Abstract: A cylindrical roller bearing assembly capable of increasing the load bearing capability with respect to the thrust load and of easily controlling the shape of the cylindrical roller is provided. The cylindrical roller bearing assembly includes an inner ring, an outer ring and a plurality of cylindrical rollers. One or both of the inner and outer rings has/have a collar. A surface portion encompassed within the region of radial dimensions of 0.12 Da to 0.20 Da as measured from an outer diametric edge of an end face of each of the cylindrical rollers to a roller axis, wherein Da represents an outer diameter of each of the cylindrical rollers is rendered to be a crowned portion of a tapered shape inclined at an angle ?r of 0.25 to 1° relative to a plane perpendicular to the roller axis.

Abstract: A rolling bearing as a ball bearing comprising an inner ring; an outer ring having the same axial width as said inner ring; balls arranged between said inner ring and said outer ring; and a sealing member having a roughly channel-shaped configuration in cross section projecting from both end faces of said inner ring and said outer ring. A relation between a diameter A of said ball and an axial width W of said inner ring and said outer ring satisfies A/W?0.4, and a relation between a bearing volume V of said ball bearing and an internal space capacity C of said ball bearing satisfies 0.35?C/V?0.55.

Abstract: A rolling bearing as a ball bearing comprising an inner ring; an outer ring having the same axial width as said inner ring; balls arranged between said inner ring and said outer ring; and a sealing member having a roughly channel-shaped configuration in cross section projecting from both end faces of said inner ring and said outer ring. A relation between a diameter A of said ball and an axial width W of said inner ring and said outer ring satisfies A/W?0.4, and a relation between a bearing volume V of said ball bearing and an internal space capacity C of said ball bearing satisfies 0.35?CN?0.55.

Abstract: A cylindrical roller bearing 41 comprises an inner ring 42, an outer ring 43 having the same axial width as the inner ring 42 and having an insulation layer 43a formed on an outer diameter surface and both end faces thereof, cylindrical rollers 44 arranged between the inner ring 42 and the outer ring 43, a retainer 45 retaining intervals of the cylindrical rollers 44, and a sealing seal 46 as a sealing member having a roughly channel-shaped configuration in cross section projecting from both end faces of the inner ring 42 and the outer ring 43. Thus, a relation between a length L3 of the roller 44 and an axial width W3 of the inner ring 42 and the outer ring 43 satisfies L3/W3?0.4, and a relation between a bearing volume V3 of the cylindrical roller bearing 41 and an internal space capacity C3 of the cylindrical roller bearing 41 satisfies 0.25?C3/V3?0.55.

Abstract: A cylindrical roller bearing assembly capable of increasing the load bearing capability with respect to the thrust load and of easily controlling the shape of the cylindrical roller is provided. The cylindrical roller bearing assembly includes an inner ring, an outer ring and a plurality of cylindrical rollers. One or both of the inner and outer rings has/have a collar. A surface portion encompassed within the region of radial dimensions of 0.12Da to 0.20Da as measured from an outer diametric edge of an end face of each of the cylindrical rollers to a roller axis, wherein Da represents an outer diameter of each of the cylindrical rollers is rendered to be a crowned portion of a tapered shape inclined at an angle ?r of 0.25 to 1° relative to a plane perpendicular to the roller axis.

Abstract: A cylindrical roller bearing 41 comprises an inner ring 42, an outer ring 43 having the same axial width as the inner ring 42 and having an insulation layer 43a formed on an outer diameter surface and both end faces thereof, cylindrical rollers 44 arranged between the inner ring 42 and the outer ring 43, a retainer 45 retaining intervals of the cylindrical rollers 44, and a sealing seal 46 as a sealing member having a roughly channel-shaped configuration in cross section projecting from both end faces of the inner ring 42 and the outer ring 43. Thus, a relation between a length L3 of the roller 44 and an axial width W3 of the inner ring 42 and the outer ring 43 satisfies L3/W3?0.4, and a relation between a bearing volume V3 of the cylindrical roller bearing 41 and an internal space capacity C3 of the cylindrical roller bearing 41 satisfies 0.25?C3/V3?0.55.

Abstract: A cylindrical roller bearing 31 comprises an inner ring 32, an outer ring 33 having the same axial width as the inner ring 32 and having an insulation layer formed on an outer diameter surface and both end faces thereof, cylindrical rollers 34 as rolling bodies arranged between the inner ring 32 and the outer ring 33, a retainer 35 retaining intervals of the cylindrical rollers 34, and a seal 36 as a sealing member for sealing both ends of the bearing. The seal 36 has a channel shaped sectional configuration projecting from both end faces of the inner ring 32 and the outer ring 33 and it is formed by injection molding with a resin material.

Abstract: To provide an improved rolling bearing assembly having an improved resistance to electric corrosion, which can provide a proper performance and can be assembled at a reduced cost, the rolling bearing assembly includes an inner race (1), an outer race (2) and a circumferential of rolling elements (3) rollingly interposed between the inner and outer races (1) and (2). An electrically insulating layer (4) is formed on a surface of one of the inner and outer races (1) and (2), which is held in contact with a housing or a shaft when the rolling bearing assembly is mounted. This electrically insulating layer (4) is made of a gray alumina containing Al2O3 mixed with TiO2 in a quantity chosen to be equal to or smaller than 1 wt % relative to the total weight of the gray alumina.

Abstract: To provide an electrocorrosion preventive rolling bearing assembly wherein a final machining of an electrically insulating layer and a thickness control of the insulating layer can easily and accurately be accomplished, the electrocorrosion preventive rolling bearing assembly is of a type in which an inner race (2) or an outer race (3) is formed with an insulating layer (6) so as to cover a peripheral surface thereof, which engages a housing or a shaft, and opposite annular end faces thereof. The insulating layer (6) is a thermally sprayed layer of a metallic oxide. Of the inner and outer races (2) and (3), a raceway member having the insulating layer (6) is provided at its end face with a tool reference plane (7) for a process of finishing the electrically insulating layer (6) or for the thickness control of the insulating layer.

Abstract: To provide an improved rolling bearing assembly having an improved resistance to electric corrosion, which can provide a proper performance and can be assembled at a reduced cost, the rolling bearing assembly includes an inner race (1), an outer race (2) and a circumferential of rolling elements (3) rollingly interposed between the inner and outer races (1) and (2). An electrically insulating layer (4) is formed on a surface of one of the inner and outer races (1) and (2), which is held in contact with a housing or a shaft when the rolling bearing assembly is mounted. This electrically insulating layer (4) is made of a gray alumina containing Al2O3 mixed with TiO2 in a quantity chosen to be equal to or smaller than 1 wt % relative to the total weight of the gray alumina.

Abstract: To provide an electrocorrosion preventive rolling bearing assembly wherein a final machining of an electrically insulating layer and a thickness control of the insulating layer can easily and accurately be accomplished, the electrocorrosion preventive rolling bearing assembly is of a type in which an inner race (2) or an outer race (3) is formed with an insulating layer (6) so as to cover a peripheral surface thereof, which engages a housing or a shaft, and opposite annular end faces thereof. The insulating layer (6) is a thermally sprayed layer of a metallic oxide. Of the inner and outer races (2) and (3), a raceway member having the insulating layer (6) is provided at its end face with a tool reference plane (7) for a process of finishing the electrically insulating layer (6) or for the thickness control of the insulating layer.

Abstract: In a conductive rolling bearing comprising an inner ring (11), an outer ring (12), a plurality of rolling elements (13) mounted between the inner ring and the outer ring, and seal members for sealing the space between the inner ring and the outer ring, the seal members have one end thereof secured to one of the inner ring and the outer ring and the other end thereof in an elastic, sliding contact with a seal wall surface (18) formed on the other. The free end (19) of the seal member (15) is bent outwardly of the bearing and the seal member (15) is in a sliding contact with the seal wall surface (18) on its bent portion (20). This arrangement gives the effects of providing a low, stable torque for the bearing and of improving the seal performance of the bearing. This conductive rolling bearing is used in a steering assembly of an automobile and bearing assemblies having a bearing near electrical devices.