The smallest chain complying to ANSI is 25 of 6.35 mm pitch. Nonetheless, in response for the demands for smaller chains lately for high technologies machinery such as office tools, medical machines and industrial robots, we provide 15 of four.7625 mm (3/16 inch) pitch as well as 15H1 as a high-power edition of 15. These large precision chains are produced beneath serious high quality control 
particularly needed for compact sizes, taking wear resistance also into account.
Collection of chain
Refer to the “Low-speed selection”. However, the chain operation pace may be set considerably high dependant upon the type of lubrication as proven from the table below.
Connecting links and offset backlinks
R connecting hyperlinks are used for tiny pitch chains. Even so, because their strength is lower than that of the base chain, and because the clip is more likely to come off in substantial pace operation, using connecting hyperlinks is not really suggested. Use a loop chain with no attaching connecting hyperlinks.
Offset links are available for chains apart from 15 and 15H1, but their use just isn’t proposed to the very same motive as stated for that R Connecting links.
Operating pace and style of lubrication
15: A substantial precision mini-pitch bushing chain that may be smaller than a compact drive chain for general applications, 25
25: Smallest bushing chain amid ANSI conventional chains employing curl bushings.
35: A ANSI typical bushing chain suitable for little precision machines that require large power.