On the whole, conveyor chains are operated for longer distances and at lower speeds than transmission chains. Accordingly, although the pins, bushings and rollers are left unchanged, as well as 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 compact since the chain speed is low. Double Pitch Chains, conform to ANSI regular and “Ultimate Existence Chain Series” and “Environment Resistant Chain Series”, as are single pitch chains may also be out there.
Double pitch chain with resin rollers
This can be a Double Pitch Chain with R Roller manufactured from resin, which generates significantly less noise and lighter weight compared with steel rollers. Thus, the chain is ideal to get a conveyor process made to operate quietly and convey light-weight posts. Because the parts apart from rollers are manufactured from steel, the average tensile strength of a resin roller chain is definitely the same as that of the steel roller chain. Even so, the “maximum allowable load” from the chain needs to be stored lower, as shown in the following table, to stop injury for the plastic rollers through the pressure from the 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 such as guid rails.
Huge roller (R) and tiny rollers (S)
Given that double pitch chains are usually made use of for conveying goods on a horizontal floor, chains created for this goal have increased roller diameter equal to that of single pitch chains of your identical pitch for improved load capacity and reduce traveling resistance. These rollers with greater outer diameter are identified as “large rollers”, along with the normal rollers are called “small rollers”.
In this catalog, large rollers are expressed as R Roller, and little rollers as S Roller.
Designation of double pitch chains
A double pitch chain is designated, as during the following example, according to the nominal variety of the single pitch chain it is based on.
Connecting hyperlinks
For the connecting links of double pitch chains of all sizes, the connecting plates and connecting pins are clearance-fitted. For C2060H or smaller, the spring clip variety (R connecting link) is common. For C2080H or greater, the cotter kind (C connecting link) is normal. Connecting hyperlinks with an attachment, top roller or side roller can also be offered.