| 摘要 |
<p>A track bushing (54, 56) for an endless track (10) of a track type work machine, said bushing (54, 56) having an outer steel sleeve (58, 64) with sufficient thickness and strength to resist impact loading when in use; and - an inner sleeve formed from composite bearing material fixed to the outer steel sleeve (58, 64) and having an internal diameter (62, 68) sized to permit rotation of said track bushing relative to a pin component of the endless track (10) over which said track bushing (54, 56) is positioned.</p> |
