Double Pitch roller chains are made in accordance with all the ASME/ANSI B29.3 (Transmission Series) and B29.4 (Conveyor Series) American roller chain requirements. In general these chains are equivalent to ASME/ANSI standard items except the pitch is double. They may be out there in Transmission Series, Conveyor Series with Standard (compact) Rollers and Conveyor Series with Big (oversized) Rollers.
Transmission Series
This series is usually employed on drives with slow to moderate speeds, reduced chain loads and lengthy 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 as well as the prefi x letter ?¡ãA?¡À. Note that some firms never use a prefi x letter for this series so the chains may perhaps be represented as A2040, A2050 and so on. or 2040, 2050 and so on.
Conveyor Series with Standard (little) Rollers
This series is usually applied on light to reasonable load material handling conveyors with or without attachment links. The side plate contour is straight for improved sliding properties. Pitch sizes of 1-1/2?¡À and more substantial have ?¡ãHeavy?¡À series link plates (i.e. link plates in the upcoming more substantial chain size. The chain number is found by incorporating 2000 for the ASME/ANSI chain number along with the prefi x letter ?¡ãC?¡À. Chains with all the ?¡ãheavy?¡À kind side plates use a suffi x letter ?¡ãH?¡À.
Conveyor Series with Significant (oversized) Rollers
These chains possess huge rollers so that the chain rolls on a conveyor track decreasing friction. Chain numbers are identified in the same way as mentioned over except that the final digit over the chain quantity is transformed from ?¡ã0?¡À to ?¡ã2?¡À which denotes the huge roller.
Usually sprockets ought to be created specially for these chains according to the ASME/ANSI B29.3 and B29.4 standards on the other hand, for Transmission Series and Conveyor Series with Normal (modest) Rollers, ASME/ANSI Typical roller chain sprockets may perhaps be utilized provided the amount of teeth is thirty or extra.