1. Transmission Chains
Power transmitting chains are classified into six major organizations.
1.1 Standard Roller 
Chains. These chains are created for general usage.
1.2 High Performance Chains. These chains have higher tensile strength and greater fatigue power.
1.3 Lube-Free Chains. These chains have longer wear life than standard chains without lubrication.
1.4 Environmentally Resistant Chains. Chains with particular corrosion resistance.
1.5 transmission chain Specialty Chains, Type 1. For particular applications.
1.6 Specialty Chains, Type 2. For general designs.
Within these six groups, there are numerous types of chains available