1. Transmission Chains
Power transmitting chains are classified into six major groupings.

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