Patent ID: 7240973
Filing Date: 2007-07-10
Classification: B62D

Abstract:
1. A crawler comprising a cylindrical crawler bush surface-hardened on its outer circumference or on its outer circumference and its inner circumference; a crawler pin arranged on the inner circumference of said crawler bush; and a metal member formed of at least one layer arranged in a clearance formed between said crawler bush and said crawler pin, wherein said at least one layer of said metal member is a metallic sliding member having a structure capable of holding lubricating oil and/or a lubricant, said crawler pin outer circumference or said crawler bush inner circumference is grooved, and said metallic sliding member to be used is shaped to have a contour along the groove shape, so that the metallic sliding member is prevented from axially coming out from the clearance formed between the crawler bush and the crawler pin when the crawler runs.