Product Description:

The AM8541-0E21-0000 is a synchronous servo motor produced by Beckhoff as part of the AM Synchronous Servo Motors series. Within an automation cell, it serves as a rotary actuator, converting stator currents delivered by a Beckhoff AX amplifier into regulated speed and torque for indexing tables, gantry axes, or packaging spindles. This standard version uses permanent-magnet excitation and is intended for closed-loop control where compact size and high repeatability are required. Integrated feedback supports accurate position tracking during speed changes and short indexing cycles.

The mechanical interface uses an 87 mm square flange, allowing the motor to bolt to ISO size-80 gearheads and machinery frames. Position information is delivered through an OCT multi-turn feedback system that keeps absolute angle data over 4,096 revolutions, eliminating homing after power cycles. A smooth shaft permits clamp couplings to transfer torque without key-induced play. The motor uses a rotor with increased mass moment of inertia, so it resists speed fluctuations when coupled to high-inertia loads. Internal copper layout follows winding code E, matching the stator resistance and inductance to mid-voltage servo amplifiers while preserving dynamic current rise.

The integrated brake engages at 24 VDC and supplies a static torque of 9 Nm, so vertical axes remain fixed during shutdown or an emergency stop. Connection hardware uses a rotatable angular connector, which can be turned before tightening to suit cable orientation inside a cabinet. With overall length code 1, the housing remains short and simplifies installation in machines that follow Beckhoff's Synchronous Servomotors mounting grid. The compact body also helps when mounting space is limited near guarding, transfer mechanisms, or machine frames.