A spherical bearing having an outer ring and an inner ring respectively including an inner surface and an outer surface that are in contact with one another. Moreover, the material of the outer ring provides an alloy having the formula NiCr19Fe18Nb or an alloy having the formula X6NiCrTiMoVB25-15-2.

A ball joint having an outer ring and an inner ring respectively including an interior surface and an exterior surface in contact one against the other. The outer ring including two opposite radial front faces axially delimiting the interior surface and two diametrically opposite notches formed on the interior surface and opening onto one of the front faces. Furthermore, the material of the outer ring includes an alloy with the formula NiCr19Fe18Nb or an alloy with the formula X6NiCrTiMoVB25-15-2 and the material of the inner ring includes an alloy with the formula CoCr29W5.

A method for controlling carbide network in a bearing steel wire rod by controlling cooling and rolling, comprises the following steps: rapidly rolling a bar to a wire rod and spinning it into a loose coil, controlling the rolling temperature at 780° C.-880° C.; and the spinning temperature at 750° C.-850° C.; carrying out on-line controlling cooling of continuous loose coils using EDC water bath austempering cooling process, controlling the cooling rate at 2.0° C./s-10° C./s, and controlling the final cooling temperature within 620-630° C.; after EDC water bath austempering cooling, using slow cooling under a cover, and the temperature is controlled to be 400° C.-500° C. when being removed out of the cover; after slow cooling, collecting coils, and cooling in air to the room temperature.

A wheel hub bearing unit including an outer ring, rolling bodies and an inner ring provided with a flange at a first end thereof, the inner ring being made with a sliding surface for sealing lips of a sealing device arranged so as to protect the rolling bodies, defined by a metal insert formed integrally with the first end and arranged astride a base portion of the flange and a portion of the first end immediately adjacent to the base portion of the flange. The metal insert has a thickness of between 0.2 and 2 mm and being made, using a material different from the material with which the inner ring is manufactured and consisting of an austenitic stainless steel, by means of additive manufacturing.

A self-lubricating bearing includes an outer ring having a concave inside surface that defines an interior area of the outer ring. The bearing includes an inner member having a convex exterior surface. The inner member is disposed in the interior area, and the convex exterior surface has a physical vapor deposition coating thereon. A self-lubricating liner is bonded to the concave inside surface. The outer ring is made from a first metallic alloy, and the inner member made from a second metallic alloy.

A steel alloy for a bearing, the alloy having a composition that provides: from 0.8 to 1.0 wt. % carbon, from 0.1 to 0.5 wt. % silicon, from 0.2 to 0.9 wt. % manganese, from 2.0 to 3.3 wt. % chromium, from 0 to 0.4 wt. % molybdenum, from 0 to 0.2 wt. % cobalt, from 0 to 0.2 wt. % iridium, from 0 to 0.2 wt. % rhenium, from 0 to 0.2 wt. % vanadium, from 0 to 0.1 wt. % niobium, from 0 to 0.5 wt. % tungsten, from 0 to 0.2 wt. % nickel, from 0 to 0.4 wt. % copper, from 0 to 0.05 wt. % aluminum, from 0 to 150 ppm nitrogen, and the balance iron, together with any unavoidable impurities.

The present invention is intended to provide a protective cover, comprising an inner ring 12 with an inner ring track surface 12A on an outer peripheral surface; an outer ring 13 with an outer ring track surface 13A on an inner peripheral surface; a bearing with rolling elements 14 between the inner ring track surface 12A and the outer ring track surface 13A; a magnetic encoder 8 that is positioned at one axial end portion of the bearing and fixed to the inner ring 12; and a magnetic sensor that is fixed to the outer ring 13, a cup-shaped protective cover 1 press-fitted into the outer ring 13 to cover the magnetic encoder 8 and intervene between the magnetic encoder 8 and the magnetic sensor is formed by performing cold press molding of an austenitic stainless steel plate material with a nickel content of 8.5 to 13 weight %.

A bearing component formed from a steel alloy having from 0.7 to 0.9 wt. % carbon, from 0.05 to 0.16 wt. % silicon, from 0.7 to 0.9 wt. % manganese, from 1.4 to 2.0 wt. % chromium, from 0.7 to 1.0 wt. % molybdenum, from 0.03 to 0.15 wt. % vanadium, from 0 to 0.25 wt. % nickel, from 0 to 0.3 wt. % copper, from 0 to 0.2 wt. % cobalt, from 0 to 0.1 wt. % aluminum, from 0 to 0.1 wt. % niobium, from 0 to 0.2 wt. % tantalum, from 0 to 0.025 wt. % phosphorous, from 0 to 0.015 wt. % sulphur, from 0 to 0.075 wt. % tin, from 0 to 0.075 wt. % antimony, from 0 to 0.04 wt. % arsenic, from 0 to 0.002 wt. % lead, up to 350 ppm nitrogen, up to 20 ppm oxygen, up to 50 ppm calcium, up to 30 ppm boron, up to 50 ppm titanium, the balance iron, together with any unavoidable impurities.

A bearing bush 1 includes a cylindrical portion 6 having a cylindrical inner surface 2 and a cylindrical outer surface 3; a cylindrical portion 12 having a cylindrical inner surface 7 and a cylindrical outer surface 8; a curved bulged portion 17 interposed between the cylindrical portions 6 and 12 in an axial direction X and having a curved concave inner surface 15 and a curved convex outer surface 16; an annular ring-shaped collar portion 19 provided at another end portion 18 in the axial direction X of the cylindrical portion 6 in such a manner as to extend in an outward direction A in a radial direction Y; a slit 21 which splits the cylindrical portions 6 and 12, the curved bulged portion 17, and the annular ring-shaped collar portion 19; and a plurality of inclined plate portions 23 which are formed integrally on an outer peripheral edge 22 of the annular ring-shaped collar portion 19 and extend in the outward direction A in the radial direction Y from the outer peripheral edge 22 in an inclined manner.

A heat-resistant sintered sliding member according to the present invention has a structure in which a lubrication phase is dispersed in a matrix, in which an entire composition of the sliding member is composed of a composition containing, by mass %, Cr: 18% to 35%, Mo: 0.3% to 15%, Ni: 0% to 30%, Si: 0.5% to 6%, S: 0.2% to 4.0%, P: 0% to 1.2%, B: 0% to 0.8%, and a Fe balance containing inevitable impurities, in which the matrix is a Fe—Cr—Mo—Si-based matrix or a Fe—Cr—Mo—Ni—Si-based matrix, the lubrication phase contains chromium sulfide, and a porosity of an entire sliding member is 2.0% or less.