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

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