1. Transmission Chains
Power transmitting transmission chain Chains are categorized into six major organizations.
1.1 Regular 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 put on 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