1. Transmission Chains
Power transmitting chains are classified into six major groups.

1.1 Standard Roller Chains. These chains are designed for general usage.
1.2 High Performance Chains. These chains possess higher tensile power and greater fatigue strength.
1.3 Lube-Totally free Chains. These chains have longer wear life than standard chains without lubrication.
1.4 Environmentally Resistant Chains. Chains with transmission chain particular corrosion resistance.
1.5 Specialty Chains, Type 1. For specific applications.
1.6 Specialized Chains, Type 2. For general designs.
Within these six groups, there are plenty of types of chains available