WO2006088044A1 - オイル潤滑式ころ軸受装置 - Google Patents
オイル潤滑式ころ軸受装置 Download PDFInfo
- Publication number
- WO2006088044A1 WO2006088044A1 PCT/JP2006/302622 JP2006302622W WO2006088044A1 WO 2006088044 A1 WO2006088044 A1 WO 2006088044A1 JP 2006302622 W JP2006302622 W JP 2006302622W WO 2006088044 A1 WO2006088044 A1 WO 2006088044A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- roller
- oil
- end surface
- recess
- bearing device
- Prior art date
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
- 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
- F16C19/34—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 for both radial and axial load
- F16C19/36—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 for both radial and axial load with a single row of rollers
- F16C19/364—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 for both radial and axial load with a single row of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone
-
- 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
- F16C33/66—Special parts or details in view of lubrication
-
- 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
- F16C33/34—Rollers; 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
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/34—Rollers; Needles
- F16C33/36—Rollers; Needles with bearing-surfaces other than cylindrical, e.g. tapered; with grooves in the bearing surfaces
- F16C33/366—Tapered rollers, i.e. rollers generally shaped as truncated cones
-
- 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
- F16C33/66—Special parts or details in view of lubrication
- F16C33/6637—Special parts or details in view of lubrication with liquid lubricant
- F16C33/6681—Details of distribution or circulation inside the bearing, e.g. grooves on the cage or passages in the rolling elements
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S384/00—Bearings
- Y10S384/90—Cooling or heating
- Y10S384/907—Bearing material or solid lubricant
Definitions
- the present invention relates to an oil lubricated roller bearing device.
- the configuration of the roller bearing device includes an inner ring 1, an outer ring 2, and a roller 3 as a rolling element provided between the inner and outer rings so as to be freely rotatable.
- 1 is formed with a flange 4 that contacts the end face (large end face) of the roller 3 and guides the rolling of the roller 3.
- a recess 5 is formed in the center of the end face of the roller 3.
- the concave portion 5 is formed from both viewpoints of the production surface of the roller 3 and the performance surface when the bearing device is used. In other words, on the manufacturing surface, if the roller end face is polished without forming the recess 5 in advance, the end face is not polished by the mortar at the center position, leaving a minute convex part at the center position.
- the removal work of the minute convex part is necessary after that. Further, if the minute convex portion remains, it becomes difficult to determine the roller end surface as the measurement reference surface, and it becomes difficult to measure the dimension of the roller 3 in the axial direction. However, these defects can be eliminated by forming the recess 5 in advance before polishing.
- the recess 5 is an oil reservoir, and is considered necessary for improving the lubrication performance.
- conventional roller bearing devices include the following configurations in order to improve the lubrication performance.
- the conventional common sense that the oil accumulated in the recesses contributes to the lubrication of the roller end faces and flanges and enhances the lubrication performance is that it does not hold at all when the oil decreases to a small amount. There was found.
- the roller bearing device described in Japanese Patent Application Laid-Open No. 2004-176771 and Japanese Utility Model Laid-Open No. 7-14222 has a small amount of oil that oozes out the solid lubricant force. Is not supplied to the buttocks.
- a step is formed between the end surface of the roller body and the end surface of the solid lubricant, so that the oil has its surface tension and adhesive strength across the step portion. Will be held in place.
- the solid lubricant is in contact with the collar portion and can improve the lubricating effect in the initial stage. As a result, the amount of lubrication decreases and the lubrication performance cannot be maintained over a long period of time. As a result of wear of the solid lubricant, a dent is formed on the roller end face, and the oil is retained in the dent by surface tension and adhesive force as in the case of Japanese Patent Application Laid-Open No. 2004-176771.
- the foreign matter may damage the raceway surface or cause resistance on the raceway surface. It has the problems of increasing the size, shortening the service life, and lowering the lubrication performance.
- the present invention has been made in view of the above-mentioned problems and overturned conventional common sense, and is an oil-lubricated roller bearing capable of improving the lubrication performance without accumulating oil on the roller end face side.
- An object is to provide an apparatus.
- An oil-lubricated roller bearing device for achieving the above object includes an inner ring, an outer ring, and a roller provided between the inner and outer rings so as to be able to roll between the inner ring and the outer ring.
- the oil lubricated roller bearing device at least one of the flanges is formed so as to contact the end face of the roller and guide the rolling of the roller, and a recess is formed at the center of the end face of the roller.
- a plug member for preventing oil intrusion is embedded in the concave portion of the roller.
- the oil moves along the end face of the roller by the rotation of the roller so that the oil does not exist in the recess formed in the end face of the roller by the plug member for preventing oil intrusion.
- the lubricating performance can be improved. Therefore, under low lubrication conditions where the amount of oil has decreased to a small amount, or under low lubrication conditions where the amount of oil has been intentionally reduced to a small amount.
- the friction torque at the time of rotation can be reduced and the rotation torque can be stabilized.
- seizure occurs between the buttocks and the end surface.
- foreign matter such as wear powder does not stay in the recess, it is possible to prevent foreign matter that has accumulated and hardened from entering between the rollers and the inner ring and the outer ring.
- the oil can flow along the end face of the roller, and the oil can be supplied between the end face of the roller and the flange portion. Therefore, the friction torque can be reduced even immediately after the start of rotation.
- roller end surface is polished before embedding the plug member in the roller manufacturing process, a recess is formed in the center of the roller end surface, so that polishing is unnecessary at the center position of the end surface. it can. That is, the required area for polishing is reduced, and the minute convex portion is not left at the center position of the roller end face. Further, the work of removing the minute convex portion after polishing is not required. Before embedding the stopper member in the roller end face, there is no minute convex part, so the end face with the concave part formed in advance and polished can be used as the measurement reference surface, making it easy to measure the axial dimension of the roller. .
- the concave portion is formed so that an opening edge of the concave portion does not overlap the flange portion.
- the plug member is preferably embedded in the recess so as not to come into contact with the flange. According to this configuration, it is possible to prevent the plug member from coming into contact with the collar portion and deteriorating the lubrication performance. Furthermore, the outer peripheral edge portion of the end surface of the polished roller can be appropriately brought into contact with the flange portion with oil interposed therebetween.
- the outer end surface of the plug member is preferably formed so as to protrude beyond the end surface of the roller in which the concave portion is formed. According to this, even when the rotation of the roller is stopped, the oil naturally flows along the end surface at the outer end surface of the plug member, and the oil is supplied between the roller end surface and the flange portion. It becomes possible. Therefore, the friction torque can be reduced even immediately after the start of rotation.
- the roller can be a tapered roller.
- FIG. 1 is a longitudinal sectional view showing a roller bearing device according to an embodiment of the present invention.
- FIG. 2 is a cross-sectional view of an essential part showing a plug member attached to a recess.
- FIG. 3 is a cross-sectional view of the main part showing a modification of the plug member.
- FIG. 4 is a cross-sectional view of an essential part showing still another modification of the plug member.
- FIG. 5 is a longitudinal sectional view showing a conventional roller bearing device.
- FIG. 6 is a cross-sectional view showing a main part of FIG.
- FIG. 1 is a longitudinal sectional view showing an oil lubricated roller bearing device according to an embodiment of the present invention.
- This bearing device includes an inner ring 1, an outer ring 2, and rolling elements provided between the inner ring 1 and the outer ring 2 so as to be capable of rolling.
- the rolling element is composed of a plurality of tapered rollers 3 to form a tapered roller bearing.
- the bearing device is an oil lubrication type in which a lubricant (oil) is interposed between the inner ring 1 and the outer ring 2 and the outer ring 2 and 3 to reduce the friction torque during rotation. Roller 3 is held by cage 10.
- the inner ring 1 has a tapered raceway surface 11 formed on the outer peripheral surface thereof, and flanges 4 and 14 are formed at both ends of the raceway surface 11 in the axial direction. Then, the large end surface 7 which is the larger diameter side of the roller 3 comes into contact with the flange 4 on the large diameter side, and the rolling of the roller 3 is guided. Specifically, at the outer peripheral side of the inner ring 1, the raceway surface 11 that contacts the outer peripheral surface of the roller 3 and the inner contact of the large-diameter flange 4 that projects radially outward from one end of the raceway surface 11 are provided.
- a circumferential groove is formed by the contact surface 4a and the inner side surface 14a of the small-diameter flange 14 projecting radially outward from the other end side of the raceway surface 11.
- the inner contact surface 4 a of the large-diameter flange 4 is in contact with the peripheral edge of the large end surface 7 of the roller 3.
- the outer ring 2 is provided radially outward of the inner ring 1, and a raceway surface 12 that is in contact with the outer peripheral surface of the roller 3 is formed on the inner peripheral surface thereof.
- a recess 5 is formed at the center of the end surface of the roller 3 on the side in contact with the flange 4 of the inner ring 1. That is, the recess 5 is formed in the center of the large end surface 7 of the roller 3.
- the recess 5 is formed in the large end surface 7 with the center of the axis of the roller 3 being the center when the roller 3 is cut.
- the large end surface 7 of the roller 3 is finished by polishing the peripheral edge portion radially outward from the concave portion 5, and a part (part) of the polished large end surface 7 is connected to the flange portion 4 of the inner ring 1. Make sliding contact. That is, polishing can be omitted at the center of the large end surface 7 where the recess 5 is formed.
- the recess 5 is a circle. It is formed as a shaped depression and the depth dimension is smaller than the radius.
- a plug member 6 for preventing oil intrusion is attached to the recess 5.
- the plug member 6 is a member that prevents oil from flowing into (entering into) the recess 5, and is embedded in the recess 5.
- the plug member 6 can be made of resin such as urethane resin or metal, but it is not hard and is difficult to come off from the recess 5, and things (hard to peel off) are hard to fall off. ! /, Should be attached by means.
- the stopper member 6 may be configured to be fixed to the core 3 by another stopper member (not shown) such as a screw pin, but the stopper member 6 is fitted into the recess 5 without using such a stopper member.
- the configuration described above is preferable in terms of manufacturing simplicity.
- the plug member 6 when the plug member 6 is made of resin, the plug member 6 is supplied with the molten resin in the melted state 5 to the recess 5 of the roller 3 with respect to the finished polishing 3.
- the plug member 6 may be formed by curing the resin.
- the side peripheral surface 15 of the plug member 6 is in close contact with the inner peripheral surface 5 a of the recess 5, and the inner end surface 16 of the plug member 6 is in close contact with the bottom surface 5 b of the recess 5.
- the inner peripheral surface 5a of the recess 5 formed in the roller 3 is a tapered peripheral surface whose diameter increases toward the outside (from the back side toward the opening edge 8 side). ing.
- the inner peripheral surface 5a is formed into a linear cylindrical shape in a direction parallel to the axis of the roller 3, or conversely, a tapered peripheral surface (not shown) whose diameter decreases outward. As a result, the plug member 6 is less likely to fall out of the recess 5.
- the concave portion 5 formed on the large end surface 7 of the roller 3 is formed so that the opening edge 8 of the concave portion 5 does not overlap the inner contact surface 4a of the flange portion 4. ing.
- the plug member 6 is attached to the recess 5 so that the outer end surface 9 thereof does not come into contact with the inner contact surface 4 a of the flange 4. That is, the concave portion 5 of the roller 3 is disposed on the radially outer side than the inner contact surface 4a of the flange portion 4 of the inner ring 1.
- the stopper member 6 By providing the stopper member 6 in the recess 5 formed in the large end surface 7 of the roller 3, the oil does not stagnate in the recess 5, so that the oil rotates along the large end surface 7 of the roller 3 due to the rotation of the roller 3. Can move. That is, oil is supplied between the large end surface 7 of the roller 3 and the inner abutting surface 4a of the flange portion 4, and the lubricating performance can be improved. Accordingly, the frictional torque during rotation can be reduced, the rotational torque can be stabilized, and seizure occurs between the flange 4 and the large end surface 7 of 3. Further, foreign matter such as wear powder can be prevented from staying in the recess 5.
- FIG. 3 is a cross-sectional view showing a modified example of the plug member 6.
- the outer end surface 9 of the plug member 6 is formed so as to protrude from the large end surface 7 of the roller 3 in which the recess 5 is formed, and the outer end surface 9 is spherical. It is formed to have a convex shape by (curved surface). 2 has the same outer shape (outer peripheral shape) of the outer end surface 9 as the shape of the opening edge 8 of the recess 5.
- the plug member 6 shown in FIG. 3 includes a main body portion 6a embedded in the concave portion 5 and a lid portion 6b having a contour shape (peripheral shape) larger than the shape of the opening edge 8 of the concave portion 5.
- the contour shape (diameter) of the lid portion 6b which is a portion protruding from the large end surface 7 of the roller 3, is made larger than the shape (diameter) of the opening edge 8 of the recess portion 5, and the lid portion 6b completely covers the recess 5.
- the shape of the outer end surface 9 of the plug member 6 can be made to be a shape in which oil and wear powder do not easily accumulate, so that the oil can be moved along the outer end surface 9 of the plug member 6 and the large end surface 7 of 3. It is shaped. Therefore, as shown in FIG. 4 showing still another modified example of the plug member 6, the plug member 6 can be formed as a curved surface (spherical surface) in which the outer end surface 9 is slightly recessed. This is the stopper The outer end surface 9 of the material 6 is recessed from the large end surface 7 of the roller 3, and according to this, the outer end surface 9 of the plug member 6 can be prevented from coming into contact with the cage 10.
- the oil lubricated roller bearing device of the present invention is not limited to the illustrated form, and may be of other forms within the scope of the present invention.
- the outer end surface 9 of the plug member 6 forms a smooth one surface with the large end surface 7 of the roller 3 (not shown) except that it is more convex or concave than the large end surface 7 of the roller 3. You may do it.
- the inner ring 1 is formed with the flange 4 for guiding the roller 3, but the inner ring 1 is not limited thereto, and the inner ring 1 may be formed with the flange 4 on the outer ring 2 side. As long as at least one of the outer ring 2 and the collar 4 are formed.
- roller bearing devices such as a cylindrical roller bearing device in which the roller 3 is formed in a columnar shape or a self-aligning roller bearing may be used.
- the recess 5 is not limited to the end face on one side of the roller 3, but the stopper member 6 is attached to the recess 5 on both end faces which may be formed on the other end face.
- roller bearing device configured as described above, for example, a device in which a pinion shaft provided with a pinion gear at one end is supported in a housing via a rolling bearing device.
- this rolling bearing device can be a tapered roller bearing device according to the above-described embodiments.
- a pinion shaft support device for a vehicle there is a pinion shaft support device for a vehicle.
- a differential gear device in which the pinion shaft is a drive gear and the housing is a differential case.
- a transaxle device including the differential gear device and the transmission device.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP06713763A EP1852619B1 (en) | 2005-02-15 | 2006-02-15 | Oil lubricating roller bearing device |
US11/883,771 US7874736B2 (en) | 2005-02-15 | 2006-02-15 | Oil-lubricated roller bearing assembly |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005037348A JP4747598B2 (ja) | 2005-02-15 | 2005-02-15 | オイル潤滑式ころ軸受装置 |
JP2005-037348 | 2005-02-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006088044A1 true WO2006088044A1 (ja) | 2006-08-24 |
Family
ID=36916448
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2006/302622 WO2006088044A1 (ja) | 2005-02-15 | 2006-02-15 | オイル潤滑式ころ軸受装置 |
Country Status (6)
Country | Link |
---|---|
US (1) | US7874736B2 (ja) |
EP (1) | EP1852619B1 (ja) |
JP (1) | JP4747598B2 (ja) |
KR (1) | KR20070110001A (ja) |
CN (1) | CN100562671C (ja) |
WO (1) | WO2006088044A1 (ja) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008106330A1 (en) * | 2007-02-28 | 2008-09-04 | The Timken Company | Bi-directional tapered roller bearing assembly with improved wear resistance |
CN102287450B (zh) * | 2011-08-05 | 2012-10-03 | 福建省永安轴承有限责任公司 | 结构优化的长寿命圆锥滚子轴承 |
DE102014104563B4 (de) * | 2014-04-01 | 2022-04-21 | Thyssenkrupp Ag | Wälzlager |
DE102014019767B3 (de) | 2014-04-01 | 2020-07-09 | Thyssenkrupp Ag | Wälzlager |
JP6736875B2 (ja) * | 2015-12-17 | 2020-08-05 | 株式会社ジェイテクト | 円すいころ軸受 |
JP2017187148A (ja) * | 2016-04-08 | 2017-10-12 | 日本精工株式会社 | 円錐ころ軸受用転動体及び円錐ころ軸受 |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56131021U (ja) * | 1980-03-07 | 1981-10-05 | ||
JPS63225729A (ja) * | 1987-03-11 | 1988-09-20 | Nippon Thompson Co Ltd | 低摩擦ころ |
JPH0575520U (ja) * | 1992-03-19 | 1993-10-15 | 光洋精工株式会社 | 円錐ころ軸受 |
JPH0714222U (ja) | 1993-08-23 | 1995-03-10 | エヌティエヌ株式会社 | ころ軸受 |
JP2002061655A (ja) | 2000-08-16 | 2002-02-28 | Ntn Corp | 円すいころ軸受 |
JP2003156056A (ja) * | 2001-11-20 | 2003-05-30 | Nsk Ltd | ころ軸受 |
JP2004176771A (ja) | 2002-11-26 | 2004-06-24 | Nachi Fujikoshi Corp | ころの製造方法及び円すいころ |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB304992A (en) * | 1928-06-29 | 1929-01-31 | Timken Roller Bearing Co | Improvements relating to roller bearings |
US2215701A (en) * | 1936-03-03 | 1940-09-24 | Henselman Otto | Bearing roller |
US2231350A (en) * | 1940-06-17 | 1941-02-11 | Timken Roller Bearing Co | Roller bearing |
JPS54180858U (ja) * | 1978-06-13 | 1979-12-21 | ||
JPS56131021A (en) * | 1980-03-18 | 1981-10-14 | Sadao Nojima | Manufacture of connection bolt for building |
DE4027890A1 (de) * | 1990-09-03 | 1992-03-05 | Star Gmbh | Rollenlageranordnung - rolle mit verdickten axialen enden |
JPH07145818A (ja) * | 1993-11-24 | 1995-06-06 | Nippon Seiko Kk | ころ軸受 |
JP2003120687A (ja) * | 2001-10-19 | 2003-04-23 | Nsk Ltd | 円すいころ軸受およびその加工方法 |
-
2005
- 2005-02-15 JP JP2005037348A patent/JP4747598B2/ja not_active Expired - Fee Related
-
2006
- 2006-02-15 KR KR1020077016564A patent/KR20070110001A/ko not_active Application Discontinuation
- 2006-02-15 US US11/883,771 patent/US7874736B2/en not_active Expired - Fee Related
- 2006-02-15 CN CNB2006800045379A patent/CN100562671C/zh not_active Expired - Fee Related
- 2006-02-15 WO PCT/JP2006/302622 patent/WO2006088044A1/ja active Application Filing
- 2006-02-15 EP EP06713763A patent/EP1852619B1/en not_active Not-in-force
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56131021U (ja) * | 1980-03-07 | 1981-10-05 | ||
JPS63225729A (ja) * | 1987-03-11 | 1988-09-20 | Nippon Thompson Co Ltd | 低摩擦ころ |
JPH0575520U (ja) * | 1992-03-19 | 1993-10-15 | 光洋精工株式会社 | 円錐ころ軸受 |
JPH0714222U (ja) | 1993-08-23 | 1995-03-10 | エヌティエヌ株式会社 | ころ軸受 |
JP2002061655A (ja) | 2000-08-16 | 2002-02-28 | Ntn Corp | 円すいころ軸受 |
JP2003156056A (ja) * | 2001-11-20 | 2003-05-30 | Nsk Ltd | ころ軸受 |
JP2004176771A (ja) | 2002-11-26 | 2004-06-24 | Nachi Fujikoshi Corp | ころの製造方法及び円すいころ |
Non-Patent Citations (1)
Title |
---|
See also references of EP1852619A4 * |
Also Published As
Publication number | Publication date |
---|---|
JP4747598B2 (ja) | 2011-08-17 |
US7874736B2 (en) | 2011-01-25 |
CN101115932A (zh) | 2008-01-30 |
EP1852619A4 (en) | 2011-01-26 |
US20090123103A1 (en) | 2009-05-14 |
EP1852619A1 (en) | 2007-11-07 |
EP1852619B1 (en) | 2012-06-27 |
CN100562671C (zh) | 2009-11-25 |
KR20070110001A (ko) | 2007-11-15 |
JP2006226306A (ja) | 2006-08-31 |
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