JP2002122153A - Roller bearing, and bearing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent dust from intruding inside a roller bearing having no seal in a bearing. SOLUTION: Both end faces of a double row ball bearing 1 in the bearing width direction are covered by sheets 2 and 3, and the sheets 2 and 3 are adhered to each end face using adhesive A by an attachable/detachable adhesive force. The double row ball bearing 1 is assembled with a housing H with the sheets 2 and 3 in a fitted condition. Before a shaft side member 8 is assembled with the double row ball bearing 1, a knob parts 23 is lifted and pulled up to detach the sheet 2. After the shaft side member 8 is assembled, a knob part 35 is lifted and pulled to detach the sheet 3, and the bearing device is assembled with a chassis.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a rolling bearing,
In particular, the present invention relates to a device suitable as a small bearing used for a spindle motor, a swing arm, a motor for an IC cooling fan, and the like in information devices such as a hard disk drive, a floppy disk drive, and an optical disk drive.

[0002]

2. Description of the Related Art Conventionally, as a bearing for a hard disk drive, there is a bearing in which two ball bearings are arranged via a spacer. Further, with the downsizing of the motor of the hard disk drive, there is a demand for extremely reducing the width (axial dimension) of the bearing to, for example, 2 mm or less. In a bearing having such a small width, it is difficult to provide a seal in the bearing. In other words, if a seal is provided in the bearing, it becomes difficult to extremely reduce the width of the bearing to, for example, 2 mm or less.

[0003]

If the seal is not provided in the bearing as described above, a bearing device in which the bearing is incorporated into the shaft and the housing or a bearing device in which the bearing is disposed between the shaft side member and the housing. When mounted on the chassis, there is a problem that dust easily enters the inside of the bearing. However, conventionally, the countermeasure has not been sufficiently taken.

[0004] It is an object of the present invention to prevent dust from entering the inside of a bearing when it is incorporated into a shaft and a housing, even if the rolling bearing has no seal provided in the bearing.

[0005]

In order to solve the above-mentioned problems, according to the present invention, a space between an inner race and an outer race is covered with a sheet from the outside, and the seat is attached to and detached from an end surface of the inner race and / or the outer race. A rolling bearing characterized by being adhered with a free adhesive force. According to the present invention, the rolling bearing is disposed between the shaft-side member and the housing. An outer flange portion that covers one side surface, and the housing has a ring portion in which the outer ring is provided, and a bearing device having an outward flange portion disposed on the other axial side. In, between the inner ring and the outer ring is covered with a sheet from the outside, this seat,
A bearing device characterized by being attached to at least one of an outward flange portion, an inner ring, and an outer ring of a housing by a detachable adhesive force.

[0006] In the present invention, the term "removable adhesive force" means an adhesive force that does not peel off when handled as a rolling bearing or a bearing device, but peels off when an appropriate peeling force is applied. It is preferable that the sheet is adhered with a pressure-sensitive adhesive whose adhesive force is reduced by ultraviolet irradiation or heating. Thereby, even when the adhesive force of the pressure-sensitive adhesive is considerably increased, the adhesive force is reduced by ultraviolet irradiation or heating, and the sheet is easily peeled. for that reason,
By considerably increasing the adhesive force of the pressure-sensitive adhesive, it is possible to prevent the sheet from peeling when handling as a rolling bearing or a bearing device, and to easily peel the sheet when peeling.

[0007]

Embodiments of the present invention will be described below. FIG. 1 is a cross-sectional view illustrating a rolling bearing and a bearing device according to a first embodiment of the present invention. The rolling bearing of this embodiment is a double row ball bearing 1. This double-row ball bearing 1 has two inner rings 4, 5 and two outer rings 6, 7,
The first inner ring 4 is disposed on the second inner ring 5 so as to surround the entire inner peripheral surface. The width of the second inner ring 5 is 1.2
mm, and the width of the inner peripheral portion 42 of the first inner ring 4 is 1 /
It is about three.

The two rows of balls 31, 32 of the double row ball bearing 1 are arranged at positions offset from each other in the radial direction of the bearing. The balls 31 in one row (first row) are arranged outside the balls 32 in the other row (second row) in the radial direction of the bearing.
The difference in diameter between the pitch circle of ball 31 and the pitch circle of ball 32 is
The diameter of the balls 31 and 32 is about four times. In the axial direction, the two rows of balls 31 and 32 are arranged at a distance between the center points of the balls 31 and 32 and separated by a radius of the balls 31 and 32.

The first outer ring 6 has the shape of a normal outer ring, while the second outer ring 7 is disposed at the position of the inner peripheral portion 73 having a raceway surface and the balls 31 in the first row in the radial direction. Middle part 74
And an outer peripheral portion 75 pressed against the side surface of the first outer ring 6. The width of the first outer ring 6 is formed larger than the width of the outer peripheral portion 75 of the second outer ring 7. The second inner ring 5 has the shape of a normal inner ring, but the first inner ring 4 includes an outer peripheral portion 41 having a raceway surface and an inner peripheral portion 42 on the shaft side. First
The width of the inner peripheral portion 42 of the inner ring 4 is formed smaller than the width of the outer peripheral portion 41. The width of the second inner ring 5 is formed larger than the width of the inner peripheral portion 42 of the first inner ring 4.

Both end faces in the bearing width direction of the double row ball bearing 1 are covered with sheets 2 and 3 made of synthetic resin (for example, polypropylene, polyethylene, polyester, etc.). The shape of these sheets 2 and 3 is a disk having a thickness of 100 μm and having central holes 21 and 33. The outer diameter of the seat 2 arranged on the end face on the first outer ring 6 side is the same as the outer diameter of the first outer ring 6, and the inner diameter is a dimension between the inner diameter and the outer diameter of the second inner ring 5. is there. The sheet 2 is provided with a knob 23 at one location on the inner periphery of the disk 22. An adhesive A is fixed to the surface of the peripheral edge of the center hole 21 of the sheet 2.

The sheet 2 is adhered to the end faces of the inner rings 4 and 5 of the bearing 1 with a detachable adhesive force by the adhesive A. The adhesive strength of the pressure-sensitive adhesive A to the bearing 1 is such that the adhesive A is not peeled off from the end faces of the inner rings 4 and 5 when the bearing 1 is handled, but is peeled off by strongly pulling the knob 23. The outer diameter of the seat 3 arranged on the end face on the second outer ring 7 side is slightly smaller than the outer diameter of the second outer ring 7,
The inside diameter is slightly larger than the inside diameter of the second inner ring 5. The sheet 3 has a knob 35 at one place on the outer periphery of the disk portion 34.
Are formed. An adhesive A is fixed to the outer peripheral surface of the disk portion 34 of the sheet 3.

The sheet 3 is adhered to the end surface of the second outer ring 7 of the bearing 1 with a detachable adhesive force by the adhesive A. The adhesive force of the pressure-sensitive adhesive A to the bearing 1 is as follows.
The handle 3 is not peeled off from the end face of the outer ring 7 when handling.
The adhesive strength is such that the film is peeled off when it is pulled strongly by holding it. FIG. 1A shows a state in which the double-row ball bearing 1 is incorporated in a housing H with the seats 2 and 3 attached. The housing H has a shape in which a ring portion H1 and an outward flange portion H2 are integrated. The outer races 6, 7 of the double row ball bearing 1 are fixed in the ring portion H1 by bonding or press fitting.

FIG. 1B shows a state in which the shaft-side member 8 is incorporated in the double-row ball bearing 1. The shaft-side member 8 has a shape in which a cylindrical portion 81 and an outward flange portion 82 are integrated. A pressing member 82a that presses the second inner ring 5 in the axial direction is formed on the outward flange portion 82. When assembling the shaft-side member 8 into the double-row ball bearing 1, first, the sheet 2 disposed on the end face on the first outer ring 6 side is peeled off by pulling strongly with the knob 23. Next, the first
Of the shaft-side member 8 from the end surface side of the outer ring 6 side until the pressing member 82 a hits the end surface of the second inner ring 5.
Into the inner ring 5. The fixing of the cylindrical portion 81 to the second inner ring 5 is performed by bonding or press fitting.

In this manner, the double-row ball bearing 1 is disposed between the housing H and the axial member 8, and one end of the double-row ball bearing 1 in the axial direction (the first outer ring 6 side) is placed on the axial member. 8 is covered with the outward flange portion 82, and the other end in the axial direction (the second outer ring 7).
A bearing device whose side is covered by the sheet 3 is obtained. When attaching this bearing device to the chassis, the knob 3
The bearing device 5 is attached to the chassis after the sheet 3 disposed on the end surface on the second outer ring 7 side is peeled off by pulling strongly while holding the bearing 5.

As described above, by covering both end surfaces in the bearing width direction with the sheets 2 and 3, the double-row ball bearing 1 in which the seal is not provided in the bearing is provided before the mounting to the chassis is completed. Garbage can be prevented from entering. After being attached to the chassis, the chassis functions as a seal. In this embodiment, since the seats 2 and 3 are provided with the center holes 21 and 33, the incorporation of the shaft-side member 8 into the double-row ball bearing 1 is performed with reference to the inner circumferential circle of the second inner ring 5. The incorporation of the bearing device into the chassis can be performed with reference to the inner circumferential circle of the cylindrical portion 81 of the shaft-side member 8.

In addition, according to the bearing device of this embodiment, the arrangement of the two rows of balls 31, 32 is shifted in the radial direction of the bearing, and the arrangement of the first inner ring 4 and the second outer ring 7 is changed. , Inner ring 4
Is arranged radially outside of the inner peripheral portion 73 of the outer race 7 so that the width of the double row ball bearing can be reduced. Further, since the first inner ring 4 is provided outside the second inner ring 5, the preload adjustment can be performed before the first inner ring 4 is attached to the shaft-side member 8. In addition, the code | symbol S of FIG.1 (b) shows the clearance gap for preload adjustment.

FIG. 2 is a sectional view showing a bearing device according to a second embodiment of the present invention. This bearing device is shown in FIG.
Similarly to (b), the double-row ball bearing 1 is disposed between the housing H and the shaft-side member 8, and one axial end (the first outer ring 6 side) of the double-row ball bearing 1 is placed on the shaft-side member 8. Outward flange part 8
2 and the other end side in the axial direction (the second outer ring 7 side) is covered with the seat 30.

The outer diameter of the disk portion 34 of the seat 30 is larger than the outer diameter of the ring portion H1 of the housing H.
The zero center hole 33 has a size corresponding to the inner diameter of the cylindrical portion 81 of the shaft-side member 8. The sheet 30 has a knob 35 at one position on the outer periphery of the disk portion 34. An adhesive A is fixed to the outer peripheral surface of the disk portion 34 of the sheet 30.

The sheet 30 is formed by the adhesive A
It is adhered to the outward flange portion H2 of the housing H with a detachable adhesive force. The adhesive force of the adhesive A to the outward flange portion H is such that the adhesive agent A does not peel off from the outward flange portion H during handling of the bearing device but is peeled off by strongly pulling the knob 35. Therefore, according to the bearing device of this embodiment, it is possible to prevent dust from entering the inside of the double row ball bearing 1 in which no seal is provided in the bearing until the bearing device is mounted on the chassis. In addition, since the structure of the double-row ball bearing 1 is the same as that of the first embodiment, the above-described effects resulting from the structure of the double-row ball bearing 1 can be obtained as in the first embodiment.

FIG. 3 is a sectional view showing a bearing device corresponding to a third embodiment of the present invention. In this bearing device, the double-row ball bearing 10 is disposed between the housing H and the shaft-side member 80, and one end of the double-row ball bearing 10 in the axial direction (the first outer ring 6 side).
Are covered with the pressing member 82 of the shaft-side member 80, and the other end in the axial direction (the second outer ring 7 side) is covered with the sheet 9. In the double-row ball bearing 10, unlike the first and second embodiments, the arrangement of the two rows of balls is the same in the radial direction of the bearing, and the two inner rings 4, 5 and the outer rings 6, 7 have the same width, respectively. Are formed to have a constant width in the entire radial direction. The housing H has the same shape as the first and second embodiments. Shaft side member 80
The cylindrical portion 81 and the outward flange portion 82 are separate bodies, and the outward flange portion 82 and the shaft 83 are integrated.

The seat 9 has a disk shape whose outer diameter is larger than the outer diameter of the ring portion H1 of the housing H, and has no center hole. An adhesive A is fixed to the outer peripheral surface of the sheet 9. The sheet 9 is adhered to the outward flange portion H2 of the housing H and the end surface of the outer ring 7 with an adhesive A. Also, at the outer edge of the sheet 9,
The tape 91 is fixed with the adhesive B on the surface opposite to the surface on which the adhesive A is fixed. The adhesive force between the sheet 9 and the tape 91 by the adhesive B is sufficiently stronger than the adhesive force of the adhesive A to the outer ring 7 and the outward flange portion H2. The adhesive force of the pressure-sensitive adhesive A is such that the sheet 9 does not peel off from the outward flange portion H2 of the housing H and the end surface of the outer ring 7 when the bearing device is handled, but is easily peeled off by strongly pulling the tape 91 with the tape 91. It is.

Therefore, according to the bearing device of this embodiment, it is possible to prevent dust from entering the inside of the double-row ball bearing 1 in which no seal is provided in the bearing until the bearing is mounted on the chassis. it can. Further, since the sheet 9 is not provided with the center hole or the knob portion and the tape 91 for removing the sheet 9 is fixed to the sheet 9, the sheet 9 can be more easily formed than the sheets 2 and 3 of the first and second embodiments. Can be made. Also,
If the tape 91 is adhered to the sheet 9 just before the sheet 9 is removed, the tape 91 does not interfere with the handling up to that time.

In these embodiments, the sheets 2 and
Each of the seats 3 and 9 has a shape that covers substantially the entire end surface in the bearing width direction, but the shape of the seats 2, 3 and 9 may be any shape that can surely cover the space between the inner ring and the outer ring. Further, in these embodiments, the knobs 23, 35 and the tape 91 are provided as means for removing the sheets 2, 3, 9; however, this is not essential. For example, the seat may be removed using a center hole of the seat or a gap between the seat and the rolling bearing or the bearing device.

FIG. 4 is a sectional view showing a rolling bearing device corresponding to a fourth embodiment of the present invention. This rolling bearing device is similar to the bearing device of the second embodiment, but differs from the second embodiment in that the knob 30 is not provided on the sheet 30 and that the adhesive C is used instead of the adhesive A. different. The pressure-sensitive adhesive C is a pressure-sensitive adhesive whose adhesive strength is reduced by ultraviolet irradiation. The adhesive force of the adhesive C to the outward flange portion H2 is an adhesive force that is not peeled off from the end face of the outward flange portion H2 during handling of the bearing device (higher than that of the adhesive A). As shown in FIG. 4 (b), the adhesive force is reduced to such an extent that it can be easily peeled off with the vacuum tweezers 300 or the like. When the sheet 30 is peeled off, the adhesive C is irradiated with ultraviolet rays from the outer peripheral surface side of the sheet 30. Alternatively, when the sheet 30 is transparent to ultraviolet light, the sheet 30 can be peeled off by irradiating the adhesive C with ultraviolet light via the sheet 30.

Examples of such a pressure-sensitive adhesive include a pressure-sensitive adhesive layer of a UV-peelable pressure-sensitive adhesive tape (a tape in which an ultraviolet-peelable pressure-sensitive adhesive layer is provided on a film (substrate) made of an ultraviolet-permeable polyolefin or the like). And the film obtained by partially removing the film can be used as an integrated product of the sheet 30 and the adhesive C. Such UV-peelable adhesive tapes are manufactured by Sliontec, Furukawa Electric Co., Ltd.
And so on.

Therefore, according to the bearing device of this embodiment, it is possible to prevent dust from entering into the double-row ball bearing 1 in which no seal is provided in the bearing before the bearing device is mounted on the chassis. Can be. In addition, since the adhesive C whose adhesive strength is reduced by ultraviolet irradiation is used,
When the sheet 30 is peeled without being peeled off during handling, the sheet 30 can be easily peeled with a smaller force than in the case of the second embodiment.

FIG. 5 is a sectional view showing a rolling bearing corresponding to a fifth embodiment of the present invention. This rolling bearing 100
Is a single-row ball bearing provided with an inner ring 101, an outer ring 102, and a ball 103. Both end surfaces in the bearing width direction of the rolling bearing 100 are made of a sheet 20 made of an ultraviolet-permeable synthetic resin (for example, polypropylene, polyethylene, polyester, or the like).
Covered with 0.

The shape of these sheets 200 is such that the center hole 2
It has a thickness of 100 μm and has an outer diameter slightly smaller than the outer diameter of the outer ring 102. Further, in these sheets 200, the same adhesive C as that of the fourth embodiment is fixed to the surface of the portion that becomes the outer peripheral edge of the disk. Each sheet 200 is bonded to both end surfaces of the outer ring 102 of the bearing 100 by the adhesive C. In addition, sheet 2
When peeling off the adhesive C
Is irradiated with ultraviolet light.

Therefore, according to the bearing device of this embodiment, the single-row ball bearing 100 in which no seal is provided in the bearing is provided.
When the bearing 100 is incorporated into a shaft and a housing,
It is possible to prevent garbage from entering the inside. Further, since the adhesive C whose adhesive strength is reduced by ultraviolet irradiation is used, the sheet 200 does not peel off during handling, and the sheet 200 can be peeled off with a small force.

FIG. 6 is a sectional view showing a rolling bearing corresponding to a sixth embodiment of the present invention. This rolling bearing 100
Is the same single-row ball bearing as in the fifth embodiment. One end surface of the rolling bearing 100 in the bearing width direction (the end surface on the pocket side of the crowned cage 104) is covered with a sheet 201 made of the same material as the sheet 200 of the fifth embodiment. The shape of the sheet 201 is a disc having a thickness of 100 μm without a center hole, and its outer diameter is slightly smaller than the outer diameter of the outer ring 102.

Further, the same adhesive C as that of the fourth embodiment is fixed to the surface of the sheet 201 which is the outer peripheral edge of the disk. The sheet 201 is used for the bearing 1 by the adhesive C.
00 is attached to one end surface of the outer ring 102. When the sheet 201 is peeled off, the adhesive C is irradiated with ultraviolet light via the sheet 201. Therefore, according to the bearing device of this embodiment, when the single-row ball bearing 100 having no seal provided in the bearing is incorporated into the shaft and the housing,
It is possible to prevent dust from entering the inside of the bearing 100. Further, since the pressure-sensitive adhesive C whose adhesive strength is reduced by the irradiation of ultraviolet rays is used, the sheet 201 may be used during handling.
Can be peeled off with a small force when the sheet 201 is peeled off.

FIG. 7 is a sectional view showing a rolling bearing device corresponding to a seventh embodiment of the present invention. This rolling bearing device is in a state where the same double row ball bearing 10 as in the third embodiment is attached to a cylindrical portion 81 which is a shaft side member. Both ends of the double row ball bearing 10 in the axial direction are the same as those of the fifth embodiment.
0, and each sheet 200 is fixed by the same adhesive C as in the fourth embodiment, which is arranged at the same position as in the fifth embodiment.

Each sheet 200 is adhered to the end faces of the outer races 6 and 7 of the double row ball bearing 10 by the adhesive C. When the sheet 200 is peeled off, the adhesive C is irradiated with ultraviolet light via the sheet 200. Therefore, according to the bearing device of this embodiment, it is possible to prevent dust from entering the bearing 10 when the double-row ball bearing 10 having no seal provided in the bearing is incorporated into the shaft and the housing. . Further, since the adhesive C whose adhesive strength is reduced by the irradiation of ultraviolet rays is used, the sheet 2 is used during handling.
When the sheet 200 is peeled off, the sheet 200 can be peeled off with a small force.

FIG. 8 is a sectional view showing a rolling bearing device corresponding to an eighth embodiment of the present invention. This rolling bearing device is similar to the bearing device of the third embodiment, except that the tape 9 is not provided on the sheet 9 and that the same adhesive C as in the fourth embodiment is used in place of the adhesive A. Different from the third embodiment. Therefore, according to the bearing device of this embodiment, it is possible to prevent dust from entering the double-row ball bearing 10 in which no seal is provided in the bearing before the bearing device is mounted on the chassis. In addition, since the adhesive C whose adhesive strength is reduced by ultraviolet irradiation is used,
When the sheet 30 is peeled without being peeled during handling, the sheet 30 can be easily peeled with a smaller force than in the case of the third embodiment.

The rolling bearing and the bearing device of the present invention include a configuration using an adhesive whose adhesive strength is reduced by heating, in addition to the above-mentioned adhesives A and C. As such an adhesive, for example, the adhesive layer and the film of a heat-peelable pressure-sensitive adhesive tape (a tape in which a heat-peelable pressure-sensitive adhesive layer is provided on a film (substrate) made of PET or the like) are partially removed. It can also be used as an integrated product of the sheet and the pressure-sensitive adhesive C. An example of such a heat-peelable pressure-sensitive adhesive tape is a heat-peelable sheet “Riba Alpha” manufactured by Nitto Denko Corporation.

[0036]

As described above, according to the present invention,
It is possible to prevent dust from entering the inside of the rolling bearing having no seal provided in the bearing. In particular, according to the rolling bearing or the bearing device according to claims 3 to 6, the sheet is not peeled when handling as the rolling bearing or the bearing device by considerably increasing the adhesive force of the pressure-sensitive adhesive. It can be easily peeled off.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating a rolling bearing and a bearing device according to a first embodiment of the present invention.

FIG. 2 is a sectional view showing a bearing device according to a second embodiment of the present invention.

FIG. 3 is a sectional view showing a bearing device corresponding to a third embodiment of the present invention.

FIG. 4 is a sectional view showing a bearing device according to a fourth embodiment of the present invention.

FIG. 5 is a sectional view showing a rolling bearing corresponding to a fifth embodiment of the present invention.

FIG. 6 is a sectional view showing a rolling bearing corresponding to a sixth embodiment of the present invention.

FIG. 7 is a sectional view showing a bearing device corresponding to a seventh embodiment of the present invention.

FIG. 8 is a sectional view showing a bearing device according to an eighth embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Double-row ball bearing (rolling bearing) 10 Double-row ball bearing (rolling bearing) 2 Sheet 3 Seat 4 First inner ring 5 Second inner ring 6 First outer ring 7 Second outer ring 8 Shaft side member 9 Sheet 23 Knob Part 35 Knob part 80 Shaft side member 81 Cylindrical part 82 Outward flange part 83 Shaft 91 Tape 100 Single row ball bearing (rolling bearing) 101 Inner ring 102 Outer ring 103 Ball 104 Crowned retainer 200 Sheet 201 Sheet 300 Vacuum tweezers A Adhesive Agent B Adhesive C Adhesive H Housing H1 Ring H2 Outward flange

Claims (6)

[Claims] 1. A rolling bearing, wherein a space between an inner ring and an outer ring is covered with a sheet from the outside, and the sheet is adhered to an end face of the inner ring and / or the outer ring with a detachable adhesive force. . 2. A rolling bearing is disposed between a shaft-side member and a housing, wherein the shaft-side member includes a tubular portion on which an inner ring is provided and a shaft is provided;
An outer flange portion is disposed at one axial end and covers one side surface of the bearing.The housing includes a ring portion in which the outer ring is provided, and an outward flange portion disposed at the other axial end. In the bearing device having, at the other end in the axial direction, the space between the inner ring and the outer ring is covered with a sheet from the outside, and this sheet is attached to and detached from at least one of the outward flange portion of the housing, the inner ring, and the outer ring. A bearing device characterized by being adhered with a free adhesive force. 3. A space between the inner ring and the outer ring is covered from outside with a sheet, and the sheet is adhered to an end face of the inner ring and / or the outer ring with an adhesive whose adhesive strength is reduced by ultraviolet irradiation. A rolling bearing. 4. A rolling bearing is disposed between a shaft-side member and a housing, wherein the shaft-side member has a tubular portion on which an inner ring is provided and a shaft is provided;
An outer flange portion is disposed at one axial end and covers one side surface of the bearing.The housing includes a ring portion in which the outer ring is provided, and an outward flange portion disposed at the other axial end. In the bearing device having, at the other end in the axial direction, the space between the inner ring and the outer ring is covered with a sheet from the outside, and this sheet is provided with ultraviolet rays on at least one of the outward flange portion of the housing, the inner ring, and the outer ring. A bearing device, wherein the bearing device is bonded with an adhesive whose adhesive force is reduced by irradiation. 5. A sheet between the inner ring and the outer ring is covered with a sheet from the outside, and the sheet is adhered to an end face of the inner ring and / or the outer ring with an adhesive whose adhesive force is reduced by heating. Rolling bearing characterized. 6. A rolling bearing is disposed between a shaft-side member and a housing, wherein the shaft-side member has a tubular portion on which an inner ring is provided and a shaft is provided,
An outer flange portion is disposed at one axial end and covers one side surface of the bearing.The housing includes a ring portion in which the outer ring is provided, and an outward flange portion disposed at the other axial end. In the bearing device having, at the other end in the axial direction, the space between the inner ring and the outer ring is covered with a sheet from the outside, and the sheet is heated by at least one of the outward flange portion of the housing, the inner ring, and the outer ring. A bearing device characterized in that the bearing device is bonded with an adhesive whose adhesive force is reduced by the adhesive.