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