The smallest chain complying to ANSI is 25 of 6.35 mm pitch. Nonetheless, in response towards the demands for smaller sized chains in recent years for large technological innovation machinery such as office products, health-related machines and industrial robots, we present 15 of four.7625 mm (3/16 inch) pitch and in addition 15H1 being a high-power edition of 15. These higher precision chains are produced under serious top quality handle in particular expected for modest sizes, taking wear resistance also into consideration.
Choice of chain
Refer to your “Low-speed selection”. Even so, the chain operation velocity can be set significantly large based upon the type of lubrication as proven during the table beneath.
Connecting hyperlinks and offset back links
R connecting hyperlinks are utilized for smaller pitch chains. 
Nonetheless, due to the fact their power is reduced than that of the base chain, and because the clip is more likely to come off in large speed operation, using connecting hyperlinks is not really suggested. Use a loop chain without attaching connecting links.
Offset hyperlinks can be found for chains besides 15 and 15H1, but their use just isn’t recommended for your very same explanation as stated for the R Connecting links.
Working speed and sort of lubrication
15: A large precision mini-pitch bushing chain that’s smaller sized than a compact drive chain for general applications, 25
25: Smallest bushing chain among ANSI standard chains using curl bushings.
35: A ANSI common bushing chain ideal for compact precision machines that need large power.
