Product Description:

The AS1050-0120 is a hybrid stepper motor engineered by Beckhoff for precise incremental motion in automated test stands, small gantries, and metering pumps. Belonging to the AS Stepper Motors series, it translates pulse trains from a drive into fixed angular steps, enabling synchronized movement without mechanical feedback devices. A compact housing, a weight of 1.00 kg, and a rotor inertia of 0.36 kg cm² allow direct mounting in space-constrained machines while balancing quick acceleration with stable speed control.

The motor advances the shaft with a step angle of 1.8°, so 200 command pulses yield one full revolution and simplify open-loop position calculations. During hold conditions, the frame can resist external torsion with 1.2 Nm of holding torque, which helps prevent back-driving at rest. Continuous winding excitation is supported by a rated current of 5.0 A, and copper losses at that load correspond to a rated power of 27.5 W. The laminated core produces the magnetic field with a coil inductance of 0.86 mH, and this low value allows rapid current rise so the motor tracks high-frequency pulse trains without lag. Axial thrust is limited to 15 N, matching light lead-screw or belt transmissions, and a bearing life of 30 000 h is calculated for uniformly distributed duty cycles.

For feedback-assisted positioning, an incremental encoder delivers 1024 increments per revolution through a push-pull output stage that connects through a 5-pin M12 plug. The power windings terminate on a 4-pin M12 socket, and the winding resistance is 0.28 Ω, which helps minimize voltage drop over modest cable lengths. Static sealing and dust guards provide an IP43 protection class that is suitable for clean indoor enclosures. Mechanical side loading can reach 123 N radial load at a 15 mm overhang without shortening the bearing rating, ensuring reliable operation when pulleys or couplings apply transverse force.