Patent ID: 9126645
Filing Date: 2015-09-08
Classification: B62D

Abstract:
1. A cartridge for a track chain, comprising: a track pin; a rotatable bushing and a rotatable bearing located on the track pin, the rotatable bushing including a first cutout housing a first seal, and the bearing including a second cutout housing a second seal; a first thrust bearing located on the track pin between the rotatable bearing and the rotatable bushing, the first thrust bearing being configured to contact the rotatable bearing and configured to contact the rotatable bushing, the first thrust bearing being configured to bear thrust loads and not radial loads; a collar located at an end of the track pin, the collar being a solid element having no cutout; and a second thrust bearing located between the rotatable bearing and the collar, the second thrust bearing being configured to contact the rotatable bearing and configured to contact the collar, the second thrust bearing being configured to bear thrust loads and not radial loads, wherein the first seal is located radially outward of the first thrust bearing such that an outer gap exists between an outer surface of the first thrust bearing and the first seal.