A sealing device includes a floating ring in a space between the outer circumference of a rotating shaft and the inner circumference of a housing, and a multi-layered cylindrical body including a plurality of elastically deformable cylindrical thin plates layered on top of each other provided between an outer peripheral surface of the floating ring and an inner peripheral surface of the housing, so as to impart a radial restoring force against the eccentricity of the rotating shaft to restore it to its center position, and a tangential damping force to reduce the whirling of the rotating shaft.

Provided are: a lubricating device for a bearing; and an exhaust turbosupercharger, wherein a bearing device (36) is provided with a housing (15) with a hollow shape, and journal bearings (21, 22) which rotatably support a rotary shaft (14) arranged inside the housing (15), the bearing device (36) being further provided with: a third feeding passage (43) and a fourth feeding passage (44) through which lubricant is fed toward outer circumferential surfaces (21b, 22b) of the journal bearings (21, 22); a sixth feeding passage (46) through which lubricant is fed toward a space section (16A) between the journal bearings (21, 22); and a guide section which guides, toward inner circumferential surfaces (21c, 22c) of the journal bearings (21, 22), the lubricant fed from the sixth feeding passage (46) to the space section (16A).

Provided are: a lubricating device for a bearing; and an exhaust turbosupercharger, wherein a bearing device (36) is provided with a housing (15) with a hollow shape, and journal bearings (21, 22) which rotatably support a rotary shaft (14) arranged inside the housing (15), the bearing device (36) being further provided with: a third feeding passage (43) and a fourth feeding passage (44) through which lubricant is fed toward outer circumferential surfaces (21b, 22b) of the journal bearings (21, 22); a sixth feeding passage (46) through which lubricant is fed toward a space section (16A) between the journal bearings (21, 22); and a guide section which guides, toward inner circumferential surfaces (21c, 22c) of the journal bearings (21, 22), the lubricant fed from the sixth feeding passage (46) to the space section (16A).

A bearing device includes: a bearing housing; a floating metal having a cylindrical shape and disposed in a housing hole of the bearing housing and in which a rotational shaft is inserted; and a positioning pin for positioning the floating metal with respect to the bearing housing, the positioning pin being disposed along a radial direction of the rotational shaft. The positioning pin includes a first oil supply hole formed so as to penetrate the positioning pin and communicating with a first space between an inner peripheral surface of the floating metal and an outer peripheral surface of the rotational shaft, and a second oil supply hole formed inside the positioning pin so as to connect a second space to the first oil supply hole, the second space being disposed between an outer peripheral surface of the floating metal and an inner peripheral surface of the housing hole.

A hinged component with one degree of freedom includes at least two concentric rings, movable in rotation in relation to one another around a central axis, defining a friction interface therebetween and including: an outer ring having an inner friction surface and an inner ring having an outer friction surface and an inner friction surface intended to receive a movable member guided by the component in rotation, oscillation and/or translation.

A turbocharger (1A) includes a rotary shaft (2), a journal hearing (5A), and a bearing housing (10). The journal hearing (5A) includes load support surfaces (14 and 15), a first gap forming portion (F1), and a second gap forming portion (F2). The first gap forming portion (F1) firms a first gap (101) in a radial direction between the load support surfaces (14 and 15) adjacent to each other in a direction of a central axis (O). The second gap forming portion (F2) forms a second gap (102) smaller than the first gap in the radial direction between the load support surfaces (14 and 15) adjacent to each other in the direction of the central axis (O).

A bearing comprising an axial channel formed along a longitudinal axis of the bearing having an inner radius comprising an inner surface and an outer radius comprising an outer surface and at least one dam region formed on the inner surface of the inner radius of the channel wherein the dam region comprises a modified crescent shape between 90 and 180 degrees about the longitudinal axis of the channel.

A bearing comprising an axial channel formed along a longitudinal axis of the bearing having an inner radius comprising an inner surface and an outer radius comprising an outer surface and at least one dam region formed on the inner surface of the inner radius of the channel wherein the dam region comprises a modified crescent shape between 90 and 180 degrees about the longitudinal axis of the channel.

Bearing members, such as journal bearings, and turbine assemblies for use in high speed, high horsepower applications (e.g., turbochargers, jet engines, internal combustion engines, blowers, steam turbines, compressors, and pumps) including a rotatable shaft, a compressor wheel coupled to the shaft (e.g., at one end), a turbine wheel spaced from the compressor wheel, the turbine wheel also being coupled to the shaft (e.g., at another end), and at least one bearing member having a superhard bearing surface.

A turbocharger includes: a bearing; a bearing wall portion having a bearing hole in which the bearing is arranged; a separation wall portion, which is provided on a radially outer side of the bearing hole with respect to the bearing wall portion, and forms an internal space with the bearing wall portion; an oil discharge port, which is formed in the separation wall portion, and communicates with the internal space; and a guide portion, which is provided to the bearing wall portion facing the internal space, and separates away from the oil discharge port in a direction of a plane perpendicular to a center axis of the bearing as approaching the oil discharge port in a direction of the center axis.