AM8042-1F21-0000 Beckhoff
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The Beckhoff AM8042-1F21-0000 is a synchronous servo motor from the AM Synchronous Servo Motors series with a flange size of 87 mm and a shaft designed with a groove and feather key specified by DIN 6885. It features an OCT multi-turn feedback system and a 24 V holding brake with 9 Nm holding torque. The motor uses a rotatable angular connector or terminal box for connection.
Internal Product Review
The AM8042-1F21-0000 is a Beckhoff synchronous servomotor in a standard configuration, well suited for precise motion control duty. OCT multi-turn feedback supports accurate position tracking, while the rotatable angular connector or terminal box simplifies machine integration. The 24 VDC holding brake with 9 Nm holding torque is a standout feature for secure axis holding.
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Product Description:
The AM8042-1F21-0000 synchronous servo motor is produced by Beckhoff as part of the AM Synchronous Servo Motors series. Within an automation cell, this motor converts commanded current into precise rotary motion, enabling packaging stations, pick-and-place heads, or gantry axes to reach set positions with minimal following error. By matching the electrical conventions of Beckhoff servo drives and the mechanical outline expected on IEC-compliant gearboxes, the unit supports applications that demand high-bandwidth velocity control and quick stopping through an integrated electromagnetic brake.
A brake supply of 24 VDC powers the electromagnetic clamp so the shaft can be locked whenever the drive is disabled, preventing drift on vertical loads. Position feedback is delivered through an OCT multi-turn encoder, allowing the controller to track absolute position over multiple revolutions without a homing cycle. The mounting interface uses an 87 mm square flange, a dimension that matches many compact planetary gearboxes and keeps the shaft center height consistent across the machine frame. Power and signal conductors exit through a rotatable angular connector, allowing the cabling to be oriented to suit the cabinet layout. Under rated excitation, the brake holds the shaft with 9 Nm of static torque, securing tooling against inertial loads when the drive is disabled.
The keyed output shaft follows the DIN 6885 profile and uses a groove with a feather key to transmit torque without slipping while maintaining alignment with the coupling. Thermal and electrical behavior corresponds to winding code F, providing a predictable current-to-torque relationship when pairing the motor with a compatible inverter. The motor has an overall length code of 2, providing sufficient magnetic stack depth for the required power while keeping the enclosure depth moderate. Its compact housing can be mounted where axial clearance is limited, while the keyed shaft provides positive mechanical engagement with the connected load. The absolute encoder retains multi-revolution position information, allowing the controlled axis to resume position tracking after a normal power cycle without repeating a homing routine.
