Generally, conveyor chains are operated for longer distances and at lower speeds than transmission chains. Accordingly, despite the fact that the pins, bushings and rollers are left unchanged, as well as the plate pitch is doubled to reduce the amount of sprocket teeth engaged with all the chain to half, the wear of pins, bushings and rollers is little since the chain velocity is reduced. Double Pitch Chains, conform to ANSI typical and “Ultimate Life Chain Series” and “Environment Resistant Chain Series”, as are single pitch chains are also out there.
Double pitch chain with resin rollers
This is a Double Pitch Chain with R Roller manufactured from resin, which generates less noise and lighter bodyweight compared with steel rollers. Therefore, the chain is suitable to get a conveyor program built to operate quietly and convey light-weight posts. Because the parts besides rollers are made of steel, the average 
tensile strength of the resin roller chain is definitely the same as that of a steel roller chain. However, the “maximum allowable load” with the chain need to be kept reduced, as shown during the following table, to avoid harm for the plastic rollers from the stress from your engagement with sprockets.
The “Allowable load of resin rollers” refers towards the allowable load acting when conveyed articles press the resin rollers traveling within the floor surface this kind of as guid rails.
Big roller (R) and little rollers (S)
Given that double pitch chains are regularly utilised for conveying items on the horizontal floor, chains developed for this purpose have enhanced roller diameter equal to that of single pitch chains in the identical pitch for greater load capacity and reduced traveling resistance. These rollers with more substantial outer diameter are termed “large rollers”, as well as the standard rollers are referred to as “small rollers”.
In this catalog, massive rollers are expressed as R Roller, and small rollers as S Roller.
Designation of double pitch chains
A double pitch chain is designated, as in the following instance, according to the nominal variety of the single pitch chain it’s depending on.
Connecting back links
For your connecting backlinks of double pitch chains of all sizes, the connecting plates and connecting pins are clearance-fitted. For C2060H or smaller, the spring clip style (R connecting website link) is regular. For C2080H or greater, the cotter type (C connecting website link) is conventional. Connecting links with an attachment, best roller or side roller may also be available.
