Renold has extended its Syno range of non-lube transmission chain with a
polymer bush chain for heavy-duty applications that also requires no
lubrication. The new product features a polymer sleeve that fits between
pin and bush, plus special polymer rollers that offer good impact
resistance and load bearing capabilities. Syno Polymer Bush chain is
available in sizes 1.75 to 2.5in pitch (BS standard) and 1.5 to 2.5in
pitch (ANSI standard).