Akụkụ ihe egwu EX40-2 Track roller

Egwu HitachirolaEX40-2 bụ ngwa n'okpuru carriage emebere nke ọma na ihe ngwupụta ihe ngosi Hitachi EX40-2. Isi ọrụ ya bụ ịkwado ịdị arọ nke ahụ onye na-egwupụta ihe, na-eme ka onye na-egwupụta ihe na-eme njem nke ọma n'ọnọdụ dị iche iche. The wheel ahụ ihe bụ n'ozuzu 50Mn, 40Mn2, wdg Mgbe forging, machining na okpomọkụ ọgwụgwọ, na hardness nke wheel elu quenching kwesịrị iru HRC45 ~ 52 iji hụ na ezi abrasion eguzogide na ibu ibu ikike.