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High-Precision Custom Double Helical Gears from China - Top Suppliers & Manufacturer Factory Services
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High-Precision Custom Double Helical Gears from China - Top Suppliers & Manufacturer Factory Services

Sani Transmission, a leading supplier and factory in China, specializes in high-precision double helical gear customization services. Our gears are crafted from premium engineering plastics such as POM and nylon, ensuring durability and performance. We offer full customization capabilities ranging from module sizes of 0.1 to 5, all manufactured in Japan using advanced technology. Our innovative oblique tooth design guarantees smooth transmission, while the double-layer structure effectively integrates different functional tooth types. These gears are ideal for applications in micro-motors, smart home devices, and precision instruments. We support processing based on your drawings and samples, with a rapid delivery timeframe of just 30 days. Choose Sani Transmission for reliable gear solutions tailored to your specific needs

    Core Advantages
    • Diverse Materials: Providing material options such as POM (Crystal Steel), PA66, etc., which combine wear and noise reduction characteristics, suitable for different load scenarios.
    • Precision Machining: Adopting full Japanese equipment manufacturing process, with tooth profile accuracy controlled within ±0.2mm, and helix angle supporting 0–35° customization, meeting special transmission needs.
    • Structural Innovation: Dual-connection design can integrate straight/helical combination, and single piece can achieve speed change or steering function, reducing assembly links and improving the reliability of the transmission system.
    • Basic Specifications: Modulus range of 0.1–2.5, outer diameter of 10–100mm, number of teeth from 3–100, and maximum load torque of up to 250gf.cm.
    • Performance Indicators: Operating temperature from -30℃ to 120℃, noise <45dB, and no abnormal wear in life tests exceeding 500,000 revolutions.
    Sani Transmission provides high-precision double helical gear customization services, adopting high-quality engineering plastics such as POMnylon, supporting full customization from  ( (4)
    Sani Transmission provides high-precision double helical gear customization services, adopting high-quality engineering plastics such as POMnylon, supporting full customization from  ( (5)
    Application Scenarios
    • 🤖
      Smart Devices Used for the joint gearbox of the robot cleaner, the transmission module of the smart lock.
    • 🏭
      Industrial Field Integrated in the mechanism of automated equipment, the precision transmission system of medical instruments.
    • 📡
      Consumer Electronics UAV servo gear set, core components of the focusing mechanism of the projector.
    Sani Transmission provides high-precision double helical gear customization services, adopting high-quality engineering plastics such as POMnylon, supporting full customization from  (1)
    Sani Transmission provides high-precision double helical gear customization services, adopting high-quality engineering plastics such as POMnylon, supporting full customization from  ( (3)
    Sani Transmission provides high-precision double helical gear customization services, adopting high-quality engineering plastics such as POMnylon, supporting full customization from  ( (7)
    Frequently Asked Questions
    Order & After-Sales
    Q Are the products compliant with industry standards for specific fields (e.g., automotive/medical)?
    Absolutely. Our automotive-related products meet IATF 16949 requirements, and medical-use micro-transmission parts align with relevant medical device precision and safety standards—ensuring compliance with industry regulations.
    Q Can SANI adjust product parameters (e.g., torque, speed) based on my application feedback?
    Yes. After receiving your feedback on sample or trial use, our engineering team can optimize parameters like torque, speed, or material to better match your application needs.
    Q What materials are available for custom double helical gears?
    We offer a range of high-quality engineering plastics including POM (Crystal Steel) and PA66 (Nylon). Each material is selected based on its wear resistance, noise reduction properties, and suitability for specific load and environmental conditions.
    Q What is the minimum and maximum outer diameter available for custom gears?
    Our custom double helical gears support an outer diameter range of 10mm to 100mm, with a modulus range of 0.1–2.5 and tooth counts from 3 to 100, covering a wide variety of precision transmission applications.
    Q What is the operating temperature range and noise level of your gears?
    Our gears are engineered to operate reliably in temperatures ranging from -30℃ to 120℃. Noise levels are controlled to below 45dB, and durability is validated through life tests exceeding 500,000 revolutions with no abnormal wear detected.
    Q Can a single gear piece achieve both speed change and steering functions?
    Yes. Thanks to our structural innovation with dual-connection design, a single gear piece can integrate both straight and helical combinations, enabling speed change or steering functions simultaneously. This reduces assembly complexity and enhances overall transmission system reliability.