CN202579643U - Rolling bearing - Google Patents
Rolling bearing Download PDFInfo
- Publication number
- CN202579643U CN202579643U CN 201220123824 CN201220123824U CN202579643U CN 202579643 U CN202579643 U CN 202579643U CN 201220123824 CN201220123824 CN 201220123824 CN 201220123824 U CN201220123824 U CN 201220123824U CN 202579643 U CN202579643 U CN 202579643U
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- China
- Prior art keywords
- mentioned
- sealing
- sealing lip
- roller surface
- 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.)
- Expired - Fee Related
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Classifications
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- 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
- F16C33/7869—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted with a cylindrical portion to the inner surface of the outer race and having a radial portion extending inward
- F16C33/7873—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted with a cylindrical portion to the inner surface of the outer race and having a radial portion extending inward with a single sealing ring of generally L-shaped cross-section
- F16C33/7876—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted with a cylindrical portion to the inner surface of the outer race and having a radial portion extending inward with a single sealing ring of generally L-shaped cross-section with sealing lips
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- 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
- F16C33/7816—Details of the sealing or parts thereof, e.g. geometry, material
- F16C33/782—Details of the sealing or parts thereof, e.g. geometry, material of the sealing region
-
- 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
- F16C19/14—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load
- F16C19/18—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls
- F16C19/181—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact
- F16C19/183—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles
- F16C19/184—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles in O-arrangement
- F16C19/186—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles in O-arrangement with three raceways provided integrally on parts other than race rings, e.g. third generation hubs
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- 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
- F16C2326/00—Articles relating to transporting
- F16C2326/01—Parts of vehicles in general
- F16C2326/02—Wheel hubs or castors
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
- Sealing Of Bearings (AREA)
Abstract
The utility model provides a rolling bearing which further improves the sealing performance of the inner part of the bearing and does not adsorb a sealing lip to a part to be slipped. The rolling bearing is provided with an outer ring, an inner shaft, rolling path grooves, a first rolling bead, a second rolling bead and a sealing device, wherein the first rolling bead and the second rolling bead are arranged between the rolling path grooves; the sealing device is arranged between the rolling path groove and the rolling path groove and is used for sealing the rolling path groove and the rolling path groove; the sealing device is provided with an elastic part; the elastic part is provided with a base part and an annular sealing lip; the base part is embedded into a peripheral face of an axial end part on the periphery of a rolling path face side of the outer ring; the annular sealing lip extends from the base part to a rough radial direction and can slip on the peripheral face of the axial end part on the periphery of a rolling path face side of the inner shaft; the inner shaft is provided with a convex part which is arranged at the position abutted against the sealing lip and is convex due to a sealing side formed by the sealing device; the convex part is at least provided with a communication hole; and the communication hole is used for communicating the sealing side and an outer side which is opposite to the sealing side under the condition that the sealing lip is abutted against the convex part.
Description
Technical field
The utility model relates to rolling bearing.
Background technique
The rolling bearing of wheel that is used for vehicle is because receive the influence of muddy water sometimes, so utilize the seal arrangement that is made up of elastic member with sealing between the outside of bearing and the inside.For seal arrangement, the embedded inner peripheral surface that is fixed in the outer ring of fixed side of the base portion of elastic member slides to the axial end face of the extended sealing lip of the inner ring of rotary side at inner ring from base portion.
For this bearing, have bearing necessity from saving viewpoint of energy with low moment of torsion rotation, reduce through the sealing lip attenuation being realized moment of torsion.
Yet, at the vehicle that possesses this bearing from the operating condition to the halted state, thereby under the situation that the temperature in the seal space of bearing descends; Pressure in the seal space of bearing is pressed with respect to atmosphere outside and is become negative pressure; Because this negative pressure, cause sealing lip to be adsorbed in slip surface and rotation torque increases, perhaps the front end inordinate wear of sealing lip and cause the lifetime of sealing lip; Perhaps heat up, abnormal sound perhaps occurs.
Therefore; There is a kind of bearing; This bearing is through being provided with intercommunicating pore at sealing lip; Thereby the pressure in seal space is pressed with respect to atmosphere outside and is become under the situation of negative pressure, and the air that is positioned at outer side can move to the sealed sides of sealing lip through intercommunicating pore, can alleviate the inside and outside draught head (patent documentation 1) of seal arrangement.
Patent documentation 1: Japan special table 2008-533413 communique
Yet, because above-mentioned bearing is provided with intercommunicating pore at sealing lip, so muddy water etc. can invade inside from the outside of bearing.
Summary of the invention
The utility model produces in order to solve such problem, and its purpose is to provide the inner sealing of a kind of bearing higher, and sealing lip is not adsorbed in by the rolling bearing of slide member.
The structural characteristic of the rolling bearing of technological scheme 1 is to possess:
First raceway member, this first raceway member have the roller surface of fixed side, i.e. first roller surface;
Second raceway member, this second raceway member have the roller surface of rotary side, i.e. second roller surface;
Rolling element, this rolling element are disposed between above-mentioned first roller surface and above-mentioned second roller surface; And
Seal arrangement, sealing device are disposed between above-mentioned first raceway member and above-mentioned second raceway member, with above-mentioned first roller surface and the sealing of above-mentioned second roller surface,
Above-mentioned seal arrangement has elastic member, and this elastic member has:
Base portion, this base portion is chimeric to be installed on the side face of axial end portion of the roller surface side periphery of above-mentioned first raceway member, and
The sealing lip of ring-type, the sealing lip of this ring-type, and slide at the side face of the axial end portion of the roller surface side periphery of above-mentioned second raceway member along roughly radially extending from above-mentioned base portion,
Above-mentioned second raceway member has protuberance, and this protuberance is outstanding to the sealed sides that forms owing to above-mentioned seal arrangement of the position of above-mentioned sealing lip institute butt,
Raised part is formed with at least one intercommunicating pore, and this intercommunicating pore is communicated with above-mentioned sealed sides with the outer side of above-mentioned sealed sides opposition side under the situation of above-mentioned sealing lip and raised part butt.
Rolling bearing according to technological scheme 1; For example; Because possessing the machineries such as vehicle of sealing device stops after running; Make the air pressure of sealed sides of sealing lip diminish, even sealing lip receives from outer side towards the power of sealed sides and to the sealed sides distortion, sealing lip also can be gone up the protuberance of second raceway member and is communicated with outer side by the sealed sides of intercommunicating pore with sealing lip with respect to the outer side of sealing lip.So the sealed sides of sealing lip and the draught head of outer side disappear, sealing lip returns the normal position and with the bearing inner sealing at once.Thus, can improve the inner sealing of bearing, and can prevent that sealing lip is adsorbed to second raceway member.
Characteristic on the formation of the rolling bearing that technological scheme 2 relates to is: raised part circumferentially forms ring-type above-mentioned second raceway member.
Rolling bearing according to technological scheme 2; Because protuberance forms ring-type; Therefore under the situation that the air pressure of the sealed sides of sealing lip diminishes with respect to the outer side of sealing lip, sealing lip is gone up the protuberance of second raceway member rapidly reliably and the sealed sides and the outer side of sealing lip is connected.Thus, can further improve the inner sealing of bearing, and can prevent reliably that sealing lip is adsorbed to second raceway member.
Characteristic on the formation of the rolling bearing of technological scheme 3 is: above-mentioned sealing lip and raised part are had many groups as one group.
Rolling bearing according to technological scheme 3 can further improve the inner sealing of bearing.
Characteristic on the formation of the rolling bearing of technological scheme 4 is: above-mentioned intercommunicating pore has a plurality of above-mentioned group, at radially corresponding with the above-mentioned sealing lip respectively intercommunicating pore that is formed with inconsistently.
Rolling bearing according to technological scheme 4; Because radially forming inconsistently for a plurality of sealing lip intercommunicating pores at present; The micro-time that the hole is communicated with so even the sealed sides of climbing up the protuberance sealing lip at sealing lip and outer side are connected; Muddy water etc. are difficult to invade from the outside of bearing inner, so further improve the inner sealing of bearing.
Can provide further raising bearing inner sealing according to the utility model, and sealing lip can not be adsorbed to by the rolling bearing of slide member.
Description of drawings
Fig. 1 is first mode of execution of the utility model that is the axial sectional view of rolling bearing for wheel.
Fig. 2 is the local amplification view of first seal arrangement periphery among Fig. 1.
Fig. 3 is the local amplification view of first seal arrangement periphery among Fig. 1.
Fig. 4 is that the A of Fig. 3 is to view.
Fig. 5 is the figure that the variation to Fig. 4 of first mode of execution describes.
Label declaration among the figure
1... rolling bearing for wheel (rolling bearing); Outer ring 2... (first raceway member); 3... interior axle (second raceway member); 4... inner ring (second raceway member); 5... first ball (rolling element); 6... second ball (rolling element); 8... seal arrangement; 16,17... raceway groove (second roller surface); 26,27... raceway groove (first roller surface); 40... core parts; 41... elastic member; 50... base portion; 51,52... axial seal lip (sealing lip); 60... fixing part; 61... extension part radially; 70,71,70a, 71a... protuberance; 72,72a... intercommunicating pore.
Embodiment
Below, the utility model is carried out than the more detailed explanation of shown position.
Fig. 1 is first mode of execution of the utility model that is the axial sectional view of rolling bearing for wheel 1 (rolling bearing).
This rolling bearing for wheel 1 (rolling bearing) possesses outer ring 2 as first raceway member, as interior axle 3, inner ring 4, a plurality of first ball 5 (rolling element), a plurality of second ball 6 (rolling element), first seal arrangement 8 and second seal arrangement 9 of second raceway member.Above-mentioned first ball 5 and second ball 6 constitute rolling element.
Interior axle 3 has the discoideus brake disc that is used to that brake disc 11 is installed and radially enlarges in an axial end and installs with flange 10.Using on the concentric circle of approximate centre as the center of flange 10, be formed with a plurality of bolt through holes with this brake disc installation.Install with flange 10 butts and make under the state of wheel arrangement 13 and brake disc 11 butts making brake disc 11 and above-mentioned brake disc; Between the end face of opposition sides wheel arrangement 13 and brake disc 11 sides and brake disc are installed with flange 10, fix with a plurality of bolts 15.
Embedding and be fixed with inner ring 4 outside axial the other end of interior axle 3.Between the inner ring 4 on the interior axle 3 and brake disc installation are with flange 10, be formed with raceway groove 16 as the angle contacting type of second roller surface.In addition, the outer circumferential face at inner ring 4 is formed with the raceway groove 17 as the angle contacting type of second roller surface.
The ratio brake disc of outer ring 2 in interior axle 3 installed the position of leaning on the other end side with flange 10, to dispose with interior axle 3 modes at diametrically contraposition.Outer ring 2 has the body side that radially enlarges in axial the other end side and installs with flange 14.Install with flange 14 in this discoideus body side, be formed with a plurality of bolt through holes that the body side installation are mounted to the bolt of body side (knuckle) with flange 14 that are used for inserting.Outer ring 2 have in the outer ring 2 inner peripheral surface vertically configured separate, as the raceway groove 26,27 of the angle contacting type of first roller surface.Raceway groove 26 is positioned at than the position of raceway groove 27 near a tip side.
A plurality of first balls 5 to be held the state that device 18 keeps, are circumferentially disposing across the interval of stipulating between the raceway groove 26 of the raceway groove 16 of interior axle 3 and outer ring 2.In addition, a plurality of second balls 6 being held the state that device 19 keeps, are circumferentially disposing across the interval of regulation between the raceway groove 27 of the raceway groove 17 of inner ring 4 and outer ring 2.
On the other hand, second seal arrangement 9 be disposed at inner ring 4 outer rings 2 between, near the opening of axial the other end side (vehicle body is installed with flange 14 sides).Second seal arrangement 9 is with the opening sealing of the other end side between inner ring 4 and the outer ring 2.
Fig. 2 is the local amplification view of first seal arrangement, 8 peripheries among Fig. 1.
As shown in Figure 2, first seal arrangement (below, only be called seal arrangement) 8 possesses the elastic member 41 of metal core parts 40 and rubber system, and core parts 40 have the fixing part 60 of tubular and extension part 61 radially.Fixing part 60 brake disc embedded and that be fixed in the inner peripheral surface of outer ring 2 is installed the end with lip part 10 sides.In addition, radially extension part 61 from fixing part 60 along fixing part 60 roughly radially extend.
On the other hand, elastic member 41 has block base portion 50, the axial seal lip 51,52 (sealing lip) of ring-type and the radial seal lip 53 of ring-type, and base portion 50 is fixed in radially extension part 61.
On the other hand, radial seal lip 53 extends to axial first ball, 5 sides and to inboard radially from base portion 50.Radial seal lip 53 slides at the outer circumferential face 90 of interior axle 3.
Slip surface, promptly in axle 3 end face 59 be formed with to the position of 51,52 butts of axial seal lip because the protuberance 70,71 of the ring-type that the sealed sides that seal arrangement 8 forms is given prominence to.
Like this, state shown in Figure 2 is the situation that the inside and outside draught head of seal arrangement 8 disappears, and with low torque slip, stuffing box bearing is inner at end face 59 for axial seal lip 51,52.
Fig. 3 is the local amplification view of first seal arrangement, 8 peripheries among Fig. 1; Be that expression rolling bearing for wheel 1 is after running in the situation about stopping etc.; The air pressure of sealed sides diminishes with respect to the outer side of seal arrangement 8, and the shape figure of the big situation of the inside and outside draught head of seal arrangement 8.
For axial seal lip 51,52; The sealed sides of axial seal lip 51,52 is littler than the outer side air pressure of axial seal lip 51,52; Owing to the power of sealed sides axial seal lip 51,52 being out of shape to sealed sides from outer side; Along with axial seal lip 51,52 to sealed sides distortion, the front end of the axial seal lip 51,52 that slides at end face 59 is got over upper convex portion 70,71.So axial seal lip 51,52 slides at protuberance 70,71 with small area of contact, therefore keeps low moment of torsion, and stuffing box bearing is inner.
Fig. 4 is that the A of Fig. 3 is to view.
As above; Rolling bearing for wheel 1 according to this mode of execution; Under the situation that the air pressure of the inner sealed sides of bearing diminishes with respect to the outside of bearing, the front end of axial seal lip 51,52 is got over upper convex portion 70,71 and the sealed sides of seal arrangement 8 is communicated with outer side.Thereafter, because the inside and outside draught head of seal arrangement 8 disappears, axial seal lip 51,52 returns the normal position at once, thus keep the inner sealing of bearing, and axial seal lip 51,52 can not be adsorbed onto slip surface, promptly in spools 3 end face 59.
In addition, owing to rolling bearing for wheel 1 is to constitute with two groups of groups that are made up of axial seal lip 51,52, protuberance 70,71 and intercommunicating pore 72, therefore can further improve the inner sealing of bearing.
Thus, even can provide the sealing lip that has reduced moment of torsion also can further improve the inner sealing of bearing and not be adsorbed onto by the rolling bearing of slide member.
In addition; Rolling bearing for wheel 1 according to this mode of execution; Even under the situation that the air pressure of the inner sealed sides of bearing diminishes with respect to the outside of bearing, can prevent also that sealing lip is adsorbed to slip surface and rotation torque increases or the generation of lifetime, intensification or the abnormal sound of the front end inordinate wear of sealing lip and sealing lip etc.
In addition, as shown in Figure 4 in the rolling bearing for wheel 1 of above-mentioned mode of execution, though protuberance 70,71 59 forms ring-type in the end, be not limited thereto, also can constitute in the end 59 along circumferentially forming protuberance partly.
Fig. 5 is the explanatory drawing of its variation of explanation.
As shown in Figure 5,59 edges circumferentially form partly in the end for protuberance 70a, 71a.Under the situation that the air pressure of the inner sealed sides of bearing diminishes with respect to the outside of bearing; The front end of axial seal lip 51,52 is got over upper convex portion 70a, 71a, around protuberance 70a, 71a, is formed with the intercommunicating pore 72a that the sealed sides with seal arrangement 8 is communicated with outer side.Thereafter, because the inside and outside draught head of seal arrangement 8 disappears, axial seal lip 51,52 returns the normal position at once, therefore keeps the inner sealing of bearing, and axial seal lip 51,52 can not be adsorbed to slip surface promptly, the end face 59 of interior axle 3.
In addition, though in the rolling bearing for wheel 1 of above-mentioned mode of execution, have radial seal lip 53.But be not limited thereto, do not have the radial seal lip also passable, and it is also passable to have two above radial seal lips.
In addition, in the rolling bearing for wheel 1 of above-mentioned mode of execution, though intercommunicating pore 72 is consistent diametrically with the position of axial seal lip 51,52, being not limited thereto, also can be the formation of inconsistent (staggering).In this case; Even get over upper convex portion at sealing lip and make in the micro-time that the sealed sides of sealing lip is communicated with outer side; Can make muddy water etc. be difficult to invade inner because axial seal lip 51,52 and intercommunicating pore stagger, can further improve the sealing of bearing inside from the outside of bearing.
In addition, in the rolling bearing for wheel 1 of above-mentioned mode of execution,, be not limited thereto though have two axial seal lips 51,52.Also can be to have a perhaps structure of three above axial seal lips.
In addition; In the rolling bearing for wheel 1 of above-mentioned mode of execution; Though be the structure of axial seal lip 51,52 in axial end face 59 slips of interior axle 3; But being not limited thereto, also can be the structure of axial seal lip in the slips such as axial end, the end face of outer ring or the inner peripheral surface of outer ring of the outer circumferential face of interior axle, interior axle.
In addition; In the rolling bearing for wheel 1 of above-mentioned mode of execution; Seal arrangement 8 be disposed at bearing rolling element disposed chamber (oiling agent closed chamber) axial one distolateral opening near; But be not limited thereto, be disposed at the axial both sides of the rolling element disposed chamber of bearing, perhaps only be disposed near the also passable of another axial distolateral opening.
In addition; In the rolling bearing for wheel 1 of above-mentioned mode of execution; Rolling bearing is axle 3 a rolling bearing for wheel in having, but the formation that the rolling bearing of this model utility also can be parts with roller surface only to be made up of the cartridge unit of a plurality of (more than two).In addition, the rolling bearing of this model utility can be water pump or motor etc., also can be any rolling bearing with rolling element and roller surface.In addition, the rolling element of the rolling bearing of this model utility can not be ball but roller, or ball and roller both sides.So-called rolling element is a roller, comprise rolling element be tapered roller situation, be the situation of cylinder roller and be the situation of convex surface roller, but be under the situation of roller at rolling element, preferred rolling element is a tapered roller.In addition, first raceway member of the rolling bearing of this model utility can be the parts of one, also can be made up of a plurality of parts, and second raceway member can be the parts of one, also can be made up of a plurality of parts.In addition, the rolling bearing of this model utility can dispose single-row rolling element, also can dispose the above rolling element of two row.
Claims (4)
1. rolling bearing is characterized in that possessing:
First raceway member, this first raceway member have the roller surface of fixed side, i.e. first roller surface;
Second raceway member, this second raceway member have the roller surface of rotary side, i.e. second roller surface;
Rolling element, this rolling element are disposed between above-mentioned first roller surface and above-mentioned second roller surface; And
Seal arrangement, sealing device are disposed between above-mentioned first raceway member and above-mentioned second raceway member, with above-mentioned first roller surface and the sealing of above-mentioned second roller surface,
Above-mentioned seal arrangement has elastic member,
This elastic member has: base portion, and this base portion is chimeric to be installed on the side face of axial end portion of the roller surface side periphery of above-mentioned first raceway member, and
The sealing lip of ring-type, the sealing lip of this ring-type, and slide at the side face of the axial end portion of the roller surface side periphery of above-mentioned second raceway member along roughly radially extending from above-mentioned base portion,
Above-mentioned second raceway member has protuberance, and this protuberance is outstanding to the sealed sides that forms owing to above-mentioned seal arrangement of the position of above-mentioned sealing lip institute butt,
Raised part is formed with at least one intercommunicating pore, and this intercommunicating pore is communicated with above-mentioned sealed sides with the outer side of above-mentioned sealed sides opposition side under the situation of above-mentioned sealing lip and raised part butt.
2. rolling bearing according to claim 1 is characterized in that,
Raised part circumferentially forms ring-type above-mentioned second raceway member.
3. according to claim 1 or the described rolling bearing of claim 2, it is characterized in that,
Above-mentioned rolling bearing has many groups with above-mentioned sealing lip and raised part as one group.
4. rolling bearing according to claim 3 is characterized in that,
Above-mentioned intercommunicating pore forms has a plurality of above-mentioned group, and the position is inconsistent diametrically with respect to the intercommunicating pore of each above-mentioned sealing lip.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011-069707 | 2011-03-28 | ||
| JP2011069707A JP2012202523A (en) | 2011-03-28 | 2011-03-28 | Rolling bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202579643U true CN202579643U (en) | 2012-12-05 |
Family
ID=47183729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220123824 Expired - Fee Related CN202579643U (en) | 2011-03-28 | 2012-03-28 | Rolling bearing |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2012202523A (en) |
| CN (1) | CN202579643U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103925297A (en) * | 2013-01-16 | 2014-07-16 | 株式会社捷太格特 | Rolling bearing device and rolling mill supporting roll using the same |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7080015B2 (en) * | 2017-03-24 | 2022-06-03 | Ntn株式会社 | Wheel bearing device |
-
2011
- 2011-03-28 JP JP2011069707A patent/JP2012202523A/en not_active Withdrawn
-
2012
- 2012-03-28 CN CN 201220123824 patent/CN202579643U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103925297A (en) * | 2013-01-16 | 2014-07-16 | 株式会社捷太格特 | Rolling bearing device and rolling mill supporting roll using the same |
| CN103925297B (en) * | 2013-01-16 | 2018-10-26 | 株式会社捷太格特 | Rolling bearing system and roller mill backing roll using the rolling bearing system |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2012202523A (en) | 2012-10-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121205 Termination date: 20140328 |