ANSI CHAINS FOR CONVEYORS

ANSI chain requires consistent lubrication to maintain the pin-bushing interface and prevent accelerated wear. The bushing bore and pin surface are the primary wear zones. Insufficient lubrication at this interface causes metal-to-metal contact, generating heat and removing material faster than any other failure mode. Pivot arm drives operating outdoors or near bulk material are also vulnerable to contamination, which abrades the pin-bushing joint even when lubrication is nominally adequate.

Manual lubrication on a defined interval is sufficient for low-cycle pivot drives, but a conveyor oiler provides more consistent film coverage and reduces the risk of missed service intervals.

Fluent's radial stacker builds can be equipped with an oiler on the ANSI chain drive as part of the original system or added later.

Chain wear manifests as elongation. As pins and bushings wear, the effective pitch of each link increases incrementally; eventually, the chain no longer seats correctly on the sprocket. The industry standard wear limit is 3% elongation over a reference length, measured with a dedicated chain wear indicator or a steel rule over a sufficient number of links to average out variation. At or before that threshold, the chain should be replaced.

Sprocket teeth wear in a pattern matched to the worn chain. Installing a new chain on worn sprockets accelerates wear on the new chain and shortens its service life. We recommend replacing the chain and sprockets together.

See ANSI sprockets for matching sprocket replacement, or how to replace an ANSI chain for a step-by-step guide.