Since its introduction in 1939, the Sumitomo cycloid reducer has gained widespread recognition for its exceptional strength and reliability. This is largely due to its unique tooth profile and advanced structural design. The internal teeth are shaped with a circular arc, while the external gear follows an equidistant curve of the outer cycloid. As a result, the meshing ratio is significantly improved—up to two to three times that of traditional involute gears. This not only enhances performance but also prevents tooth breakage, ensuring high durability and a long service life. In terms of precision, the high-strength and impact-resistant design of the cycloid reducer allows for low-backlash control, making it ideal for applications requiring high positioning accuracy and rigidity. When paired with a servo motor, it delivers exceptional precision, making it a top choice for machine tools, industrial robots, and automated factory equipment. Key Features: 1. **Lightweight and Compact Design** By combining an internal planetary gear system with a circular gear mechanism, the cycloid reducer achieves a lighter weight and more compact structure. This makes it easy to achieve high reduction ratios, such as 1/6 to 1/119 for Class 1, 1/104 to 1/7569 for Class 2, and 1/9251 to 1/658,503 for Class 3—far exceeding what traditional involute gears can offer. 2. **High Performance and Long Service Life** The inner gear features a circular arc tooth shape, while the outer gear uses a circular trochoidal curve. This design increases the meshing ratio by 2–3 times compared to involute gears, reducing the risk of tooth failure and enhancing overall performance. Additionally, the reducer uses high-carbon chromium bearing steel, known for its excellent wear and fatigue resistance. 3. **Smooth Operation and Low Noise** The cycloid reducer operates with minimal vibration and noise, thanks to its optimized gear engagement and smooth motion transmission. 4. **Easy Installation and Maintenance** With fewer components, the cycloid reducer is simple to maintain globally. The company provides a reliable after-sales service network, especially in Japan and worldwide. Moreover, the input and output shafts are concentric, making installation straightforward and efficient. 5. **High Efficiency and Energy Saving** As a rolling contact mechanism, the cycloid reducer offers high efficiency. The first-class model exceeds 95%, while the second-class model goes beyond 85%. This is a significant improvement over the efficiency of traditional involute gears at the same reduction ratio. 6. **Wide Range of Applications** Cycloid reducers are available in various types, including outdoor, explosion-proof, pressure-resistant, dustproof, inverter-compatible, brake-equipped, and custom voltage models. They can be mounted on ceilings or walls and are suitable for both low and high-temperature environments. This wide variety ensures that there's a solution for almost any application. With its combination of durability, precision, and versatility, the Sumitomo cycloid reducer continues to be a preferred choice across industries. Whether you're looking for high-performance machinery or cost-effective automation solutions, this technology delivers unmatched value.
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