Product Description:

The 103H7123-0710 is a hybrid stepping motor manufactured by Sanyo Denki for the StepSyn Stepping Motors series. Within automated machinery, it translates digital pulse commands from an indexer or PLC into fixed angular increments, allowing repeatable position control without closed-loop feedback. This makes the unit suitable for light-duty linear stages, small dispensing pumps, and other stations where compact electromechanical motion is required.

The motor advances in discrete increments of 1.8°, so 200 command pulses complete one revolution and simplify microstepping calculations. A square flange measuring 56 mm on each side allows direct attachment to NEMA 23 gearboxes and brackets, while the body length of 53.8 mm keeps enclosure depth low. When both phases are energized, the motor can resist a static load with a holding torque of 0.78 N·m, which is adequate for most light indexing tasks. Each phase draws 3 A per phase, so a bipolar driver rated for that current provides full torque without overheating. Internally, the motor has two phases that shift flux in 90° electrical increments. This two-phase design is common for hybrid stepping motors and produces uniform detent forces.

The aluminum housing weighs 0.65 kg, easing installation on sliding carriages while adding enough mass to damp minor vibrations. A low rotor inertia of 0.21 × 10⁻⁴ kg·m² permits rapid acceleration when short move times are important. Output torque is delivered through a ground shaft with a diameter of 6.35 mm, making it compatible with standard couplings and timing-belt pulleys. The connection leads use a unipolar wiring scheme, providing the option of six-wire or four-wire drive topologies. Mounting is accomplished through 4.5 mm holes on a 47.14 mm pitch around a 38.1 mm pilot, ensuring concentric alignment between the motor and load without additional centering sleeves.