Double Pitch roller chains are produced in accordance using the ASME/ANSI B29.3 (Transmission Series) and B29.4 (Conveyor Series) American roller chain requirements. Usually these chains are 
very similar to ASME/ANSI normal goods except the pitch is double. They are offered in Transmission Series, Conveyor Series with Regular (modest) Rollers and Conveyor Series with Large (oversized) Rollers.
Transmission Series
This series is often utilised on drives with slow to reasonable speeds, minimal chain loads and long center distances. Side plates have a fi gure ?¡ã8?¡À contour. The chain number is obtained by adding 2000 to the ASME/ANSI chain variety plus the prefi x letter ?¡ãA?¡À. Note that some providers usually do not use a prefi x letter for this series so the chains may perhaps be represented as A2040, A2050 and so forth. or 2040, 2050 etc.
Conveyor Series with Standard (small) Rollers
This series is usually employed on light to moderate load materials handling conveyors with or with out attachment links. The side plate contour is straight for improved sliding properties. Pitch sizes of 1-1/2?¡À and larger have ?¡ãHeavy?¡À series link plates (i.e. link plates on the next larger chain dimension. The chain amount is discovered by including 2000 to your ASME/ANSI chain number plus the prefi x letter ?¡ãC?¡À. Chains with the ?¡ãheavy?¡À style side plates use a suffi x letter ?¡ãH?¡À.
Conveyor Series with Significant (oversized) Rollers
These chains possess huge rollers so that the chain rolls on a conveyor track reducing friction. Chain numbers are identified within the very same way as noted over except the final digit over the chain variety is altered from ?¡ã0?¡À to ?¡ã2?¡À which denotes the massive roller.
Sprockets
On the whole sprockets need to be produced specially for these chains in accordance for the ASME/ANSI B29.three and B29.4 requirements having said that, for Transmission Series and Conveyor Series with Conventional (modest) Rollers, ASME/ANSI B29.1 Normal roller chain sprockets could be employed supplied the number of teeth is 30 or much more.
