JP2013190006A - Retainer for roller bearing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce a drop amount of a roller while reducing a load necessary for click-fitting a roller into a pocket.SOLUTION: A retainer is used for holding a plurality of rollers 3 arranged between inner and outer bearing rings, and includes two annular parts, columnar parts 4b and pockets 4a, in which the columnar part 4b includes a roller drop-stopping part 4c protruding toward the pocket 4a and preventing a roller 3 accommodated in the pocket 4a from slipping and dropping to the inside or the outside in a radial direction, The roller drop-stopping part 4c is formed, in each pocket 4a, on only one column 4b of the columns 4b, 4b at both sides interposing the pocket 4a, in such a manner that a roller support point 4e as a contact point between the roller 3 and the other column part 4b is located at a farther side than a roller drop-stopping point 4f as a contact point of the roller 3 and the roller drop stopping part 4c of the one column part 4b in a click-fitting direction of the roller 3 with respect to the radial direction of the retainer.

Description

  The present invention relates to a roller bearing retainer in which a pocket for accommodating a roller is formed by two annular portions and a plurality of column portions connecting them.

  In roller bearings incorporated in various industrial machines such as transportation equipment, rolling elements and cages are incorporated into either one of the inner and outer rings, and one of the bearing rings is used as a rolling element or holder. There are types that are assembled together with the housing and the shaft member. At this time, the other race ring is incorporated later by press fitting or the like.

  A cage used for this type of roller bearing is generally provided with two annular portions, a plurality of column portions connecting the annular portions, and a pocket formed between the column portions.

  The cage and the roller held thereby are integrated into one of the race rings without the other race ring. For this reason, there is a problem that the roller assembled on one side of the bearing ring falls from the cage pocket to the inside or outside in the radial direction, and the other bearing ring cannot be smoothly assembled later.

  For this reason, in order to incorporate the other raceway smoothly later, it is necessary not only to prevent the rollers from falling off but also to regulate the amount of the rollers falling.

  For example, in a cylindrical roller bearing used for a bearing portion of an aircraft jet engine, in order to improve the ease of incorporation into an actual machine, the amount of roller drop, that is, as shown in FIG. C. D. In many cases, the roller drop amount H is defined from (corresponding to the diameter R1 in the figure).

  Also, as a conventional technique, in order to reduce the roller drop amount H, a method of forming a roller drop-preventing portion by projecting a nail formed by cutting integrally with a cage pillar to the pocket side by bending. (For example, refer to Patent Document 1). In addition, there is a method in which another member for preventing a roller drop is attached to the cage (see, for example, Patent Document 2).

Japanese Utility Model Publication No. 5-12753 JP 2008-151171 A

  As in the invention described in Patent Document 1, the method of bending the claws provided on the cage can reduce the roller drop amount H. However, since a great number of man-hours are required to mold the cage, and the accompanying inspection is required, there is a problem that the manufacturing process becomes complicated.

  In addition, as in the invention described in Patent Document 2, the method of attaching another member for preventing the roller drop to the cage has a problem that the number of parts of the cage increases and the reliability decreases. .

  By the way, in general, in the machined cage, as shown in FIG. 7A, the distance L between the roller drop-preventing portions 4c, 4c between the column portions 4b, 4b adjacent to each other in the circumferential direction of the cage 4 is set as a roller. 3 is slightly smaller than the diameter R2 of the roller 3, the roller 3 is forcibly pushed into the cage 4, and the roller drop-preventing portion 4c provided at the tip of the column portion 4b is elastically deformed, whereby the roller 3 is incorporated into the pocket 4a. Yes. This forced pushing is generally referred to as “clicking”.

Due to the structure of the machined cage, the roller drop amount H affects the difference between the distance L between the roller drop-preventing portions 4c and 4c and the diameter R2 of the roller 3 (hereinafter referred to as “pinch amount δ”). That is, as the chain line from the solid line shown in FIG. 7 (a), the roller falls stopper portion 4c, when designed with close between 4c, roller fall stopper portion 4c, the distance L between 4c, from _{L A} to _{L B} to shrink.
As a result of this reduction, the amount of engagement δ becomes relatively large, and the contact point between the roller 3 and the stopper 4c is shifted from the point A to the point B shown in FIG. Move toward the center of the pocket 4a with respect to the circumferential direction of the container 4). Therefore, a roller falling amount H, it is possible to reduce the _{H A} shown in FIG. 7 (a) to _{H B.} Reference numerals Pa and Pb in the figure indicate the center points of the rollers 3 positioned on the central axis d, respectively, and reference numeral Pc indicates the central axis d and the design bearing P.P. C. D. Is the intersection of

  However, if the roller drop amount H is reduced by reducing the distance L between the roller drop stoppers 4c and 4c as described above, the biting amount δ increases conversely. The increase in the amount of engagement δ increases the load required for the engagement, which reduces the efficiency of the bearing assembly work and may damage the raceway surface of the roller.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to reduce the amount of roller drop while reducing the load required to carry the roller into the pocket.

  In order to solve the above-described problems, the present invention is used to hold a plurality of rollers arranged between inner and outer raceways, and includes two annular portions arranged in parallel in the axial direction and a space between the annular portions. A plurality of column portions to be connected and pockets formed between the column portions adjacent to each other in the circumferential direction; the column portions project toward the pocket side and are radially inward or outward of the rollers stored in the pockets; In a roller bearing retainer provided with a roller drop-preventing portion that prevents the falling-off of the roller, the roller drop-preventing portion is provided only on one of the pillars on both sides sandwiching the pocket with respect to each pocket. The roller support point, which is the contact point between the roller and the other column part, is more in the radial direction than the roller fall point, which is the contact point between the roller and the roller drop prevention part of the one column part. Against the back side of the roller Employing the cage for a roller bearing, characterized in that it has to be located.

In this configuration, the roller support point of the other column part and the roller stopper point of one column part are asymmetric with respect to the central axis in the circumferential direction of the pocket (center axis with respect to the circumferential direction of the bearing) The roller support point of this column part is positioned further to the back side in the direction of biting than the roller drop prevention point of one column part.
That is, when the roller is pushed in from the inner diameter side to the outer diameter side, the roller support point of the other column part is set to the outer diameter side from the roller drop prevention point of the one column part, and the roller is changed from the outer diameter side to the inner diameter side. In the case of pushing in, the roller support point of the other column part is positioned closer to the inner diameter side than the roller drop prevention point of one column part.

In this way, by positioning the roller support point on the other column side closer to the inner side in the direction of engagement than the roller drop prevention point on one column side, the pockets that affect the roller engagement The distance between the roller stoppers that affects the roller drop amount can be reduced with respect to the size of the opening portion, that is, the two-point dimension connecting the roller support point and the stopper point with the shortest distance.
For this reason, compared with the cage | basket which has a symmetrical pocket like the past, roller fall amount can be made small, without enlarging the amount of biting. Therefore, it is possible to reduce the roller drop amount and improve the assemblability of the bearing without increasing the load required to carry the roller into the pocket.

  In the state where the roller is completely pushed in, the roller is supported by the pocket surface or roller support point on the other column portion side without the roller drop prevention portion and the roller drop prevention portion on the one column portion side, and Become.

In this configuration, the other column portion includes an introduction portion on the near side in the direction of the insertion with respect to the roller support point, and the roller insertion that connects the pocket side inner surface of the introduction portion and the roller drop-off point with the shortest distance is provided. A configuration in which the size of the mouth is larger than the diameter of the roller can be adopted.
Thus, if the roller insertion opening dimension is larger than the diameter of the roller, it is possible to make it difficult for the outer peripheral surface of the roller to touch the other pillar portion of the cage before touching the roller support point and the drop-off point.

At this time, it is desirable that the other column part includes a rounded part that connects the roller support point and the roller introduction part in a concave shape toward the back side in the direction of the engagement.
According to this configuration, the outer peripheral surface of the roller can be made more difficult to touch the other pillar portion of the cage before touching the roller support point and the drop-off point.

  In each of these configurations, the one column portion is a roller pressing portion in which the roller and the one column portion are in contact with each other before the roller is inserted, on the near side in the engagement direction with respect to the roller drop-off point. The contact point between the roller and the one pillar portion is moved from the roller pressing portion to the roller drop-off point when the roller is inserted, and the one pillar portion has the contact point. It is possible to employ a configuration in which a chamfer that gradually expands toward the front side in the direction of the insertion is provided at the end on the front side in the direction of the insertion of the roller stopper.

  In this way, by providing the chamfer on the near side of the roller drop-preventing portion of the one column portion, the distance that the roller contacts the roller drop-preventing portion can be reduced. That is, when the roller is pushed in, the moving distance of the contact point between the roller and one of the pillars can be shortened. Thereby, damage to the raceway surface of a roller can be prevented more reliably. In addition, the deformation | transformation of the roller fall-off prevention part accompanying the movement of the said contact point at the time of biting is in an elastic deformation area | region.

  In each of these configurations, it is possible to employ a configuration in which a notch is provided in the roller retaining portion of the one column portion to enhance the deformation performance of the one column portion when the roller is inserted. By providing this notch, the material of the roller stopper part is easily elastically deformed, and the biting load can be reduced. Moreover, damage to the raceway surface of the roller can be prevented.

  In each of these configurations, it is preferable that the annular portion and the column portion constituting the retainer are constituted by integrally molded members. Although it is possible to configure the cage with multiple parts, the number of parts can be reduced by manufacturing them in one piece, which increases the reliability during use compared to using separate members. it can.

  Moreover, in each of these structures, the said annular part and the said pillar part which comprise the holder | retainer can be comprised with a metal material. When the cage is made of metal, a so-called machined cage can be adopted. Furthermore, it is desirable to employ a structure in which the surface of the annular portion and the column portion constituting the cage is subjected to a plating treatment, in particular, a silver plating treatment in a configuration used for an aircraft bearing.

A roller bearing retainer composed of these metal materials is used, and the material of the inner and outer rings is M50 or M50NiL, and a cylindrical roller bearing used for a bearing portion of an aircraft jet engine can be employed. Similarly, it is possible to use a roller bearing retainer made of these metal materials, the roller material is M50 or ceramics, and a cylindrical roller bearing used for a bearing portion of an aircraft jet engine. it can.
In aircraft jet engine bearings, the amount of roller drop is often specified, and materials for inner and outer rings and / or rollers are specified as the above-mentioned materials, and if necessary, they are placed on the cage surface. It is desirable to have a structure that has been subjected to silver plating.

This invention makes the roller support point of the other column part and the roller drop-off point of one column part asymmetric with respect to the center axis in the circumferential direction of the pocket (center axis with respect to the circumferential direction of the bearing) The roller support point of this column part is located on the back side in the direction of engagement than the roller drop prevention point of one of the column parts, so the roller insertion opening dimension of the pocket that affects the roller engagement The distance between the roller stoppers can be reduced.
For this reason, compared with the cage | basket which has a symmetrical pocket like the past, roller fall amount can be made small, without enlarging the amount of biting. Therefore, it is possible to reduce the roller drop amount and improve the assemblability of the bearing without increasing the load required to carry the roller into the pocket.

Front view showing an embodiment of the present invention The operation of the embodiment is shown, (a) is an enlarged view of each main part before biting, (b) at the time of biting, and (c) after the biting. (A) is the principal part enlarged view of the pocket part of a cage | basket, (b) is the principal part enlarged view of the pocket part of a prior art example. (A) is a principal part enlarged view showing the positional relationship with the roller drop prevention part, (b) is a principal part enlarged view showing a modification example of the roller drop prevention part, (c) is a further modification example of the roller drop prevention part. Enlarged view of the main part showing (A) is an enlarged view of the main part showing the positional relationship with the roller stopper part, (b) is an explanatory diagram of the roller stopper height. Main part enlarged view of the conventional example (A) (b) is the principal part enlarged view of a prior art example.

  An embodiment of the present invention will be described with reference to the drawings. In this embodiment, a cylindrical roller bearing used for a bearing portion of an aircraft jet engine will be described as an example, and a configuration of the cylindrical roller bearing and a cage used therefor will be described. The present invention can also be applied to bearing parts for various uses other than the bearing part of an aircraft jet engine, in which the roller drop prevention amount should be regulated to a certain amount.

The cage 4 used for this cylindrical roller bearing is used for holding a plurality of rollers 3 arranged between inner and outer raceways (not shown).
As shown in FIGS. 1 and 2, the configuration includes two annular portions arranged in parallel in the axial direction, a plurality of column portions 4b connecting the annular portions, and column portions 4b and 4b adjacent in the circumferential direction. And a pocket 4a formed.

  In this embodiment, the cage 4 employs a machined cage integrally formed of a metal material. Corresponding to being used for aircraft bearings, M50 or M50NiL is used as the material for the inner and outer rings, and the entire surface of the cage 4 is subjected to silver plating. Furthermore, the material of the roller 3 is M50 or ceramics. However, these materials, the type of surface treatment, and the presence / absence thereof can be appropriately selected according to the specifications and application of the bearing.

  With respect to the rollers 3 accommodated in the pockets 4a, one of the pillar portions 4b, 4b on both sides sandwiching the pocket 4a protrudes toward the roller 3 accommodated in the corresponding pocket 4a, A roller drop-preventing portion 4c is provided for preventing the roller 3 housed in the pocket 4a from falling out inward or outward in the radial direction of the cage 4 (bearing). That is, as shown in FIG. 2 (a), with respect to one roller 3 accommodated in the pocket 4a, only the right column portion (one column portion) 4b among the column portions 4b and 4b on both sides is rolled. A stopper 4c is provided.

  In this embodiment, the roller 3 is configured to be squeezed from the inner diameter side to the outer diameter side with respect to the pocket 4a of the cage 4, so that the roller fall-preventing portion 4c prevents the roller 3 from falling off inward in the radial direction. It is the composition to do. The outer ring is assembled together with the roller 3 and the cage 4 in the housing first, and the inner ring is assembled later by press fitting or the like.

  The left column portion (the other column portion) 4b is provided with a roller drop-preventing portion 4c corresponding to another pocket 4a adjacent in the circumferential direction. For the roller 3 shown in the figure, The other pillar part 4b is not provided with the roller drop prevention part 4c. Such a pillar part 4b and the other pillar part 4b correspond to the respective pockets 4a.

  As shown in FIG. 2A, the one pillar portion 4b has a shape in which the circumferential width (width in the circumferential direction of the cage) is gradually narrowed toward the tip. That is, by gradually narrowing the tip of one column part 4b toward the front side of the roller 3 in the direction of engagement, the roller drop prevention portion 4c that is easily elastically deformed at the time of engagement is configured. The roller drop prevention part 4c includes a roller drop prevention point 4f and a roller pressing part 4g in order from the outer diameter side to the inner diameter side on the corresponding roller 3 side surface.

  In addition, the other pillar portion 4b has a roller contact point 4m, a roller support point 4e, and a roller introduction in order from the outer diameter side to the inner diameter side roller drop prevention portion 4c on the corresponding pocket surface 4h on the roller 3 side. Part 4j is provided. That is, the other column part 4b is provided with the roller introduction part 4j on the inner diameter side (front side in the biting direction) with respect to the roller support point 4e.

  The following describes how the roller 3 is inserted into the pocket 4a.

First, the state of “before biting” into the pocket 4a of the roller 3 will be described.
As shown in FIG. 2A, the roller 3 is placed on the roller insertion opening of the pocket 4a. At this time, the roller insertion opening dimension L1 that connects the roller 3 side edge of the roller introduction portion 4j and the roller drop stop point 4f of the roller drop stop portion 4c at the shortest distance is set to be larger than the diameter R2 of the roller 3. Has been.

  Thus, since the roller insertion opening dimension L1 is set to be larger than the diameter R2 of the roller 3, before the roller 3 is pushed in, particularly the raceway surface of the roller 3 has a roller support point 4e and a roller pressing portion 4g. Before the roller contact point 4f is touched, the other pillar portion 4b of the cage 4 is hardly touched.

  Further, the other column portion 4b includes a rounded portion 4d that is connected to the roller support point 4e and the introduction portion 4j in a concave shape toward the outer diameter side (the inner side in the direction of biting). The rounded portion 4d has a shape that does not interfere with the rollers 3 in all the steps of feeding. Similarly, the raceway portion 4d makes it difficult for the raceway surface of the roller 3 to touch the other pillar portion 4b.

Next, the state of “when biting” into the pocket 4a of the roller 3 will be described.
As shown in FIG. 3 (a), the diameter R2 of the roller 3 is larger than the distance L2 that connects the roller support point 4e and the pressing portion 4g at the shortest distance (the size of the mouth portion), so FIG. The roller 3 is pushed into the pocket 4a so that a load is applied to the roller 3 in the direction indicated by the arrow X and the roller pressing portion 4g is pushed outward in the direction indicated by the arrow Y.

  At this time, as shown in FIG. 2 (b), on one column portion 4b side, the contact point between the roller 3 and the one column portion 4b is slidably contacted from the roller pressing portion 4g to the roller dropping stop point 4f. Move (see arrow Z in FIG. 4A). On the other column 4b side, the roller 3 continues to be in contact with the roller support point 4e to some extent.

  The positional relationship between the roller support point 4e on the other column part 4b side and the roller drop stop point 4f of the roller drop stop part 4c on the one column part 4b side is such that the roller support point 4e is outside the roller drop stop point 4f. Located on the radial side. That is, with respect to the center axis (center axis with respect to the circumferential direction of the bearing) d in the circumferential direction of the pocket 4a, the roller support point 4e of the other column part 4b and the roller fall-off point 4f of the one column part 4b The roller support point 4e of the other column part 4b is positioned on the inner side of the roller 3 with respect to the radial direction of the retainer 4 with respect to the radial direction of the retainer 4 relative to the roller drop stop point 4f of the other column part 4b. I am doing so.

For this reason, it is possible to reduce the distance L between the roller stoppers that affects the roller drop amount with respect to the pocket portion dimension L2 of the pocket 4a that affects the roller 3. As shown in FIG. 3A, the distance L between the roller stoppers is a distance between the roller support point 4e and the pressing portion 4g in the direction orthogonal to the central axis d.
That is, compared to the cage 4 having the conventional symmetrical pocket 4a as shown in FIG. 3B, the amount of biting δ (a value twice as large as δ / 2 shown in FIG. 4A). The roller drop amount H can be reduced without increasing the equivalent). Therefore, the roller drop amount H can be reduced without increasing the load required for the roller 3 to be inserted into the pocket 4a, and the assemblability of the bearing can be improved.

  That is, in the conventional cage (milled cage) 4 shown in FIG. 3B, the distance L between the roller drop stoppers and the bite portion opening dimension L2 are the same. On the other hand, in the cage 4 of the present invention shown in FIG. 3 (a), the opening portion dimension L2 is larger than the distance L between the roller stoppers.

Lastly, the state after “inserting” into the pocket 4a of the roller 3 will be described.
As shown in FIG. 2 (c), in a state where the roller 3 is completely pushed in, the elastically deformed roller fall-preventing portion 4c returns to the original position, and the roller 3 is the other side without the roller fall-preventing portion 4c. This is in a state of being supported by the pocket surface 4h or the roller support point 4e on the side of the column part 4b and the roller drop prevention part 4c on the side of the one column part 4b.

  The roller drop amount H will be described with reference to FIG.

Size H _D in FIG. 5, the roller falls in height, dimension H _C is a roller falling stopper height represented by distance to the center axis Karakoro drop stop point 4f of the cage 4 (height) . If it is identical to the roller supporting point 4e Gakoro contact point 4m, size H _D is expressed by the following equation.
(Roller drop height H _D ) ² = (Clip portion opening dimension L2) ² − (Distance L between roller drop stoppers) ²

Also, the amount of rolling-off H _B is
Roller drop amount H _B = (Bearing PCD / 2) − Roller drop height H _D − Roller drop prevention height H _C
It is.

Here, the cage 4 of this embodiment and the conventional cage 4 to be compared are connected to the bearing P.P. C. D. And rollers fell stopping the height H _C With the same conditions, obtaining a difference between the roller falling amount H _B of both the cage 4.

In a general conventional machined cage 4, the roller drop height _HD is calculated by the following equation.
(Roller drop height H _D ) ² = (Roller diameter R2 / 2) ^2- (Distance L between roller stoppers) ²
In a general conventional machined cage 4, the distance L between the stoppers is the same as the opening portion dimension L <b> 2.

Here, assuming that the load required for biting is the same, the distance L between the biting portion mouth dimension L2 in the cage 4 of this embodiment and the roller drop stopper of a general conventional machined cage 4 (= since the write unit mouth dimension L2) and has to be the same, the difference γ of the roller falling amount H _B, is expressed by the following equation.
Rolling drop amount H _B difference γ
= {(Clip portion opening dimension L2) ² − (Distance L between roller stoppers) ² } ^1/2
-{(Roller diameter R2 / 2) ^2- (Clip portion opening dimension L2 / 2) ² } ^1/2

Thus, the roller falls amount H _B in the cage 4 of this embodiment differs from the roller falls amount H _B of generally conventional machined cage 4, only difference γ of the time falling amount H _B becomes smaller.

  Another embodiment is shown in FIG. In this embodiment, a chamfer 4k that gradually expands toward the inner diameter side (front side in the squeezing direction) is provided at the inner diameter side (front side in the squeezing direction) of the roller drop-preventing part 4c of one columnar part 4b. It is a configuration.

In this manner, by providing the chamfer 4k on the front side of the portion where the roller 3 and the roller drop-preventing portion 4c of the one pillar portion 4b come into contact, the roller pressing portion 4g approaches the roller drop-preventing point 4f. As a result, it is possible to reduce the distance that the roller 3 comes into contact with the roller stopper 4c. That is, when the roller 3 is pushed in, the moving distance of the contact point between the roller 3 and the one pillar portion 4b can be shortened.
Thereby, damage to the raceway surface of roller 3 can be prevented more reliably. In addition, the deformation | transformation of the roller fall-preventing part 4c accompanying the movement of the contact point at the time of biting is in the elastic deformation region.

Yet another embodiment is shown in FIG. In this embodiment, a notch 4i is provided in the roller drop-preventing portion 4c of the one column portion 4b to enhance the deformation performance of the one column portion 4b when the roller 3 is inserted. By providing this notch 4i, the material of the roller drop-preventing portion 4c is easily elastically deformed, and the necessary jamming load can be reduced. Moreover, damage to the raceway surface of the roller 3 can be prevented.
In addition, the notch 4i can be made into the shape extended from an inner diameter side (front side in the biting direction) to an outer diameter side (back side in the biting direction), for example, as in this embodiment. Alternatively, it may be configured to extend in the circumferential direction of the cage 4. However, it is desirable that the position of the notch 4 i avoid a contact point with the roller 3.

  In these embodiments, the roller 3 is configured to be squeezed from the inner diameter side to the outer diameter side with respect to the pocket 4 a of the retainer 4, so that the roller fall-preventing portion 4 c prevents the roller 3 from falling out inward in the radial direction. Although it is the structure which blocks | prevents, the structure which has arrange | positioned this inside and outside reversely can also be employ | adopted. That is, when the roller 3 is configured to be squeezed from the outer diameter side to the inner diameter side with respect to the pocket 4a of the retainer 4, the roller drop-preventing portion 4c prevents the roller 3 from falling off radially outward. It becomes composition. At this time, the inner ring is assembled first to the shaft member together with the roller 3 and the cage 4, and the outer ring is incorporated later by press fitting or the like.

3 Roller 4 Cage 4a Pocket 4b Pillar part 4c Roller retaining part 4d Round part 4e Roller support point 4f Roller retaining point 4g Roller pressing part 4h Pocket surface 4i Notch 4j Introduction part 4k Chamfer 4m Roller contact part

Claims (10)

Used to hold a plurality of rollers (3) arranged between the inner and outer raceways, and two annular portions arranged in parallel in the axial direction, and a plurality of column portions (4b) connecting the annular portions; A pocket (4a) formed between the column portions (4b, 4b) adjacent to each other in the circumferential direction, and protrudes toward the pocket (4a) in the column portion (4b) and is stored in the pocket (4a). A roller bearing retainer provided with a roller stopper (4c) that prevents the roller (3) from falling out radially inward or outward;
The roller drop-preventing portion (4c) is provided only on one column portion (4b) of the column portions (4b, 4b) on both sides sandwiching the pocket (4a) with respect to each pocket (4a), A roller support point (4e), which is a contact point between the roller (3) and the other column portion (4b), is the roller drop prevention portion (4c) of the roller (3) and the one column portion (4b). The roller bearing retainer is characterized in that it is located on the inner side of the roller (3) with respect to the radial direction with respect to the roller drop-off stop point (4f) which is a contact point with the roller.   The other column portion (4b) includes an introduction portion (4j) on the near side in the direction of the insertion with respect to the roller support point (4e), and the pocket (4c) side inner surface of the introduction portion (4j) and the roller. 2. The roller bearing retainer according to claim 1, wherein a roller insertion opening dimension (L 1) connecting the stopper point (4 f) with the shortest distance is larger than a diameter (R 2) of the roller (3).   The other pillar portion (4b) includes a rounded portion (4d) that connects the roller support point (4e) and the roller introduction portion (4j) in a concave shape toward the back side in the squeezing direction. The roller bearing retainer according to claim 2, wherein the roller bearing retainer is provided.   The one column portion (4b) is positioned closer to the front side of the roller dropping point (4f) than the roller dropping point (4f), and the roller (3) and the one column portion before the roller (3) is inserted. 4b) is provided with a roller pressing portion (4g) that contacts the roller (3), and when the roller (3) is pushed in, the contact point between the roller (3) and the one column portion (4b) is the roller pressing portion ( 4g) to the roller drop-off point (4f), and the end of the roller drop-off portion (4c) of the one pillar portion (4b) on the near side in the holding direction is The roller bearing retainer according to any one of claims 1 to 3, further comprising a chamfer (4k) that gradually expands toward the front side in the squeezing direction.   The roller retaining portion (4c) of the one column portion (4b) is provided with a notch (4i) that enhances the deformation performance of the one column portion (4b) when the roller (3) is pushed in. The roller bearing retainer according to any one of claims 1 to 4, wherein the retainer is a roller bearing retainer.   The roller bearing retainer according to any one of claims 1 to 5, wherein the annular portion and the column portion (4b) are formed of an integrally molded member.   The roller bearing retainer according to any one of claims 1 to 6, wherein the annular portion and the column portion (4b) are made of a metal material.   The roller bearing retainer according to claim 7, wherein a surface of the annular portion and the column portion (4b) is subjected to silver plating.   A cylindrical roller bearing using the roller bearing retainer according to claim 7 or 8, wherein the material of the inner and outer rings is M50 or M50NiL, and is used for a bearing portion of an aircraft jet engine.   A cylindrical roller bearing using the roller bearing retainer according to claim 7 or 8, wherein the roller (3) is made of M50 or ceramics and used for a bearing portion of an aircraft jet engine.

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