No.1015E 2018Special Edition on Enviromental Technologies Segmented Type Three-row Roller Bearing for Shield Tunneling Machine

Author Industrial Machinery Application Engineering Dept., Bearing Operations Headquarters
Abstract When an expressway is constructed in a metropolitan region, there is a need to reduce impacts on living and natural environments close to the expressway. Accordingly, projects to construct deep underground tunnels (at depths not used for basement or construction of foundation piles) are in progress as an alternative to elevated road structures. For a shield tunneling machine used for deep underground work, JTEKT has developed a segmented type three-row roller bearing with an outer diameter of 7.7 m, one of Japan’s largest bearings.
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