AM257S-0011 Beckhoff
Wake Industrial LLC is not an authorized distributor of this product.
The Beckhoff AM257S-0011 is part of the AM Synchronous Servo Motors series and features a flange size of 194 mm with a smooth shaft design. It includes a 24 VDC holding brake with a holding torque of 70 Nm and uses OCT single-turn feedback. This model is designed with an increased mass moment of inertia.
Internal Product Review
The AM257S-0011 is a Beckhoff synchronous servomotor built for servo axes, with increased mass moment of inertia that supports stable motion behavior. OCT single-turn feedback supports accurate position evaluation, and the 24 V holding brake adds dependable axis retention. A 70 Nm holding torque makes the AM257S-0011 a strong choice for demanding motion applications.
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Product Description:
The AM257S-0011 is a synchronous servo motor manufactured by Beckhoff and supplied as part of the AM Synchronous Servo Motors series. It is intended for closed-loop positioning and speed control in industrial automation, where accurate torque output and fast feedback help multiple machine axes stay synchronized. In automated machinery, it converts controlled electrical input into rotary motion that can be regulated for both speed and position without sacrificing repeatability under changing cycle conditions. This motor is suited to applications that need repeatable motion during indexing, transfer, and coordinated production sequences.
The motor’s power-off brake circuit is energized with 24 VDC, so the installation must provide this voltage on a dedicated line. Rotor position is reported through an OCT single-turn encoder, which supplies absolute angle information within one revolution and allows the axis to resume operation without a homing cycle after a power interruption. This feedback arrangement supports immediate commutation reference at startup and keeps the controller aware of shaft angle during normal motion. A mounting flange of 194 mm centers the frame on standard machine interfaces for rigid attachment. During static holding or emergency stops, the shaft provides 70 Nm of braking torque, and the output uses a smooth shaft so couplings or pulleys can be clamped without a keyway. The brake torque helps prevent unintended movement when vertical loads or high reflected inertia must remain stationary between cycles.
The motor includes a holding brake for securing the axis when the main drive is disabled. Its rotor has an increased mass moment of inertia, which helps smooth load fluctuations and supports stable speed on indexing tables and other applications with frequent dwell periods. The added inertia can also reduce sensitivity to brief load disturbances in applications that favor smooth rotation over extremely rapid acceleration. The electrical interface and feedback arrangement can be matched with TwinCAT drive controllers for synchronized multi-axis control. Within the Synchronous Servomotors range, this high-inertia layout suits axes that benefit from steady running behavior and controlled response during repeated starts and stops.
