Hitachi Industrial Products, Ltd.

Jun Ichimura

Naohiko Takahashi

Makoto Hemmi

Motoki Sato

Isao Hagiya

A tilting-pad-type journal bearing includes a rotary shaft, a plurality of tilting pads, a housing, a fixing structure, an oil inlet, and side plates. The plurality of tilting pads support the rotary shaft in a radial direction. The housing accommodates the plurality of tilting pads inside. The fixing structure fixes a circumferential relative position with respect to the housing while allowing the tilting pads to swing. The oil inlet supplies lubricating oil between the tilting pads and the rotary shaft. The side plates are provided on both sides of the housing in a rotational-axis direction.

Tilting-pad-type journal bearing

A tilting pad journal bearing is arranged such that a circumferential relative position of an opening portion of an oil feeding hole to supply lubricant oil to a sliding portion of a bearing pad with respect to the bearing pad differs depending on the position of each bearing pad. For a bearing pad under a rotary shaft which supports the load of the rotary shaft, the circumferential position of an opening portion of an oil feeding hole with respect to the bearing pad is set toward an upstream side of a space between pads in a rotating direction of the rotary shaft. For a bearing pad above the rotary shaft, the circumferential position of an opening portion of an oil feeding hole with respect to the bearing pad is set toward a downstream side of a space between pads in the rotating direction of the rotary shaft.

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Tokyo, Japan

Jun Ichimura