Patent ID: 6074023
Filing Date: 2000-06-13
Classification: B21C,B21D,B62D

Abstract:
A guide roller assembly for crawler type vehicle, having a truck frame, a support shaft fixedly mounted on the truck frame, and a guide roller rotatably fitted on the circumference of said support shaft through a pair of bearings to guide movements of a running crawler belt, said guide roller comprising:an integral unitary body structure of a stepped cylindrical share having a pair of cylindrical end portions formed in axially opposite end portions thereof and accommodating bearings on the inner peripheral side thereof, and a radially bulged center portion formed integrally in an axially intermediate portion between said cylindrical end portions, wherein said guide roller is formed substantially in uniform thickness by a bulging operation throughout said integral unitary body structure including said cylindrical end portions and said radially bulged center portion, and wherein said bearings are each constituted by a sleeve-like spacer member fitted in the inner periphery of one cylindrical end portion of said guide roller, and a sleeve-like bush fitted between and in sliding contact with the inner periphery of said spacer member and the outer periphery of said support shaft.