Product Description:

The 103H7523-8051 is a two-phase hybrid stepping motor manufactured by Sanyo Denki for the StepSyn Stepping Motors series. It converts timed pulse signals from a drive into incremental shaft motion, allowing machinery to index, clamp, or dispense with repeatable accuracy. Because the motor holds each commanded position without sensors, it is suited for compact pick-and-place modules, small conveyors, and tabletop robotics where closed-loop feedback is unnecessary.

A phase current of 1.5 A per phase is the maximum continuous winding excitation that the power stage must supply. When fully energized, the stator develops a holding torque of 1.568 N·m, which helps maintain the load position between command pulses. Each full step advances the shaft by 0.72° per step, providing fine incremental control. Copper losses are affected by a phase resistance of 1.4 Ω per phase, so the drive must regulate winding current to limit thermal rise during low-speed operation. The winding inductance is 5.4 mH per phase, which affects how quickly current rises after each switching command. This electrical response must be considered when selecting drive settings and pulse rates for the intended operating speed.

Rotor inertia is 0.423 × 10⁻⁴ kg·m², allowing quick acceleration while helping smooth small variations during microstepping. The motor has an overall length of 85.8 mm and a 60 mm square frame, allowing the housing to align with metric mounting patterns that use four 4.5 mm-diameter holes around a 36 mm pilot. The assembly weighs 1.1 kg, so lightweight linear stages can carry it without requiring unnecessarily large support bearings. A single 8 mm-diameter shaft extends 15 mm beyond the front face and can accept a suitable coupler or pulley. At the rear, 305 mm UL1430 AWG24 lead wires provide the electrical connections between the motor windings and the stepper drive.