JP5773700B2 - Bearing lubricator - Google Patents

Description

  The present invention relates to a bearing lubrication device for supplying a lubricant to an outer ring such as a cam follower.

2. Description of the Related Art Conventionally, a lubrication device for a bearing in which a casing holding a lubrication supply member impregnated with a lubricant is provided on the outer side of the outer ring in order to supply the lubricant to the outer peripheral surface of the outer ring which is rotatable on a support shaft. .
For example, the bearing lubrication device disclosed in Patent Document 1 includes a shaft hole that allows a support shaft of an outer ring to pass through a casing that houses the lubrication supply member. Then, the outer ring and the casing are integrally fixed by passing the support shaft through the shaft hole and attaching the support shaft to the fixing member.

Japanese Patent Application No. 2009-212467 filed earlier is an improvement of the apparatus shown in Patent Document 1, and is shown in FIG.
In the body 2 of the casing 1 of the lubrication apparatus A shown in FIG. 7, a leaf spring 5 that presses the lubrication supply member 4 toward the outer ring 6 side of the follower bearing B together with a lubrication supply member 4 impregnated with a lubricant. Incorporated.
As shown in FIG. 7, the follower bearing B using the lubricating device A is provided with an outer ring 6 rotatably around the support shaft 7, and a screw portion 7 a is provided at one end of the support shaft 7. The portion 7a is projected outward in the axial direction of the outer ring 6. The axial direction of the outer ring 6 is the axial direction of the rotation center of the outer ring 6.
Such a follower bearing B supports a mating rolling surface M which is a rolling surface of the outer ring 6 as shown in FIG.

Then, as shown in FIG. 8, when one end of the support shaft 7 is passed through the through hole 8 a of the fixing member 8 and the nut 9 is screwed and fixed to the threaded portion 7 a of the support shaft 7 passed through, the follower bearing B The outer ring 6 is in rolling contact with the mating rolling surface M, and the fixing member 8 and the mating rolling surface M move relative to each other.
Further, as shown in FIG. 7, a hexagonal hole 10 is used to prevent co-rotation when the nut 9 is tightened to the threaded portion 7a when the follower bearing B is fixed. A follower bearing B is fixed by inserting a hexagon wrench (not shown) and tightened with a nut 9.

As shown in FIG. 7, side surfaces 13 and 13 are formed on both sides of the bottom surface 12 in the casing 1, and retaining steps 14 and 14 are formed on the side surfaces 13 and 13, respectively.
Further, the lubrication supply member 4 incorporated in the casing 1 is formed of a porous structure sintered resin member made of open pores, and the porosity thereof can be 40 to 50%, for example. It is impregnated with lubricating oil such as oil. The lubrication supply member 4 may be a solid lubricant that is solidified after heating by mixing a thermoplastic resin powder such as polyethylene or polypropylene and a lubricant composed of lubricating oil or grease.

  When the lubrication supply member 4 is assembled in the casing 1, a pair of protrusions 15, 15 having a predetermined distance are provided on the concave surface facing the outer ring 6 in parallel with the axis of rotation of the outer ring 6. While providing, these protrusions 15 and 15 are made to contact the outer peripheral surface of the outer ring | wheel 6, but those contact surfaces are made into the cylindrical surface. By making the cylindrical surfaces of the projections 15, 15 in this way contact the outer peripheral surface of the outer ring 6, a lubricant is applied to the outer peripheral surface of the outer ring 6, and at this time, the lubricant adhered to the outer peripheral surface of the outer ring 6. Thus, the counterpart rolling surface M (see FIG. 8) can be lubricated simultaneously.

Further, the lubrication supply member 4 has recesses 16 and 16 formed on the surface opposite to the recesses on which the protrusions 15 and 15 are formed, and is incorporated in the casing 1 outside the recesses 16 and 16. In order to prevent the lubrication supply member 4 from falling off, the latching protrusions 17 and 17 that are hooked on the retaining stepped parts 14 and 14 are formed.
The lubrication supply member 4 as described above is incorporated in the casing 1 with a leaf spring 5 interposed between the bottom surface 12 and the leaf spring 5 having a cross-sectional shape of a mountain and a pair of projecting pieces at both ends. 5 b and 5 b, and the top portion 5 a is configured to coincide with the positioning recess 18 formed in the bottom surface 12 of the casing 1.

When the lubrication supply member 4 is incorporated into the casing 1, the lubrication supply member 4 is provided between the projecting pieces 5b, 5b formed on the leaf spring 5, and the leaf spring 5 and the lubrication supply member 4 are handled as a unit. In the casing 1, the latching protrusions 17 and 17 of the lubrication supply member 4 are pushed so as to be closer to the bottom surface 12 than the retaining stepped portions 14 and 14 formed in the casing 1.
As described above, in order to attach the support shaft to the shaft hole of the casing and fix the shaft to the existing bearing, the lubrication apparatus has to remove the support shaft from the fixing member. Therefore, even if a problem occurs in the lubrication device once attached, the lubrication device cannot be removed unless the support shaft of the outer ring is removed.

As a means for solving the above problem, a bearing lubrication device of Patent Document 2 in which the support shaft is not penetrated through a casing is known.
As such, the casing 1 of the lubricating device C shown in FIG. 9 is obtained by integrally molding the main body 2 and the fixing portion 3.

The casing 1 that holds the lubrication supply member 4 for lubricating the outer ring 6 has a fixed portion 3 formed on the outer periphery of the main body 2. The fixed portion 3 has a through hole 3 a. The screw member 11 is inserted into the through-hole 3a, and the lubricating device C is screwed and fixed to the fixing member 8. The fixing member 8 is provided with a fixing screw hole 8b formed with a female screw, and the fixing screw hole 8b. The screw member 11 is inserted into and fixed with screws.
As shown in FIG. 9, the lubricating device C configured in this way is fixed to a fixing member 8 to which the support shaft 7 of the outer ring 6 is fixed via the fixing portion 3 of the casing 1 separately from the support shaft 7. . Therefore, the lubricating device C can be attached later to the follower bearing B already fixed to the fixing member 8.

Japanese Patent No. 4278659 Japanese Patent Laid-Open No. 09-089078

  As shown in FIG. 9, the lubricating device C is fixed to the fixing member 8 separately from the support shaft 7 of the outer ring 6. That is, the support shaft 7 of the follower bearing B is fixed by being inserted into the through hole 8 a of the fixing member 8. Separately, the fixing portion 3 of the casing 1 of the lubricating device C is fixed to the fixing screw hole 8 b by the screw member 11. It is fixed to.

As described above, when the follower bearing B and the bearing lubrication device C are separately fixed to the fixing member 8, the protrusion 15 of the lubrication supply member 4 is brought into uniform contact with the outer peripheral surface of the outer ring 6. Requires the following relationship: That is, the axis L0 that is the rotation center of the outer ring 6 and the axis L1 that passes through the center of the through hole 8a provided in the fixing member 8 and the through hole 3a of the fixing portion 3 on the lubrication supply member 4 side have a predetermined relationship. It is necessary to maintain the contact surface between the protrusion 15 of the lubrication supply member 4 and the outer ring 6 and the axis L0 in parallel. In order to maintain such a parallel relationship between the outer ring 6 and the lubricating device C, the axial direction of the axis L1 and the fixing screw hole 8a of the fixing member 8 must be accurately managed.
For that purpose, there is a problem that the dimensional accuracy and the mounting accuracy of the fixing part 3 and the fixing member 8 are required, and the processing cost increases.

On the other hand, when the dimensional accuracy on the fixed member 8 side is poor and the contact surface of the lubrication supply member 4 is not parallel to the support shaft 7 of the follower bearing B, the lubrication supply member 4 is attached to the outer ring 6. The protrusion 15 comes into contact with a bias. For this reason, the lubricant may not be evenly supplied to the outer peripheral surface of the outer ring 6, resulting in poor lubrication or stickiness or running out of the lubricant due to excessive supply of the lubricant.
An object of the present invention is a bearing lubrication device that can be fixed to a fixing means separately from an outer ring to be lubricated, and is biased toward contact of a lubrication supply member with the outer ring without strict dimensional control. It is an object of the present invention to provide a bearing lubrication device that does not cause any problems.

This invention comprises a casing provided on the outside of the relatively rotatably on the support shaft the outer ring is provided in the casing, impregnated with a lubricant and a lubricant supplying member comprising, when fixed to a fixing means the casing In the bearing lubrication apparatus in which the lubrication supply member and the outer ring are in contact with the axis of rotation center of the outer ring and apply the lubricant to the outer peripheral surface of the outer ring, the casing includes the fixing means. It is assumed that a fixing portion for mounting is provided, and a centering mechanism is provided that enables the contact surface of the lubrication supply member to the outer peripheral surface of the outer ring to swing in a direction parallel to the axis of rotation center of the outer ring. And

According to a first aspect of the present invention, the alignment mechanism includes an alignment protrusion formed on a surface facing the lubrication supply member and formed on a surface facing the lubrication supply member, on the inner surface of the casing. And a contact portion provided on the lubrication supply member side in contact with the aligning protrusion, and the lubrication supply member between the inner surface of the casing facing the outer ring and the lubrication supply member. A spring member that presses the outer ring is interposed, and the contact portion that contacts the alignment protrusion is provided on the spring member .

According to a second aspect of the present invention, the alignment mechanism is the lubrication supply member, and is formed on a surface facing the inner surface of the casing, and is a centering protrusion formed of a curved surface protruding toward the casing. A spring member that is configured by a contact portion provided on the casing side that comes into contact with the alignment protrusion, and that presses the lubrication supply member against the outer ring between the outer ring and the inner surface of the casing facing the outer ring. Is provided, and the spring member is provided with the contact portion that contacts the alignment protrusion .

  Since the bearing lubrication device of the present invention includes the aligning mechanism, the contact surface between the lubrication supply member and the outer peripheral surface of the outer ring becomes parallel to the axis of rotation center of the outer ring only by being fixed to the fixing means. Therefore, the uneven application of the lubricant to the outer ring does not occur, the optimum lubrication state can be maintained over a long period of time, and it is not necessary to maintain particularly high dimensional accuracy and mounting accuracy, which increases the manufacturing cost. There is nothing.

In the first invention, the alignment mechanism can be configured by the alignment protrusion formed on the casing, and uneven application of the lubricant can be prevented .
According to the second aspect of the invention, the alignment mechanism can be configured by the alignment protrusion formed on the lubrication supply member, and uneven application of the lubricant can be prevented .

In both the first and second inventions , the pressing force of the lubrication supply member against the outer ring can be further stabilized by the spring member while realizing the alignment of the lubrication supply member with respect to the outer ring.

FIG. 1 is a cross-sectional view of the first embodiment. FIG. 2 is a partially enlarged view of FIG. 3 is a cross-sectional view of the first embodiment taken along line III-III in FIG. FIG. 4 is a cross-sectional view of the second embodiment. FIG. 5 is a cross-sectional view of the second embodiment taken along line VV of FIG. FIG. 6 is an external perspective view of the bearing lubrication device of the present invention. FIG. 7 is a perspective view of a conventional example. FIG. 8 is a cross-sectional view showing a mounting state of the conventional example of FIG. FIG. 9 is a cross-sectional view showing a mounting state of another conventional example.

  The bearing lubrication device D of the first embodiment shown in FIGS. 1 to 3 is provided on the outer ring 6 of the follower bearing B shown in FIG. 7 in the same manner as the conventional bearing lubrication devices A and C shown in FIGS. A device for applying a lubricant. The lubrication apparatus D is characterized in that it includes a centering mechanism that will be described in detail later, but the other configuration is the same as that of the conventional lubrication apparatus A. Therefore, in the description of the first embodiment, the same reference numerals are used for the same components as those of the conventional lubricating device A, and detailed descriptions of the same components as those of the conventional example are omitted.

  A bearing lubrication device D shown in FIG. 1 includes a lubrication supply member 4 impregnated with a lubricant and a leaf spring 5 in a main body 2 of a casing 1, and a fixing portion 3 protruding from the outer periphery of the main body 2. The fixing portion 3 is formed with a pair of through holes 3a and 3a provided with a search 3b. When this bearing lubrication device D is used for the cam follower bearing B, the screw member 11 is inserted into the through holes 3a, 3a, and the screw member 11 is screwed into the fixing member 8 as the fixing means of the present invention. Stop and fix the casing 1. This is the same as the conventional one (see FIG. 9).

However, the lubricating device D according to the first embodiment includes a centering protrusion 19 at the center of the bottom surface 12 of the main body 2 of the casing 1.
As shown in FIG. 3, the alignment protrusion 19 is a protrusion having a curved surface whose axial cross section forms an arc. Further, the alignment protrusion 19 is provided with a positioning recess 18 extending in the axial direction at the center thereof, and the top 5a of the leaf spring 5 is configured to coincide with the positioning recess 18 as in the prior art.

Then, on both sides of the positioning recess 18, the curved surface of the alignment protrusion 19 contacts the spring member 5.
The axial direction is a direction in which a straight line parallel to the support shaft 7 of the outer ring 6 extends when the casing 1 is provided to face the outer ring 6.
Thus, since the lubricating device D of 1st Embodiment has provided the protrusion 19 for alignment which consists of a curved surface in the bottom face 12 of the casing 1, the leaf | plate spring 5 which is contacting this is used for the said alignment. It can swing along the curved surface of the protrusion 19 as shown by an arrow α in FIG.

When the bearing lubrication device D of the first embodiment is used for bearing lubrication, the casing 1 is formed on the fixed portion 3 in the same manner as in the prior art shown in FIG. The screw member 11 inserted into the through hole 3a is fixed to the fixing member 8, but when the casing 1 is fixed in this way, the central axis L1 of the through hole 3a shown in FIG. 3 is fixed.
On the other hand, the leaf spring 5 can swing as indicated by the arrow α in FIG. And since the said lubrication supply member 4 is pressed by the leaf | plate spring 5 in the direction of the outer ring | wheel 6 (refer FIG. 1, FIG. 2), this lubrication supply member 4 is integrated with the spring member 5 and the said arrow. It can swing like α.

Therefore, when the casing 1 is fixed to the fixing member 8 and the protrusion 15 of the lubrication supply member 4 is brought into contact with the outer peripheral surface of the outer ring 6, the straight line L2 passing through the contact surface of the lubrication supply member 4 and the fixing portion The angle formed by the central axis L1 of the three through holes 3a is automatically adjusted (see FIG. 3).
Therefore, even when the fixing portion 3 of the casing 1 is fixed to the fixing member 8, even if the central axis L1 of the through hole 3a of the fixing portion 3 is not parallel to the axis that is the rotation center of the outer ring 6, By the swing, the straight line passing through the contact surface of the lubrication supply member 4 is adjusted to be parallel to the axis that is the center of rotation of the outer ring 6.

In this manner, the contact surface of the lubrication supply member 4 with the outer ring 6 is parallel to the axis that is the center of rotation of the outer ring 6 when the leaf spring 5 swings with respect to the alignment protrusion 19. Therefore, the lubrication supply member 4 is pressed against the outer ring 6 evenly. Therefore, there is no occurrence of uneven application of the lubricant applied to the outer peripheral surface of the outer ring 6, and the optimum lubrication state can be maintained over a long period of time.
Thus, in the said 1st Embodiment, the alignment mechanism of this invention is comprised by the protrusion 19 for alignment formed in the said casing 1, and the contact part of the leaf | plate spring 5 which contacts this.
Further, it is not necessary to keep the dimensional accuracy on the fixed portion 3 and the fixed member 8 side high, and the manufacturing cost can be suppressed.

In the above embodiment, the lube-shaped plate spring 5 is used to press the lubrication supply member 4 to the outer ring 6 side, but the means for pressing the lubrication supply member 4 is not limited to the plate spring.
Further, means for pressing the lubrication supply member 4 toward the outer ring 6 such as a spring member is not an essential component. When the leaf spring 5 or the like is not used, the aligning protrusion 19 and the lubrication supply member 4 of the casing 1 are in direct contact with each other, and the aligning protrusion 19 and the lubrication supply member 4 constitute an aligning mechanism. Will do.

The lubrication device E for the bearing of the second embodiment shown in FIGS. 4 and 5 is that the aligning protrusion 20 is provided on the lubrication supply member 4 without providing the aligning protrusion on the casing 1. Although different from the first embodiment, other configurations are the same as those of the first embodiment.
The same components as those in the first embodiment are denoted by the same reference numerals as those in FIGS. Below, it demonstrates centering on a different part from 1st Embodiment.

As shown in FIGS. 4 and 5, the bearing lubrication device E according to the second embodiment has the positioning recess 18 for positioning the top 5 a of the leaf spring 5 without providing the alignment protrusion on the bottom surface 12 of the casing 1. It is directly provided on the bottom surface 12.
The lubrication supply member 4 provided between the projecting pieces 5b and 5b of the leaf spring 5 is provided with a centering projection 20 formed of a curved surface projecting toward the leaf spring 5 side.
The alignment protrusion 20 may be integrally formed of the same material as the lubrication supply member 4 and impregnated with a lubricant, or the protrusion formed of another material may be used as the lubrication supply member. 4 may be provided as the alignment protrusion 20.

The alignment protrusion 20 is a protrusion having a curved surface in which the axial cross section shown in FIG. 5 forms an arc, and the leaf spring 5 is in contact with the curved surface. The axial direction is a direction in which a straight line extending parallel to the indicating shaft 7 of the outer ring 6 extends when the casing 1 is provided facing the outer ring 6.
Therefore, the lubrication supply member 4 can swing as indicated by the arrow β with respect to the leaf spring 5 positioned by the positioning recess 18.

As described above, in the bearing lubrication device E according to the second embodiment, the lubrication supply member 4 can swing with respect to the leaf spring 5, that is, swings with respect to the casing 1. It can be automatically aligned.
Therefore, when the fixing portion 3 of the casing 1 is fixed to the fixing member 8, the central axis L1 of the through hole 3a on the fixing portion 3 side shown in FIG. 5 is not parallel to the axis that is the rotation center of the outer ring 6. Even so, since the lubrication supply member 4 swings, the protrusion 15 serving as a contact surface with the outer ring 6 can be kept parallel to the axis that is the center of rotation of the outer ring 6.
Therefore, the bearing lubrication device according to the second embodiment also has the contact surface of the lubrication supply member 4 and the outer ring without strict control of the dimensions and mounting accuracy of the fixing portion 3 and the fixing member 8 side for fixing the fixing portion 3. The lubricant can be applied evenly to the outer peripheral surface of the outer ring 6 while keeping the axis that is the rotation center of 6 in parallel.

As described above, in the second embodiment, the alignment mechanism of the present invention is constituted by the alignment protrusion 20 formed on the lubrication supply member 4 and the contact portion of the leaf spring 5 in contact therewith. .
In the second embodiment as well, the lubrication supply member 4 is pressed toward the outer ring 6 using the mountain-shaped leaf spring 5, but the means for pressing the lubrication supply member 4 is not limited to the leaf spring.
Further, means for pressing the lubrication supply member 4 toward the outer ring 6 such as a spring member is not an essential component. When the leaf spring 5 or the like is not used, the bottom surface 12 of the casing 1 and the alignment protrusion 20 of the lubrication supply member 4 are in direct contact with each other, and the adjustment is performed by the bottom surface 12 of the casing 1 and the alignment protrusion 20. It constitutes the heart mechanism.

In the first and second embodiments, the alignment protrusions 19 and 20 are provided on either the casing 1 or the lubrication supply member 4, but the alignment protrusions are provided on other members. Also good.
For example, a centering protrusion made of a curved surface protruding toward the bottom surface 12 of the casing 1 is formed on the leaf spring 5, and a centering mechanism is constituted by the alignment protrusion and the contact portion of the bottom surface 12. You can also. Alternatively, an alignment protrusion made of a curved surface protruding toward the lubrication supply member 4 is formed on the leaf spring 5, and an alignment mechanism is configured by the alignment protrusion and the contact portion of the lubrication supply member 4. You can also
Further, a member having a projecting curved surface such as a ball may be interposed between the leaf spring 5 and the casing 1 or between the leaf spring 5 and the lubrication supply member 4 to serve as a centering projection. .
In short, the alignment mechanism may be configured in any way as long as the lubrication supply member 4 can swing with respect to the axis that is the rotation center of the outer ring 6 in the casing 1.

FIG. 6 is an external perspective view of the bearing lubrication devices D and E of the first and second embodiments in use.
The fixing portions 3 of these lubricating devices D and E are integrally formed on the outer periphery of the casing 1, and the outer width dimension is smaller than the diameter dimension of the outer ring 6. As a result, even when the bearings B to be lubricated are arranged adjacent to each other, the fixed portions 3 of the lubricating device having an outer width dimension smaller than that of the bearings do not interfere with each other.

And the shape of the fixing | fixed part 3 is made trapezoid so that a width | variety may become narrow gradually toward the fixing | fixed part 3 from the casing 1. As shown in FIG. Because of such a shape, even if the lubricating device D or E cannot be mounted in a posture parallel to the counterpart rolling surface M shown in FIGS. 8 and 9, the protrusion 15 of the lubrication supply member 4 is attached to the outer ring 6. A rotation range that can be accommodated within the width dimension of the outer ring 6 is obtained when the outer ring 6 is arranged in contact with the outer peripheral surface of the outer ring 6 while being rotated with respect to the rotation center.
Further, in the lubrication devices D and E, the mounting surface facing the fixing member 8 is formed in the same plane from the fixing portion 3 to the main body 2, and is almost the same as the lubrication supply member 4 built in the casing 1. It is a right angle. Therefore, the lubricating devices D and E are in close contact with the fixing member 8 over the entire mounting surface formed on the main body 2 from the fixing portion 3 of the casing 1 to realize stable positioning.

Furthermore, the fixing part 3 is provided with two through holes 3a provided with counterbore 3b in a straight line, and by fixing at two places which is the smallest number of fixing parts, the lubricating devices D and E Co-rotation with the rotating outer ring 6 can be prevented. Further, the positioning of the lubricating devices D and E is facilitated.
Furthermore, the provision of the counterbore 3b makes it possible to use a short screw member 11 for fixing, and at the same time, the head of the screw member 11 for fixing is hidden in the counterbore 3b and protrudes into the peripheral space. It is supposed not to.

In the follower bearing B, when a load is applied to the outer ring 6, a bending moment is generated, and a bending stress is generated in the support shaft 7. Therefore, in consideration of the strength of the component, the limit value of the load that enables safe operation without the stress exceeding the allowable stress of the component material when the load is applied is determined.
When the conventional lubricating device A as shown in FIGS. 7 and 8 is used, the supporting member 7 of the follower bearing B is passed through the shaft hole of the casing 1 to support the lubricating device and to fix the fixing member 8. Fasten together. As a result, the position of the outer ring 6 to which the load is applied by the thickness of the casing 1 sandwiched between the fixing member 8 and the support shaft 7 moves in the direction of the hexagonal hole of the support shaft 7. As a result, the length of the support shaft 7 protruding from the fixing member 8 increases, and the bending stress generated on the support shaft 7 increases.

  For the above reasons, when the lubrication device A is used for the follower bearing B, the load is smaller than the limit value of the load that can be applied in normal use without using the lubrication device A, for example, with a load of 80% or less. It is restricted to be. On the other hand, when the lubricating devices D and E having the fixed portion 3 in the casing 1 are used as in the first and second embodiments, the protrusion of the support shaft 7 is the same as the follower bearing B that does not use the lubricating device. It can be loaded up to the same load.

  In the above description, the fixing member 8 shown in FIG. 9 is a fixing means for fixing the casing 1, and the example in which the support shaft 7 of the outer ring 6 is fixed to the fixing member 8 has been described. The fixing means for fixing may be a member different from the member fixing the support shaft 7.

  The present invention is a bearing lubrication member that supplies a lubricant to an outer ring such as a follower bearing, and can achieve alignment of the lubrication supply member in a lubrication apparatus that can be fixed separately from the follower bearing with a simple structure.

B Follower bearings D and E Lubrication device 1 Casing 2 Body 3 Fixing portion 3a Through hole 4 Lubrication supply member 5 Leaf spring 6 Outer ring 7 Support shaft 8 Fixing member 19 (alignment means) Alignment protrusion 20 Alignment protrusion Part L0 (which is the rotation center of the outer ring) Axis line L2 (through the contact surface of the lubrication supply member with the outer peripheral surface of the outer ring)

Claims (2)

A casing provided outside the outer ring that is rotatable relative to the support shaft; and a lubrication supply member that is provided in the casing and impregnated with a lubricant. When the casing is fixed to a fixing means, the lubrication supply member In the bearing lubrication device in which the outer ring and the outer ring contact in parallel with the axis of rotation of the outer ring and apply the lubricant to the outer peripheral surface of the outer ring, the casing has a fixing portion for mounting to the fixing means And a centering mechanism that enables the contact surface of the lubrication supply member with respect to the outer peripheral surface of the outer ring to swing in a direction parallel to the axis of rotation of the outer ring,
The alignment mechanism is the lubrication supply member, and is formed on a surface facing the inner surface of the casing, and is an alignment protrusion including a curved surface protruding toward the casing, and the alignment protrusion And a contact portion provided on the casing side in contact with the casing,
A spring member that presses the lubrication supply member against the outer ring is interposed between the inner surface of the casing facing the outer ring and the lubrication supply member, and the spring member is in contact with the alignment protrusion. A lubricating device for a bearing, characterized in that a contact portion is provided .   A casing provided outside the outer ring that is rotatable relative to the support shaft; and a lubrication supply member that is provided in the casing and impregnated with a lubricant. When the casing is fixed to a fixing means, the lubrication supply member In the bearing lubrication device in which the outer ring and the outer ring contact in parallel with the axis of rotation of the outer ring and apply the lubricant to the outer peripheral surface of the outer ring, the casing has a fixing portion for mounting to the fixing means And a centering mechanism that enables the contact surface of the lubrication supply member with respect to the outer peripheral surface of the outer ring to swing in a direction parallel to the axis of rotation of the outer ring,
The alignment mechanism is the lubrication supply member, and is formed on a surface facing the inner surface of the casing, and is an alignment protrusion including a curved surface protruding toward the casing, and the alignment protrusion And a contact portion provided on the casing side in contact with the casing,
A spring member that presses the lubrication supply member against the outer ring is interposed between the inner surface of the casing facing the outer ring and the lubrication supply member, and the spring member is in contact with the alignment protrusion. A lubricating device for a bearing, characterized in that a contact portion is provided.

Images