Certainly! Here is a list of some of the most well-known leading global suppliers of Spheroidal Graphite (SG) Iron Helical Gears presented in Markdown format:

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Leading Global Suppliers of Spheroidal Graphite (SG) Iron Helical Gears

1. Gleason Corporation

   • Specializes in gear manufacturing and gear production technology.

2. KHK Gears

   • Offers a wide range of gears and custom gear solutions, including SG iron gears.

3. David Brown Santasalo

   • Known for high-quality industrial gears, including helical and SG iron options.

4. Timken Company

   • A major player in manufacturing gears and mechanical power transmission components.

5. Winergy Drive Systems

   • Focuses on gear products for wind turbines and industrial applications.

6. Brevini Power Transmission

   • Offers a variety of gearing solutions and specializes in heavy-duty applications.

7. Nordex SE

   • Designs and manufactures gearboxes and components for renewable energy applications.

8. Zhejiang Dazhong Gear Co., Ltd.

   • A Chinese company producing various gears, including SG iron helical gears.

9. GKN Plc

   • Involved in powertrain manufacturing with applications in various industries.

10. Hubei Jingshan Gear Co., Ltd.

    • Known for producing high-quality gears for automotive and industrial sectors.

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Please note that the market dynamics can fluctuate, and it's advisable to verify the latest company information and product offerings to ensure they meet your specific needs.