CHAIN INCLUDING ROLLER SEALING ARRANGEMENT

摘要

A chain equipped with rollers and including roller joint sealing arrangements each comprising the provision of complementary sets of annular grooves (54) in the end faces (42) of a roller (40) and in the inwardly facing surfaces (29) of the sidebars (18,20) of the roller chain. An annular seal member (56) is loosely seated in each complementary set of grooves to form a labyrinth type seal to prevent lubricant efflux from the roller joint (50) and contaminant influx into the roller joint to improve the wear characteristics of the roller joint.