Double Pitch roller chains are created in accordance with all the ASME/ANSI B29.3 (Transmission Series) and B29.four (Conveyor Series) American roller chain requirements. Usually these chains are related to ASME/ANSI typical solutions except the pitch is 
double. They are obtainable in Transmission Series, Conveyor Series with Typical (compact) Rollers and Conveyor Series with Significant (oversized) Rollers.
Transmission Series
This series is often utilised on drives with slow to moderate speeds, very low chain loads and long center distances. Side plates possess a fi gure ?¡ã8?¡À contour. The chain variety is obtained by adding 2000 towards the ASME/ANSI chain number plus the prefi x letter ?¡ãA?¡À. Note that some firms tend not to use a prefi x letter for this series so the chains may possibly be represented as A2040, A2050 and so forth. or 2040, 2050 and so on.
Conveyor Series with Common (modest) Rollers
This series is usually employed on light to moderate load materials dealing with conveyors with or with no attachment hyperlinks. The side plate contour is straight for enhanced sliding properties. Pitch sizes of 1-1/2?¡À and greater have ?¡ãHeavy?¡À series link plates (i.e. link plates with the up coming more substantial chain dimension. The chain amount is observed by adding 2000 on the ASME/ANSI chain amount as well as the prefi x letter ?¡ãC?¡À. Chains using the ?¡ãheavy?¡À style side plates use a suffi x letter ?¡ãH?¡À.
Conveyor Series with Large (oversized) Rollers
These chains possess huge rollers to ensure the chain rolls on a conveyor track cutting down friction. Chain numbers are identified from the similar way as mentioned over except the final digit to the chain number is transformed from ?¡ã0?¡À to ?¡ã2?¡À which denotes the large roller.
Sprockets
Generally sprockets ought to be made specially for these chains in accordance on the ASME/ANSI B29.3 and B29.4 requirements on the other hand, for Transmission Series and Conveyor Series with Normal (small) Rollers, ASME/ANSI B29.1 Conventional roller chain sprockets may be employed offered the amount of teeth is 30 or extra.