1. Transmission Chains
Power transmission chains are categorized into six 
major groupings.
1.1 transmission chain Standard Roller Chains. These chains are made for general usage.
1.2 High Performance Chains. These chains possess 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 unique corrosion resistance.
1.5 Specialty Chains, Type 1. For particular applications.
1.6 Specialty Chains, Type 2. For general designs.
Within these six groups, there are various types of chains available
