The smallest chain complying to ANSI is 25 of 6.35 mm pitch. Nevertheless, in response to your demands for smaller chains in recent years for substantial technology machinery this kind of as workplace products, healthcare 
machines and industrial robots, we give 15 of four.7625 mm (3/16 inch) pitch and in addition 15H1 as a high-power version of 15. These substantial precision chains are manufactured beneath extreme high quality management primarily needed for compact sizes, taking dress in resistance also into account.
Choice of chain
Refer to your “Low-speed selection”. However, the chain operation velocity might be set considerably large according to the type of lubrication as proven in the table under.
Connecting back links and offset hyperlinks
R connecting back links are used for compact pitch chains. Nevertheless, because their power is lower than that on the base chain, and since the clip is likely to come off in large velocity operation, the use of connecting backlinks just isn’t advisable. Use a loop chain without the need of attaching connecting back links.
Offset hyperlinks are available for chains other than 15 and 15H1, but their use just isn’t advisable for that identical reason as stated for your R Connecting hyperlinks.
Operating pace and variety of lubrication
15: A substantial precision mini-pitch bushing chain that is smaller sized than a compact drive chain for standard applications, 25
25: Smallest bushing chain between ANSI regular chains utilizing curl bushings.
35: A ANSI normal bushing chain suitable for smaller precision machines that call for substantial power.
