Double Pitch roller chains are developed in accordance with the ASME/ANSI B29.three (Transmission Series) and B29.4 (Conveyor Series) American roller chain standards. In general these chains are equivalent to ASME/ANSI regular merchandise except that the pitch is double. They can be offered in Transmission Series, Conveyor Series with Common (smaller) Rollers and Conveyor Series with Large (oversized) Rollers.
Transmission Series
This series is often utilised on drives with slow to reasonable speeds, lower chain loads and long center distances. Side plates have a fi gure ?¡ã8?¡À contour. The chain amount is obtained by incorporating 2000 towards the ASME/ANSI chain quantity as well as prefi x letter ?¡ãA?¡À. Note that some companies will not use a prefi x letter for this series so the chains could be represented as A2040, A2050 etc. or 2040, 2050 etc.
Conveyor Series with Regular (tiny) Rollers
This series is often utilized on light to moderate load materials handling conveyors with or with out attachment backlinks. The side plate contour is straight for improved sliding properties. Pitch sizes of 1-1/2?¡À and bigger have ?¡ãHeavy?¡À series link plates (i.e. website link plates from the upcoming more substantial chain size. The chain number is located by including 2000 towards the ASME/ANSI chain amount plus the prefi x letter ?¡ãC?¡À. Chains using the ?¡ãheavy?¡À sort side plates use a suffi x letter ?¡ãH?¡À.
Conveyor Series with Large (oversized) Rollers
These chains possess large rollers in order that the chain rolls on the conveyor track reducing friction. Chain numbers are located during the identical way as noted above except the last digit within the chain number is modified from ?¡ã0?¡À to ?¡ã2?¡À which denotes the massive roller.
Sprockets
Usually sprockets must be generated specially for these chains in accordance to your ASME/ANSI B29.3 and B29.4 requirements having said that, for Transmission Series and Conveyor Series with Conventional (small) Rollers, ASME/ANSI B29.one Regular roller chain sprockets may well be used offered the quantity of teeth is 30 or much more.