1. Transmission Chains
Power transmitting chains are categorized into six major organizations.
1.1 Regular 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-Free Chains. These chains 
have longer use life than regular chains without lubrication.
1.4 Environmentally Resistant Chains. Chains with special corrosion resistance.
1.5 Specialized Chains, Type 1. For particular applications.
1.6 Specialty Chains, Type 2. For general цепь передачи designs.
Within these six groups, there are plenty of types of chains available