Double Pitch roller chains are made in accordance using the ASME/ANSI B29.3 (Transmission Series) and B29.4 (Conveyor Series) American roller chain requirements. Normally these chains are very similar to ASME/ANSI common solutions except the pitch is double. They are really available in Transmission Series, Conveyor Series with Normal (tiny) Rollers and Conveyor Series with Significant (oversized) Rollers.
Transmission Series
This series is usually used on drives with slow to reasonable speeds, low chain loads and extended center distances. Side plates have a fi gure ?¡ã8?¡À contour. The chain amount is obtained by incorporating 2000 to the ASME/ANSI chain quantity and the prefi x letter ?¡ãA?¡À. Note that some corporations tend not to use a prefi x letter for this series so the chains may possibly be represented as A2040, A2050 and so on. or 2040, 2050 and so forth.
Conveyor Series with Normal (little) Rollers
This series is often made use of on light to moderate load material dealing with conveyors with or with no attachment backlinks. The side plate contour is straight for improved sliding properties. Pitch sizes of 1-1/2?¡À and more substantial have ?¡ãHeavy?¡À series hyperlink plates (i.e. link plates with the following greater chain dimension. The chain amount is located by incorporating 2000 to the ASME/ANSI chain amount along with the prefi x letter ?¡ãC?¡À. Chains using the ?¡ãheavy?¡À type side plates use a suffi x letter ?¡ãH?¡À.
Conveyor Series with Substantial (oversized) Rollers
These chains possess large rollers to ensure that the chain rolls on the conveyor track decreasing friction. Chain numbers are located 
within the identical way as mentioned over except the final digit over the chain variety is changed from ?¡ã0?¡À to ?¡ã2?¡À which denotes the substantial roller.
Sprockets
In general sprockets ought to be produced specially for these chains according for the ASME/ANSI B29.three and B29.4 standards nonetheless, for Transmission Series and Conveyor Series with Common (tiny) Rollers, ASME/ANSI B29.1 Regular roller chain sprockets may well be used supplied the amount of teeth is 30 or additional.
