Swivel joints for vehicle track support frame - with sealed cover around swivel pin ball section replaceable as unit

摘要

A sealed swivel bearing links the support frame of the vehicle tracks with the tilt levers linked to the chassis. One end of the support frame pivots about a transverse horizontal axis, while the other end is linked to the chassis by the tilt levers. The swivel pin is secured with each end in the support frame and has a central, spherical bearing which is enclosed in a housing linked to the tilt levers. The pin is sealed in the housing by wide lips under which sealing plates cover sealing O-rings. The whole swivel bearing is sealed for life and can be fitted as a replacement unit without having to rebuild the bearing.