Double Pitch roller chains are developed in accordance using the ASME/ANSI B29.three (Transmission Series) and B29.4 (Conveyor Series) American roller chain standards. Usually these chains are equivalent to ASME/ANSI common solutions except that the pitch is double. They can be readily available in Transmission Series, Conveyor Series with Standard (tiny) Rollers and Conveyor Series with Substantial (oversized) Rollers.
Transmission Series
This series is often utilized on drives with slow to reasonable speeds, low chain loads and long center distances. Side plates possess a fi gure ?¡ã8?¡À contour. The chain quantity is obtained by including 2000 towards the ASME/ANSI chain quantity as well as prefi x letter ?¡ãA?¡À. Note that some organizations tend not to use a prefi x letter for this series so the chains may possibly be represented as A2040, A2050 and so forth. or 2040, 2050 and so forth.
Conveyor Series with Regular (smaller) Rollers
This series is often used on light to reasonable load material dealing with conveyors with or devoid of 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. hyperlink plates of the next greater chain size. The chain number is identified by adding 2000 on the ASME/ANSI chain variety as well as prefi x letter ?¡ãC?¡À. Chains together with the ?¡ãheavy?¡À type side plates use a suffi x letter ?¡ãH?¡À.
Conveyor Series with Huge (oversized) Rollers
These chains possess massive rollers in order that the chain rolls on a conveyor track lowering friction. Chain numbers are located during the similar way as mentioned over except that the final digit within the chain number is transformed from ?¡ã0?¡À to ?¡ã2?¡À which denotes the significant roller.
Generally sprockets really should be generated specially for these chains according to the ASME/ANSI B29.three and B29.four requirements nonetheless, for Transmission Series and Conveyor Series with Standard (little) Rollers, ASME/ANSI B29.1 Conventional roller chain sprockets could be made use of supplied the quantity of teeth is 30 or additional.