OCT multi-turn feedback and a rotatable angular connector support accurate motion control and clean installation flexibility. A 24 V holding brake with 9 Nm holding torque is a standout feature for secure position retention.
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Product Description:
The AM8542-1E21-0000 is a synchronous servomotor built by Beckhoff and assigned to the AM Synchronous Servo Motors series. The unit delivers closed-loop rotary motion for positioning tables, pick-and-place heads, and other automation axes that require fast acceleration and accurate speed control in packaging, handling, and assembly equipment. Its construction follows the standard version of the product line, providing an electric drive element that couples directly to machine mechanics while maintaining compatibility with Beckhoff drive controllers and common servo-controlled axis layouts.
The motor integrates a 24 VDC electromagnetic brake that is released when voltage is applied and engages during power-off conditions. Position feedback is delivered by an OCT multi-turn encoder, allowing the drive to know absolute shaft angle across multiple revolutions without battery support. A square 87 mm mounting flange follows IEC sizing, establishing a consistent bolt circle for gearboxes or direct machine frames. Electrical power and signal wiring exit via a rotatable angular connector or terminal box, so cable outlets can be oriented to suit cabinet layouts. The rotor has an increased mass moment of inertia, which helps the servo handle larger load changes with stable motion during demanding cycles.
The integrated brake produces 9 Nm of static torque, which is sufficient to hold moderate vertical loads when the drive is de-energized. Shaft output is configured as a shaft with groove and feather key manufactured to DIN 6885, simplifying the connection of couplings that rely on keyed engagement. The overall length conforms to size code 2, giving the motor a balanced profile between torque density and enclosure depth in installations that need a moderate package size. The motor uses winding code E, which matches Beckhoff drive stages that can supply the required current and voltage range.
