A rolling bearing (10) includes: an outer ring (1) having an outer ring track surface (1a); an inner ring assembled to the outer ring (1) and having an inner ring surface (3a) opposite to the outer ring track surface (1a); and a plurality of rolling elements (5) rotatably incorporated between the outer ring track surface (1a) and the inner ring track surface (3a), in which the rolling element (5) is made of stainless steel, and the surface roughness Ra of the rolling element (5) is 0.01 m or less.

A hub bearing 1 including an outer ring 2 that serves as a stationary side raceway ring, a hub wheel 3 and an inner ring 5 serving as a rotatable side raceway ring, balls 4 serving as a plurality of rolling elements disposed between a raceway surface of the stationary side raceway ring and a raceway surface of the rotatable side raceway ring, and grease that lubricates a rolling contact part between each of the raceway surfaces and the rolling elements. The surface roughness of at least one raceway surface selected from the raceway surface of the stationary side raceway ring and the raceway surface of the rotatable side raceway ring in the rolling contact part is 0.03 m Ra or less.

A bearing assembly is disclosed having a wearing surface formed from an alloying including tin, a wear material configured to be contacted by the wearing material during use, and the wear material having a smoothed surface. A method of providing superlubricious performance of a bearing assembly is also provided.

An inner ring has a rib face as a concave surface that is formed on the larger diameter side of an inner ring and that contacts large end faces of tapered rollers. A tapered roller bearing satisfies Ri>RRr, where Rr represents a curvature radius of the large end face, Ri represents a curvature radius of the rib face 8 in a longitudinal section of the inner ring 2, R represents a distance from a cone center to a reference point. The distance R is the distance from the cone center to the reference point, where the reference point is the intersection of the rib face and an imaginary line extending from the cone center and along an inner ring raceway surface in the longitudinal section of the inner ring 2. Surface roughness of the rib face is greater than that of the large end face.

Technology is described for an antiwetting coating attached to a substrate (e.g., metal substate) on a liquid metal container. In one example, the liquid metal container includes a first enclosure member, a second enclosure member, liquid metal, and an antiwetting coating. The first enclosure member includes a first substrate with a first surface. The second enclosure member includes a second substrate with a second surface. The first enclosure member is positioned proximate to the second enclosure member such that a gap is formed between the first surface and the second surface. The liquid metal positioned within the gap. An antiwetting coating attached to the first surface and/or the second surface. The antiwetting coating includes chromium nitride (CrN), dichromium nitride (Cr.sub.2N), chromium (III) oxide (Cr.sub.2O.sub.3), and/or titanium aluminum nitride (TiAlN) attached to the first surface and/or the second surface.

A bearing comprising a plurality of rolling elements arranged between an inner and outer raceway thereof. A rolling contact interface is between a first rolling contact surface on at least one rolling element and a second rolling contact surface formed by one of the inner and outer raceways. The first rolling contact surface has a first RMS roughness R.sub.q1 and a first roughness pattern .sub.1, expressed in terms of the Peklenik number . The second rolling contact surface has a second RMS roughness R.sub.q2 and a second roughness pattern .sub.2. To minimize micropitting in the bearing, the rolling contact interface has a surface topography wherein (a) the roughness pattern of the first and second rolling contact surfaces are oriented in the direction of rolling, whereby .sub.13.0 and .sub.210.0; and (b) the first and of the second rolling contact surfaces have substantially equal roughness heights, whereby 0.8R.sub.q1/R.sub.q21.25.

A bearing element may include a bearing substrate and a sliding layer of a sliding layer material. The sliding layer material may include a polymeric material and nanodiamonds. The nanodiamonds may also be surface-functionalised nanodiamonds. The bearing element may be suitable for automotive applications, including, but not limited, use within automotive engines.

A bearing element (1) for a plain or antifriction bearing is provided, the bearing element (1) being formed of or including at least sectionally a powder-metallurgical composite material which includes a metallic binder phase and a hard material phase, wherein the metallic binder phase is based on at least one element from the following group: chromium, cobalt, molybdenum, nickel, titanium.

A turbine thrust shaft providing a thrust disk having a surface P and a surface Q, and a shaft body formed through the thrust disk, the shaft body including a first plurality of holes, wherein the first plurality of holes are spaced apart and each hole of the first plurality of holes has a first diameter between 0.0600 inches to 0.0680 inches and has a first center disposed a first distance between 0.1400 inches to 0.1600 inches from surface P, and a second plurality of holes wherein the second plurality of holes are spaced apart and each hole of the second plurality of holes has a second diameter between 0.0960 inches to 0.1040 inches and has a second center disposed a second distance between 2.1350 inches to 2.1550 inches from surface Q.

A stack bearing assembly is provided having stacked bearing rings and bearing balls located between the rings in races. The bearing balls are formed from 100Cr6 steel that is carbonitrided. After carbonitriding, the bearing balls are polished. The carbonitrided and polished bearing balls are assembled in the races of the bearing rings to provide increased resistance to wear from the debris traveling through the bearing assembly in use, and increase toughness in order to withstand the wear caused by debris in a drilling rig. A method of producing a stack bearing assembly is also provided.