JP5245863B2 - Sliding radial rolling bearing - Google Patents

Description

  The present invention relates to a radial rolling bearing which is incorporated in, for example, an automobile transmission (mainly a manual transmission) and enables rotation while allowing axial movement of a predetermined length. For example, a slide ball bearing that uses balls as rolling elements and enables displacement in both directions by rolling the balls is an object.

  As described in Patent Documents 1 to 3, for example, a slide-type radial rolling bearing that enables rotation while allowing axial movement of a predetermined length is incorporated in an automobile transmission. 9 to 11 show an example of a radial rolling bearing that has been widely used for this purpose. This radial rolling bearing 100 is the slide ball bearing described above, and includes an outer ring 1, a cage 2, and a plurality of balls 3, 3 each of which is a rolling element. Of these, the outer ring 1 is made of a hard metal such as bearing steel or case-hardened steel and is formed in a cylindrical shape as a whole, and has inward flange portions 4a and 4b formed at both axial ends. The cage 2 is integrally formed by injection molding a synthetic resin such as polyamide resin or polyphenylene sulfide resin, and includes a pair of rim portions 5 and 5 and a plurality of column portions 6 and 6. . Both the rim portions 5 and 5 are annular with the same diameter, and are arranged concentrically at intervals. Further, each of the column portions 6 and 6 is linear, and between both the rim portions 5 and 5, both end portions are connected to inner edges of the rim portions 5 and 5 facing each other. In such a state, they are arranged in parallel with each other in a circumferentially spaced state. And the part surrounded by the column parts 6 and 6 adjacent to the circumferential direction and the said rim parts 5 and 5 is made into the pockets 7 and 7, respectively.

  The balls 3 and 3 are held in the pockets 7 and 7 so that the balls 7 and 7 can roll freely. Further, the distance D between the inner side surfaces of the flanges 4a and 4b provided at both axial ends of the outer ring 1 is sufficiently larger than the axial length L of the cage 2 (D >> L). ing. Therefore, the cage 2 is supported on the inner diameter side of the outer ring 1 so as to be rotatable and movable in the axial direction based on the rolling of the balls 3 and 3. For example, in the assembled state to the manual transmission, the shaft 8 inserted into the inner diameter side of each of the balls 3 and 3 is inserted into the inner diameter side of the housing 9 in which the outer ring 1 is fitted and fixed. -L) is supported freely.

  When the slide type radial rolling bearing 100 as described above is incorporated in, for example, a select / shift mechanism portion of a manual transmission, a select operation (generally, a gear to be connected is selected by shifting the shift lever in the left-right direction). Operation) to allow relative displacement in the axial direction between the housing 9 and the shaft 8, and shift operation (in general, the shift lever is displaced in the front-rear direction to connect the gear selected by the select operation). ) The relative rotation (swing) of the housing 9 and the shaft 8 is sometimes allowed. In such a slide type radial rolling bearing 100, the inner peripheral surface (outer ring raceway) of the outer ring 1 and the outer peripheral surface (inner ring raceway) of the shaft and the balls 3, 3, as in a general rolling bearing. It is necessary to supply lubricating oil to a contact portion (rolling contact portion or sliding contact portion) with the rolling surface. During the selection operation of the manual transmission, the cage 2 and the balls 3 and 3 are displaced in the axial direction in the outer ring 1 while pushing away the lubricating oil.

  However, in the case of such a structure, for example, when the cage 2 and the balls 3 and 3 are displaced in the axial direction of the outer ring 1 on the inner diameter side of the outer ring 1 for the select operation, Receive resistance. That is, during the selection operation, the retainer 2 and the balls 3 and 3 are pushed by lubricating oil in a cylindrical space existing between the inner peripheral surface of the outer ring 1 and the outer peripheral surface of the shaft 8. It is necessary to displace it in the axial direction while removing it.

Registered Utility Model No. 2592876 Japanese Patent No. 34199947 JP-A-2005-351420

  When the sliding radial rolling bearing 100 is arranged and used inside the housing 9 whose one or both ends are sealed, as in the case of the U-shaped housing 9 shown in FIG. If it exists, the lubricating oil collected in the back of the housing 9 is compressed by the shaft 8 when the shaft 8 moves, so that the torque increases, and the driver may feel heavy during the select operation.

  Further, when the shaft 8 is moved, the balls 3 and 3 in the bearing 100 roll, so that the cage 2 also moves in the direction in which the lubricating oil is compressed. If the gap with the inner diameter of the vessel 2 is narrow, the penetration of the lubricating oil is poor, and the torque during movement of the shaft 8 tends to increase. These phenomena are particularly noticeable when the viscosity resistance of the lubricating oil is large at low temperatures.

  In such a cage 2, the cage 2 holds the balls 3 between the outer rings 1 so that the balls 3 do not come apart due to the problem of assembling. Since it is necessary to make the inner side pocket width smaller than the ball diameter, it is difficult to increase the inner diameter of the cage. In addition, due to this restriction, the inner diameters of the flanges 4a and 4b of the outer ring 1 are also difficult to set a large diameter because they come into contact with the cage end face to prevent the cage 2 from coming off. Therefore, since the gap T between the shaft 6 and the inner diameter of the cage or the flange inner diameter of the outer ring 1 is limited, the penetrability of the lubricating oil is poor, which causes a torque increase when the shaft 8 moves.

  The present invention has been made to eliminate such inconveniences, and an object of the present invention is to provide a slide-type radial rolling bearing that improves the penetrability of lubricating oil in the bearing and reduces the resistance during shaft movement. There is.

The above object of the present invention can be achieved by the following constitution.
(1) A cylindrical outer ring, a cylindrical cage disposed on the inner diameter side of the outer ring, and a plurality of rolling elements that are rotatably held by the cage,
The outer ring is provided with inward flanges at both axial ends,
The retainer has a plurality of pillar portions arranged in parallel with each other at equal intervals in a circumferential direction between a pair of rim portions that are annular and are concentrically arranged with each other. The portions formed by the column portions adjacent to each other in the circumferential direction are pockets, and the interval between the outer surfaces of the two rim portions is smaller than the interval between the inner surfaces of the both flange portions,
In each of the pockets, a plurality of rolling elements are disposed, and the cage is axially movable between the both flange portions of the outer ring , and in a slide-type radial rolling bearing capable of rotating ,
Sliding radial rolling bearing, characterized in that said retainer has only set an oil passage for reducing the hydraulic resistance during axial movement to the pillar portion.
(2) comprising a cylindrical inner ring, a cylindrical cage disposed on the outer diameter side of the inner ring, and a plurality of rolling elements held by the cage so as to roll freely;
The inner ring is provided with outward flanges at both axial ends,
The retainer has a plurality of pillar portions arranged in parallel with each other at equal intervals in a circumferential direction between a pair of rim portions that are annular and are concentrically arranged with each other. The portions formed by the column portions adjacent to each other in the circumferential direction are pockets, and the interval between the outer surfaces of the two rim portions is smaller than the interval between the inner surfaces of the both flange portions,
In each of the pockets, a plurality of the rolling elements are disposed, and the cage is axially movable between the both flange portions of the inner ring , and in a slide-type radial rolling bearing capable of rotating ,
Sliding radial rolling bearing, characterized in that said retainer has only set an oil passage for reducing the hydraulic resistance during axial movement to the pillar portion.
(3) The sliding path according to (1) or (2), wherein the oil passage is a through groove formed between bent portions in which both end portions in the circumferential direction of the column portion are bent in a radial direction. Radial rolling bearing.

According to the sliding type radial rolling bearing described in the above (1) of the present invention, the oil passage is provided in the column part, so that the penetration of the lubricating oil in the bearing is good and the resistance during the shaft movement is reduced. Can do.
In addition, the oil passage is a through groove formed between the bent portions obtained by bending both ends in the circumferential direction of the pillar portion in the radial direction, so the ball contact position can be freely set by adjusting the amount of bending, so that the cage The inner diameter can be increased, and the gap between the shaft and the inner diameter of the cage can be increased, so that the penetration of the lubricating oil can be improved. As a result, the inner diameter of the flange portion of the outer ring that comes into contact with the cage end face can be increased, and the penetrability of the lubricating oil is dramatically improved.

According to the slide type radial rolling bearing according to the above (2) of the present invention, the oil passage is provided in the column portion, so that the penetrability of the lubricating oil in the bearing is good and the resistance during the shaft movement is reduced. Can do.
In addition, the oil passage is a through groove formed between the bent portions obtained by bending both ends in the circumferential direction of the pillar portion in the radial direction, so the ball contact position can be freely set by adjusting the amount of bending, so that the cage Since the outer diameter can be reduced and the gap between the housing and the outer diameter of the cage can be increased, the penetrability of the lubricating oil can be improved. Accordingly, the outer diameter of the flange portion of the inner ring that comes into contact with the cage end face can be reduced, and the penetration of the lubricating oil is dramatically improved.

It is a fragmentary sectional view of the transmission for vehicles carrying the slide type radial rolling bearing concerning a 1st embodiment of the present invention. It is a fragmentary perspective view of the slide-type radial rolling bearing of FIG. It is sectional drawing of the slide-type radial rolling bearing of FIG. It is a fragmentary sectional view of the transmission for motor vehicles carrying the slide type radial rolling bearing which concerns on 2nd Embodiment of this invention. FIG. 5 is a partial perspective view of the sliding type radial rolling bearing of FIG. 4. It is sectional drawing of the slide-type radial rolling bearing of FIG. It is sectional drawing of the slide type radial rolling bearing which concerns on 3rd Embodiment of this invention. It is a graph explaining the difference of the resistance value in an Example and a comparative example. It is a fragmentary sectional view of the transmission for motor vehicles carrying the conventional slide type radial rolling bearing. FIG. 10 is a partial perspective view of the sliding radial rolling bearing of FIG. 9. FIG. 10 is a sectional view of the sliding radial rolling bearing of FIG. 9.

  The slide-type radial rolling bearing of the present invention is a slide-type radial rolling bearing that is incorporated in, for example, an automobile transmission (mainly a manual transmission) and that allows axial movement of a predetermined length and enables rotation. . Hereinafter, a slide type radial rolling bearing according to each embodiment of the present invention will be described with reference to the drawings.

<First Embodiment>
As shown in FIG. 1, the sliding radial rolling bearing 10 of the present embodiment is configured to include an outer ring 11, a cage 12, and a plurality of balls 13, 13 each of which is a rolling element, and one end is It is press-fitted into a sealed housing 19 having a U-shaped cross section, and a shaft 18 is inserted into the inner diameter side of the balls 13 and 13.

  The outer ring 11 is made of a hard metal such as bearing steel or case-hardened steel and is formed in a cylindrical shape as a whole, and has inward flange portions 14a and 14b formed at both ends in the axial direction.

  As shown in FIG. 2, the retainer 12 includes a pair of rim portions 15 and 15 and a plurality of column portions 16 and 16. Both the rim portions 15 and 15 are circular with the same diameter, are arranged concentrically with a space between each other, and a plurality of column portions 16 and 16 in which a plurality of the rim portions 15 and 15 are arranged at predetermined intervals in the circumferential direction. It is connected with. Each of the column parts 16 and 16 has a columnar body 16a and 16a having the same thickness as the rim 15 and formed in a column shape, and both circumferential ends of the column body 16a and 16a are bent radially inward. Bending portions 16b and 16b are provided. And the part enclosed by the column parts 16 and 16 adjacent to the circumferential direction and the said rim parts 15 and 15 is set as the pockets 17 and 17, respectively.

  As shown in FIG. 3, each column portion 16 configured in this way has a substantially inverted U-shaped cross section, and bends 16 b and 16 b on both the inner peripheral surface of the column body 16 a and both sides of the column body 16 a. As a result, a through groove 50 extending in the axial direction is formed between the shaft 18 inserted into the inner diameter side of each ball 13, 13 and the column portion 16.

  Here, the inner diameter of the column portion main body 16 a is set to be substantially the same as the pitch circle diameter of the balls 13. And the internal diameter of the collar parts 14a and 14b of the outer ring | wheel 11 is set substantially the same as the internal diameter of the pillar part main body 16a. Therefore, a clearance T ′ is secured between the shaft 16 and the inner peripheral surface of the column body 16a, which is the inner diameter of the cage, and between the shaft 16 and the inner diameter ends of the flanges 14a and 14b of the outer ring 11. .

  The axial length of the bent portion 16b is shorter than the axial length of the column main body 16a, and relief grooves 16c are provided at both axial ends of the column main body 16a to facilitate the formation of the bent portion 16b. . Further, in addition to the escape groove 16c, a groove or a notch extending in the axial direction is provided at the boundary between the inner peripheral surface of the column main body 16a and the bent portions 16b and 16b on both sides of the column main body 16a, or the bent portion The plate thickness of 16b, 16b may be made thinner than the plate thickness of the column portion main body 16a, which makes it easier to form the bent portion 16b.

  In each of these pockets 17, 17, balls 13, 13 are held so as to be able to roll freely for each pocket 17, 17 (four in this case), and each ball 13 has a column portion 16 adjacent in the circumferential direction, It is supported by 16 bent portions 16b and 16b. The shape of the contact portion between the bent portion 16b of the column portion 16 and the ball 13 may be a gentle curve, a set of a plurality of curves, or a linear shape.

  The cage 12 is made of high carbon steel, low carbon steel, carburized steel, or the like. For example, after pressing a single plate material into a predetermined shape and then rounding and welding both ends, or cutting a cylindrical member After processing, the end portions of the column body 16a, 16a located on both sides of the pocket 17 are bent from the outer diameter side of the pocket 17 with the pressing member to form the bent portions 16b, 16b, or polyamide 46 or polyamide 66 These are integrally formed by injection molding a resin material such as polyamide resin.

  The distance D between the inner side surfaces of the flanges 14a, 14b provided at both axial ends of the outer ring 11 is the distance between the outer surfaces of the rim parts 15, 15 of the cage 2. It is sufficiently larger than the axial length L (D >> L). Therefore, the cage 12 is supported on the inner diameter side of the outer ring 11 and between the flanges 14a and 14b so as to be rotatable and movable in the axial direction based on the rolling of the balls 13 and 13. In an assembled state to the manual transmission, a predetermined amount (DL) of rotation and axial direction of the shaft 18 inserted into the inner diameter side of the balls 13 and 13 in the housing 19 in which the outer ring 11 is fitted and fixed. Support the displacement of freely.

  As described above, according to the slide type radial rolling bearing 10 of the present embodiment, the oil passage that is the through groove 50 extending in the axial direction is provided in the column portion 16, thereby allowing the lubricating oil in the bearing 10 to penetrate. The resistance when the shaft 18 is moved can be reduced. That is, when the shaft 18 is moved, even if the lubricating oil accumulated in the back of the housing 19 is compressed by the movement of the shaft 18, the lubricating oil can escape to the opposite side through the oil passage. As a result, when the slide type radial rolling bearing 10 is used by being incorporated in the select / shift mechanism portion of the manual transmission, the driver can execute the shift change of the manual transmission without a sense of incongruity even at low temperatures.

  Further, according to the slide type radial rolling bearing 10 of the present embodiment, the oil passage is the through groove 50 formed between the bent portions 16b and 16b formed by bending both circumferential ends of the column portion 16 radially inward. Therefore, the ball contact position can be freely set by adjusting the amount of bending, so that the inner diameter of the cage can be increased, and the penetration of the lubricating oil is improved. Accordingly, the inner diameters of the flange portions 14a and 14b of the outer ring 11 that come into contact with the cage end surface can be increased. As a result, the gap T 'between the shaft 18 and the inner diameter of the flange portion becomes larger than the gap T in the conventional sliding radial rolling bearing 100, and the penetrability of the lubricating oil is greatly improved.

  Further, according to the slide type radial rolling bearing 10 of the present embodiment, the axial length of the bent portion 16b is slightly shorter than the axial length of the column main body 16a, and it is bent at both axial ends of the column main body 16a. Since the escape groove 16c that facilitates the molding of the portion 16b is provided, the bent portion 16b can be easily formed.

Second Embodiment
As shown in FIG. 4, the slide-type radial rolling bearing 20 of the present embodiment includes an inner ring 21, a cage 22, and a plurality of balls 23 and 23, each of which is a rolling element. Is fitted on the shaft, and a housing 29 having a U-shaped cross-section is provided on the outer diameter side of the balls 23, 23.

  The inner ring 21 is made of a hard metal such as bearing steel or case-hardened steel and is formed in a cylindrical shape as a whole, and has outward flanges 24a and 24b at both axial ends.

  As shown in FIG. 5, the retainer 22 includes a pair of rim portions 25, 25 and a plurality of column portions 26, 26. Both the rim portions 25, 25 are circular with the same diameter, are arranged concentrically with a space between each other, and a plurality of column portions 26, 26 in which a plurality of the rim portions 25, 25 are arranged at predetermined intervals in the circumferential direction. It is connected with. Each of the column portions 26 and 26 has a column main body 26a having the same thickness as the rim portion 25 and formed in a column shape, a bent portion 26b in which both circumferential ends of the column main body 26a are bent radially outward, 26b. The portions surrounded by the column portions 26 and 26 adjacent to each other in the circumferential direction and the rim portions 25 and 25 are pockets 27 and 27, respectively.

  As shown in FIG. 6, each column portion 26 configured in this manner has a substantially U-shaped cross section, and is constituted by the outer peripheral surface of the column body 26 a and the bent portions 26 b and 26 b on both sides of the column body 26 a. A through groove 51 extending in the axial direction is formed between the housing 29 located on the outer diameter side of each ball 23, 23 and the column part 26.

  Here, the outer diameter of the columnar body 26 a is set to be approximately the same as the pitch circle diameter of the balls 23. And the outer diameter of the collar parts 24a and 24b of the inner ring | wheel 21 is set substantially the same as the outer diameter of the column part main body 26a. Therefore, a clearance T ′ is secured between the housing 29 and the outer peripheral surface of the column body 26a, which is the outer diameter of the cage, and between the housing 29 and the outer diameter end portions of the flange portions 24a and 24b of the inner ring 21. .

  The axial length of the bent portion 26b is shorter than the axial length of the column main body 26a, and clearance grooves 26c for facilitating bending for forming the bent portions 26b are formed at both axial ends of the column main body 26a. Is provided. In addition to the escape groove 26c, an axially extending groove or notch is provided at the boundary between the outer peripheral surface of the column body 26a and the bent portions 26b, 26b on both sides of the column body 26a, or the bent portion 26b. , 26b may be made thinner than the thickness of the column main body 26a, thereby making it easier to form the bent portion 26b.

  In each of these pockets 27, 27, a plurality (four in this case) of balls 27 are held for each pocket 27, 27 so that the balls 23 are freely rollable. 26 are supported by the bent portions 26b and 26b. The shape of the contact portion of the bent portion 26b of the column portion 26 with the ball 23 may be a gentle curve, a set of a plurality of curves, or a linear shape.

  The cage 22 is composed of high carbon steel, low carbon steel, carburized steel, or the like. For example, after pressing a single plate material into a predetermined shape and then rounding and welding both ends, or cutting a cylindrical member After the processing, the end portions of the column body 26a, 26a located on both sides of the pocket 27 are bent from the inner diameter side of the pocket 27 with the pressing member to form the bent portions 26b, 26b, or polyamide 46, polyamide 66, etc. These are formed integrally by injection molding a polyamide-based resin or the like.

  The distance D between the inner side surfaces of the two flange parts 24a, 24b provided at both axial ends of the inner ring 21 is the distance between the outer surfaces of the rim parts 25, 25 of the cage 22. It is sufficiently larger than the axial length L (D >> L). Accordingly, the retainer 22 is supported on the outer diameter side of the inner ring 21 and between the flanges 24a and 24b so as to be rotatable and axially movable based on the rolling of the balls 23 and 23. . In the assembly state to the manual transmission, the shaft 28 on which the inner ring 21 is externally fitted in the housing 29 is supported freely by a predetermined amount (DL) in relation to rotation and axial direction.

As described above, the sliding radial rolling bearing 20 using the inner ring 21 as the bearing ring also has the same operations and effects as the sliding radial rolling bearing 10 of the first embodiment.
That is, by providing an oil passage which is a through hole 51 extending in the axial direction in the column portion 26, the penetrability of the lubricating oil in the bearing 20 is good, and the resistance when the shaft 28 is moved can be reduced. Further, the oil passage is a through groove 51 formed between the bent portions 26b and 26b in which both ends in the circumferential direction of the column portion 26 are bent outward in the radial direction, so that the ball contact position can be freely adjusted by adjusting the amount of bending. Therefore, the outer diameter of the cage can be reduced, and the penetration of the lubricating oil is improved. Accordingly, the outer diameters of the flange portions 24a and 24b of the inner ring 21 that come into contact with the cage end surface can be reduced. By increasing the gap T ′ between the housing 29 and the flange outer diameter, the penetrability of the lubricating oil can be improved. Improve dramatically.
In addition, you may use both an inner ring | wheel and an outer ring | wheel as a bearing ring.

<Third Embodiment>
The slide type radial rolling bearing of this embodiment is an improvement of the conventional sliding type radial rolling bearing 100 shown in FIGS. 9 to 11, and the same reference numerals are given to the same or similar components as those in FIGS. The description is omitted.
As shown in FIG. 7, the slide type radial rolling bearing 30 of the present embodiment is provided with through holes 36 a penetrating in the axial direction in the column parts 6, 6, and the pair of rim parts 5, 5 have column parts. Communication holes 35 a and 35 a communicating with the through holes 36 a provided in 6 are provided. The through hole 36a and the communication holes 35a and 35a constitute an oil passage. Thereby, the penetrability of the lubricating oil in the bearing 30 is good, and the resistance when the shaft 8 is moved can be reduced. That is, when the shaft 8 is moved, even when the lubricating oil accumulated in the back of the housing 9 is compressed by the movement of the shaft 8, the lubricating oil can escape to the opposite side through the oil passage.

Next, an embodiment of the slide type radial rolling bearing according to the present invention will be described.
The sliding radial rolling bearing shown in FIGS. 1 to 3 of the first embodiment of the present invention is used as an example, and the conventional sliding radial rolling bearing shown in FIGS. The resistance value was measured when the shaft and cage pushed oil (gear oil) when swung in the axial direction. The slide type radial rolling bearings of the example and the comparative example were of the same specification except that the shape of the cage and the inner diameter of the flange portion of the outer ring were different. The measurement results are shown in FIG. In the figure, the vertical axis represents the resistance value (N).

As apparent from FIG. 8, the sliding radial rolling bearing of the example showed a resistance value of half or less compared to the comparative example.
Thereby, according to the slide type radial rolling bearing of this embodiment, it turned out that the penetration of lubricating oil improves and the resistance at the time of a shaft movement becomes small.

  In addition, this invention is not limited to embodiment mentioned above, A deformation | transformation, improvement, etc. are possible suitably. In addition, the material, shape, dimension, numerical value, form, number, arrangement location, and the like of each component in the above-described embodiment are arbitrary and are not limited as long as the present invention can be achieved. For example, although balls are illustrated as rolling elements, rollers may be used, and the number of rolling elements held in each pocket is not limited to four.

10, 20 Slide type radial rolling bearing 11 Outer ring 12, 22 Cage 13, 23 Ball (rolling element)
14a, 14b, 24a, 24b Ridge part 15, 25 Rim part 16, 26 Column part 16a, 26a Column body 16b, 26b Bending part 17, 27 Pocket 21 Inner ring 50, 51 Through groove (oil passage)
35a Communication hole (oil passage)
36a Through hole (oil passage)

Claims (3)

A cylindrical outer ring, a cylindrical cage disposed on the inner diameter side of the outer ring, and a plurality of rolling elements held by the cage so as to roll freely,
The outer ring is provided with inward flanges at both axial ends,
The retainer has a plurality of pillar portions arranged in parallel with each other at equal intervals in a circumferential direction between a pair of rim portions that are annular and are concentrically arranged with each other. The portions formed by the column portions adjacent to each other in the circumferential direction are pockets, and the interval between the outer surfaces of the two rim portions is smaller than the interval between the inner surfaces of the both flange portions,
In each of the pockets, a plurality of rolling elements are disposed, and the cage is axially movable between the both flange portions of the outer ring , and in a slide-type radial rolling bearing capable of rotating ,
Sliding radial rolling bearing, characterized in that said retainer has only set an oil passage for reducing the hydraulic resistance during axial movement to the pillar portion. A cylindrical inner ring; a cylindrical cage disposed on the outer diameter side of the inner ring; and a plurality of rolling elements held by the cage so as to be freely rollable.
The inner ring is provided with outward flanges at both axial ends,
The retainer has a plurality of pillar portions arranged in parallel with each other at equal intervals in a circumferential direction between a pair of rim portions that are annular and are concentrically arranged with each other. The portions formed by the column portions adjacent to each other in the circumferential direction are pockets, and the interval between the outer surfaces of the two rim portions is smaller than the interval between the inner surfaces of the both flange portions,
In each of the pockets, a plurality of the rolling elements are disposed, and the cage is axially movable between the both flange portions of the inner ring , and in a slide-type radial rolling bearing capable of rotating ,
Sliding radial rolling bearing, characterized in that said retainer has only set an oil passage for reducing the hydraulic resistance during axial movement to the pillar portion.   3. The sliding radial rolling bearing according to claim 1, wherein the oil passage is a through groove formed between bent portions in which both end portions in the circumferential direction of the column portion are bent in a radial direction.

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