JP2008232162A - Rolling bearing - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rolling bearing, in which seizing of inner and outer rings and rolling elements is not susceptible to occurrence, and stirring resistance caused by lubricating liquid can be reduced. <P>SOLUTION: A tapered roller bearing has the outer ring 1, the inner ring 2, tapered rollers 3, and a cage 5, in which the lubricating liquid flows toward the outer ring 1 and the inner ring 2 from one side in an axial direction to the other side in the axial direction. In the tapered roller bearing, an annular groove 40 is formed to an end surface on a tapered rollers 3 side in a second annular part 21. Solid lubricant 6 is disposed in the annular groove 40. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a rolling bearing, and particularly suitable for supporting the pinion shaft of a vehicle pinion shaft support device having a pinion shaft such as a differential gear device, a transfer device, or a transaxle device. Related to bearings.

  Conventionally, as a rolling bearing, there is a tapered roller bearing described in JP-A-11-48805 (Patent Document 1). This tapered roller bearing has an inner ring, an outer ring, and a tapered roller. The inner ring has a large collar portion in contact with the large-diameter end surface of the tapered roller on the large-diameter side of the conical raceway surface. The inner peripheral surface of the inner ring is fixed to a pinion shaft of the differential gear device, while the outer peripheral surface of the outer ring is fixed to an annular partition wall in the differential gear device.

  The tapered roller bearing has an opening on the small-diameter side of the conical raceway surface of the inner ring between the inner peripheral surface of the outer ring and the outer peripheral surface of the inner ring, and the oil flowing through the oil passage from the ring gear of the differential gear device. The outer ring, the inner ring and the tapered roller are prevented from seizing by flowing from the inner ring to the opening on the larger diameter side of the conical raceway surface of the inner ring.

  In the conventional tapered roller bearing described above, there is a demand for greatly reducing the agitation resistance of oil and greatly reducing the torque. However, if the amount of oil flowing through the tapered roller bearing is limited to a very small amount in order to greatly reduce the oil stirring resistance, which is a major factor of torque, for the purpose of greatly reducing torque, the inner ring Oil may not spread sufficiently to the sliding portion between the portion and the large-diameter end surface of the tapered roller, and the sliding portion may be difficult to lubricate.

On the other hand, if a sufficient amount of oil to lubricate the sliding portion without problems is supplied into the tapered roller bearing, the torque resulting from the oil agitation resistance increases, making it impossible to achieve a significant reduction in torque. .
Japanese Patent Laid-Open No. 11-48805 (FIG. 1)

  Accordingly, an object of the present invention is to provide a rolling bearing in which seizure hardly occurs on inner and outer rings and rolling elements and the stirring resistance by the lubricating liquid can be reduced.

In order to solve the above problems, the rolling bearing of the present invention is
In a rolling bearing having an outer ring, an inner ring, a rolling element, and a cage, and in which a lubricating liquid flows from one axial direction to the other axial direction between the inner ring and the outer ring,
The outer ring has a raceway surface having an inner diameter that increases from one of the axial directions to the other of the axial direction, and the inner ring has an outer diameter that increases from one of the axial directions to the other of the axial direction. Has a large orbital surface,
The cage has an annular portion on the other side in the axial direction of the rolling element,
The annular portion has a recess in a portion facing the rolling element of the annular portion in the axial direction,
A solid lubricant is disposed in the recess.

  According to the present invention, since the solid lubricant is disposed in the concave portion formed in the portion of the annular portion facing the rolling element in the axial direction, a lubricating liquid (lubricant) is provided between the outer ring and the inner ring. When oil or cleaning liquid is present more than necessary, excess lubricating liquid can be absorbed and retained by the solid lubricant, and the amount of lubricating liquid positioned between the outer ring and the inner ring can be reduced. Therefore, the stirring resistance resulting from the lubricating liquid can be reduced, and the torque can be reduced.

  On the other hand, when the amount of the lubricating liquid located between the outer ring and the inner ring is insufficient, the lubricating component oozes out from the solid lubricant as the cage temperature rises due to the lack of lubrication, and the oozing out from the solid lubricant. The lubricating component that has been fed can be supplied to the rolling elements. Also, the lubricating component can be supplied from the rolling element to the sliding portion of the inner and outer rings with the rolling element by the rotation and revolution of the rolling element. Therefore, even when the amount of the lubricating liquid located between the outer ring and the inner ring is insufficient, seizure of the inner and outer rings and the rolling elements can be suppressed.

  In one embodiment, the rolling element is a tapered roller, the raceway surface of the inner ring is a conical raceway surface, and the inner ring has a flange on the large diameter side of the conical raceway surface. ing.

  Under the condition of micro-lubrication, seizure is likely to occur on the tapered roller guide surface of the flange portion on the large diameter side of the conical raceway surface of the inner ring.

  According to the embodiment, when the lubricating liquid is insufficient, the lubricating component that has oozed out of the solid lubricant can be supplied to the tapered roller guide surface of the flange portion of the inner ring through the rolling elements. Therefore, seizure of the tapered roller guide surface of the inner ring can be suppressed, and the life of the rolling bearing can be extended.

  Moreover, in one embodiment, the end surface of the annular portion on the tapered roller side in the axial direction extends in the circumferential direction of the annular portion and has an annular groove including the concave portion, and the solid lubricant is In the annular groove, it is disposed over the entire circumference in the circumferential direction.

  According to the above-described embodiment, even when the portion of the solid lubricant that overlaps the tapered roller in the axial direction decreases due to the supply of the lubricating component exuded from the solid lubricant to the end face of the tapered roller, the solid lubricant Since the portion that does not overlap the tapered roller in the axial direction moves to a position overlapping the tapered roller in the axial direction, the lubricant can be supplied to the end surface of the tapered roller for a long period of time. Therefore, seizure of the inner and outer rings and the tapered rollers can be suppressed over a long period of time.

  In one embodiment, the raceway surface of the outer ring is a spherical raceway, the rolling element is a convex roller corresponding to the spherical raceway, and the inner race is on the large diameter side of the raceway surface of the inner race. Has a buttocks.

  According to the above embodiment, when the lubricating liquid is insufficient, the lubricant can be supplied from the solid lubricant to the convex roller guide surface of the flange portion of the inner ring via the convex roller. Therefore, seizure of the convex roller guide surface of the inner ring can be suppressed, and the life of the rolling bearing can be extended.

  According to the rolling bearing of the present invention, since the solid lubricant is disposed in at least a part of the annular portion that overlaps the rolling element in the axial direction, the lubricating liquid is present more than necessary between the outer ring and the inner ring. In some cases, the solid lubricant can absorb excess lubricating liquid, and the amount of the lubricating liquid positioned between the outer ring and the inner ring can be reduced. Therefore, the stirring resistance caused by the lubricating liquid can be reduced, and the torque can be reduced.

  On the other hand, when the amount of the lubricating liquid located between the outer ring and the inner ring is insufficient, the lubricant can be supplied from the solid lubricant to the rolling elements, and further, the inner and outer rings can be supplied via the rolling elements. The lubricant can be supplied to the sliding portion with the rolling element. Therefore, even when the amount of the lubricating liquid located between the outer ring and the inner ring is insufficient, seizure of the inner and outer rings and the rolling elements can be suppressed.

  Hereinafter, the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a sectional view in the axial direction of a tapered roller bearing which is a first embodiment of a rolling bearing of the present invention.

  This tapered roller bearing uses a pinion shaft of a vehicle pinion shaft support device, such as a differential gear device, a transaxle device, or a transfer device, which is in a lubricating condition using relatively high viscosity oil. It is rotatably supported with respect to the housing.

  The tapered roller bearing includes an outer ring 1, an inner ring 2, a plurality of tapered rollers 3 as rolling elements, a cage 5, and a solid lubricant 6.

  The outer ring 1 has a conical raceway surface 11, while the inner ring 2 is located on a conical raceway surface 12, a small flange portion 13 located on the small diameter side of the conical raceway surface 12, and a large diameter side of the conical raceway surface 12. And a large collar part 14. The gear oil in the vehicle pinion shaft support device as an example of the lubricating liquid flows from the opening on the small diameter side of the conical raceway surface 12 of the inner ring 2 between the outer ring 1 and the inner ring 2 in the direction indicated by the arrow a in FIG. The conical raceway surface 12 flows through the opening on the large diameter side by centrifugal force.

  The tapered roller 3 has a small-diameter end surface 30 and a large-diameter end surface 31. The large-diameter end surface 31 is located on the large-diameter side of the conical raceway surface 12 of the inner ring 2 with respect to the small-diameter end surface 30 in the axial direction (more precisely, the axial direction of the inner ring 2). Each of the small-diameter end surface 30 and the large-diameter end surface 31 has a circular shape, and the diameter of the large-diameter end surface 31 is larger than the diameter of the small-diameter end surface 30. The plurality of tapered rollers 3 are disposed between the conical raceway surface 11 of the outer ring 1 and the conical raceway surface 12 of the inner ring 2 at intervals in the circumferential direction while being held by the cage 5. Yes.

  The cage 5 includes a first annular portion 20, a second annular portion 21, and a plurality of column portions 24. The second annular portion 21 is located on the larger diameter side of the conical raceway surface 12 of the inner ring 2 than the first annular portion 20 in the axial direction. Each column portion 24 connects the first annular portion 20 and the second annular portion 21. The plurality of column parts 24 are arranged at intervals in the circumferential direction of the first annular part 20. A portion surrounded by the first annular portion 20, the second annular portion 21, and the two column portions 24 adjacent in the circumferential direction is a pocket in which the tapered roller 3 is accommodated.

  The second annular portion 21 has an annular groove 40 extending in the circumferential direction at an inner portion in the radial direction with respect to the connecting portion with the column portion 24 in the second annular portion 21. The annular groove 40 includes a portion facing the tapered roller 3 in the second annular portion 21 in the axial direction.

  The solid lubricant 6 is manufactured using two-color molding and is disposed in the annular groove 40. The solid lubricant 6 is made of, for example, a mixture of a resin and a lubricating component. In this case, as the resin, for example, ultrahigh molecular weight polyethylene, polypropylene, polymethylpentene, and the like can be used. Among them, ultrahigh molecular weight polyethylene is preferably used because it has excellent mechanical properties. Furthermore, as such ultra high molecular weight polyethylene, those having an average molecular weight of about 1 million to 6 million, particularly 2 million or more and a melting point of about 80 to 140 ° C. are preferably used.

  Moreover, various additives, such as antioxidant, a stabilizer, and a coloring agent, can also be mix | blended with said resin in the ratio comparable as the past as needed. The resin is preferably supplied as a granular material. Although the particle diameter of the resin granular material is not particularly limited, the average particle diameter is usually preferably about 5 to 100 μm, more preferably about 10 to 30 μm.

  As a lubricating component which comprises the solid lubricant 6 with resin, various lubricating oils can be used, for example. Here, the lubricating oil is particularly suitable that does not react with the resin by heating at the time of solidifying the resin raw material and the lubricating component, thereby reducing the mechanical properties of the resin. Examples of the lubricating oil that can be used as the lubricating component include mineral oil, poly-α-olefin oil, diester oil, polyol ester oil, alkyl diphenyl ether oil, silicone oil, paraffin oil, fluorine oil, and the like.

  In order to improve lubricity, stability and other characteristics, various additives can be blended with the lubricating oil that can be used as the lubricating component. As the lubricating component, the above-described lubricating oils can be used alone, or two or more of the above-described lubricating oils can be used in combination. The blending amount of the resin constituting the solid lubricant 6 and the lubricating component is not particularly limited, but it is preferable to blend both so that the ratio of the resin to the total amount of the lubricating composition is 10 to 50% by weight. preferable. Further, as a material of the solid lubricant 6, a blend of urethane polymer, grease and aromatic polyamine curing agent can be used. Further, it is preferable that the same oil as the lubricating oil (in this embodiment, gear oil) is contained in the solid lubricant.

  As shown in FIG. 1, in the cross section in the axial direction, the second annular portion 21 includes a radially outermost point 50 on the end surface constituting the pocket of the first annular portion 20 and the outer ring 1. It is located on the outer side in the radial direction from the line 51 parallel to the central axis. In this way, when the cage 5 is injection-molded, the releasability of the annular groove 40 into which the solid lubricant 6 enters is improved.

  According to the tapered roller bearing of the above embodiment, the solid lubricant 6 is disposed in the annular groove 40 formed in the portion including the portion facing the tapered roller 3 in the axial direction of the second annular portion 21. When there is more gear oil as the lubricating liquid between the outer ring 1 and the inner ring 2 than necessary, the extra gear oil can be absorbed and held by the solid lubricant 6 and located between the outer ring 1 and the inner ring 2. The amount of gear oil can be reduced. Therefore, the stirring resistance resulting from the gear oil can be reduced, and the torque can be reduced.

  On the other hand, when the amount of gear oil located between the outer ring 1 and the inner ring 2 is insufficient, a lubricating component oozes out from the solid lubricant 6 as the temperature of the cage 5 rises due to lack of lubrication, and this solid lubricant The lubricating component exuding from 6 can be supplied to the large-diameter end surface 31 of the tapered roller 3. Further, by the rotation and revolution of the tapered roller 3, the lubricating component can be supplied from the large-diameter end surface 31 of the tapered roller 3 to the rolling part and sliding part of the inner and outer rings 1, 2 with the tapered roller 3. Therefore, even when the amount of gear oil is insufficient between the outer ring 1 and the inner ring 2, seizure of the inner and outer rings 1, 2 and the tapered roller 3 can be suppressed. At the start of use of the tapered roller bearing, the shortest distance between the solid lubricant 6 and the large-diameter end surface 31 is the shortest distance between the end surface constituting the pocket of the second annular portion 21 and the large-diameter end surface 31. It is preferable to set the distance to be equal to or less than the distance because it is easy to supply the lubricating component from the solid lubricant 6 to the large-diameter end surface 31.

  In addition, even when the amount of gear oil is insufficient between the outer ring 1 and the inner ring 2, seizure of the inner and outer rings 1, 2 and the tapered roller 3 can be suppressed. Can be used in a lubrication environment.

  Further, when the lubricating liquid is insufficient, seizure is likely to occur on the tapered roller guide surface 60 of the large collar portion 14 on the large diameter side of the conical raceway surface 12 of the inner ring 2, but the tapered roller bearing of the above embodiment. According to this, even when the gear oil that is the lubricating liquid is insufficient, the lubricating component that has oozed out from the solid lubricant 6 can be supplied to the tapered roller guide surface 60 of the large collar portion 14 of the inner ring 2 via the tapered roller 3. . Therefore, seizure of the tapered roller guide surface 60 of the inner ring 2 can be suppressed, and the life of the tapered roller bearing can be extended.

  Further, according to the tapered roller bearing of the above-described embodiment, the annular groove 40 where the solid lubricant 6 is disposed has a portion that does not face the large-diameter end surface of the tapered roller 3 in the axial direction. Even when the lubricating component exuded from the lubricant 6 is supplied to the large-diameter end surface 31 of the tapered roller 3, the lubricating component in the portion facing the large-diameter end surface 31 in the solid lubricant 6 in the axial direction is reduced. In the solid lubricant 6, the portion of the lubricating component that does not face the large-diameter end surface 31 in the axial direction moves to a position facing the large-diameter end surface 31 in the axial direction. A lubricating component can be supplied to 31. Therefore, seizure of the inner and outer rings 1 and 2 and the tapered roller 3 can be suppressed over a long period of time.

  In the tapered roller bearing of the above embodiment, the arrangement space of the solid lubricant 6 is the annular groove 40. However, in this invention, the arrangement space of the solid lubricant is a portion facing the large-diameter end surface of the tapered roller. Any shape may be used as long as it has a recess.

  In the tapered roller bearing of the above embodiment, the lubricating liquid is gear oil. However, in the present invention, the lubricating liquid flows from one of the two openings between the inner ring and the outer ring to the other opening. Any liquid may be used as long as it has a function of flowing and lubricating the raceway surfaces of the inner and outer rings. The lubricating liquid may be a lubricating oil other than gear oil or a cleaning liquid.

  FIG. 2 is a sectional view in the axial direction of a spherical race roller bearing which is a second embodiment of the rolling bearing of the present invention.

  This spherical roller bearing includes an outer ring 101, an inner ring 102, two rows of convex rollers on one side in the axial direction (hereinafter abbreviated as one convex roller) 103a, and a plurality of convex rollers on the other side in the axial direction ( (Hereinafter abbreviated as the other-side convex roller) 103b, a cage 105, and a solid lubricant 106.

  The outer ring 101 has a spherical raceway surface 111 on the inner periphery and a lubricating oil discharge hole 115 penetrating the inner periphery and outer periphery of the outer ring 101 formed at a predetermined interval in the circumferential direction. The one-side convex roller 103a and the other-side convex roller 103b have rolling surfaces having a radius substantially the same as the radius of the spherical raceway surface 111 in a cross section including the central axis of the convex roller. On the other hand, the inner ring 102 has substantially the same radius as the radius of the spherical raceway surface 111 in a cross section including the central axis of the inner ring 102 corresponding to the plurality of one-side convex rollers 103a and the other-side convex rollers 103b in the two rows. Two rows of the one-side inner ring raceway surface 112a, the other-side inner ring raceway surface 112b, the one-side small ring portion 113a located on the small-diameter side of the one-side inner ring raceway surface 112a, and the large-diameter side of the one-side inner-ring raceway surface 112a The other side small collar portion 113b positioned on the small diameter side of the other side inner ring raceway surface 112b, and the other side large collar position positioned on the large diameter side of the other side inner ring raceway surface 112b. Part 114b. As an example of the lubricating liquid, the lubricating oil opens in the axial direction of the inner ring raceway surface of the inner ring 102 and the other inner ring raceway surfaces 112a and 112b between the outer ring 101 and the inner ring 102 in the direction indicated by the arrow b in FIG. To the lubricating oil discharge hole 115.

  The one side convex roller 103a has one side outer end surface 130a and one side inner end surface 131a. The one side inner end surface 131a is located on the larger diameter side of the one side inner ring raceway surface 112a of the inner ring 102 than the one side outer end surface 130a in the axial direction (more precisely, the axial direction of the inner ring 102). Each of the one side outer end surface 130a and the one side inner end surface 131a has a circular shape, and the diameter of the one side outer end surface 130a is equal to the diameter of the one side inner end surface 131a. The plurality of convex rollers 103a are arranged at intervals in the circumferential direction while being held by the cage 105 between the spherical raceway surface 111 of the outer ring and the one side inner raceway surface 112a of the inner ring 102. Yes.

  The other side convex roller 103b has the other side outer end surface 130b and the other side inner end surface 131b. The other side inner end surface 131b is located on the larger diameter side of the other side inner ring raceway surface 112b of the inner ring 102 than the other side outer end surface 130b in the axial direction (exactly the axial direction of the inner ring 102). Each of the other side outer end surface 130b and the other side inner end surface 131b has a circular shape, and the diameter of the other side outer end surface 130b is equal to the diameter of the other side inner end surface 131b. The plurality of convex rollers 103b are arranged at intervals in the circumferential direction while being held by the cage 105 between the spherical raceway surface 111 of the outer ring and the other side inner raceway surface 112b of the inner ring 102. Yes.

  The cage 105 includes an annular portion 120, a plurality of one-side column portions 124a projecting from the annular portion 120 to one side in the axial direction, and a plurality of other side column portions projecting from the annular portion 120 to the other axial direction. 124b. The plurality of one-side column portions 124 a are arranged at intervals in the circumferential direction of the annular portion 120. The plurality of other side column portions 124b are spaced apart from each other in the circumferential direction of the annular portion 120, and are alternately disposed with the one side column portion 124a in the circumferential direction. The portion surrounded by the two one-side column portions 124a and the annular portion 120 adjacent to each other in the circumferential direction is a pocket that accommodates the one-side convex roller 103a, and two other side columns adjacent to each other in the circumferential direction. A portion surrounded by the portion 124b and the annular portion 120 is a pocket in which the other convex roller 103b is accommodated.

  The annular portion 120 has a first annular groove 140a and a second annular groove 140b extending in the circumferential direction so as to open to the outer peripheral surface and the outer diameter side of the pocket. The solid lubricant 106 includes a one-side solid lubricant 106a disposed in the one-side annular groove 140a and a second-side solid lubricant 106b disposed in the other-side annular groove 140b. The solid lubricant 106 is selected from those described in the first embodiment.

  According to the spherical race roller bearing of the second embodiment, the solid lubricant 106a is formed in the annular grooves 140a and 140b formed in the portions including the portions facing the convex rollers 103a and 103b on both axial sides of the annular portion 120. , 106b is provided, and when the lubricating oil as the lubricating liquid exists more than necessary between the outer ring 101 and the inner ring 102, the solid lubricant 106a, 106b can absorb and retain the excess lubricating oil. Thus, the amount of lubricating oil located between the outer ring 101 and the inner ring 102 can be reduced. Therefore, the stirring resistance due to the lubricating oil can be reduced, and the torque can be reduced.

  On the other hand, when the amount of the lubricating oil located between the outer ring 101 and the inner ring 102 is insufficient, the lubricating component oozes out from the solid lubricants 106a and 106b as the cage 105 is heated due to lack of lubrication, and this solid Lubricating components oozing out from the lubricants 106a and 106b can be supplied to the inner end surfaces 131a and 131b of the convex rollers 103a and 103b. Further, by the rotation and revolution of the convex rollers 103a and 103b, the lubrication component is transferred from the inner end surfaces 131a and 131b of the convex rollers 103a and 103b to the convex rollers 103a and 103b of the inner and outer rings 101 and 102, and sliding portions. Can supply. Therefore, even when the amount of lubricating oil is insufficient between the outer ring 101 and the inner ring 102, seizure of the inner and outer rings 101, 102 and the convex rollers 103a, 103b can be suppressed. At the start of use of the spherical race roller bearing, the shortest distance between the solid lubricants 106a and 106b and the inner end surfaces 131a and 131b is the end surface constituting the pocket of the annular portion 120, and the inner end surfaces 131a and 131b. Is preferably set to be equal to or less than the shortest distance between the solid lubricants 106a and 106b and the inner end surfaces 131a and 131b can be easily supplied with the lubricating component.

  In addition, even when the amount of lubricating oil is insufficient between the outer ring 101 and the inner ring 102, seizure of the inner and outer rings 101, 102 and the convex rollers 103a, 103b can be suppressed. Spherical roller bearings can be used in a minute lubrication environment.

  Further, when the lubricating liquid is insufficient, seizure is likely to occur on the convex roller guide surfaces 160a and 160b of the large flange portions 114a and 114b on the large diameter side of the inner ring raceway surfaces 112a and 112b of the inner ring 101. According to the spherical race roller bearing of the second embodiment, even when the lubricating oil that is the lubricating liquid is insufficient, the lubricating component that has oozed out from the solid lubricants 106a and 106b is transferred to the inner ring via the convex rollers 103a and 103b. 102 can be supplied to the convex roller guide surfaces 160a and 160b of the large collar portions 114a and 114b. Therefore, seizure of the convex roller guide surfaces 160a and 160b of the inner ring 102 can be suppressed, and the life of the spherical race roller bearing can be extended.

  In addition, according to the spherical race roller bearing of the second embodiment, the annular grooves 140a and 140b, which are the locations where the solid lubricants 106a and 106b are disposed, are located where the inner end face of the convex roller 103 does not face the axial direction. Therefore, the inner end surfaces 131a and 131b of the solid lubricants 106a and 106b are supplied by supplying the lubricating component exuded from the solid lubricants 106a and 106b to the inner end surfaces 131a and 131b of the convex rollers 103a and 103b. Even when the amount of the lubricating component in the portion facing the surface of the solid lubricant 106a, 106b decreases, the lubricating component in the portion that does not face the inner end surfaces 131a, 131b in the solid lubricant 106a, 106b in the axial direction is in the axial direction on the inner end surfaces 131a, 131b. Since it moves to the opposite position, the inner end surfaces 131a and 131b of the convex rollers 103a and 103b are lubricated for a long time. It can be supplied. Therefore, seizure of the inner and outer rings 101 and 102 and the convex rollers 103a and 103b can be suppressed over a long period of time.

  In the spherical roller bearing of the second embodiment, the arrangement space for the solid lubricants 106a and 106b is the annular grooves 140a and 140b. However, in this invention, the arrangement space for the solid lubricant is that of the convex roller. Any shape may be used as long as the recess has a portion facing the inner end surface.

  In the spherical raceway roller bearing of the second embodiment, the lubricating liquid is lubricating oil. In the present invention, the lubricating liquid is supplied to the lubricating oil discharge hole from the two openings between the inner ring and the outer ring. Any liquid may be used as long as it has a function of flowing and lubricating the raceway surfaces of the inner and outer rings. The lubricating liquid may be a gear oil or a cleaning liquid other than the lubricating oil.

It is sectional drawing of the axial direction of the tapered roller bearing which is 1st Embodiment of the rolling bearing of this invention. It is sectional drawing of the axial direction of the spherical race roller bearing which is 2nd Embodiment of the rolling bearing of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,101 Outer ring 2,102 Inner ring 3 Tapered roller 5,105 Cage 6,106a, 106b Solid lubricant 11,12 Conical raceway surface 21 Second annular portion 31 Large diameter end surface 40 Annular groove 103a One side convex roller 103b The other side Convex roller 111 Spherical raceway surface 112a One side inner ring raceway surface 112b Other side inner ring raceway surface 114a, 114b Large collar portion 160a, 160b Convex roller guide surface

Claims (4)

In a rolling bearing having an outer ring, an inner ring, a rolling element, and a cage, and in which a lubricating liquid flows from one axial direction to the other axial direction between the inner ring and the outer ring,
The outer ring has a raceway surface having an inner diameter that increases from one of the axial directions to the other of the axial direction, and the inner ring has an outer diameter that increases from one of the axial directions to the other of the axial direction. Has a large orbital surface,
The cage has an annular portion on the other side in the axial direction of the rolling element,
The annular portion has a recess in a portion facing the rolling element of the annular portion in the axial direction,
A rolling bearing, wherein a solid lubricant is disposed in the recess. The rolling bearing according to claim 1,
The rolling element is a tapered roller, and the raceway surface of the inner ring is a conical raceway surface,
The rolling bearing according to claim 1, wherein the inner ring has a flange on the large diameter side of the conical raceway surface. The rolling bearing according to claim 2,
The end surface of the annular portion on the tapered roller side in the axial direction has an annular groove that extends in the circumferential direction of the annular portion and includes the recess.
The rolling bearing according to claim 1, wherein the solid lubricant is disposed in the annular groove over the entire circumference in the circumferential direction. The rolling bearing according to claim 1,
The raceway surface of the outer ring is a spherical raceway,
The rolling element is a convex roller corresponding to the spherical orbit,
The rolling bearing according to claim 1, wherein the inner ring has a flange on the large diameter side of the raceway surface of the inner ring.

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