AM8552-0F21-0000 Beckhoff
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The Beckhoff AM8552-0F21-0000 is part of the AM Synchronous Servo Motors series and features a smooth shaft design and flange size of 104 mm. It is equipped with a 24 V holding brake, supports a rotatable angular connector or terminal box, and has OCT multi-turn feedback. This standard version has a holding torque ranging from 9 Nm to 20 Nm depending on length and is characterized by increased mass moment of inertia.
Internal Product Review
The AM8552-0F21-0000 is a Beckhoff synchronous servomotor with increased mass moment of inertia and a smooth shaft. OCT multi-turn feedback and a rotatable angular connector support accurate motion control and straightforward integration. A 24 V holding brake stands out as a strong feature for secure positioning in demanding servo applications.
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Product Description:
The AM8552-0F21-0000 servo unit is manufactured by Beckhoff as part of the AM Synchronous Servo Motors series. It is a rotary actuator intended for fast, repeatable motion in automated production lines, where precise torque and speed regulation are required. By interfacing with Beckhoff drive controllers, the motor converts electrical commands into controlled shaft movement for conveyors, pick-and-place arms, and indexing tables. This arrangement allows the drive system to manage acceleration, holding behavior, and position control within a compact motor package.
Its electromagnetic brake circuit is energized with 24 VDC, so the holding mechanism can be supplied from a typical control voltage without an additional converter. Power and feedback cabling enter through a rotatable angular connector, and a terminal box can also be used when cable routing space is limited. Rotor position is reported through an OCT multi-turn encoder that retains absolute turn information after power loss, which reduces the need for repeated homing. The mounting interface uses a 104 mm square flange that matches common planetary gearheads and couplings. When the brake is engaged, the integrated 24 V holding brake secures the shaft with a static torque of 9 Nm to 20 Nm, depending on the overall length code.
This model belongs to the variant with increased mass moment of inertia, which helps support speed stability when the motor is paired with high-inertia loads such as large indexing tables. The motor uses a smooth shaft, which eliminates keyway stress concentration and supports clamp-style couplings while still allowing slip-fit assembly within the flange envelope. Electrical characteristics correspond to winding code F, which matches the motor's current and voltage profile to its thermal class and 2 overall length variant. The longer housing increases continuous torque without changing the flange footprint.
