ASSEMBLY-PROCEDURE AND RELATIVE HINGE-ASSEMBLY FOR USE WITH LUBRICATED-TYPE CRAWLER TRACKS

摘要

The hinge assembly includes a hinge pin (2) having a smooth cylindrical outer surface (22), and a sleeve (3) disposed coaxially about the pin central section. The sleeve has a smooth inner cylindrical surface (32) to pair (in rotation) with the outer surface (22) of the pin. The assembly also has two thrust rings (7), each having a smooth, cylindrical inner surface for force fitting to the similar surface of the pin, adjacent to the respective butt-end (33) of the sleeve. Each ring has an annular protrusion which partly defines a housing to receive a seal (10). The seal is located coaxially about the pin, to retain lubricant at the butt-ends of the sleeve.