Here are some of the most well-known leading global suppliers of roller chain breakers:

```markdown

Leading Global Suppliers of Roller Chain Breakers

1. Renold Plc

   • Renowned for its chain products, including roller chain breakers, and offers extensive technical support.

2. Tsubaki

   • One of the largest manufacturers of chain products, Tsubaki provides high-quality roller chains and related tools.

3. DID Chain

   • A major brand known for its durable roller chains and associated products, including chain breakers.

4. KMC Chain

   • Offers a wide range of chains for various applications and provides innovative solutions for chain maintenance.

5. Sommers Chain

   • Known for producing high-quality roller chains and accessories, including chain breakers designed for efficient operation.

6. Diamond Chain Company

   • A manufacturer that focuses on high-performance roller chains and offers products suitable for various industrial applications.

7. Browning (a division of Regal Rexnord)

   • Offers a wide range of power transmission products, including roller chains and tools for maintenance.

8. IKS Seil- und Hebetechnik GmbH

   • Specializes in industrial chains and accessories, including chain breakers known for their reliability.

9. Tsubaki Nakashoji

   • Part of the broader Tsubaki group, focusing on market-specific chain solutions, including breaker tools.

10. Chain-Sprocket Distributors (CSD)

    • Provides a variety of chain products and maintenance tools, including roller chain breakers.

```

These companies are recognized for their commitment to quality, innovation, and customer support in the field of roller chains and related tools. They operate worldwide and serve various industries, including automotive, manufacturing, and material handling.