Uses of Roller Chains :

Roller chains are the best applications of force in a small system. A roller chain is capable of taking energy from a motor and transferring that energy to a small area. The chain can turn infinitely, and it can connect many parts of the same system at once. Large machines rely on these chains to connect many cams to the power, and roller chains can lift doors weighing several tons using a fraction of a horsepower. Roller chains are used in low- to mid-speed revolutions at around 600 to 800 feet per minute; however, at increased speeds, around 2,000 to 3,000 feet per minute, V-belts are normally used because of wear and noise issues. They are used in industrial, agricultural and domestic applications, which can include tube-drawing machines, printing presses, motorcycles, cars, bikes, and conveyors.

Roller chains are most often seen inside large engines, on large doors and within machinery of all types. A roller chain connects many parts of the system to one another. A large machine in a warehouse or factory must use roller chains to connect multiple parts of the same machine. Several gears may run through the links in the chain, and you must have a chain that can withstand the pressure put on it as it runs all day. However, roller chains are not used in heavy machinery that employ hydraulic rams. Chains used to lower and raise the body are not considered roller chains, but are classified as lift or leaf chains.

In older car engines from the United States and other countries, roller chains would traditionally drive the camshaft(s) off the crankshaft, thus leading to less noise than a gear drive as used in very high performance engines, and offering more durability than the timing belt frequently used on more modern engines.

A bicycle chain is another common form of roller chain. Bicycle chains may have a master link, or may require a chain tool for removal and installation. A similar but larger, and thus stronger chain, is used on most motorcycles although it is sometimes replaced by either a toothed belt or a shaft drive, which offers a lower noise level and fewer maintenance requirements.

Doors can also use roller chains. A door that uses a roller chain to rise and fall requires a chain that will reach from the motor to other end of the door. A simple roller chain will infinitely turn between the motor and the roller. A large industrial door can be raised and lowered with a chain on each side, or a powerful motor can use one chain to raise and lower the door.