Product Description:

The 103H3215-5270 is a two-phase stepping motor produced by Sanyo Denki within the StepSyn Stepping Motors series. As a bipolar unit, it converts discrete pulse commands from a drive into incremental shaft motion, allowing positioning tables, pick-and-place heads, or small indexers to advance in fixed angular steps without feedback sensors. When integrated into industrial automation, its open-loop accuracy simplifies control electronics, while the motor’s small frame fits compact machinery.

The motor advances by 1.8 ° per step, so 200 pulses rotate the shaft one revolution and provide predictable linear travel when the motor is coupled to a lead screw. Each winding can be driven with up to 1 A per phase; this current creates the magnetic flux that produces a holding torque of 0.062 N·m when the rotor is energized and stationary. Electrical losses are influenced by a phase resistance of 2.6 Ω per phase, while an inductance of 0.8 mH per phase affects how quickly winding current changes in response to drive pulses. The motor has two coils wired for bipolar operation, and its rotor inertia of 0.016 × 10⁻⁴ kg·m² supports rapid acceleration without excessive overshoot.

A 28 mm square flange carries M2.6 × 0.45 mounting threads and centers on a 22 mm pilot for accurate alignment. The body has an overall depth of 50.3 mm, and the assembly weighs 0.2 kg, minimizing the load placed on lightweight axes. Its output shaft has a 5 mm diameter and provides a direct interface for compatible gears, pulleys, or couplings. AWG26 lead wires exit from the rear of the housing and have a minimum length of 300 mm, allowing them to reach nearby drive terminals without extensions. The bipolar winding arrangement supports compatible microstepping drives that use balanced electrical characteristics across both motor phases.