Seal arrangement and link of a chain having the seal arrangement

摘要

A sealing assembly for a track hinge comprises a sealing ring having an annular sealing edge that sealingly abuts on a radially-extending surface of a bushing of the track hinge. An elastic ring fixedly abuts on an outer track link of the track hinge and biases the sealing ring in axial and radial directions. A support ring is disposed radially inward of the sealing ring and is connected at least substantially to a radially-inner surface of the sealing ring. The support ring at least substantially prevents the sealing ring from directly contacting a radially-inner portion of the track hinge at least in the radial direction.

主权项

1. A sealing assembly for sealing between a first portion of a track and a second portion of the track, the first portion being at least pivotable relative to the second portion, the sealing assembly comprising:
a sealing ring configured to seal a lubrication chamber defined at least in part by the first and second portions of the track and having an annular sealing edge configured to sealingly abut on an opposing surface of the second portion, an elastic ring configured to fixedly abut on the first portion and apply pressure onto the sealing ring, and a support ring engaging a radially-inner surface of the sealing ring, wherein the support ring comprises a radially-outwardly extending portion that at least partially encompasses an adjacent axial end of the sealing ring, the support ring being configured to at least substantially prevent a direct contact of the sealing ring with the first portion of the track at least in a radially inward direction, the sealing ring being devoid of any indentation that accommodates at least a portion of the support ring.