Double Pitch roller chains are made in accordance together with the ASME/ANSI B29.three (Transmission Series) and B29.4 (Conveyor Series) American roller chain specifications. In general these chains are comparable to ASME/ANSI regular items except the pitch is double. These are accessible in Transmission Series, Conveyor Series with Regular (tiny) Rollers and Conveyor Series with Significant (oversized) Rollers.
Transmission Series
This series is often used on drives with slow to moderate speeds, very low chain loads and long center distances. Side plates have a fi gure ?¡ã8?¡À contour. The chain amount is obtained by including 2000 to the ASME/ANSI chain variety as well as prefi x letter ?¡ãA?¡À. Note that some providers do not use a prefi x letter for this series so the chains may well be represented as A2040, A2050 and so on. or 2040, 2050 and so forth.
Conveyor Series with Regular (smaller) Rollers
This series is usually made use of on light to reasonable load materials managing conveyors with or with out 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 link plates (i.e. website link plates from the next more substantial chain size. The chain quantity is found by adding 2000 on the ASME/ANSI chain quantity and the prefi x letter ?¡ãC?¡À. Chains using the ?¡ãheavy?¡À form side plates use a suffi x letter ?¡ãH?¡À.
Conveyor Series with Significant (oversized) Rollers
These chains possess massive rollers to ensure the chain rolls on the conveyor track minimizing friction. Chain numbers are discovered in the similar way as mentioned above except that the final digit on the chain quantity is modified from ?¡ã0?¡À to ?¡ã2?¡À which denotes the massive roller.
On the whole sprockets really should be produced specially for these chains in accordance for the ASME/ANSI B29.three and B29.four specifications nonetheless, for Transmission Series and Conveyor Series with Typical (small) Rollers, ASME/ANSI B29.1 Typical roller chain sprockets may well be employed provided the number of teeth is 30 or much more.