Renold 20B-2 Duplex Roller Chain, 3m, Renold (Blue Box)

Range of Renold SD economy Duplex roller chain, for standard duty applications. Conforms to European (BS) standards

European standard chains are covered by DIN8187 and ISO606 standards. There are 3 versions:

• Simplex

Pitch size varies between 4 mm to 114.3 mm, with the chain links having a large pin diameter. The chains therefore have better wear resistance due to the bearing area being of a greater size.

The ISO standard has a simple numbering system:

• The first two digits are the pitch size and are measured in 1/16 s of an inch, for example 08 = 8/16