Hitachi Construction Machinery Co., Ltd.

Shuuji Tabata

Kazuhisa Tamura

Nozomu Tanaka

Akio Hoshi

Koji Kawasaki

Yukio Yanagisawa

A swing mechanism for a construction machine having a grease bath seal. A grease bath can be disposed on a vehicular base carrier of the machine, and can be coupled with a swing frame. The grease bath seal can then act to prevent intrusion of pollutants or other foreign materials into the grease bath. The seal may act to prevent intrusion of pollutants or other foreign materials over an extended amount of time and can be arranged in such as manner as to improve the durability and tightness of a seal member.

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Ibaraki, Japan

Shuuji Tabata