The smallest chain complying to ANSI is 25 of 6.35 mm pitch. However, in response for the demands for smaller chains lately for high technological innovation machinery such as workplace gear, healthcare machines and industrial robots, we present 15 of four.7625 mm (3/16 inch) pitch and in addition 15H1 as being a high-power version of 15. These high precision chains are manufactured below severe high-quality control specially required for smaller sizes, taking wear resistance also into account.
Choice of chain
Refer to the “Low-speed selection”. Even so, the chain operation speed is often set significantly higher depending on the kind of lubrication as shown in the table beneath.
Connecting backlinks and offset hyperlinks
R connecting hyperlinks are used for smaller pitch chains. Nevertheless, due to the fact their power is lower than that of your base chain, and since the clip 
is more likely to come off in high pace operation, the use of connecting hyperlinks is not advised. Use a loop chain without having attaching connecting back links.
Offset hyperlinks can be found for chains besides 15 and 15H1, but their use will not be recommended for the exact same explanation as stated for that R Connecting back links.
Operating speed and form of lubrication
15: A substantial precision mini-pitch bushing chain that’s smaller sized than a compact drive chain for general applications, 25
25: Smallest bushing chain between ANSI typical chains making use of curl bushings.
35: A ANSI common bushing chain appropriate for modest precision machines that demand higher strength.
