Abstract: A sliding component includes: a dynamic pressure generation groove provided in a sliding surface of the sliding component, the dynamic pressure generation groove having a first end forming a closed end and a second end forming an inlet communicating with any one side of a sealed fluid side and a leakage side in a radial direction; and a deep groove provided in the sliding surface and deeper than the dynamic pressure generation groove, an inlet 16a of the deep groove communicating with an inlet of the dynamic pressure generation groove on a side of a side wall of the dynamic pressure generation groove, the side wall being circumferentially opposite to a dynamic pressure generation wall constituting another side wall of the dynamic pressure generation groove.

Abstract: Provided is a sliding component capable of reducing the frictional resistance of a sliding surface entailing eccentric rotation. A sliding component is formed in an annular shape and has a sliding surface relatively sliding with eccentric rotation. A plurality of grooves not communicating with spaces on the inner and outer diameter sides of the sliding component are circumferentially provided in the sliding surface.

Abstract: A sliding component has an annular shape with a fluid facing inside and outside of the sliding component and has a sliding surface relatively sliding with eccentric rotation, in which the sliding surface includes a land and a plurality of dynamic pressure generation mechanisms arranged in a circumferential direction, the dynamic pressure generation mechanism includes a shallow groove portion and a deep groove portion, the shallow groove portion communicates with the deep groove portion, and a communication passage providing a communication between the deep groove portion and either an inside space or an outside space of the sliding component is formed in the sliding component.

Abstract: A sliding component capable of improving lubricity between sliding surfaces is provided. In a sliding component 10 which is disposed at a relatively rotating position of a rotary machine and relatively slides on a counter sliding component 20, a sliding surface 11 of the sliding component 10 is provided with a plurality of protrusions 30. A groove 14 is formed between the adjacent protrusions 30 so as to be continuous from a sealing side S1 to a leakage side S2.

Abstract: To provide sliding components capable of suppressing dynamic pressure generation mechanisms from being deformed and damaged due to wear of sliding surfaces. In a pair of sliding components which is disposed at a relatively rotating position of a rotary machine, has a plurality of dynamic pressure generation mechanisms formed in a sliding surface of the sliding component by recessed portions, and is formed in an annular shape to seal a sealed fluid by sliding the sliding surfaces of the sliding components. A surface region in the periphery of the recessed portions of the sliding component is formed to be separated from an opposite region of the sliding component.

Abstract: A sliding surface of an annular sliding component disposed at a relatively rotating position of a rotating machine is provided with a plurality of dynamic pressure generating groove groups arranged in a circumferential direction, each including a plurality of dynamic pressure generating grooves having a start point opening to one radial edge of the sliding surface S and an end point closing within the sliding surface while extending circumferentially, in the circumferential direction.

Abstract: To provide sliding components capable of suppressing dynamic pressure generation mechanisms from being deformed and damaged due to wear of sliding surfaces. In a pair of sliding components which is disposed at a relatively rotating position of a rotary machine, has a plurality of dynamic pressure generation mechanisms formed in a sliding surface of the sliding component by recessed portions, and is formed in an annular shape to seal a sealed fluid by sliding the sliding surfaces of the sliding components. A surface region in the periphery of the recessed portions of the sliding component is formed to be separated from an opposite region of the sliding component.

Abstract: Provided is a sliding component capable of stably reducing the frictional resistance of a sliding surface entailing eccentric rotation. A sliding component has a sliding surface relatively sliding with eccentric rotation, in which the sliding surface includes a land and a plurality of dynamic pressure generation mechanisms arranged in a circumferential direction, the dynamic pressure generation mechanism includes a shallow groove portion and a deep groove portion, and the shallow groove portion surrounds a circumference of the deep groove portion and communicates with the deep groove portion.

Abstract: Provided is a sliding component capable of stably reducing the frictional resistance of a sliding surface entailing eccentric rotation. A sliding component has an annular shape with high-pressure and low-pressure fluids facing inside and outside of the sliding component and has a sliding surface relatively sliding with eccentric rotation. The sliding surface is provided with a plurality of high-pressure grooves open to a space in which the high-pressure fluid exists and a plurality of low-pressure grooves open to a space in which the low-pressure fluid exists. The high-pressure and low-pressure grooves are arranged in a circumferential direction.

Abstract: A sliding component has an annular shape with a fluid facing inside and outside of the sliding component and has a sliding surface relatively sliding with eccentric rotation, in which the sliding surface includes a land and a plurality of dynamic pressure generation mechanisms arranged in a circumferential direction, the dynamic pressure generation mechanism includes a shallow groove portion and a deep groove portion, the shallow groove portion communicates with the deep groove portion, and a communication passage providing a communication between the deep groove portion and either an inside space or an outside space of the sliding component is formed in the sliding component.

Abstract: 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 (11) constituted by plural dimples (12), and each dimple group (11) includes at least one opening portion (11a) 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.

Abstract: A sliding component includes a pair of the sliding members being slidable relative to each other on sliding surfaces of the sliding members. One of the sliding surfaces includes a dimple group in which a plurality of dimples is arranged and each of the dimples has an opening portion whose shape has a long axis and a short axis orthogonal to the long axis. The dimple group includes a clockwise dimple group in which the dimples are arranged in a clockwise direction from an inner diameter side to an outer diameter side of the sliding surface and a counterclockwise dimple group in which the dimples are arranged in a counterclockwise direction from the inner diameter side to the outer diameter side of the one of the sliding surfaces.

Abstract: A sliding component includes a pair of sliding members being slidable relative to each other on sliding surfaces of the sliding members. In the sliding component, one of the sliding surfaces includes a dimple group in which a plurality of dimples is arranged. Each of the dimple has an opening portion whose shape has a long axis and a short axis orthogonal to the long axis. In the dimple group, the dimples are arranged along a curve having a curvature different from a curvature of a circumference of the one of the sliding surfaces.

Abstract: Provided is a seal ring configured so that stable lubrication performance can be provided across a wide range of rotation speed. A seal ring for sealing a clearance between a rotary shaft and a housing includes inclined grooves formed at a sliding surface so as to be arranged in a circumferential direction, the inclined grooves being open on an outer diameter side of the seal ring to generate a drawing pressure. The seal ring further includes supply grooves being open on a sealed fluid side of the seal ring and extending in a radially outward direction toward inner diameter sides of the inclined grooves.

Abstract: Low-torque sliding components have sliding surfaces rotated relative to each other with an annular mating ring and an annular seal ring facing each other. The sliding surface of at least one of the mating ring and the seal ring has therein a plurality of multi-stepped recess portions formed in a circumferential direction. Relative rotation and sliding of the mating ring and the seal ring causes the multi-stepped recess portions to generate a dynamic pressure, and the multi-stepped recess portion is formed in a stepwise shape in a cross-sectional view by a dynamic pressure recess portion and a static pressure recess portion with the dynamic pressure recess portion surrounding the static pressure recess portion deeper than the dynamic pressure recess portion.

Abstract: A sliding component includes a pair of sliding members being slidable relative to each other on sliding surfaces of the sliding members. One of the sliding surfaces includes a dimple group in which dimples are arranged in a radial direction and a circumferential direction, each of the dimples having an opening portion whose shape has a long axis and a short axis orthogonal to the long axis. A dimple angle formed by a radial axis passing through an intersection of the long axis and the short axis of the dimple and a rotational center of the sliding surface and the long axis changes in at least one of the radial direction and the circumferential direction of the one of the sliding surfaces.

Abstract: An annular sliding component has a sliding surface relatively sliding with eccentric rotation. The sliding surface is provided with a plurality of grooves each of which is open to a fluid space on at least one of an inner diameter side and an outer diameter side of the sliding surface and arranged in a circumferential direction. The groove is partially defined by a first side wall surface formed along the circumferential direction of the sliding surface and a second side wall surface connected to the first side wall surface and formed along a radial direction of the sliding surface.

Abstract: Provided is a sliding component capable of reducing the frictional resistance of a sliding surface entailing eccentric rotation. An annular sliding component has a sliding surface relatively sliding with eccentric rotation. A plurality of grooves open to a fluid space on the inner diameter side are circumferentially provided in the sliding surface. A side wall surface of the groove is configured by a wall surface continuous in a circular arc shape in a plan view.

Abstract: Provided is a sliding component capable of reducing the frictional resistance of a sliding surface entailing eccentric rotation. A sliding component is formed in an annular shape and has a sliding surface relatively sliding with eccentric rotation. A plurality of grooves not communicating with spaces on the inner and outer diameter sides of the sliding component are circumferentially provided in the sliding surface.

Abstract: Provided is a seal ring configured so that stable lubrication performance can be provided across a wide range of rotation speed. A seal ring for sealing a clearance between a rotary shaft and a housing includes multiple static pressure grooves provided at a sliding surface of the seal ring and arranged in a circumferential direction, the static pressure grooves being opened on a sealed fluid side and closed on an outer diameter side, a circumferential length of each of the static pressure grooves being shorter than a radial length of each of the static pressure grooves.