Offset links (used to shorten or lengthen a chain strand by 1 pitch) are also available and sold separately.1 American roller chain standard. The link plates of the heavy series are one size thicker than standard roller chains providing additional strength in heavy duty applications.Solid cold forged bushings extend chain wear life and greatly reduce break-in wear.
The special coating is hexavalent chromium free and provides excellent resistance to corrosive attack in many moderately corrosive applications. 40Pcp Perfect Coat Plus Ol Cp ASME/ANSI Std Chain Sgl 1/2" Pit,PK5 They are also used to reduce the length of a strand by one pitch when normal chain elongation has created excess catenary sag on a roller chain drive. Care however should be taken as the offset link has significantly less load carrying capacity than the base chain itself.1 American roller chain standard.