Abstract: A sliding component capable of maintaining high lubricity for a long period of time by efficiently using a liquid supplied between sliding surfaces is provided. An annular recess portion opening radially over the entire circumference is formed on an inner radial side or an outer radial side of at least one of a pair of sliding surfaces of the sliding component and a supply groove communicating with the annular recess portion and extending radially on the sliding surfaces is formed on at least one of the pair of sliding surfaces.

Abstract: Provided is a sliding component having a small starting torque during a start operation. In a sliding component which is disposed at a relatively rotating position of a rotating machine and slides relative to the other sliding component, the sliding component is provided with a storage space which is formed on a back surface side of a sliding surface of the sliding component and into which a fluid is introduced and a plurality of through-holes which communicate with the storage space and have openings opened at the sliding surface on a side opposite to the storage space.

Abstract: A sliding component includes a dynamic pressure generation groove configured for generating dynamic pressure on a sliding surface, which groove includes an introduction port formed in one end side of the groove in a circumferential direction and which is open to a sealing target fluid H side, a throttle portion communicating with the introduction port and having a narrowed flow path, and a lead-out port formed on the other end side of the groove, which communicates with the throttle portion and which is open to the sealing target fluid side.

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 surface of a second sliding component is provided with a plurality of second positive pressure generation grooves communicating with a leakage side space, extending in a relative rotation direction of the second sliding component, and having closed terminating end portions, a sliding surface of a first sliding component is provided with a plurality of first positive pressure generation grooves communicating with the leakage side space, extending in a relative rotation direction of the second sliding component, and having closed terminating end portions, and the sliding surface and the sliding surface slide on each other at least in such a manner that the first positive pressure generation grooves and the second positive pressure generation grooves overlap and intersect with each other.

Abstract: A sliding component includes a plurality of dynamic pressure generation mechanisms circumferentially arranged on a sliding surface of the sliding component. Each dynamic pressure generation mechanism includes an introduction groove portion communicating with a sealing target fluid side through an opening portion of the introduction groove portion and a dynamic pressure generation groove portion communicating with the introduction groove portion and extending in a circumferential direction in which the sliding component is relatively rotated with respect to a mating sliding component. The introduction groove portion is partially defined by a boundary wall positioned between the introduction groove portion and the dynamic pressure generation groove portion. The boundary wall has an inclined surface where at least a portion of the boundary wall positioned on a side of the opening portion extends toward the sealing target fluid side and inclined to a side of the dynamic pressure generation groove portion.

Abstract: 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 group 11 in which plural dimples 10 are randomly arranged, and the random dimple group 11 is 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.

Abstract: A sliding component includes a dynamic pressure generation groove configured for generating dynamic pressure on a sliding surface, which groove includes an introduction port formed in one end side of the groove in a circumferential direction and which is open to a sealing target fluid H side, a throttle portion communicating with the introduction port and having a narrowed flow path, and a lead-out port formed on the other end side of the groove, which communicates with the throttle portion and which is open to the sealing target fluid side.

Abstract: 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 group 11 in which plural dimples 10 are randomly arranged, and at least one land portion 15 that partitions radial portions 11a, 11b of the random dimple group 11. According to the configurations, a lubricating effect and a sealing effect can be improved.

Abstract: In an exemplary embodiment, a pair of sliding components has annular sliding surfaces that slide with respect to each other in which plural dimples 10 are arranged on at least sliding surface S on one side, wherein the plural dimples 10 are randomly arranged to form a random dimple group 11, and the dimples 10 are arranged in a manner that a radial-direction coordinate average of centers of the dimples 10 of the random dimple group 11 is smaller than a sliding radius 15 of the sliding surface S.

Abstract: In an exemplary embodiment, a sliding component includes a pair of sliding parts 3 and 5 sliding relative to each other, with a high-pressure gas present on one side of the pair of sliding parts 3 and 5 and a low-pressure liquid on the other side. At least the sliding part 5 has a sliding face S provided with positive pressure generation mechanisms 10 each having a positive pressure generation groove 11, and provided with an annular deep groove 14 on the high-pressure gas side. The annular deep groove 14 is isolated from the high-pressure gas side by a land R, and is connected to the low-pressure liquid side through radial deep grooves 13. The sliding component is capable of fulfilling both conflicting conditions of sealing and lubrication, with a gas on the high-pressure fluid side and a liquid on the low-pressure fluid side.

Abstract: 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 groups 20 formed by arranging plural dimples 10, and the dimples 10 are arranged in such a manner that a radial-direction coordinate average of center coordinates of the dimples 10 of the dimple group 20 is 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.

Abstract: 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 group 11 in which plural dimples 10 are randomly arranged, and the random dimple group 11 is 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.

Abstract: 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 group 11 in which plural dimples 10 are randomly arranged, and at least one land portion 15 that partitions radial portions 11a, 11b of the random dimple group 11. According to the configurations, a lubricating effect and a sealing effect can be improved.

Abstract: 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 groups 20 formed by arranging plural dimples 10, and the dimples 10 are arranged in such a manner that a radial-direction coordinate average of center coordinates of the dimples 10 of the dimple group 20 is 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.

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: In an exemplary embodiment, a pair of sliding components has annular sliding surfaces that slide with respect to each other in which plural dimples 10 are arranged on at least sliding surface S on one side, wherein the plural dimples 10 are randomly arranged to form a random dimple group 11, and the dimples 10 are arranged in a manner that a radial-direction coordinate average of centers of the dimples 10 of the random dimple group 11 is smaller than a sliding radius 15 of the sliding surface S. The sliding components are excellent in a sealing property by improving a characteristic of suctioning from the leakage side to sliding surfaces.

Abstract: In an exemplary embodiment, a sliding component includes a pair of sliding parts 3 and 5 sliding relative to each other, with a high-pressure gas present on one side of the pair of sliding parts 3 and 5 and a low-pressure liquid on the other side. At least the sliding part 5 has a sliding face S provided with positive pressure generation mechanisms 10 each having a positive pressure generation groove 11, and provided with an annular deep groove 14 on the high-pressure gas side. The annular deep groove 14 is isolated from the high-pressure gas side by a land R, and is connected to the low-pressure liquid side through radial deep grooves 13. The sliding component is capable of fulfilling both conflicting conditions of sealing and lubrication, with a gas on the high-pressure fluid side and a liquid on the low-pressure fluid side.