103H8222-0941 Sanyo Denki
Wake Industrial LLC is not an authorized distributor of this product.
The Sanyo Denki 103H8222-0941 is part of the StepSyn Stepping Motors series and features a holding torque of 4.13 N·m and a step angle of 1.8 degrees per step. This motor has an 82.55 mm flange width, a frame diameter of 86 mm, and uses a single 12 mm diameter shaft. It is unipolar wound, has a rated current of 4 amps per phase, and weighs 2.5 kilograms.
Internal Product Review
The 103H8222-0941 is a Sanyo Denki StepSyn stepping motor with a 1.8° step angle and unipolar winding. A 4.13 N·m holding torque paired with 4 A/phase rated current gives this motor strong low-speed positioning capability. Solid electrical matching and precise stepping make this unit an excellent choice for demanding motion-control assemblies.
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Product Description:
The 103H8222-0941 is a hybrid stepping motor manufactured by Sanyo Denki for the StepSyn Stepping Motors series. By translating digital pulse sequences into incremental rotation, this motor supplies controlled motion for indexing tables, small gantry axes, and metering pumps in industrial automation. Its open-loop design eliminates the need for encoders while still delivering repeatable positioning, making it useful wherever moderate speed and an accurate step count are required.
The square mounting face spans 82.55 mm, matching common NEMA 34 fixtures. A static holding capacity of 4.13 N·m permits the shaft to resist external loads when the drive is energized but not stepping. Driver electronics must accommodate a per-phase demand of 4 A, which establishes wire size, heat-sink capacity, and power-supply margins. The standard pitch of 1.8° per step provides 200 full steps per revolution and permits finer motion through microstepping. Coil resistance is 0.97 Ω per phase, so each winding dissipates approximately 16 W at the rated current while influencing low-speed torque. An inductance of 3.6 mH per phase moderates current rise and shapes the step response. The unipolar winding is accessed through six AWG 22 leads for straightforward driver wiring.
The rotor inertia is 2.9 × 10⁻⁴ kg·m², balancing quick acceleration with stable incremental stops. The motor has a total mass of 2.5 kg, which adds thermal mass and damping to the assembly. Its overall stack length is 92.2 mm, allowing the motor to fit within compact enclosures while providing the required torque. A ground steel shaft with a diameter of 12 mm supports couplings and pulleys. The shaft exits only on one side of the motor. Installation uses an 86 mm frame diameter, a 69.6 mm mounting-hole pitch, and a 73.025 mm pilot that centers the motor against gearboxes or adapter plates.
