GB2571474A - Roller bearing - Google Patents
Roller bearing Download PDFInfo
- Publication number
- GB2571474A GB2571474A GB1907945.8A GB201907945A GB2571474A GB 2571474 A GB2571474 A GB 2571474A GB 201907945 A GB201907945 A GB 201907945A GB 2571474 A GB2571474 A GB 2571474A
- Authority
- GB
- United Kingdom
- Prior art keywords
- outer ring
- pin
- hole portion
- hole
- fitted
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
- F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
- F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
- F16C35/07—Fixing them on the shaft or housing with interposition of an element
- F16C35/077—Fixing them on the shaft or housing with interposition of an element between housing and outer race ring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
- F16C19/44—Needle bearings
- F16C19/46—Needle bearings with one row or needles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
- F16C19/44—Needle bearings
- F16C19/46—Needle bearings with one row or needles
- F16C19/466—Needle bearings with one row or needles comprising needle rollers and an outer ring, i.e. subunit without inner ring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/58—Raceways; Race rings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/58—Raceways; Race rings
- F16C33/583—Details of specific parts of races
- F16C33/586—Details of specific parts of races outside the space between the races, e.g. end faces or bore of inner ring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2226/00—Joining parts; Fastening; Assembling or mounting parts
- F16C2226/10—Force connections, e.g. clamping
- F16C2226/12—Force connections, e.g. clamping by press-fit, e.g. plug-in
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2240/00—Specified values or numerical ranges of parameters; Relations between them
- F16C2240/40—Linear dimensions, e.g. length, radius, thickness, gap
- F16C2240/70—Diameters; Radii
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C9/00—Bearings for crankshafts or connecting-rods; Attachment of connecting-rods
- F16C9/02—Crankshaft bearings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
- Mounting Of Bearings Or Others (AREA)
Abstract
A roller bearing wherein a plurality of needle rollers (3) are held by a holding implement (4) so as to be capable of rolling along a track surface (2) of an outer ring (1) that is fitted to a housing and has an outer ring hole (5), and a pin (6) fits into the outer ring hole (5). The outer ring hole (5) has a step part (10) formed between the inner periphery of a fitting hole part (8), in which the pin (6) is interference-fitted, and a communication hole part (9), which is connected to the fitting hole part (8), and, in a state in which the pin (6) is supported on the step part (10), the pin (6) engages with the housing (30).
Description
SPECIFICATION
Title of the Invention: Rolling bearing
TECHNICAL FIELD [0001]
The present invention relates to a rolling bearing including an outer ring rotationally fixed to a housing.
BACKGROUND ART [0002]
A crankshaft is mounted in a crankcase of, e.g., an automobile, and rotatably supported by a rolling bearing. Such a rolling bearing is used in a high temperature environment while fitted in a housing fixedly fitted to the crankcase.
[0003]
In such a high temperature environment, due to the difference in linear expansion coefficient between a steel material forming the outer ring of the rolling bearing (such as bearing steel) and an aluminum material forming the housing, a large gap may be formed between the outer ring and a fitting hole of the housing in which the outer ring is fitted. As a result thereof, the rolling bearing and the fitting hole of the housing may be circumferentially displaced relative to each other (such circumferential relative displacement is hereinafter referred to as the “creep”).
[0004]
The below-identified Patent Document 1 discloses a rolling bearing in which the above creep can be prevented. This rolling bearing includes a radially extending outer ring hole formed in the outer periphery of the outer ring, and a columnar pin fixedly press-fitted in the outer ring hole. [0005]
By press-fitting this pin in the outer ring hole of the outer ring, and a radially extending housing hole formed in the inner periphery of the housing so as to be aligned with the outer ring hole with the outer ring fitted in the housing, it is possible to prevent the creep between the housing and the outer ring of the rolling bearing fitted in the housing.
PRIOR ART DOCUMENTS
PATENT DOCUMENTS [0006]
Patent document 1: Japanese Unexamined Patent Application Publication No. 2014-105732
SUMMARY OF THE INVENTION
PROBLEMS TO BE SOLVED BY THE INVENTION [0007]
In order to form the outer ring hole in the outer periphery of the outer ring of the rolling bearing disclosed in Patent Document 1, it is normally necessary to increase the radial thickness (wall thickness) of the outer ring so as to ensure sufficient strength of the outer ring. However, if there is not sufficient space in the housing for fitting the rolling bearing, it is difficult to increase the wall thickness of the outer ring.
[0008]
In order to reliably fixedly press-fit the pin in the outer ring hole, it is, for example, necessary to increase the length of the portion of the pin press-fitted in the outer ring hole, i.e., the portion of the outer ring hole in which the pin is press-fitted. However, if it is difficult to increase the overall wall thickness of the outer ring for the above-described reason, increasing the press-fitting length of the pin/outer ring hole results in a reduced wall thickness of the outer ring between the bottom surface of the outer ring hole and the radially inner surface of the outer ring.
[0009]
If the wall thickness of this portion of the outer ring (i.e., the portion defining the bottom of the outer ring hole) is small, when the pin is press-fitted into the outer ring hole, while compressing the air in the outer ring hole, the bottom of the outer ring hole may be broken due to the increased pressure in the outer ring hole, thereby damaging the outer ring. [0010]
Also, if oil used during machining or cleaning remains in the outer ring hole, too, the oil in the outer ring hole is compressed when the pin is press-fitted into the outer ring hole, and thus the pressure in the outer ring hole increases, so that the bottom of the outer ring surface may be broken, thereby damaging the outer ring.
[0011]
It is an object of the present invention to provide a rolling bearing in which the damage to the outer ring can be prevented.
MEANS FOR SOLVING THE PROBLEMS [0012]
In order to achieve the above object, the present invention provides a rolling bearing comprising: an outer ring having a raceway surface, and fitted in a housing; a plurality of rolling elements configured to be capable of rolling along the raceway surface of the outer ring! a cage retaining the rolling elements so as to keep the rolling elements circumferentially spaced apart from each other! and a pin fixed to the outer ring, wherein the outer ring has an outer ring hole through which an inner periphery and an outer periphery of the outer ring communicate with each other, and wherein the pin is fixedly fitted in the outer ring hole with interference, and in engagement with the housing while protruding beyond the outer periphery of the outer ring.
[0013]
With this arrangement, since the inner and outer peripheries of the outer ring communicate with each other through the outer ring hole, when the pin is fitted into the outer ring hole with interference, a fluid such as air or oil is not compressed in the outer ring hole.
[0014]
The outer ring hole may comprise^ a fitting hole portion which is located on a radially outer side of the outer ring, and in which the pin is fitted! a communication hole portion communicating with the fitting hole portion! and a step disposed between an inner periphery of the fitting hole portion and an inner periphery of the communication hole portion, the step supporting the pin.
[0015]
With this arrangement, since the pin fitted in the outer ring hole with interference is supported by the step of the outer ring hole, it is possible to prevent the pin from protruding beyond the inner periphery of the outer ring.
[0016]
The step may be tapered so as to be inclined radially inwardly of the outer ring from the inner periphery of the fitting hole portion toward the inner periphery of the communication hole portion. With this arrangement, it is possible to alleviate the stress applied to the boundary between the inner periphery of the fitting hole portion and the step by the pin fitted in the outer ring hole with interference.
[0017]
The communication hole portion of the outer ring hole may open to the raceway surface of the outer ring. With this arrangement, since the outer ring has a sufficient axial wall thickness at each of its portions on both axial sides of the outer ring hole, when the pin is fitted into the outer ring hole with interference, it is possible to prevent the breakage of the outer ring due to the stress applied to the portion of the outer ring around the outer ring hole.
[0018]
The rolling elements may comprise needle rollers. The communication hole portion may have a circular cross section, and a diameter dimension smaller than 1/2 of an outer diameter dimension of each of the needle rollers.
[0019]
If the diameter dimension of the communication hole portion is smaller than 1/2 of the outer diameter dimension of each of the needle rollers, it is possible to reduce the contact surface pressure between the raceway surface of the outer ring and the needle rollers while the ball bearing is operating, and thus to make the service life of the ball bearing less likely to decrease.
EFFECTS OF THE INVENTION [0020]
According to the present invention, since the inner and outer peripheries of the outer ring communicate with each other through the outer ring hole, when the pin is fitted into the outer ring hole with interference, a fluid such as air or oil will not be compressed in the outer ring hole. Therefore, the pressure in the outer ring hole will not increase, so that the outer ring will not be damaged.
BRIEF DESCRIPTION OF THE DRAWINGS [0021]
Fig. 1 is a vertical sectional view of a rolling bearing embodying the present invention.
Fig. 2 is a vertical sectional view of a portion of the rolling bearing.
Fig. 3 is a sectional view illustrating the state in which the rolling bearing is fitted in a housing.
Fig. 4 is an enlarged view illustrating the state in which the rolling bearing is fitted in the housing.
BEST MODE FOR CARRYING OUT THE INVENTION [0022]
A rolling bearing 20 embodying the present invention is now described with reference to the drawings. The rolling bearing 20 of the embodiment rotatably supports a crankshaft (not shown) mounted in a crankcase (not shown), and is fitted in a housing 30 fixed to the crankcase. [0023]
As illustrated in Fig. 1, the rolling bearing 20 of the embodiment includes an outer ring 1 fitted in the housing 30, and having a raceway surface 2 on its inner periphery; a plurality of needle rollers 3 as rolling elements that are capable of rolling along the raceway surface 2 of the outer ring 1; a cage 4 retaining the needle rollers 3 to keep the needle rollers 3 circumferentially spaced apart from each other; and a pin 6 fixedly fitted, with interference, in a radially extending outer ring hole 5 formed in the outer ring 1. With this rolling bearing 20, which includes the pin 6, the outer ring 1 has a thin wall thickness, i.e., has a wall thickness of 3.5 mm to 5.0 mm. Preferably, the wall thickness of the outer ring 1 is at least 3.5 mm. Specifically, if the rolling bearing 20 has an outer diameter of 40 mm or more, the wall thickness of the outer ring 1 is preferably 3.5 mm or more and 1/10 or less of the outer diameter of the rolling bearing 20, and if the rolling bearing 20 has an outer diameter of less than 40 mm, the wall thickness of the outer ring 1 is preferably 3.5 mm to 5.0 mm.
[0024]
As illustrated in Figs. 3 and 4, the housing 30 is circumferentially divided into two housing portions 32 and 33 along a surface 31 extending through the outer ring hole 5 of the outer ring 1. The housing 30 has a fitting recess 34 and a pin hole 35 which each spans both of the housing portions 32 and 33.
[0025]
The outer ring 1 of the rolling bearing 20 is fitted in the fitting recess 34 of the housing 30. The pin 6 is, as described above, fixedly fitted in the outer ring hole 5 with interference, and is engaged in the pin hole 35 of the housing 30. The housing 30 may be made of the same material as the crankcase, such as an aluminum alloy.
[0026]
As illustrated in Fig. 1, the outer ring 1 includes flanges 7 on the respective axial ends of its raceway surface 2, and the outer ring hole 5 extends radially inwardly from the outer periphery of the outer ring 1. As illustrated in Fig. 2, the outer ring 1 has relief grooves 2a in the respective axial ends of its raceway surface 2. The outer ring 1 is preferably a solid outer ring formed, for example, by turning a steel pipe, but may be formed by pressing a steel plate.
[0027]
The outer ring hole 5 is formed in the axially central portion of the outer ring 1 such that the inner and outer peripheries of the outer ring 1 communicate with each other. As illustrated in Fig. 2, the outer ring hole 5 comprises a fitting hole portion 8 located on the radially outer side of the outer ring 1; and a communication hole portion 9 located on the radially inner side of the outer ring 1, and communicating with the fitting hole portion 8.
[0028]
In the embodiment, the fitting hole portion 8 includes a cylindrical inner peripheral surface having a circular cross section. The fitting hole portion 8 further includes an opening 8a formed in the outer periphery of the outer ring 1, and tapered such that the diameter dimension of the opening 8a increases radially outwardly of the outer ring 1. The diameter dimension dl of the fitting hole portion 8 is slightly smaller than the outer diameter dimension d2 of the pin 6 so that the pin 6 can be fixedly fitted in the fitting hole portion 8 with interference.
[0029]
The sectional shape of the fitting hole portion 8 is not limited to a circular shape, and may be another shape corresponding to the sectional shape of the pin 6, provided that the pin 6 can be fitted in the fitting hole portion 8 with interference such that the entire circumference of the outer peripheral surface of the pin 6 comes into contact with the entire circumference of the inner peripheral surface of the fitting hole portion 8.. [0030]
In the embodiment, the communication hole portion 9 has a cylindrical inner peripheral surface having a circular cross section. The communication hole portion 9 opens to the raceway surface 2 of the outer ring 1. The communication hole portion 9 has a center axis coinciding with the center axis of the fitting hole portion 8, and has a diameter dimension d3 smaller than the diameter dimension dl of the fitting hole portion 8. The sectional shape of the communication hole portion 9 is not limited to a circular shape, and may be another shape, provided that the communication hole portion 9 can communicate with the fitting hole portion 8, and open to the raceway groove 2 of the outer ring 1.
[0031]
The diameter dimension d3 of the communication hole portion 9 is set to be smaller than 1/2 of the outer diameter dimension d4 of each needle roller 3. By setting the diameter dimension d3 of the communication hole portion 9 in this way, it is possible to reduce the contact surface pressure between the raceway surface 2 of the outer ring 1 and the needle rollers 3 while the ball bearing 20 is operating, and thus to make the service life of the ball bearing 20 less likely to decrease.
[0032]
In the embodiment, the outer ring hole 5 further includes a step 10 between the inner peripheries of the fitting hole portion 8 and the communication hole portion 9. The step 10 is tapered so as to be inclined radially inwardly of the outer ring 1 from the inner periphery of the fitting hole portion 8 toward the inner periphery of the communication hole portion 9. The step 10 supports the pin 6 with the end of the pin 6 which is fitted in the outer ring hole 5 with interference kept in abutment with the step 10.
[0033]
The step 10 does not necessarily need to be a tapered step, if the step can support the pin 6. However, if the step 10 is a tapered step, it is possible to alleviate the stress applied to the boundary between the inner periphery of the fitting hole portion 8 and the step 10 by the pin 6 fitted in the outer ring hole 5 with interference.
[0034]
If the pin 6 can be fixedly fitted in the outer ring hole 5 with interference, the step 10 may be omitted. For example, the entire inner peripheral surface of the outer ring hole 5 may be a cylindrical surface. However, the step 10 is preferably disposed in the outer ring 5 as in this embodiment, because the step 10 can support the pin 6, thereby preventing the pin 6 from protruding beyond the raceway surface 2 of the outer ring 1. [0035]
The cage 4 includes a pair of circular annular rims 11 axially spaced apart from each other; and a plurality of pillars 12 disposed between the pair of rims 11, while circumferentially spaced apart from each other to define a pocket 13 between each circumferentially adjacent pair of pillars
12. The cage 4 is guided by the outer ring 1 with the outer peripheral surfaces of the rims 11 opposed to the inner peripheral surfaces of the respective flanges 7 of the outer ring 1.
[0036]
The radially inner surfaces of the pillars 12 are located radially inwardly of the pitch circle diameter (PCD) (see the dashed line in Fig. 4) of the needle rollers 3.
[0037]
The cage 4 is formed by injection molding of a synthetic resin or by pressing a steel plate. The needle rollers 3 are press-fitted and retained in the respective pockets 13.
[0038]
The pin 6 is a columnar member made of metal, and has chamfers 6a around the entire circumferences of the respective ends of the pin 6. The pin 6 has a length allowing the pin 6 to protrude beyond the outer peripheral surface of the outer ring 1 with the pin 6 fitted in the outer ring hole 5 with interference, and supported by the step 10.
[0039]
As illustrated in Fig. 4, the pin 6 is in engagement with the housing 30, while fitted in the pin hole 35 of the housing 30 with a clearance defined between the pin 6 and the pin hole 35. This engagement prevents the creep between the rolling bearing 20 and the housing 30.
[0040]
With the rolling bearing 20 according to the embodiment, since the inner and outer peripheries of the outer ring 1 communicate with each other through the outer ring hole 5, when the pin 6 is fitted into the outer ring hole 5 with interference, a fluid such as air or oil is not compressed in the outer ring hole 5. This prevents damage to the outer ring, i.e., the breakage of the bottom of the outer ring hole due to, as with conventional rolling bearings, the fluid pressure buildup in the outer ring hole.
[0041]
Since the end of the pin 6 fitted in the outer ring hole 5 is supported by the step 10 of the outer ring hole 5, it is possible to prevent the pin 6, fitted in the fitting hole portion 8 with interference, from protruding beyond the raceway surface 2 of the outer ring 1.
[0042]
Since the outer ring hole 5 is formed in the axially central portion of the outer ring 1, the portions of the outer ring 1 on both axial sides of the outer ring hole 5 have sufficient axial wall thicknesses. For this reason, and for the reason that the communication hole portion 9 opens to the raceway surface 2 of the outer ring 1, when the pin 6 is fitted into the outer ring hole 5 with interference, it is possible to prevent the breakage of the outer ring 1 due to the stress applied to the portion of the outer ring 1 around the outer ring hole 5.
[0043]
Since the step 10 of the outer ring hole 5 is tapered so as to be inclined radially inwardly of the outer ring 1 from the inner periphery of the fitting hole portion 8 toward the inner periphery of the communication hole portion 9, it is possible to alleviate the stress applied to the boundary between the inner periphery of the fitting hole portion 8 and the step 10 by the pin 6 fitted in the outer ring hole 5 with interference.
DESCRIPTION OF REFERENCE NUMERALS [0044]
1: outer ring
2- raceway surface
2a^ relief groove
3: needle roller
4: cage
5: outer ring hole
6’· pin
6a^ chamfer
7: flange
8: fitting hole portion
8a: opening
9: communication hole portion
10:step
11: rim
12: pillar
13: pocket
20’· rolling bearing
30: housing
31: surface
32, 33: housing portion
34: fitting recess
35: pin hole dl, d3: diameter dimension d2, d4: outer diameter dimension
Claims (5)
1. A rolling bearing comprising:
an outer ring having a raceway surface, and fitted in a housing;
a plurality of rolling elements configured to be capable of rolling along the raceway surface of the outer ring;
a cage retaining the rolling elements so as to keep the rolling elements circumferentially spaced apart from each other; and a pin fixed to the outer ring, wherein the outer ring has an outer ring hole through which an inner periphery and an outer periphery of the outer ring communicate with each other, and wherein the pin is fixedly fitted in the outer ring hole with interference, and in engagement with the housing while protruding beyond the outer periphery of the outer ring.
2. The rolling bearing according to claim 1, wherein the outer ring hole comprises:
a fitting hole portion which is located on a radially outer side of the outer ring, and in which the pin is fitted;
a communication hole portion communicating with the fitting hole portion; and a step disposed between an inner periphery of the fitting hole portion and an inner periphery of the communication hole portion, the step supporting the pin.
3. The rolling bearing according to claim 2, wherein the step is tapered so as to be inclined radially inwardly of the outer ring from the inner periphery of the fitting hole portion toward the inner periphery of the communication hole portion.
4. The rolling bearing according to claim 2 or 3, wherein the communication hole portion of the outer ring hole opens to the raceway surface of the outer ring.
5. The rolling bearing according to any of claims 2 to 4, wherein the rolling elements comprise needle rollers, and wherein the communication hole portion has a circular cross section, and a diameter dimension smaller than 1/2 of an outer diameter dimension of each of the needle rollers.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016231326A JP2018087604A (en) | 2016-11-29 | 2016-11-29 | Rolling bearing |
| PCT/JP2017/041054 WO2018101038A1 (en) | 2016-11-29 | 2017-11-15 | Roller bearing |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB201907945D0 GB201907945D0 (en) | 2019-07-17 |
| GB2571474A true GB2571474A (en) | 2019-08-28 |
| GB2571474B GB2571474B (en) | 2022-02-09 |
Family
ID=62242174
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1907945.8A Active GB2571474B (en) | 2016-11-29 | 2017-11-15 | Rolling bearing |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2018087604A (en) |
| GB (1) | GB2571474B (en) |
| WO (1) | WO2018101038A1 (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1492819A (en) * | 1965-12-28 | 1967-08-25 | Productions Ind Et De Distrib | Self-adjusting oil wedge bush or the like and its various applications |
| US5288153A (en) * | 1993-01-04 | 1994-02-22 | Delaware Capital Formation, Inc. | Tilting pad journal bearing using directed lubrication |
| JP2001236967A (en) * | 2000-02-25 | 2001-08-31 | Sumitomo Electric Ind Ltd | Separator for solid polymer electrolyte fuel cell |
| JP2002048135A (en) * | 2000-08-04 | 2002-02-15 | Ishikawajima Harima Heavy Ind Co Ltd | Bearing structure |
| JP2005248985A (en) * | 2004-03-01 | 2005-09-15 | Koyo Seiko Co Ltd | Fixing structure for rolling bearing integrated one-way clutch |
| JP2007263194A (en) * | 2006-03-28 | 2007-10-11 | Ntn Corp | Rocking bearing |
| JP2014105721A (en) * | 2012-11-26 | 2014-06-09 | Hikari Dendoki Co Ltd | Table device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5741474Y2 (en) * | 1976-06-11 | 1982-09-11 | ||
| JPS642979Y2 (en) * | 1984-12-07 | 1989-01-25 | ||
| JP2011236967A (en) * | 2010-05-10 | 2011-11-24 | Ihi Corp | Sliding bearing structure and supercharger |
-
2016
- 2016-11-29 JP JP2016231326A patent/JP2018087604A/en active Pending
-
2017
- 2017-11-15 GB GB1907945.8A patent/GB2571474B/en active Active
- 2017-11-15 WO PCT/JP2017/041054 patent/WO2018101038A1/en active Application Filing
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1492819A (en) * | 1965-12-28 | 1967-08-25 | Productions Ind Et De Distrib | Self-adjusting oil wedge bush or the like and its various applications |
| US5288153A (en) * | 1993-01-04 | 1994-02-22 | Delaware Capital Formation, Inc. | Tilting pad journal bearing using directed lubrication |
| JP2001236967A (en) * | 2000-02-25 | 2001-08-31 | Sumitomo Electric Ind Ltd | Separator for solid polymer electrolyte fuel cell |
| JP2002048135A (en) * | 2000-08-04 | 2002-02-15 | Ishikawajima Harima Heavy Ind Co Ltd | Bearing structure |
| JP2005248985A (en) * | 2004-03-01 | 2005-09-15 | Koyo Seiko Co Ltd | Fixing structure for rolling bearing integrated one-way clutch |
| JP2007263194A (en) * | 2006-03-28 | 2007-10-11 | Ntn Corp | Rocking bearing |
| JP2014105721A (en) * | 2012-11-26 | 2014-06-09 | Hikari Dendoki Co Ltd | Table device |
Non-Patent Citations (2)
| Title |
|---|
| Microfilm of the specification and drawing annexed to the requets of the Japanese Utility Model application No 1850571984, 27 June 1986 * |
| Microfilm of the specification and drawings annexed to the request of the Japanese Utility Model No76691/1976 - 16 Dec 1977, page 2, line 3-18, fig 1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2018101038A1 (en) | 2018-06-07 |
| GB201907945D0 (en) | 2019-07-17 |
| GB2571474B (en) | 2022-02-09 |
| JP2018087604A (en) | 2018-06-07 |
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