CA2247831A1 - Rolling-contact bearing - Google Patents
Rolling-contact bearing Download PDFInfo
- Publication number
- CA2247831A1 CA2247831A1 CA002247831A CA2247831A CA2247831A1 CA 2247831 A1 CA2247831 A1 CA 2247831A1 CA 002247831 A CA002247831 A CA 002247831A CA 2247831 A CA2247831 A CA 2247831A CA 2247831 A1 CA2247831 A1 CA 2247831A1
- Authority
- CA
- Canada
- Prior art keywords
- shields
- bearing
- race
- pair
- rolling
- 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.)
- Abandoned
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
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/80—Labyrinth sealings
- F16C33/805—Labyrinth sealings in addition to other sealings, e.g. dirt guards to protect sealings with sealing lips
-
- 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
- F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
- F16C19/04—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
- F16C19/06—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row or balls
-
- 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
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
- F16C33/784—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race
- F16C33/7843—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race with a single annular sealing disc
- F16C33/7853—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race with a single annular sealing disc with one or more sealing lips to contact the inner race
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
- Sealing Of Bearings (AREA)
Abstract
A rolling-contact bearing comprises an inner race 12 forced on to a shaft 6, an outer race 14 carried in a wheel, a pair of seals 18 respectively attached to openings between the inner and outer races at opposite ends thereof, and a shield 20 for shutting off each of the openings. The shields 20 is effective to prevent any deformation of the seals 18 due to collision of ice or gravel, deterioration or loss of packed grease due to entrance of moisture into the bearing, and rusting inside of the bearing.
Description
Rolling-contact bearing Background of the Invention Field of the Invention The present invention relates to a rolling-contact bearing, and more particularly it is intended to prevent entrance of dust, snow, ice, and other foreign matter by shutting off openings between inner and outer races at opposite ends of the bearing with shields so as to be applicable as the bearing for a bogie wheel of a snowmobile, a pulley for auxiliary machines of an automotive engine, etc.
Prior Art As shown in Fig. 4, a snowmobile is designed to move over snow or ice on a crawler or track 3 running endlessly between a driving sprocket 1 and a driven sprocket 2.
Between the driving sprocket 1 and driven sprocket 2, plural idler wheels 4 for guiding the track 3 are disposed.
The driven sprocket 2 and idler wheels 4 are collectively called a bogie wheel.
The bogie wheel 5 is rotatably supported through a rolling-contact bearing 10. That is, as shown in Fig. 5 and Fig. 6, an outer race 14 is press-fitted in a hole 5a of the bogie wheel 5 and is positioned by a stop ring 5b, CA 02247831 1998-09-2~
while an inner race 12 is press-fitted on to an outer circumference 6a of a shaft 6, the shaft 6 and the inner race 12 being fastened together between a washer 8 and a frame 9 with a bolt 7. Reference numeral 7a denotes the head of the bolt 7, and 7b a nut. Reference numeral 16 denotes a series of rolling elements, i.e., steel bolts in this case, assembled between the inner and outer races 12 and 14 of the bearing 10. Reference numeral 17 denotes a cage, and 18 a conventional seal fitted between the inner and outer races 12 and 14.
Since the snowmobile is designed to travel on the snow, the bogie wheel 5 in particular is used in severe environments always exposed to snow and ice, and it is subject to troubles such as deformation of the seals 18 due to collision of pieces of ice and gravel, deterioration or loss of packed grease due to entrance of water into the bearing, rusting of inside of the bearing, and defective rotation due to rust.
It is hence an object of the invention to extend the life of the rolling-contact bearing by solving the problem of short life due to entrance of foreign matter Summary of the Invention A rolling-contact bearing of the invention has a pair of shields fitted to an inner race from both sides thereof CA 02247831 1998-09-2~
in an axial direction, in which each of the shields is L-shaped in a longitudinal section, and is composed of a cylindrical portion for fitting on the outer circumference thereof with the inner circumference of the inner race, and a flange portion radially extending at an outer end of the cylindrical portion.
Opposing ends of the cylindrical portions of the pair of shields may come in contact with each other. However the length of the cylindrical portions of the shields may preferably so set that a clearance may be formed between the opposing ends of the pair of shields in order to define the width (axial dimension) of the bearing integrated with the shields accurately without fluctuation. An outer edge of the flange portion of the shield may preferably be positioned in the vicinity of an inner circumference of the outer races, which results in a kind of labyrinth formed between the outer edge of the shield and an inner circumference of the outer race, enhancing the shielding effect.
An outer end surface of each of the shields may be flush with, or spaced apart inward from an end surface of the outer race as a result of reduction in the wall thickness of the inner race by an amount corresponding to the thickness of the shields. If the width of the inner and outer races is set equal, the outer ends of the shields CA 02247831 1998-09-2~
would protrude from the respective ends of the outer race, causing water dropping from the ends of the outer race to enter the bearing when the outer race is stopped. An increase in weight due to addition of the shields may be advantageously canceled as a result of reduction in the wall thickness of the inner race by an amount corresponding to the thickness of the shields.
The invention is also intended to extend the life of the bearing by integrating the shields with the bearing for a bogie wheel of a snowmobile, and preventing deformation of seal due to collision of ice or gravel, deterioration or loss of packed grease due to entrance of moisture into the bearing, or rusting in the inside of the bearing.
That is, the invention relates to a rolling-contact bearing for bogie wheel of snow mobile, comprising an inner race forced on to a shaft, an outer race carried in the bogie wheel, and a pair of seals for sealing, respectively, openings between both ends of the inner and outer races, wherein a shield for shutting off each of the openings is further provided. With this shield, each of the openings at both ends of the bearing is shut off nearly completely, so that snow or ice can hardly enter the bearing, and pieces of ice and gravel which come flying forward the bearing is shut off by the shield, and therefore deformation or damage of the seals can be prevented.
CA 02247831 1998-09-2~
In a preferred embodiment of the invention, a pair of shields are fitted to the inner race from both sides thereof in an axial direction. Each of the shields is L-shaped in a longitudinal section, and is composed of a cylindrical portion for attachment on the outer circumference thereof to an inner circumference of the inner race and a flange portion radially extending of an outer end of the cylindrical portion.
The length of the cylindrical portions may advantageously be so set that a clearance is formed between opposing ends of the pair of shields. An outer edge of the flange portion may advantageously be positioned in the vicinity of an inner circumference of the outer race.
One of the pair of shields may be disposed between a shoulder of the shaft and an end of the inner race, the other being disposed between a washer and a bolt head.
Brief Description of the Drawings Fig. lA is a longitudinal sectional view of a rolling-contact bearing with shields; Fig. lB is a longitudinal sectional view similar to Fig. lA with the shields dismantled;
Fig. 2 is a longitudinal sectional view showing a modified embodiment;
Fig. 3 is a longitudinal sectional view showing a different embodiment;
Fig. 4 is a perspective view of a snowmobile;
Fig. 5 is a longitudinal sectional view of a bearing portion of a bogie wheel; and Fig. 6 is an enlarged view in part of the bearing shown in Fig. 5.
Description of the Preferred Embodiments Fig. 1 shows an embodiment in which a pair of shields for shutting off both sides of a rolling-contact bearing 10 are integrated with the bearing 10. This bearing 10 is of an outer race rotation type in which an outer race 14 rotates while an inner race 12 is fixed.
The bearing 10 is composed of the inner race 12, the outer race 14, a series of rolling element 16, a cage 17, and a pair of seals 18. The inner race 12 is smaller in width (axial dimension) than the outer race 14 so that when the shields 20 are fitted, the dimension between the outer ends of the shields 20 may be nearly equal to the width of the outer race 14. The width of the inner and outer races 12 and 14 may be set equal; in that case, however, the outer ends of the shields 20 protrude from the respective ends of the outer race 14, causing water dropping from the ends of the outer race 14 to enter the bearing when the outer race 14 is stopped. The inner circumference at both CA 02247831 1998-09-2~
ends of the outer race 14 is gradually expanded from inside to outside in the axial direction. The seal 18 has its outer edge fitted in an annular recess formed in the inner circumference of the outer race 14, an annular seal lip formed in the inner edge of the seal 18 coming in a slidable contact with the inner race 12.
Each shield 20 is an annular member of an L-shaped, or an inverted L-shaped section, press-formed from a steel plate blank, and is composed of a cylindrical portion 22 for attachment at the outer circumference thereof to the inner circumference 12a of the inner race 12, and a flange portion 24 radially extending at an end of the cylindrical portion 22. The length of the cylindrical portion 22 is so set that a proper gap may be formed between the opposing ends 23 when the pair of shields 20 are in position in the bearing 10. An outer end 25 of the flange portion 24 of the shield 20 is positioned in the vicinity of the inner circumference of the outer race 14.
The pair of shields 20 are installed in the inner race 12 of the bearing 10 from both sides thereof in the axial direction, and the bearing 10 together with the shields 20 is mounted on the shaft 6. Therefore, the inner circumference of the cylindrical portions 22 of the shields 20 is the fitting surface with the outer circumference of the shaft. Both ends 23 of the cylindrical portions 22 may CA 02247831 1998-09-2~
come in contact with each other. Alternatively, the length of the cylindrical portions 22 may be such as to form a clearance between the ends 23, which is advantageous in that the width (axial dimension) of the bearing 10 integrated with the shields 20 may be set accurately without fluctuation.
The flange portion 24 of the shield 20 extends in the immediate vicinity of the inner circumference of the outer race 14 to shut off the opening at both ends of the bearing 10 almost completely. Therefore, snow or ice can hardly enter the bearing. Pieces of ice or gravel which come flying forward the bearing are shut off by the shields 20, so that any deformation or damage of the seals 18 can be prevented. Thus, an increase in the life of the bearing 10 is ensured. Moreover, the inner circumference at both ends of the outer race 14 is expanded from inside to outside in the axial direction, so that as the outer race 14 rotates, water and other foreign matter near the end of the outer race 15 are scattered about by the action of centrifugal force.
In a modified embodiment shown in Fig. 2 two shields 30a and 30b are used, in which one shield 30a is disposed between a shoulder 6b of the shaft 6 and an end of the inner race 12, and the other shield 30b is disposed between a washer 8 and the head 7a of a bolt 7. The shield 30b may CA 02247831 1998-09-2~
be disposed between the washer 8 and the end of the inner race 12.
Fig. 3 shows a different embodiment of the invention in which an iron plate pulley 40 is fitted to the outer race 14 of the Fig. 1 bearing 10 with shields 20. As mentioned previously in relation to Fig. 1, entrance of foreign matter from outside can be securely prevented by the combined sealing action of the seals 18 and the shields 20, it is applicable to the field where decrease in the life of the bearing is caused by entrance of dust, such as auxiliary machine pulley of an automotive engine.
According to the invention, therefore, by preventing deformation or damage due to collision of ice or gravel to the seal of the bearing, deterioration or loss of packed grease due to entrance of moisture into the bearing, or rusting inside of the bearing, the life of the bearing can be increased.
Prior Art As shown in Fig. 4, a snowmobile is designed to move over snow or ice on a crawler or track 3 running endlessly between a driving sprocket 1 and a driven sprocket 2.
Between the driving sprocket 1 and driven sprocket 2, plural idler wheels 4 for guiding the track 3 are disposed.
The driven sprocket 2 and idler wheels 4 are collectively called a bogie wheel.
The bogie wheel 5 is rotatably supported through a rolling-contact bearing 10. That is, as shown in Fig. 5 and Fig. 6, an outer race 14 is press-fitted in a hole 5a of the bogie wheel 5 and is positioned by a stop ring 5b, CA 02247831 1998-09-2~
while an inner race 12 is press-fitted on to an outer circumference 6a of a shaft 6, the shaft 6 and the inner race 12 being fastened together between a washer 8 and a frame 9 with a bolt 7. Reference numeral 7a denotes the head of the bolt 7, and 7b a nut. Reference numeral 16 denotes a series of rolling elements, i.e., steel bolts in this case, assembled between the inner and outer races 12 and 14 of the bearing 10. Reference numeral 17 denotes a cage, and 18 a conventional seal fitted between the inner and outer races 12 and 14.
Since the snowmobile is designed to travel on the snow, the bogie wheel 5 in particular is used in severe environments always exposed to snow and ice, and it is subject to troubles such as deformation of the seals 18 due to collision of pieces of ice and gravel, deterioration or loss of packed grease due to entrance of water into the bearing, rusting of inside of the bearing, and defective rotation due to rust.
It is hence an object of the invention to extend the life of the rolling-contact bearing by solving the problem of short life due to entrance of foreign matter Summary of the Invention A rolling-contact bearing of the invention has a pair of shields fitted to an inner race from both sides thereof CA 02247831 1998-09-2~
in an axial direction, in which each of the shields is L-shaped in a longitudinal section, and is composed of a cylindrical portion for fitting on the outer circumference thereof with the inner circumference of the inner race, and a flange portion radially extending at an outer end of the cylindrical portion.
Opposing ends of the cylindrical portions of the pair of shields may come in contact with each other. However the length of the cylindrical portions of the shields may preferably so set that a clearance may be formed between the opposing ends of the pair of shields in order to define the width (axial dimension) of the bearing integrated with the shields accurately without fluctuation. An outer edge of the flange portion of the shield may preferably be positioned in the vicinity of an inner circumference of the outer races, which results in a kind of labyrinth formed between the outer edge of the shield and an inner circumference of the outer race, enhancing the shielding effect.
An outer end surface of each of the shields may be flush with, or spaced apart inward from an end surface of the outer race as a result of reduction in the wall thickness of the inner race by an amount corresponding to the thickness of the shields. If the width of the inner and outer races is set equal, the outer ends of the shields CA 02247831 1998-09-2~
would protrude from the respective ends of the outer race, causing water dropping from the ends of the outer race to enter the bearing when the outer race is stopped. An increase in weight due to addition of the shields may be advantageously canceled as a result of reduction in the wall thickness of the inner race by an amount corresponding to the thickness of the shields.
The invention is also intended to extend the life of the bearing by integrating the shields with the bearing for a bogie wheel of a snowmobile, and preventing deformation of seal due to collision of ice or gravel, deterioration or loss of packed grease due to entrance of moisture into the bearing, or rusting in the inside of the bearing.
That is, the invention relates to a rolling-contact bearing for bogie wheel of snow mobile, comprising an inner race forced on to a shaft, an outer race carried in the bogie wheel, and a pair of seals for sealing, respectively, openings between both ends of the inner and outer races, wherein a shield for shutting off each of the openings is further provided. With this shield, each of the openings at both ends of the bearing is shut off nearly completely, so that snow or ice can hardly enter the bearing, and pieces of ice and gravel which come flying forward the bearing is shut off by the shield, and therefore deformation or damage of the seals can be prevented.
CA 02247831 1998-09-2~
In a preferred embodiment of the invention, a pair of shields are fitted to the inner race from both sides thereof in an axial direction. Each of the shields is L-shaped in a longitudinal section, and is composed of a cylindrical portion for attachment on the outer circumference thereof to an inner circumference of the inner race and a flange portion radially extending of an outer end of the cylindrical portion.
The length of the cylindrical portions may advantageously be so set that a clearance is formed between opposing ends of the pair of shields. An outer edge of the flange portion may advantageously be positioned in the vicinity of an inner circumference of the outer race.
One of the pair of shields may be disposed between a shoulder of the shaft and an end of the inner race, the other being disposed between a washer and a bolt head.
Brief Description of the Drawings Fig. lA is a longitudinal sectional view of a rolling-contact bearing with shields; Fig. lB is a longitudinal sectional view similar to Fig. lA with the shields dismantled;
Fig. 2 is a longitudinal sectional view showing a modified embodiment;
Fig. 3 is a longitudinal sectional view showing a different embodiment;
Fig. 4 is a perspective view of a snowmobile;
Fig. 5 is a longitudinal sectional view of a bearing portion of a bogie wheel; and Fig. 6 is an enlarged view in part of the bearing shown in Fig. 5.
Description of the Preferred Embodiments Fig. 1 shows an embodiment in which a pair of shields for shutting off both sides of a rolling-contact bearing 10 are integrated with the bearing 10. This bearing 10 is of an outer race rotation type in which an outer race 14 rotates while an inner race 12 is fixed.
The bearing 10 is composed of the inner race 12, the outer race 14, a series of rolling element 16, a cage 17, and a pair of seals 18. The inner race 12 is smaller in width (axial dimension) than the outer race 14 so that when the shields 20 are fitted, the dimension between the outer ends of the shields 20 may be nearly equal to the width of the outer race 14. The width of the inner and outer races 12 and 14 may be set equal; in that case, however, the outer ends of the shields 20 protrude from the respective ends of the outer race 14, causing water dropping from the ends of the outer race 14 to enter the bearing when the outer race 14 is stopped. The inner circumference at both CA 02247831 1998-09-2~
ends of the outer race 14 is gradually expanded from inside to outside in the axial direction. The seal 18 has its outer edge fitted in an annular recess formed in the inner circumference of the outer race 14, an annular seal lip formed in the inner edge of the seal 18 coming in a slidable contact with the inner race 12.
Each shield 20 is an annular member of an L-shaped, or an inverted L-shaped section, press-formed from a steel plate blank, and is composed of a cylindrical portion 22 for attachment at the outer circumference thereof to the inner circumference 12a of the inner race 12, and a flange portion 24 radially extending at an end of the cylindrical portion 22. The length of the cylindrical portion 22 is so set that a proper gap may be formed between the opposing ends 23 when the pair of shields 20 are in position in the bearing 10. An outer end 25 of the flange portion 24 of the shield 20 is positioned in the vicinity of the inner circumference of the outer race 14.
The pair of shields 20 are installed in the inner race 12 of the bearing 10 from both sides thereof in the axial direction, and the bearing 10 together with the shields 20 is mounted on the shaft 6. Therefore, the inner circumference of the cylindrical portions 22 of the shields 20 is the fitting surface with the outer circumference of the shaft. Both ends 23 of the cylindrical portions 22 may CA 02247831 1998-09-2~
come in contact with each other. Alternatively, the length of the cylindrical portions 22 may be such as to form a clearance between the ends 23, which is advantageous in that the width (axial dimension) of the bearing 10 integrated with the shields 20 may be set accurately without fluctuation.
The flange portion 24 of the shield 20 extends in the immediate vicinity of the inner circumference of the outer race 14 to shut off the opening at both ends of the bearing 10 almost completely. Therefore, snow or ice can hardly enter the bearing. Pieces of ice or gravel which come flying forward the bearing are shut off by the shields 20, so that any deformation or damage of the seals 18 can be prevented. Thus, an increase in the life of the bearing 10 is ensured. Moreover, the inner circumference at both ends of the outer race 14 is expanded from inside to outside in the axial direction, so that as the outer race 14 rotates, water and other foreign matter near the end of the outer race 15 are scattered about by the action of centrifugal force.
In a modified embodiment shown in Fig. 2 two shields 30a and 30b are used, in which one shield 30a is disposed between a shoulder 6b of the shaft 6 and an end of the inner race 12, and the other shield 30b is disposed between a washer 8 and the head 7a of a bolt 7. The shield 30b may CA 02247831 1998-09-2~
be disposed between the washer 8 and the end of the inner race 12.
Fig. 3 shows a different embodiment of the invention in which an iron plate pulley 40 is fitted to the outer race 14 of the Fig. 1 bearing 10 with shields 20. As mentioned previously in relation to Fig. 1, entrance of foreign matter from outside can be securely prevented by the combined sealing action of the seals 18 and the shields 20, it is applicable to the field where decrease in the life of the bearing is caused by entrance of dust, such as auxiliary machine pulley of an automotive engine.
According to the invention, therefore, by preventing deformation or damage due to collision of ice or gravel to the seal of the bearing, deterioration or loss of packed grease due to entrance of moisture into the bearing, or rusting inside of the bearing, the life of the bearing can be increased.
Claims (7)
1. A rolling-contact bearing having a pair of shields fitted to an inner race from both sides thereof in an axial direction, wherein each of the shields is L-shaped in a longitudinal section, and is composed of a cylindrical portion for fitting on the outer circumference thereof with the inner circumference of the inner race, and a flange portion radially extending at an outer end of the cylindrical portion.
2. The bearing of claim 1, wherein the length of the cylindrical portions of the pair of shields is so set that a clearance may be formed between opposing ends of the pair of shields, and an outer edge of the flange portion is positioned in the vicinity of an inner circumference of the outer race.
3. The bearing of claim 1, wherein an outer end surface of each of the shields is flush with or spaced apart inward from an end surface of the outer race.
4. A rolling-contact bearing for a bogie wheel of a snowmobile, comprising an inner race forced on to a shaft, an outer race carried in the bogie wheel, and fitting a pair of seals for sealing, respectively, openings between both ends of the inner and outer races, wherein a shield for shutting off each of the openings is further provided.
5. The bearing of claim 4, wherein a pair of shields are fitted to the inner race from both sides thereof in an axial direction, each of the shields is L-shaped in a longitudinal section, and is composed of a cylindrical portion for fitting on the outer circumference thereof with an inner circumference of the inner race, and a flange portion radially extending at an outer end of the cylindrical portion.
6. The bearing of claim 5, wherein the length of the cylindrical portions is so set that a clearance may be formed between opposing ends of the pair of shields, and an outer edge of the flange portion is positioned in the vicinity of an inner circumference of the outer race.
7. The bearing of claim 5, wherein one of the pair of shields is disposed between a shoulder of the shaft and an end of the inner race, and the other is disposed between a washer and the bolt head.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9-262251 | 1997-09-26 | ||
| JP9262251A JPH11101251A (en) | 1997-09-26 | 1997-09-26 | Rolling bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2247831A1 true CA2247831A1 (en) | 1999-03-26 |
Family
ID=17373187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002247831A Abandoned CA2247831A1 (en) | 1997-09-26 | 1998-09-25 | Rolling-contact bearing |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPH11101251A (en) |
| CA (1) | CA2247831A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6464399B1 (en) * | 1999-12-27 | 2002-10-15 | The Timken Company | Hub assembly for automotive vehicles |
| JP4747418B2 (en) * | 2001-01-15 | 2011-08-17 | 日本精工株式会社 | Sealed rolling bearing |
| KR100687009B1 (en) | 2005-06-23 | 2007-02-26 | 세메스 주식회사 | Shaft apparatus for substrate transportation |
| US10024364B2 (en) * | 2016-01-12 | 2018-07-17 | Schaeffler Technologies AG & Co. KG | Integrated plastic shield bearing assembly |
-
1997
- 1997-09-26 JP JP9262251A patent/JPH11101251A/en not_active Withdrawn
-
1998
- 1998-09-25 CA CA002247831A patent/CA2247831A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| JPH11101251A (en) | 1999-04-13 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Dead |