103H8582-8011 Sanyo Denki
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The Sanyo Denki 103H8582-8011 is a stepping motor from the StepSyn Stepping Motors series with a holding torque of 4.02 Newton-meters and a step angle of 0.72 degrees per step. The motor features five phases, a rated current of 1.5 Amps per phase, and weighs 2.5 kilograms. It has a motor diameter of 86 mm and a motor length of 92.2 mm.
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Product Description:
The 103H8582-8011 is a hybrid stepping motor manufactured by Sanyo Denki for the StepSyn Stepping Motors series. This five-phase unit converts digital pulse trains into precise rotary motion, allowing controllers to index tooling or slides without closed-loop feedback. In automated handlers, printers, or miniature conveyors, its discrete step operation simplifies positioning while maintaining repeatability. The hybrid design combines permanent-magnet and variable-reluctance operating principles to support accurate incremental movement. Its pulse-driven operation makes the motor suitable for applications that require controlled starts, stops, and directional changes.
The motor develops a holding torque of 4.02 N·m, so the stationary shaft can resist moderate external loads without an external brake. Each electrical pulse rotates the rotor by 0.72° per step, permitting fine positioning resolution when microstepping is used. Electrical excitation is supplied at a rated current of 1.5 A per phase. The winding inductance is 10.6 mH per phase, which affects how quickly magnetic flux rises during rapid acceleration. The winding resistance is 2 Ω per phase, keeping copper losses predictable for thermal planning. The laminated stator is enclosed in a frame with a diameter of 86 mm, which accommodates NEMA 34 mounting accessories and compatible couplings. These electrical characteristics should be considered when selecting a driver and setting the phase-current limit.
The motor has a total mass of 2.5 kg, which affects fixture support and system loading. Its rotor inertia is 2.9 × 10⁻⁴ kg·m², an important value when calculating acceleration and start-stop profiles. The attached leads use AWG 22 wire and extend at least 305 mm, allowing them to reach nearby terminal blocks without splices. Four mounting holes are arranged on a 70 mm pitch. Each mounting hole has a diameter of 5.5 mm, while a 60 mm pilot centers the motor in the mating bore. The overall motor length is 92.2 mm, allowing installation in shallow enclosures while providing sufficient internal space for five separate phase windings. The mounting pattern, pilot diameter, and housing length should be checked against the machine interface before installation.
