1. Transmission Chains
Power transmission chains are transmission chain categorized into six major groupings.
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 power.
1.3 Lube-Totally free Chains. These chains have longer use life than standard chains without lubrication.
1.4 Environmentally Resistant Chains. Chains with special 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 numerous types of chains available