Abstract: A cage segment for a rolling-element bearing having a plurality of rolling elements includes at least one bridge and first and second plates extending from axial ends of the bridge, sides of the bridge being configured to guide rolling elements. Radially inner or outer edges of each of the bridges include at least one axial channel having channel walls projecting radially and circumferentially from the radial inner or outer edge.

Abstract: A rolling bearing unit provided with a radially outer ring having an assembly groove, two radially inner rings, two series of rolling elements interposed between the radially outer ring and the radially inner rings and defining between them a first internal grease reservoir. The groove is arranged in an axially intermediate position with respect to the two radially inner rings and a grease dispensing device is housed inside the groove of the radially outer ring and is in turn provided with a second grease reservoir formed inside the radially outer ring and communicating with the first reservoir via the groove. A permeable retaining wall housed is inside the groove so as to retain the grease inside the second reservoir and allow it to flow out towards the first reservoir during operation of the bearing unit, dispensing it in a controlled manner.

Abstract: An optical waveguide includes a first clad layer, core layers each formed on the first clad layer, a second clad layer formed on the first clad layer to cover the core layers, grooves each provided corresponding to one of the core layers. The optical waveguide further includes inclined surfaces each disposed in the corresponding groove to face an end surface of the corresponding core layer in an extension direction of the core layers. Each inclined surface is inclined with respect to the extension direction of the core layers. The optical waveguide further includes optical path changing mirrors each formed on the corresponding inclined surface. The grooves are physically separate from each other. Each inclined surface is formed in only the first and second clad layers. Each optical path changing mirror is not in contact with the core layers and is physically separate from the core layers.

Abstract: A rolling bearing, a rolling device, and a method of manufacturing the rolling device are provided, by which a long life can readily be implemented by suppressing surface damage even on the use condition that the oil film formation performance of a rolling part is poor. A rolling device includes: a first rolling component made of SUJ2; and a second rolling component made of SUJ2 and configured to contact the first rolling component. A surface of a rolling part of the first rolling component is greater in arithmetic mean roughness than a surface of a rolling part of the second rolling component. The arithmetic mean roughness of the surface of the rolling part of the second rolling component is 0.07 ?m or more and 0.20 ?m or less.

Abstract: A tapered roller bearing may comprise an inner ring, an outer ring, and two rows of tapered rollers that are arranged in an O-arrangement between the inner ring and the outer ring. The inner ring may extend in an axial direction over a greater length than the outer ring, and a gap between the inner ring and the outer ring on at least one side of the tapered roller bearing may be sealed by a sealing assembly. The sealing assembly may comprise a main seal that is attached to the inner ring in a rotationally fixed manner, as well as a seal race ring that is attached to the outer ring in a rotationally fixed manner. The seal race ring may form a seal raceway for the main seal.

Abstract: There is provided a rotary seal having uneven surfaces formed on sliding contact surfaces of a slinger with which seal lip portions of a seal member come in contact, in which wear of the seal lip portions is reduced, resulting in increased reliability. The rotary seal 1 includes: a core metal 3; the seal member 4 having a base portion 4A joined to the core metal 3 and the seal lip portions 4B, 4C, and 4D; and the slinger 2 having the sliding contact surfaces A and B with which the seal lip portions 4B, 4C, and 4D come in contact, in which each of the sliding contact surfaces A and B is in such a surface condition that an arithmetic average roughness Ra satisfies 0.3 ?m?Ra?1.0 ?m, a skewness of roughness curve Rsk satisfies Rsk??1, and an average length of roughness curve element RSm satisfies 100 ?m?RSm, Ra, Rsk, and RSm defined by JIS B 0601:2013.

Abstract: A solid lubricant is for a bearing and includes at least thirty percent by weight of graphite, a binding material, and inorganic lubricating nanoparticles. Also, a bearing filled with the solid lubricant is provided.

Abstract: The invention relates to a lubricated rolling bearing for blade roots including a coating made of a chemical compound of lamellar structure.

Abstract: Disclosed herein are a hook with rotating saddle and a rotatable mono axial pedicle screw. In an embodiment, the disclosed hook may include at least one body comprising a hook member and a saddle member. The hook member and saddle member may be rotatably mounted to one another so as to rotate with respect to each other only about a common axis, and the saddle member may be configured for connection to an end of a connecting member. A surgical screw system may include receiver and screw members engagable with one another such that when engaged, only rotation of the receiving member about the longitudinal axis of the screw member and restrain against substantially all other translational or rotational movement.

Abstract: The invention provides a process for preparing a protective layer on a tribological surface of a mechanical component, wherein the layer comprises a metal phosphate and/or metal sulphate having anti-wear and/or anti-fretting properties, and the process comprises subjecting the tribological surface of the component to a mechanical treatment which is carried out with a tool that moves at or along the tribological surface during which treatment the metal phosphate and/or metal sulphate in solid form is provided and the layer is formed on the surface of the mechanical component by means of deposition of the metal phosphate and/or metal sulphate compound.

Abstract: A component of a rolling-element bearing, such as a bearing inner ring having an inner ring flange, a bearing outer ring having an outer ring flange or a rolling element having an end surface, includes a solid slide layer having a lower coefficient of friction than a material to which the slide layer is attached which slide layer reduces frictional contact between the component and another component against which the slide layer slides during bearing operation.

Abstract: A touchdown bearing for supporting a rotor including: an inner race having a first inner circumferential surface; a self-lubricating insert having a second inner circumferential surface and affixed to the first inner circumferential surface, the second inner circumferential surface extending radially inward past at least a first portion of the first inner circumferential surface, an outer race located radially outward of the inner race; and a plurality of rolling elements configured radially between the inner and outer races to enable the outer race to rotate freely relative to the inner race.

Abstract: A rolling bearing (6), in particular for a turbocharger, having an outer ring (10), an inner ring (11) which is rotatable relative to the outer ring (10) about an axis of rotation (14), and having a number of rolling bodies (19) which are guided in a cage (24) between the outer ring (10) and the inner ring (11). Here, the cage (24) has, on its inner circumference, a guide surface (25) which is guided on a guide track (26) on the outer circumference of the inner ring (11). A groove (32) with a free region (34) extends on the outer circumference of the inner ring (11). The groove (32) includes a groove base (33) which rises in a radial direction toward the guide surface (25). Oil is applied to the free region (34) of the groove (32) via a spray oil hole (22) in the outer ring (10).

Abstract: A roller structure including a cylindrical casing having an outer wear surface and an inner surface provided by a bore extending through the cylindrical casing. At least one anti-friction bearing is positioned within the bore in contact with the inside surface of the cylindrical casing. The anti-friction bearing includes a solid lubricant. In one embodiment, the roller structure is a roller turn roller and is a component of a guide for a turn of a conveyor system, wherein the outer wear surface is for contacting the chain of the conveyer system. A method of lubricating a roller structure is also provided.

Abstract: A rolling bearing unit includes: a rolling bearing having an inner ring, an outer ring arranged, multiple rolling elements, and a cage; and a cage guide member that is formed integrally with the outer ring or formed as a member different from the outer ring, and that is fixed to the housing side. The cage guide member has a guide projection projected into an annular space between the inner and outer rings and having an outer peripheral face a part of which serves as the guide face, and a grease supply portion having a grease reservoir portion in which the grease is reserved. A supply port through which the grease is supplied from the grease reservoir portion to the guide face is formed on the outer peripheral face of the guide projection, at a position closer to a base end portion of the guide projection than the guide face.

Abstract: A ball bearing includes: an outer ring; an inner ring having a ring-shaped member fitted portion that has a step portion that extends generally along a radial direction of the outer ring and an outer peripheral face portion; balls disposed between an inner periphery raceway groove of the outer ring and an outer periphery raceway groove of the inner ring; and a ring-shaped lubricant supply member that is fixed to the ring-shaped member fitted portion while being in contact with the step portion.

Abstract: A roller bearing capable of effectively restraining occurrence of smearing or the like is provided. A cylindrical roller bearing includes: an outer ring having an outer ring raceway surface; an inner ring having an inner ring raceway surface that faces the outer ring raceway surface; and a plurality of cylindrical rollers rollably disposed between the outer ring raceway surface and the inner ring raceway surface. The inner ring raceway surface of the inner ring is provided with a manganese phosphate coating, and a rolling contact surface of each cylindrical roller is provided with a diamond-like carbon coating.

Abstract: A rolling bearing device includes inner races, outer races, rolling elements, a retainer, and an inner race spacer. The inner race spacer is formed of an oil reservoir member made of a sintered metal impregnated with lubricating oil, and a spacer cover fitted onto an outer periphery of the oil reservoir member. Through a centrifugal force to be applied to the oil reservoir member at the time of bearing rotation, the lubricating oil is scattered radially outward through a chamfered portion of the oil reservoir member via an oil supply passage, to thereby lubricate the interior of the bearing with oil.

Abstract: A rolling bearing which is capable of preventing the rolling elements from dropping out from between the inner and the outer rings even when the separators have been worn to an advanced stage. A rolling bearing includes: a plurality of rolling elements arranged between an inner and an outer rings; and a plurality of prismatic separators disposed in a circumferential direction between the rolling elements. The separator includes integrally therewith a metal band on at least one of its outer surfaces including those which face the inner or the outer ring, or at least one of its axial side surfaces, excluding however, surfaces which face the circumferential direction and make contact with the rolling elements. The metal band has a narrower width than a width of the separator in the circumferential direction, and prevents wear of the separator from advancing beyond a certain extent.

Abstract: A ball bearing includes: an outer ring; an inner ring having a ring-shaped member fitted portion that has a step portion that extends generally along a radial direction of the outer ring and an outer peripheral face portion; balls disposed between an inner periphery raceway groove of the outer ring and an outer periphery raceway groove of the inner ring; and a ring-shaped lubricant supply member that is fixed to the ring-shaped member fitted portion while being in contact with the step portion.

Abstract: A structure (200) for containing a volume of lubricant additive gel (10) which is disposed within a mechanical system, in close proximity to a wear critical surface, and which is configured to provide a release of the contained additives into a flow of lubricant over time or as a function of temperature in a site-specific manner to minimize wear or reduce oil oxidation due to harsh operating conditions. The structure defines a cage or capsule with screen or mesh sides (202) having multiple perforations or openings through which the flow of lubricant may circulate. Within the contained volume of the structure (200), additives are disposed in a gel matrix (10), and are release over time or as a function of temperature, through the perorations or openings, in close operative proximity to wear critical surfaces of the mechanical system such as a bearing assembly or gear arrangement.

Abstract: A rolling contact bearing assembly includes a seal member having a seal lip segment. The seal lip segment includes a waist portion having, as viewed in a cross section, a bent V-shape such that a surface of the seal lip segment on outer side defines a relief recess and also includes a protrusion portion distal to the waist portion and having a tapered shape narrowing towards a free end thereof. The seal member installed in the bearing assembly applies urging force on one of inner and outer raceway rings, against change in degree of interference of the protrusion portion with the raceway ring. The protrusion portion includes such high wear material that rotation of the bearing assembly results in wear of the protrusion portion to cause the protrusion portion to make non-contact status or light contact status of a contact pressure of substantially zero.

Abstract: A rolling bearing includes an inner ring, an outer ring, and a plurality of rolling elements. A large number of inside dimples in which a liquid lubricant is retained and a large number of outside dimples in which a solid lubricant is retained are formed in at least one of an inner ring raceway surface and an outer ring raceway surface. The inside dimples are formed in a contact region at which the raceway surface contact the rolling elements or in a section of each non-contact region, the section being close to the contact region. The outside dimples are formed outside a portion in which the inside dimples are formed.

Abstract: A solid-lubricated ball, roller, or plain bearing assembly with solid rings made of solid lubricant loosely fitted inside the bearing envelope for replenishing the solid-lubricant films on the bearing contacting surfaces for the life of the bearing without the need for any re-lubrication. A method is also provided for mounting all-ceramic bearing rings on metal shafts and housings for operation at extremely high temperatures and solid-lubricant idler gears to replenish lubricant films on gear teeth. Cages may be used at extremely high speeds or with very large ceramic balls or rollers and when used the cages require pocket clearances in the circumferential direction several times larger than in the axial direction.

Abstract: A rolling-contact bearing has an outer ring, an inner ring or a shaft rotational relative to the outer ring and a full complement of rollers disposed for rotation between the outer ring and the shaft. A semisolid gel-like lubricant composed of a mixture of a gelling agent and lubricating oil is packed into interstices or gaps between the outer ring and the rollers and among the adjacent rollers to retain surely the rollers on a circular inside surface of the outer ring. The gel-like lubricant is composed of the lubricating oil of mineral oil or base oil, and a powdery oil gelling agent based on amino acids.

Abstract: A rolling bearing has an inner ring; an outer ring; a seal fixing groove provided at either the inner ring or the outer ring; a seal contact groove provided at either the inner ring or the outer ring on a side where the seal fixing groove has not been provided; and a sealing member with two ends. One end of the sealing member is fitted into the seal fixing groove, and the other end of the sealing member is configured not to contact the seal contact groove in a non-preloaded state but to contact the seal contact groove in an axial direction in a preloaded state. Further, a central line average roughness Ra of a contact surface of the seal contact groove to which the sealing member contacts is Ra?0.6 ?m.

Abstract: Provided is a rolling bearing device comprising inner races (2), outer races (3), rolling elements (4), a retainer (5), and an inner race spacer (6). The inner race spacer (6) is formed of an oil reservoir member (7) made of a sintered metal impregnated with lubricating oil, and a spacer cover (8) fitted onto an outer periphery of the oil reservoir member (7). Through a centrifugal force to be applied to the oil reservoir member (7) at the time of bearing rotation, the lubricating oil is scattered radially outward through a chamfered portion (7d) of the oil reservoir member (7) via an oil supply passage (S), to thereby lubricate the interior of the bearing with oil.

Abstract: A rolling-contact bearing has an outer ring, an inner ring or a shaft rotational relative to the outer ring and a full complement of rollers disposed for rotation between the outer ring and the shaft. A semisolid gel-like lubricant composed of a mixture of a gelling agent and lubricating oil is packed into interstices or gaps between the outer ring and the rollers and among the adjacent rollers to retain surely the rollers on a circular inside surface of the outer ring. The gel-like lubricant is composed of the lubricating oil of mineral oil or base oil, and a powdery oil gelling agent based on amino acids.

Abstract: A solid lubricant is for a bearing and includes at least thirty percent by weight of graphite, a binding material, and inorganic lubricating nanoparticles. Also, a bearing filled with the solid lubricant is provided.

Abstract: In an electrical machine having a roller bearing, whose inner ring is seated on the rotor shaft of the electrical machine, whose outer ring is seated in a housing and which is located in a closed area, the roller bearing is intended to be protected against electrical breakdowns. For this purpose, the area contains a liquid on an aqueous basis, whose level overhangs the external contour of the inner ring at its lowest point. The inner ring and the outer ring are therefore conductively connected and the voltage can be equalized between the rotor and the housing of the electrical machine, without any impediment and without breakdowns. In an application as a geared motor, the lubricant for the gearbox is also a liquid on an aqueous basis.

Abstract: It is an object of the present invention to provide a cage that can be used in a cryogenic-temperature environment or a vacuum without providing the cage with a complicated construction and without performing special treatment and a bearing using the cage. A cage made of resin has an annular main body having a plurality of pocket portions radially penetrating the main body; and a plurality of pocket members, provided on the annular main body, which hold rolling elements of a rolling bearing. The main body is a molding of a first resin composition consisting of a first resin and a solid lubricant mixed therewith; and at least a rolling element-retaining surface of each of the pocket members is made of a second resin composition containing fluorocarbon resin as a main component thereof. The molding of the first resin composition has a tensile strength of not less than 30 MPa and a heat-resistant temperature of not less than 200° C. The second resin composition is a fluorocarbon resin composition.

Abstract: Surfaces of the raceway grooves of the outer and inner rings, a surface of each ball and all surface of the cage are coated with titanium oxide. In other words, hydrophilic layers made of titanium oxide are formed on the surfaces of the raceway grooves of the outer and inner rings, the surface of each ball and all surface of the cage.

Abstract: A bearing lubrication system for a high temperature bearing, such as in a small gas turbine engine for a UAV, in which the bearing and lubricant requires a long shelf life, where the bearing includes a solid lubricant movable within a chamber formed within a housing and located adjacent to the bearing. The solid lubricant is biased by a spring toward the bearing and abuts against a runner that rotates along with the rotor shaft during engine operation. A cooling air passage opens into a space formed between the bearing and the solid lubricant to supply cooling air through the bearing. When the engine operates, heat is transferred through the runner to the solid lubricant to melt the lubricant. Rubbing of the runner against the biased solid lubricant will also melt the lubricant. The melting lubricant is carried by the cooling air through the bearing to provide both cooling and lubrication for the bearing.

Abstract: An object of the present invention is that in a sliding member whose substrate is improved in sliding characteristics by a coating layer comprising a solid lubricant, the coating layer is obtained as one having a low coefficient of friction and an excellent wear resistance. In the present invention, the coating layer 7 has a structure formed by laminating solid lubricant plate crystal grains 3, and contains not more than 10 mass % of a resin for binder 8 for bonding the solid lubricant plate crystal grains 3, and the lubricant plate crystal grains have a crystal structure formed by piling (00l) planes (wherein l is an integer of not less than 1) in parallel, the index of orientation of the (00l) planes being not less than 90% at least on the sliding surface.

Abstract: An antifriction bearing of the roller type for a pulling system of weaving loom including two end plates secured to the inner race and positioned respectively and axially close to each flank of the rollers, end plates lying radially beyond the raceways and the end plates and the inner race being intended to be mounted between two lateral flanges. At least one end plate has a shape defining at least one cavity adjoining all or part of a flank of the rollers and able to accept a lubricant. The inner race has two lateral shoulders each one defining an axial bearing surface for each flange, and a width of the inner race with its lateral shoulders is substantially equal to a distance separating the outermost axial faces of the end plates.

Abstract: A rolling bearing made of stainless steel for use in conditions where hydrofluoric acid or fluorine grease is present can prevent boundary lubrication due to the invasion of metal corrosion powder into rolling surface of the bearing, and thus prevent the rapid advance of internal wear. The rolling bearing is highly durable and has a long life even if used in metal corrosive environments. A deep-groove rolling bearing includes bearing rings (inner ring and outer ring), rolling elements, and a retainer all made of stainless steel, and solidified lubricating oil sealed in the rolling bearing. The solidified lubricating oil is made by heat curing a mixture of lubricating oil or grease containing perfluoropolyether and a thermoplastic resin. Contact seals made of fluorine rubber seal the solidified lubricating oil. Even if metal abrasion powder is produced by effect of perfluoropolyether or hydrofluoric acid, it will be held embedded in the solidified lubricating oil, so that abnormal wear will not occur.

Abstract: The present invention is intended to provide a sliding member which exhibits an excellent anti-seizure property even under starved lubricant conditions. In the present invention, there is provided a sliding member with a structure, in which a coating layer having a sliding surface is adhered to the surface of the base material, wherein the coating layer does not contain a resin binder but has solid lubricant plate crystal particles laminated therein, wherein these solid lubricant plate crystal particles have a lamellar crystal structure in which (001) planes are stacked in parallel, and at least in the sliding surface, the orientation index of the (001) plane of the solid lubricant plate crystal particles is 90% or more.

Abstract: A rolling device in which damage such as seizure or wear is less liable to occur and which has a long life, even when used under severe conditions such as high speed, heavy load, high temperature and insufficient lubrication. A thrust needle roller bearing includes an inner ring 1, outer ring 2, and a plurality of rolling elements 3 rollably arranged between a raceway surface 1a of inner ring 1 and a raceway surface 2a of outer ring 2. A lubricant film consisting of a solid lubricant is coated over an area equivalent to an area ratio of 75% or more of at least one member of the group consisting of raceway surface 1a of inner ring 1, raceway surface 2a of outer ring 2, and a rolling contact surface 3a of rolling element 3. The thickness of the lubricant film is preferably 0.05 ?m or more and 8 ?m or less.

Abstract: A method for forming a lubricating layer, comprising the steps of a process for inserting a bearing, which has a tubular-shaped retainer holding a plurality of rollers and inserted in an outer ring, in a forming die having an inner diameter greater than an outer diameter of the outer ring of the bearing; a process for feeding a fluid lubricant including a thermoplastic resin into the forming die; a process for reducing pressure in the forming die with the fluid lubricant fed therein to remove air bubbles included in the fluid lubricant; a process for pressing a cylindrical elastic solid, which has an outer shape greater than a minimum inner diameter of the retainer, into an inscribed circle in which the plurality of rollers are inscribed; and a process for heating and setting the thermoplastic resin to form a lubricating layer.

Abstract: The present invention provides a method of making a foil component of a foil bearing, where the foil component has an inner surface, an inner portion, and an outer portion. In one embodiment, and by way of example only, the method includes thermally spraying a first material onto an outer surface of a sacrificial substrate to form the foil component inner portion, where the first material includes a solid film lubricant, and the outer surface has a shape that is complementary to the inner surface of the foil component. A second material is then thermally sprayed over the inner portion to form the outer portion, and the second material includes a metal. The sacrificial substrate is then removed to expose the foil component.

Abstract: Lubricant, which is shown by the following formula: CF3—(OCF2CF2)m—(OCF2)n—OCF3??[Chem. 1] and contains PFPE whose average molecular weight is 11000 or more, and PTFE particles of which the average diameter of primary particles is 1 ?m or less, is disposed on at least one of the first raceway of the first bearing ring, the second raceway of the second bearing ring, the surfaces of the rolling elements, and the surfaces of the respective pockets of the cage which face the rolling elements, in a ratio of 9 to 16 g per 1 m2 with respect to a total area obtained by adding up the area of the first raceway, the area of the second raceway, the area of the surfaces of the rolling elements, and the area of the surfaces of the respective pockets of the cage which face the rolling elements.

Abstract: The invention describes a bearing element (1), comprising a protective layer (2), a bearing metal layer (3) applied over the protective layer (2) and a sliding layer (4) applied by sputtering over the bearing metal layer (3). A sliding paint layer (5) is applied onto the sliding layer (4).

Abstract: Surfaces of the raceway grooves of the outer and inner rings, a surface of each ball and all surface of the cage are coated with titanium oxide. In other words, hydrophilic layers made of titanium oxide are formed on the surfaces of the raceway grooves of the outer and inner rings, the surface of each ball and all surface of the cage.

Abstract: It is an object of the present invention to provide a cage that can be used in a cryogenic-temperature environment or a vacuum without providing the cage with a complicated construction and without performing special treatment and a bearing using the cage. A cage made of resin has an annular main body having a plurality of pocket portions radially penetrating the main body; and a plurality of pocket members, provided on the annular main body, which hold rolling elements of a rolling bearing. The main body is a molding of a first resin composition consisting of a first resin and a solid lubricant mixed therewith; and at least a rolling element-retaining surface of each of the pocket members is made of a second resin composition containing fluorocarbon resin as a main component thereof. The molding of the first resin composition has a tensile strength of not less than 30 MPa and a heat-resistant temperature of not less than 200° C. The second resin composition is a fluorocarbon resin composition.

Abstract: A solid lubrication roller bearing capable of stably transferring a lubricant from spacers and reducing wear of a solid lubrication film on the surfaces of rollers is provided. The solid lubrication roller bearing comprises a raceway member having two rolling surfaces, a plurality of rollers forming first members disposed between the rolling surfaces to carry a load and covered with a solid lubrication film, and spacers forming second members interposed between the rollers to hold intervals formed of a self-lubricating material and having a recessed surface in contact with the rollers. Metal balls with a hardness higher than that of the spacer forming third members with a diameter smaller than that of the rollers are interposed between the spacers in at least one position.

Abstract: A formed film is formed on the surface of a metal substrate made of an iron-based metal. Thereafter, the surface of the formed film is subjected to treatment for lessening surface roughness such as rolling. In this arrangement, a member which exhibits a sufficient seizing resistance even after being freed of formed film can be obtained.

Abstract: A rolling device in which damage such as seizure or wear is less liable to occur and which has a long life, even when used under severe conditions such as high speed, heavy load, high temperature and insufficient lubrication. A thrust needle roller bearing includes an inner ring 1, outer ring 2, and a plurality of rolling elements 3 rollably arranged between a raceway surface 1a of inner ring 1 and a raceway surface 2a of outer ring 2. A lubricant film consisting of a solid lubricant is coated over an area equivalent to an area ratio of 75% or more of at least one member of the group consisting of raceway surface 1a of inner ring 1, raceway surface 2a of outer ring 2, and a rolling contact surface 3a of rolling element 3. The thickness of the lubricant film is preferably 0.05 ?m or more and 8 ?m or less.

Abstract: A lubricating structure of a roller bearing including an inner ring, an outer ring and a plurality of rolling elements disposed between the inner and outer rings in a circumferential direction, includes: an annular lubricating member that is formed of solid lubricant and arranged on a side surface of the rolling elements in an axial direction; and a resilient member that urges the lubricating member against the rolling elements. With this arrangement, it is possible to depress breakage of components at a time of assembling the roller bearing, and to enhance a yield of the roller bearing.

Abstract: Lubrication method of a torque transmission device, which device comprises a confinement wherein at least one torque transmission part and at least one rotation guiding rolling bearing of the part are arranged, the bearing comprising a fixed part and a rotary part forming together a bearing area wherein. rolling bodies are arranged to enable the relative rotation of the parts, the method providing in the confinement for a lubricant for the torque transmission part and providing in the bearing area for a porous polymer matrix which encapsulates a lubricant for the operation of the bearing, the porous matrix being provided to be in contact with the rolling bodies, at least on a part of the periphery thereof. The invention also relates to such a torque transmission device.

Abstract: A rolling bearing made of stainless steel is provided which in use conditions where hydrofluoric acid or fluorine grease is present, can prevent boundary lubrication due to invasion of metal corrosion powder into rolling surface of the bearing, and rapid advance of internal wear and which is highly durable and has a long life even if used in metal corrosive environments. A deep-groove rolling bearing is proposed which comprises bearing rings (inner ring and outer ring), rolling elements and a retainer all made of stainless steel, and solidified lubricating oil sealed in the rolling bearing. The solidified lubricating oil is made by heat curing a mixture of lubricating oil or grease containing perfluoropolyether and a thermoplastic resin. Contact seals made of fluorine rubber seal the solidified lubricating oil. Even if metal abrasion powder is produced by effect of perfluoropolyether or hydrofluoric acid, it will be held embedded in the solidified lubricating oil, so that abnormal wear will not occur.