Provided is a Cu-based sintered bearing comprising: 15-36 mass % of Ni; 3-13 mass % of Sn; 0.05-0.55 mass % of P; and 0.02-4 mass % of C in total, the balance consisting of Cu and inevitable impurities, wherein the content of C forming an alloy with a matrix within CuNi-based main phase grains is 0.02-0.10 mass %.

A trunnion bearing includes an inner ring that has a first exterior surface and a first interior surface. The first exterior surface has a spherical contour. The trunnion bearing includes an outer ring that has a second interior surface and a second exterior surface. The second interior surface has a spherical contour. The inner ring is disposed at least partially in the outer ring. A metallic liner made of a copper based alloy is disposed between the first exterior surface of the inner ring and the second interior surface of the outer ring. The inner ring and/or the outer ring are made from a titanium based alloy.

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

The present invention relates to a mechanical system (1), comprising a bearing (4) and a shaft (10) coupled to the bearing (4), especially for an internal combustion engine, being subjected to average contact pressures of less than 200 MPa. The shaft (10) has at least one area (12) provided with an anti-seizing surface coating (20), having a surface hardness at least twice that of the bearing (4), and a microtexturation (30) comprised of a set of individual microcavities (31), distributed in said area (12). The invention also relates to a method for manufacturing such a mechanical system (1).

There is provided a sintered bearing having high rotational accuracy and low rotational fluctuation. This bearing includes a bearing surface (4a), and is made of a sintered compact (4) produced by molding and sintering a raw material powder (10) containing a partially diffusion-alloyed powder (11) in which a copper powder (13) is partially diffused on a surface of an iron powder (12), a tin powder (14) as a low-melting-point metal powder, and a graphite powder as a solid lubricant powder. The sintered bearing has a radial crushing strength greater than or equal to 300 MPa.

An oil-retaining sintered bearing in which friction coefficient can be reduced and a sliding property as a bearing can be improved by supplying a sufficient amount of oil to a sliding surface and preventing the supplied oil from moving to an interior from the sliding surface; a sliding surface 3 supporting an outer peripheral surface of a shaft and a helical oiling surface 4 around a shaft axis of a bearing hole are adjacently formed on an inner peripheral surface of the bearing hole into which the shaft is inserted; a surface open rate at the sliding surface 3 is not larger than 10%; and a surface open rate at the oiling surface exceeds 10%.

A kit of replacement parts and a method are used to replace a roller on a defective pin including a washer and a retaining pin. The invention is particularly useful in conjunction with roll-off trucks and trailers. The method includes the steps of removing the retaining pin, washer and roller from the defective pin, placing a new sleeve over the defective pin, placing a new roller over the new sleeve, placing a new washer over the sleeve, and installing a new retaining component to maintain the position of the new sleeve, roller and washer. In accordance with one embodiment, the new retaining component is a retailing pin used to replace an old retaining pin. According to an alternative embodiment, the new retaining component is a snap retaining ring. The sleeve is preferably hardened, and the defective pin may have a nominal O.D. of 2 inches.

A copper alloy having a high corrosion resistance for a wide range of different lubricants, in particular different base oils and a variation of lubricant additives. The property of a low corrosion tendency for different tribological systems is also combined with good mechanical properties, and a high strength in particular. The alloy has a low wear and coefficient of friction. The lubricant-compatible copper alloy is suitable for producing components that come in contact with lubricant and are exposed to friction stresses, such as gear components, for example synchronizer rings. A method for manufacturing such components and a gear having at least one such component is also disclosed.

A sintered sliding material with excellent corrosion resistance, heat resistance, and wear resistance is provided. The sintered sliding material has a composition made of: 36-86 mass % of Ni; 1-11 mass % of Sn; 0.05-1.0 mass % of P; 1-9 mass % of C; and the Cu balance including inevitable impurities. The sintered sliding material is made of a sintered material of a plurality of grains of alloy of NiCu alloy or CuNi alloy, the NiCu alloy and the CuNi alloy containing Sn, P, C, and Si; has a structure in which pores are dispersedly formed in grain boundaries of the plurality of the grains of alloy; and as inevitable impurities in a matrix constituted from the grains of alloy, a C content is 0.6 mass % or less and a Si content is 0.15 mass % or less.

A hydrodynamic plain bearing includes a bearing shell having an inner surface which forms a bearing surface for a rotating shaft or the like. The bearing surface has a plurality of surface segments separated from each other and disposed successively in the circumferential direction of the bearing shell. At least the bearing surface or the entire bearing shell is made from CuCr1Zr.