Sanyo Denki Stepping Motors – High-Precision Motion Control
Sanyo Denki stepping motors (often branded StepSyn or SANMOTION F) deliver exceptional precision and reliability for motion control. These two-phase steppers span frame sizes from 35mm up to 86mm, providing holding torques from 0.195 Nm to 9 Nm. With selectable 1.8° or 0.9° step angles and choices of unipolar or bipolar windings, they ensure smooth, accurate positioning across diverse applications. Robust environmental ratings operating from –10°C to +50°C and high humidity and vibration-tested construction make these motors ideal for demanding industrial use.
Wake Industrial stocks both new surplus and refurbished Sanyo Denki Stepping Motors, as well as offering extensive repair and replacement options to ensure you keep your line running. Fill out the quote form or call 1‑919‑443‑0207 to learn how Wake Industrial can support your industrial automation needs.

The 103H7823-0740, part of the StepSyn Stepping Motors, delivers precise, reliable motion control with high torque and low vibration.
High Torque & Precision.
Sanyo Denki steppers offer tight step accuracy (1.8°/0.9°) and an exceptionally low mechanical backlash, enabling repeatable, stable motion. For example, larger models deliver up to 7.44 Nm holding torque while compact units still provide ~0.4 Nm torque for precise control.
Robust Reliability.
These motors are designed for longevity in harsh environments: they are vibration-tested (10–500 Hz) and built with Class B/F insulation for high heat tolerance. The StepSyn series’ rotor inertia and mass are engineered across models (0.025–4.5×10⁻⁴ kgm², 0.2–4 kg) to ensure smooth response. Rated operating ranges (–10~+50°C) and IP ratings (e.g. IP43 protection on some models) keep them running reliably under load.
Flexible Integration.
Standard mounting options like NEMA frames, and metric flanges and wiring options make these steppers easy to install. Many include encoder ports for closed-loop control. A wide range of voltages and drive currents means you can match a Sanyo Denki motor to low-power or high-power applications alike.
Featured Models & Specifications
Our inventory includes popular Sanyo Denki stepper models across all sizes. Key examples include:
Model Number | Size (NEMA) | Type | Step Angle | Current per Phase | Holding Torque |
103H5210-5240 | 42mm (NEMA-17) | Bipolar | 1.8° | ~1 A | - |
103H7123-0140 | 56mm | Unipolar | 1.8° | 1 A | 0.83 Nm |
103H7123-0440 | 56mm | Unipolar | - | 2 A | 0.83 Nm |
103H7123-0740 | 56mm | Unipolar | - | 3 A | 0.78 Nm |
103H7126-0440 | 56mm | Unipolar | - | 2 A | 1.27 Nm |
103H7126-0740 | 56mm | Unipolar | - | 3 A | 1.27 Nm |
103H7823-0740 | 60mm | Unipolar | - | 3 A | 2.1 Nm |
103H7823-1740 | 60mm | Bipolar | - | 4 A | 2.7 Nm |
103H7823-5740 | 60mm | Bipolar | - | 2 A | 2.7 Nm |
103H8223-5141 | 86mm | Bipolar | 1.8° | - | ~7.44 Nm |
103H8223-6340 | 86mm | Bipolar | - | 6 A | 7.44 Nm |
103H8223-6540 | 86mm | Bipolar | - | 4 A | 7.44 Nm |
103H5208-10U41 | 42mm (NEMA-17) | Bipolar | 1.8° | - | ~0.4 Nm |
Applications
Sanyo Denki stepper motors excel in precision automation and motion control.
- CNC and Robotics: Ideal for CNC machines, mills, and robotic actuators where accurate step-by-step motion is critical.
- 3D Printing and Packaging: Used in 3D printers, plotters, and packaging machines for repeatable positioning tasks.
- Semiconductor & Electronics: Drives wafer handling, semiconductor test equipment, and assembly robots.
- Industrial Sewing & Printing: Powers industrial sewing machines, textile equipment, and printing presses.
- Medical & Lab Automation: Used in medical devices and lab analyzers requiring precise control (e.g. pumps, scanners).
- Financial Terminals & Copiers: Employed in ATMs, copiers, and imaging equipment for reliable indexing and transport.
In each case, the reliability and repeatability of Sanyo Denki steppers ensure that motion tasks are handled accurately and consistently.

Wake Industrial: Purchase, Repair & Refurbishment
Wake Industrial carries a wide range of Sanyo Denki stepping motors and offers comprehensive services to support them. We stock many StepSyn or SANMOTION F models, provide fast quotes, and offer worldwide shipping. Our in-house repair center can refurbish or repair your motors to like-new condition – backed by skilled technicians who specialize in motor maintenance.
Whether you need to buy a new 103H7123-0740, 103H7823-5740, any other model, or repair an existing unit, Wake Industrial is your resource for parts, service, and support. Wake Industrial thoroughly tests all parts before shipment, ensuring your parts work right out of the box. Contact Wake Industrial today by calling 1-919-443-0207 or filling out the quote form on the page to get the support you need.