AM3121-0201-0001 Beckhoff
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The Beckhoff AM3121-0201-0001 is a synchronous servo motor from the AM Synchronous Servo Motors series designed for compact drive technology. It features a 58 mm flange size, smooth shaft design, and a resolver feedback type. The motor includes a 24 VDC holding brake with a holding torque of 2 Nm.
Internal Product Review
The AM3121-0201-0001 is a Beckhoff synchronous servomotor for Compact Drive Technology with a standard configuration. Resolver, two-pole feedback and a smooth shaft support stable motion control and straightforward mechanical integration. A 24 V holding brake with 2 Nm holding torque stands out as a valuable feature for secure axis retention.
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Product Description:
The AM3121-0201-0001 is a synchronous servo motor manufactured by Beckhoff for the AM Synchronous Servo Motors series. Designed for precise rotary motion tasks, the unit interfaces with compatible servo drives to power axes in assembly machines, feeders, and small handling systems. It belongs to the Synchronous Servomotors product family and provides the dynamic response and position accuracy required in industrial automation cells. By generating controlled torque with a permanent-magnet rotor, it allows motion controllers to synchronize multiple stations without mechanical gearing. Electronic commutation regulates the magnetic field so the shaft can follow commanded speed and position profiles under changing loads.
A two-pole resolver supplies analog rotor angle information across one electrical revolution, and this feedback method tolerates elevated temperatures and vibration better than many optical encoders. Mechanical coupling uses a 58 mm square flange that centers the stator housing on machine plates and supports concentric installation. A smooth shaft eliminates keyseat stress concentrations, making it suitable for clamp-style couplings that favor low backlash. Static load security is provided by an internal brake that can hold the rotor with 2 Nm of braking torque, preventing drift during power loss or emergency stops. The motor has overall length code 1, which indicates the shortest stack length offered for this frame and reduces the required installation depth. This compact housing is useful where the motor must fit near closely spaced tooling, guards, or adjacent machine axes.
The brake coil operates from a dedicated 24 VDC supply, allowing the control circuit to release or engage the brake without energizing the main stator windings. The holding brake supports vertical or intermittent-duty axes that must remain fixed during faults or planned shutdowns. Beckhoff identifies the motor as compatible with Compact Drive Technology, pairing it with panel-mounted servo terminals that share DC bus power. This arrangement reduces the amount of separate drive hardware required around small automated axes while retaining closed-loop motion control. The Standard version uses the baseline configuration for this motor type without special winding or sealing options. Its resolver feedback remains available while the brake is engaged, allowing the connected control system to monitor rotor position before motion resumes.
