AM8021-5BH1-0000 Beckhoff
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The Beckhoff AM8021-5BH1-0000 is part of the AM Synchronous Servo Motors series and features a 58 mm flange size with a shaft that includes a groove and feather key. It is equipped with a 24 VDC holding brake that delivers 2 Nm of holding torque and offers 24-bit OCT multi-turn feedback. This synchronous servomotor comes with a rotatable angular connector or terminal box and achieves a Safety Integrity Level of SIL 2.
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Product Description:
The AM8021-5BH1-0000 belongs to the AM Synchronous Servo Motors series produced by Beckhoff. It is a compact rotary servomotor intended for closed-loop motion axes in industrial automation, where precise speed and position control are required to coordinate tooling, handling, or packaging stations. Integrated feedback allows the paired drive to monitor rotor position continuously during indexing and speed-controlled operation. This supports repeatable motion in compact machine layouts where stable axis response is important.
The electromechanical profile centers on a holding brake that is energized at 24 VDC, so power-off clamping can be driven directly from standard control-cabinet supplies. Power and feedback leads exit through a rotatable angular connector, and a terminal box can be used when that option is selected, allowing the cable outlet to be aligned with local space constraints. Position data are returned through a 24-bit encoder that implements OCT multi-turn tracking, so the encoder retains position over up to 16,777,216 distinct revolutions without battery backup. Mechanical mounting follows an IEC flange of 58 mm, which provides a standardized pilot diameter for gearboxes or machine frames.
The integrated brake generates 2 Nm of static torque, which is enough to hold moderate inertial loads on vertical or intermittent-duty axes. The motor supports functional safety up to SIL 2, enabling it to participate in safety-related stop and speed-monitoring circuits when connected to a compatible certified drive. Shaft ingress protection relies on a radial sealing ring rated IP65, so dust and low-pressure water jets do not reach the bearings. A sealing air connection is provided to purge internal volumes when required by hygienic or abrasive environments. The keyed shaft transmits torque through a groove and feather key, helping maintain slip-free coupling. Magnetic characteristics follow winding code B, which sets the stator wire gauge and electrical resistance for this frame size while maintaining the series' standard thermal class.
