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 similar to ASME/ANSI regular goods except that the pitch is double. They are really out there in Transmission Series, Conveyor Series with Normal (tiny) 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 as well as prefi x letter ?¡ãA?¡À. Note that some companies 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 reasonable load materials dealing with conveyors with or without attachment back links. The side plate contour is straight for improved sliding properties. Pitch sizes of 1-1/2?¡À and larger have ?¡ãHeavy?¡À series website link plates (i.e. link plates in the next larger chain dimension. The chain variety is identified by including 2000 on the ASME/ANSI chain quantity plus 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 huge rollers so that the chain rolls on a conveyor track cutting down friction. Chain numbers are discovered within the very same way as noted over except the final digit over the chain number is changed from ?¡ã0?¡À to ?¡ã2?¡À which denotes the massive roller.
On the whole sprockets really should be created 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 Standard (compact) Rollers, ASME/ANSI B29.1 Normal roller chain sprockets could be employed supplied the number of teeth is 30 or more.