1. Transmission Chains
Power transmission chains are classified into 
six major groupings.
1.1 Standard Roller Chains. These chains are created for general usage.
1.2 POWERFUL Chains. These chains have higher tensile strength and greater fatigue power.
1.3 Lube-Totally free Chains. These chains have longer put on life than regular chains without lubrication.
1.4 Environmentally Resistant Chains. Chains with unique corrosion transmission chain 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 many types of chains available