The smallest chain complying to ANSI is 25 of 6.35 mm pitch. Nevertheless, in response to the demands for smaller sized chains lately for large technologies machinery such as office gear, medical machines and industrial robots, we provide 15 of 4.7625 mm (3/16 inch) pitch and also 15H1 being a high-power version of 15. These large precision chains are produced under serious good quality control specially needed for modest sizes, taking dress in resistance also into consideration.
Variety of chain
Refer to the “Low-speed selection”. However, the chain operation pace can be set significantly high according to the kind of lubrication as shown from the table below.
Connecting hyperlinks and offset hyperlinks
R 
connecting hyperlinks are applied for small pitch chains. However, considering that their power is reduce than that in the base chain, and because the clip is more likely to come off in large speed operation, the use of connecting links isn’t suggested. Use a loop chain without attaching connecting links.
Offset hyperlinks can be found for chains other than 15 and 15H1, but their use is not advised for the exact same reason as stated to the R Connecting links.
Working velocity and sort of lubrication
15: A high precision mini-pitch bushing chain that is certainly smaller than a compact drive chain for general applications, 25
25: Smallest bushing chain amongst ANSI common chains utilizing curl bushings.
35: A ANSI regular bushing chain suitable for small precision machines that demand large power.