Eagle Industry Co., Ltd.

Ayano Tanishima

Tadatsugu Imura

Yuichiro Tokunaga

Hideyuki Inoue

Yuta Negishi

Yuki Maetani

Takeshi Hosoe

Iwa Ou

Kenta Uchida

Shogo Fukuda

An annular sliding component disposed at a relatively rotating position of a rotating machine and sliding relative to the other sliding component has a sliding surface provided with a dynamic pressure generation groove which includes a communication portion communicating with an external space and a dead-end portion on a relative rotation downstream of the communication portion. The sliding component includes a guide configured to guide a fluid existing in the external space on an upstream side of the communication portion in a guide direction different from a direction in which a peripheral surface of the sliding component formed on the downstream side of the communication portion and facing toward a side of the external space extends.

Sliding component

A pair of sliding components have sliding faces (S) that slide with respect to each other, wherein at least one of the sliding faces (S) includes at least one dimple group () constituted by plural dimples (), and each dimple group () includes at least one opening portion () that is arranged in the one of the sliding faces (S) and radially open to the outside the one of the sliding faces (S). In the sliding components, a dynamic pressure generation mechanism can easily be formed, and a lubricating performance and a sealing performance can improve.

In an exemplary embodiment, a pair of sliding components has sliding surfaces that slide with respect to each other, wherein at least one of the sliding surfaces, sliding surface S, includes a random dimple groupin which plural dimplesare randomly arranged, and the random dimple groupis arranged to be biased in the circumferential direction of the sliding surface S. The sliding components have an improved lubricating property and reliability of a sealing property.

In an exemplary embodiment, a pair of sliding components has sliding surfaces that slide with respect to each other, wherein at least the sliding surface S on one side includes a random dimple groupin which plural dimplesare randomly arranged, and at least one land portionthat partitions radial portionsof the random dimple group. According to the configurations, a lubricating effect and a sealing effect can be improved.

In an exemplary embodiment, a pair of sliding components has annular sliding surfaces that slide with respect to each other in which plural dimplesare arranged on at least sliding surface S on one side, wherein the plural dimplesare randomly arranged to form a random dimple group, and the dimplesare arranged in a manner that a radial-direction coordinate average of centers of the dimplesof the random dimple groupis smaller than a sliding radiusof the sliding surface S.

A pair of sliding parts has sliding faces S that slide with respect to each other in which at least the sliding face S on one side includes dimple groupsformed by arranging plural dimples, and the dimplesare arranged in such a manner that a radial-direction coordinate average of center coordinates of the dimplesof the dimple groupis smaller than a sliding radius Rm of the sliding face S. The sliding parts can improve a characteristic of suctioning from the leakage side to sliding faces, thereby providing excellent sealing property.

Growing community of inventors

Tokyo, Japan

Ayano Tanishima