Double Pitch roller chains are created in accordance together with the ASME/ANSI B29.3 (Transmission Series) and B29.4 (Conveyor Series) American roller chain requirements. Generally these chains are very similar to ASME/ANSI regular products except that the pitch is double. They’re readily available in Transmission Series, Conveyor Series with Typical (compact) Rollers and Conveyor Series with Massive (oversized) Rollers.
Transmission Series
This series is usually applied on drives with slow to moderate speeds, low chain loads and long center distances. 
Side plates have a fi gure ?¡ã8?¡À contour. The chain amount is obtained by incorporating 2000 on the ASME/ANSI chain quantity and the prefi x letter ?¡ãA?¡À. Note that some companies usually do not use a prefi x letter for this series so the chains may be represented as A2040, A2050 etc. or 2040, 2050 and so on.
Conveyor Series with Regular (compact) Rollers
This series is often applied on light to reasonable load material dealing with conveyors with or with no attachment links. The side plate contour is straight for enhanced sliding properties. Pitch sizes of 1-1/2?¡À and larger have ?¡ãHeavy?¡À series hyperlink plates (i.e. website link plates in the upcoming larger chain size. The chain quantity is found by including 2000 towards the ASME/ANSI chain quantity along with the prefi x letter ?¡ãC?¡À. Chains using the ?¡ãheavy?¡À form side plates use a suffi x letter ?¡ãH?¡À.
Conveyor Series with Large (oversized) Rollers
These chains possess big rollers to ensure that the chain rolls on a conveyor track minimizing friction. Chain numbers are found in the identical way as mentioned above except that the final digit over the chain amount is altered from ?¡ã0?¡À to ?¡ã2?¡À which denotes the big roller.
Sprockets
Generally sprockets ought to be created specially for these chains according to the ASME/ANSI B29.3 and B29.four standards however, for Transmission Series and Conveyor Series with Normal (little) Rollers, ASME/ANSI B29.1 Standard roller chain sprockets may possibly be used offered the quantity of teeth is 30 or more.