Product Description:

The 103H7126-0710 is a hybrid stepping motor manufactured by Sanyo Denki within the StepSyn Stepping Motors series. The unit converts discrete drive pulses into incremental shaft rotation, supporting open-loop position and speed control in indexers, pick-and-place stages, and other automated equipment. Its coil geometry and permanent-magnet rotor produce repeatable torque steps, allowing the motor to control motion without a feedback device.

A holding torque of 1.27 N·m maintains the load position when the coils are energized, while the rated phase current is 3 A/phase. The winding has a phase inductance of 2.2 mH/phase and a phase resistance of 0.9 Ω/phase; these values affect current rise time and help determine suitable chopper frequencies. Motion granularity is governed by a full-step angle of 1.8°, so 200 command pulses rotate the shaft through one mechanical revolution. These electrical characteristics support controlled acceleration in semiconductor tooling, labeling machines, and light gantry axes using compatible two-phase unipolar drives.

The mounting dimensions follow a NEMA 23 pattern. The square front face measures 56 mm across, and a 38.1 mm pilot diameter centers the housing during installation. Four holes measuring 4.5 mm in diameter are positioned on a 47.14 mm pitch to secure the motor to a mounting bracket. The housing has a stack depth of 75.8 mm, helping limit the space required behind the mounting surface. The rotor inertia is 0.36 × 10⁻⁴ kg·m², allowing quick start-and-stop cycles when the motor is operated with its two-phase unipolar wiring arrangement. A ground-finished shaft with a diameter of 6.35 mm transmits torque to a coupling, pulley, or similar driven component. The assembly weighs 0.98 kg, which limits the additional load placed on linear slides and belt-driven systems.