Guide roller assembly for crawler type vehicles and method for forming guide roller

摘要

A guide roller assembly for use in a guide roller mechanism of a crawler type vehicle, including a support shaft (12) fixedly provided on a truck frame (5) and a guide roller (9, 10) rotatably mounted on the support shaft through bearings (15). The guide roller (9, 10) has an integral unitary body structure of a stepped cylindrical shape having a radially bulged portion (16B) formed integrally by plastic deformation in an axially intermediate portion between cylindrical end portions (16A) of a smaller diameter, and having a uniform wall thickness over the entire length of the guide roller (9, 10). The guide roller (9, 10) is improved in strength and can realize a substantial cut in production cost. <IMAGE>