1. Transmission Chains
Power transmission chains are categorized 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-Free Chains. These chains have longer put on life than regular 
chains without transmission chain lubrication.
1.4 Environmentally Resistant Chains. Chains with unique 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 many types of chains available