103H8583-80B2 Sanyo Denki
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The Sanyo Denki 103H8583-80B2 is a 5-phase stepping motor from the StepSyn Stepping Motors series and features an 86 mm circular frame. It delivers a holding torque of 6.17 Newton-meters and has a step angle of 0.72 degrees per step. The motor weighs 3.5 kilograms and is rated at 1.5 Amps per phase.
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Product Description:
The 103H8583-80B2 is a five-phase hybrid stepper motor produced by Sanyo Denki for the StepSyn Stepping Motors series. Intended for incremental positioning in pick-and-place heads, indexing tables, and compact gantries, the unit receives pulse trains from a microstep drive. It translates those commands into precisely metered rotary motion, allowing automation controllers to hold or advance mechanical loads without using feedback sensors. This open-loop operating method supports repetitive movements when the motor and drive are properly sized for the connected load.
The motor supplies a static holding torque of 6.17 N·m, so the shaft can resist external disturbances while the windings are energized. Its five-phase winding configuration lowers torque ripple relative to two-phase models and promotes smoother microstepping. Each full command pulse moves the rotor by 0.72° per step, providing fine resolution for linear stages driven through belts or lead screws. Phase excitation requires 1.5 A per phase, which is compatible with common chopper drives and helps limit thermal drift. Copper loss is governed by a phase resistance of 2.5 Ω per phase, allowing drive voltage and acceleration capability to be calculated while safe operating temperatures are maintained. These electrical characteristics support controlled current delivery throughout acceleration, constant-speed travel, and holding periods.
A circular frame with a diameter of 86 mm allows direct mounting to many NEMA 34 brackets, minimizing the need for adapter hardware. Dynamic response is supported by a rotor inertia of 4.4 × 10⁻⁴ kg·m², keeping start-stop cycles responsive even when high pulse frequencies are commanded. The per-phase inductance is 15 mH per phase, which affects current rise time and the step rates achievable at a given supply voltage. Overall mass is 3.5 kg, adding stability to stationary installations while remaining suitable for moving-axis assemblies. The hybrid rotor combines permanent-magnet and toothed-reluctance principles to maintain accurate angular increments. Proper acceleration profiles help prevent missed steps when the attached load has substantial inertia or when the commanded speed changes rapidly.
