Hitachi Construction Machinery Co., Ltd.

Kentaro Kamakura

Junya Kawamoto

Kohei Maeda

A hydraulic oil tank capable of assuring strength at a gage installation part and bringing a gage close to a hole portion of an exterior cover while maintaining a predetermined clearance between the exterior cover and the hydraulic oil tank is provided. The hydraulic oil tank, mounted on a swing frame of a hydraulic excavator upperstructure, has a side wall opposing an upperstructure exterior cover with a predetermined clearance, and is adapted to store hydraulic oil to be fed to hydraulic actuators. The hydraulic oil tank has a gage enabling a visual check on the hydraulic oil level in the tank through a hole portion in the exterior cover. The gage is installed in the tank side wall, with an internally-hollow protruding portion protruding toward the exterior cover hole portion and a transparent window portion arranged at an end of the protruding portion.

Growing community of inventors

Tsuchiura, Japan

Kentaro Kamakura