Renold has always been at the cutting edge of transmission chain development and produces all of its products to the relevant ISO 606, DIN and ANSI standards.

Around 92% of transmission chain sold in Europe is ISO standard. ANSI, the American National Standards Institute standards are also covered in ISO 606

European Standard Numbering System

• Numbering system explains pitch and number of strands
• E.g. half inch pitch chain is 08B-1 or 08A-1
• The 1st two digits are the pitch size in 1/16th of an inch, therefore 8/16th = half an inch
• The B indicates European Standard
• The A indicates ANSI Standard
• The 1 indicates a single strand (simplex chain)
• The 2 indicates a double strand (duplex chain)
• The 3 indicates a triple strand (triplex chain)

ANSI

• Numbering system explains pitch and number of strands
• Half inch pitch chain is 40-1
• The 1st digit is the pitch size in 1/8th of an inch, therefore 4/8th = half an inch
• The 0 indicates that it's a roller chain (a bush chain would feature a 5).
• The 1 indicates a single strand (simplex chain)

DIN

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