103H8223-5141 Sanyo Denki
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The Sanyo Denki 103H8223-5141 is a 2-phase bipolar stepping motor in the StepSyn Stepping Motors series. It features a holding torque of 7.44 Newton-meters, a rated current of 4 Amps per phase, and a step angle of 1.8 degrees. This motor has a body length of 125.8 mm, a motor diameter of 86 mm, and weighs 3.5 kilograms.
Internal Product Review
The Sanyo Denki 103H8223-5141 is a StepSyn stepping motor with 7.44 N·m holding torque and a 1.8° step angle. A 2-phase bipolar winding and a 4 A/phase rating support precise indexing and dependable drive integration in motion-control applications. With 4.4 × 10^-4 kg·m² rotor inertia, the motor is a strong choice for accurate high-torque positioning.
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Product Description:
The 103H8223-5141 stepper motor from Sanyo Denki belongs to the StepSyn Stepping Motors series. It translates pulse trains from a drive into incremental shaft movement, giving machinery repeatable open-loop positioning for feeders, pick-and-place heads, and compact gantry axes. Electromagnetic holding torque allows the load to remain stationary when pulses stop, which may eliminate the need for a separate brake in many industrial systems. The device uses two stator windings arranged in a bipolar configuration, so the sequence and polarity of the control pulses determine the direction of rotation and microstepping resolution.
Electrically, the motor provides a holding torque of 7.44 N·m when the driver supplies 4 A per phase. Each coil has a resistance of 0.9 Ω per phase, so voltage demand remains modest and heat rise can be controlled. Motion resolution is 1.8° per full step, and the rotor inertia of 4.4 × 10⁻⁴ kg·m² balances stiffness with responsiveness during indexing cycles. An inductance of 8.1 mH per phase affects current rise time when the motor is used with chopper regulators, allowing switching frequencies in the tens of kilohertz without excessive ripple. Proper driver sizing helps maintain consistent torque across start-stop duty profiles while reducing acoustic noise. Driver microstepping can subdivide the basic step angle to produce quieter and smoother motion at low speeds.
The motor has a frame diameter of 86 mm and a housing length of 125.8 mm. Four mounting holes, each measuring 5.35 mm in diameter, are arranged in a square pattern with 69.6 mm spacing. A 73.025 mm pilot seats in a matching pocket to maintain concentric alignment during installation. The output shaft has a diameter of 12 mm and extends 30 mm, providing sufficient engagement length for rigid couplings or timing-belt pulleys. With a mass of 3.5 kg, the motor may require additional support when installed on a vertical plate. Most suitable aluminum extrusion frames can accommodate this load when the mounting surface is properly secured.
