A plain bearing includes a metal outer ring having an inner surface and a metal inner ring having an outer surface configured to cooperate with the inner surface of the outer ring to permit relative movement of the inner and outer rings. At least the outer surface of the inner ring is provided with a plasma electrolytic oxidation coating and/or at least the inner surface of the outer ring is provided with a plasma electrolytic oxidation coating.

A plain bearing includes an outer ring having an inner surface and an inner ring having an outer surface in contact with the inner surface of the outer ring. The inner ring is configured to cooperate with the outer ring to permit relative movement, and the inner ring or the outer ring or the inner ring and the outer ring is made of a metal matrix composite material.

Proposed is a novel coupling mechanism capable of applying a preload to a ball portion and a socket portion which constitute a coupling mechanism of a titling pad bearing, without using a spring element.

A bearing material including a substrate, and a sliding layer overlying the substrate, where the sliding layer includes fillers including wollastonite in a wt % range between 10 and 30%, barium sulfate in a wt % range between 5 and 15%, and pigment in a wt % range between 0.1 and 5%.

Provided is a sintered bearing, including Al, Cu, and Ni, the sintered bearing having Al—Cu—Ni alloy structures (3) sintered together. The Al—Cu—Ni alloy structures (3) each have an Al—Cu—Ni matrix phase (α-phase) and an Al—Ni compound phase (κ-phase), and are free of an Al—Cu compound phase (γ-phase).

A plastic bearing material of a bearing may include a block copolymer. The block copolymer may include structural blocks of two or more different polymers. A first polymer may include at least one of polyamide-imide and polybenzimidazole. A second polymer may include at least one of polydimethylsiloxane, methyl vinyl ether and polyisobutene. A method for manufacturing a plastic bearing material may include synthesizing a structural block of a first polymer and a structural block of a second polymer to define a block copolymer via a condensation reaction.

The bearing apparatus 1 includes a crankshaft having multiple journals, main bearings supporting the crankshaft, and a bearing housing. The plurality of journals include a first journal with a lubricating oil passage and a second journal without a lubricating oil passage. The first and second journals are supported by first and second main bearings, respectively. The bearing housing is constituted by an Al-alloy upper housing and an Fe-alloy lower housing. The depth of the oil groove of the upper half bearing of the second main bearing at least in a ±45° region is equal to or smaller than a half of the depth of the oil groove of the upper half bearing of the first main bearing in the ±45° region.

A laminate article can include a substrate and a layer of a heterogeneous mixture of a non-fluorinated polymer compound and a fluorinated polymer compound. The laminate article can include a gradual concentration gradient along an axis perpendicular to the substrate. The gradual concentration gradient can include the change of the amount of the non-fluorinated polymer and the fluorinated polymer compound relative to the axis perpendicular to the substrate. The layer can further include at least one filler. The laminate can be applied as a bearing material.

A sliding-hearing composite material includes a steel supporting layer (10), an intermediate layer (12) based on an aluminum alloy that is free of lead, and a bearing metal layer (14) based on an aluminum alloy that is free of lead, wherein the aluminum alloy of the intermediate layer (12) has a composition having 3.5 to 4.5 wt % copper, 0.1 to 1.5 wt % manganese, 0.1 to 1.5 wt % magnesium, and the usual admissible impurities, the remainder being aluminum, and wherein the aluminum alloy of the bearing mental layer (14) has a composition having wt % tin, 1.0-3.0 wt % nickel, 0.5-1.0 wt % manganese, 0.5-1.0 wt % copper, 0.15-0.25 wt % chromium, 0.1-0.3 wt % vanadium, and the usual admissible impurities, he remainder being aluminum. A sliding bearing element and the use of the sliding-bearing composite material for sliding bearing element, particularly sliding bearing shells, sliding bearing bushes, or thrust washers is also disclosed.

A half thrust bearing for a crankshaft of an internal combustion engine is formed of a back metal layer and a bearing alloy layer to have a slide surface and two thrust reliefs. Each thrust relieve includes a first region, where the back metal layer is exposed, on a circumferential end surface side, and a second region and a third region, where the bearing alloy layer is exposed while the slide surface includes a fourth region. A circumferential end region consists of the first and second regions. The bearing alloy layer includes a uniform thickness portion, and a decreased thickness portion adjacent to an inner-diameter-side end surface in a cross-section of the second region and includes a uniform thickness portion and an increased thickness portion adjacent to the inner-diameter-side surface in cross-sections of the third and fourth regions.