1. Transmission Chains
Power tranny transmission chain Chains are classified into six major groups.

1.1 Regular Roller Chains. These chains are made for general usage.
1.2 High Performance Chains. These chains have higher tensile strength and greater fatigue power.
1.3 Lube-Totally free Chains. These chains have longer use life than regular chains without lubrication.
1.4 Environmentally Resistant Chains. Chains with particular corrosion resistance.
1.5 Specialized Chains, Type 1. For particular applications.
1.6 Specialized Chains, Type 2. For general designs.
Within these six groups, there are many types of chains available