Double Pitch roller chains are created in accordance using the ASME/ANSI B29.three (Transmission Series) and B29.four (Conveyor Series) American roller chain specifications. Generally these chains are comparable to ASME/ANSI normal solutions except the pitch is double. They are obtainable in Transmission Series, Conveyor Series with Standard (little) Rollers and Conveyor Series with Massive (oversized) Rollers.
Transmission Series
This series is usually utilised 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 number is obtained by incorporating 2000 on the ASME/ANSI chain variety as well as the prefi x letter ?¡ãA?¡À. Note that some providers tend not to use a prefi x letter for this series so the chains may perhaps be represented as A2040, A2050 etc. or 2040, 2050 etc.
Conveyor Series with Conventional (tiny) Rollers
This series is usually utilised on light to moderate load material managing conveyors with or with out 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. link plates of the upcoming greater chain size. The chain amount is observed by adding 2000 on the ASME/ANSI chain number plus the prefi x letter ?¡ãC?¡À. Chains together with the ?¡ãheavy?¡À sort side plates use a suffi x letter ?¡ãH?¡À.
Conveyor Series with Large (oversized) Rollers
These chains possess large rollers to ensure the chain rolls on a conveyor track decreasing friction. Chain numbers are observed in the identical way as mentioned over except the final digit around the chain amount is modified from ?¡ã0?¡À to ?¡ã2?¡À which denotes the substantial roller.
Usually sprockets need to be made specially for these chains in accordance to the ASME/ANSI B29.three and B29.four specifications even so, for Transmission Series and Conveyor Series with Regular (tiny) Rollers, ASME/ANSI B29.1 Regular roller chain sprockets could be used presented the number of teeth is thirty or extra.