Editing Roller chain (section)

==Use==
[[File:ROLL-RING im Triplexkettentrieb.gif|thumb|An example of two 'ghost' sprockets tensioning a triplex roller chain system]]

* Roller chains are used in low- to mid-speed drives at around 600 to 800 feet per minute; however, at higher speeds, around 2,000 to 3,000 feet per minute, [[Belt_(mechanical)#V_belts|V-belt]]s are normally used due to wear and noise issues.
* A [[bicycle chain]] is a 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 [[motorcycle]]s although it is sometimes replaced by either a [[toothed belt]] or a [[shaft drive]], which offer lower noise level and fewer maintenance requirements.
* Some [[automobile]] [[engine]]s use roller chains to drive the [[camshaft]]s. Very high performance engines often use gear drive, and starting in the early 1960s [[toothed belt]]s were used by some manufacturers. 
* Chains are also used in [[forklift]]s using hydraulic rams as a pulley to raise and lower the carriage; however, these chains are not considered roller chains, but are classified as lift or [[leaf chain]]s.
* [[Chainsaw]] [[saw chain|cutting chains]] superficially resemble roller chains but are more closely related to leaf chains. They are driven by projecting drive links which also serve to locate the chain onto the bar.

[[Image:Vector-nozzle-sea-harrier-jet-common.jpg|thumb|[[Sea Harrier]] FA.2 ''[[Serial number|ZA195]]'' front (cold) vector thrust nozzle - the nozzle is rotated by a chain drive from an air motor]]

*A perhaps unusual use of a pair of motorcycle chains is in the [[Harrier jump jet]], where a chain drive from an air motor is used to rotate the movable engine nozzles, allowing them to be pointed downwards for hovering flight, or to the rear for normal forward flight, a system known as "[[thrust vectoring]]".