Normally, conveyor chains are operated for longer distances and at lower speeds than transmission chains. Accordingly, though the pins, bushings and rollers are left unchanged, and also the plate pitch is doubled to cut back the number of sprocket teeth engaged using the chain to half, the put on of pins, bushings and rollers is smaller because the chain speed is low. Double Pitch Chains, conform to ANSI standard 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
It is a Double Pitch Chain with R Roller manufactured from resin, which generates much less noise and lighter weight in contrast with steel rollers. Thus, the chain is suitable for a conveyor procedure created to operate quietly and convey light-weight articles. Because the components other than rollers are made of steel, the typical tensile strength of a resin roller chain will be the identical as that of a steel roller chain. Nevertheless, the “maximum allowable load” of your chain really should be kept reduced, as proven in the following table, to avoid damage to your plastic rollers through the stress from the engagement with sprockets.
The “Allowable load of resin rollers” refers to the allowable load acting when conveyed articles press the resin rollers traveling within the floor surface such as guid rails.
Substantial roller (R) and little rollers (S)
Considering that double pitch chains are usually applied for conveying solutions on the horizontal floor, chains developed for this goal have enhanced roller diameter equal to that of single pitch chains of your same pitch for greater load capability and decrease traveling resistance. These rollers with larger outer diameter are named “large rollers”, as well as frequent rollers are named “small rollers”.
In this catalog, huge rollers are expressed as R Roller, and tiny rollers as S Roller.
Designation of double pitch chains
A double pitch chain is designated, as inside the following instance, according to the nominal number of the single pitch chain it’s based upon.
Connecting links
For the connecting hyperlinks of double pitch chains of all sizes, the connecting plates and connecting pins are clearance-fitted. For C2060H or smaller, the spring clip sort (R connecting link) is typical. For C2080H or larger, the cotter style 
(C connecting hyperlink) is regular. Connecting hyperlinks with an attachment, top rated roller or side roller are also obtainable.
