scope:

1 Scope

1.1 COVERAGE

This specification covers standard and heavy series roller chains for oil-field applications, including chain designation, chain length tolerance, tensile strength specifications, pin and bushing press-out specifications, and dynamic test requirements.

For informational purposes, appendices have been included on recommendations for installation, lubrication, and maintenance of oil-field chain drives and a basic description of roller chain sprockets.

1.2 POLICY

American Petroleum Institute (API) specifications are published as an aid to procurement of standardized equipment and materials. It must be noted that this specification goes beyond the requirements of other existing standards and specifications but does not preclude any party from manufacturing chains that meet the requirements of API Spec 7F.