WO2017169976A1 - Palier avec joint d'étanchéité - Google Patents

Palier avec joint d'étanchéité Download PDF

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Publication number
WO2017169976A1
WO2017169976A1 PCT/JP2017/011204 JP2017011204W WO2017169976A1 WO 2017169976 A1 WO2017169976 A1 WO 2017169976A1 JP 2017011204 W JP2017011204 W JP 2017011204W WO 2017169976 A1 WO2017169976 A1 WO 2017169976A1
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WO
WIPO (PCT)
Prior art keywords
seal
bearing
lip
ring
groove wall
Prior art date
Application number
PCT/JP2017/011204
Other languages
English (en)
Japanese (ja)
Inventor
克明 佐々木
貴裕 和久田
山口　徹
Original Assignee
Ntn株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ntn株式会社 filed Critical Ntn株式会社
Publication of WO2017169976A1 publication Critical patent/WO2017169976A1/fr

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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
    • 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
    • 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
    • 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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
    • F16J15/3204—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip
    • 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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
    • F16J15/3268—Mounting of sealing rings

Definitions

  • This invention relates to a bearing with a seal provided with a seal that partitions the bearing internal space from the outside.
  • the seal generally has a seal lip portion and a ring portion fitted to the seal mounting portion of the outer ring.
  • the inner ring that is rotated relative to the outer ring is formed with a seal groove portion extending over the entire circumference in the circumferential direction.
  • the outer side groove wall of the seal groove and the seal mounting part form a seal inlet into which the seal can be inserted in the axial direction.
  • the lip tip of the seal lip part is located inside the seal groove part.
  • the inner side surface of the seal lip portion and the inner groove wall of the seal groove portion cooperate to produce a sealing action.
  • the outer groove wall of the seal groove portion shields the lip tip of the seal lip portion from the outside. Furthermore, in order to improve the foreign matter intrusion resistance and mud water resistance, a labyrinth clearance utilizing the space between the seal lip portion and the outer groove wall of the seal groove portion may be provided (Patent Document 1 below).
  • the inner side surface of the seal lip portion is pivoted over the entire circumference in the stage before the lip tip of the seal lip portion reaches the inside of the seal groove portion. From the direction, it is strongly rubbed against the outer groove wall of the seal groove.
  • the seal lip is made of elastomer, and the outer ring and inner ring are made of steel such as bearing steel. Therefore, when the inner side surface of the seal lip is strongly rubbed against the outer groove wall of the seal groove, a large frictional force is generated. Resistance to seal insertion. For this reason, it is necessary to set the diameter of the outer groove wall of the seal lip and seal groove to such an extent that the seal can be inserted properly. It had been.
  • the problem to be solved by the present invention is that the seal lip portion is inserted into the inner ring seal groove portion when the seal ring portion is fitted to the seal mounting portion of the outer ring. It is to improve.
  • the present invention includes a seal that seals the inside of the bearing with respect to the outside, an outer ring that has a seal mounting portion that holds the seal, and an inner ring that is disposed coaxially with the outer ring.
  • the inner ring has a seal groove part over the entire circumference in the circumferential direction, and the seal has a seal lip part having a lip tip located inside the seal groove part, and a ring part fitted to the seal mounting part.
  • a plurality of protrusions are formed in circular shapes having different diameters on the inner side of the seal lip portion with the lip tip as a boundary, and the plurality of protrusions are A configuration is adopted in which the contact portion between the seal and the outer groove wall of the seal groove portion is distributed so as to be limited only to the protrusions when the ring portion and the seal mounting portion are fitted.
  • the seal lip portion when the seal ring portion is fitted to the seal mounting portion of the outer ring, the seal lip portion is in contact with the outer groove wall of the seal groove portion of the inner ring from the outside side and falls to the outside side. Get over the outside groove wall.
  • the seal lip portion since the seal lip portion is in contact with the outer groove wall of the seal groove portion only by the circular protrusion formed on the inner side with the lip tip as a boundary, the outer groove wall and the seal lip along the protrusion A gap is created between the parts. Since the circular protrusion can contact the outer groove wall evenly in the circumferential direction, there is no concern that the protrusion of the seal is likely to be deformed by the protrusion.
  • the plurality of protrusions exist in a circular shape with different diameters, even if the seal lip part falls to the outside, the two or more protrusions can come into contact with the external groove wall. Along the above-mentioned gaps are formed. A gap is generated between the seal lip and the outer groove wall along the circular protrusion, so that the sliding area between the seal lip and the outer groove wall of the seal groove is reduced, and the frictional force resisting the insertion of the seal is reduced. .
  • the present invention improves the seal insertion performance until the seal lip portion reaches the inside of the seal groove portion of the inner ring when the seal ring portion is fitted to the seal mounting portion of the outer ring by adopting the above configuration. be able to.
  • FIG. 1A is a partial cross-sectional view showing a stage in which the seal is advanced in the axial direction from FIG. 1A and the seal lip portion is brought into contact with the inner ring.
  • Sectional drawing which shows the bearing with seal which concerns on 1st Example of this invention 2 is an enlarged cross-sectional view near the seal lip portion of FIG. The figure which shows a mode that the seal lip part vicinity of FIG. 2 was seen from the bearing inner side to the axial direction
  • Sectional drawing which shows the seal lip part vicinity which concerns on 2nd Example of this invention Sectional drawing which shows an example of a transmission provided with the bearing with a seal concerning this invention
  • the seal held by the outer ring is in a non-contact posture with the inner ring, and the minimum clearance between the seal lip portion of the seal and the inner ring is set to be less than 0.1 mm. ing.
  • Bearings for transmission use are required to achieve low friction while preventing foreign matter from entering the lubricating oil with a seal.
  • the seal held by the outer ring is in contact with the inside of the seal groove portion at the seal lip portion, it is possible to suppress the entry of foreign matter, but the seal torque at the contact portion inhibits the reduction of friction.
  • the seal held by the outer ring is in a non-contact posture with the inner ring, it is possible to achieve a significantly low friction by setting the seal torque to zero normally, but the seal lip and seal groove are Intrusion of foreign matter must be suppressed with the labyrinth seal to be formed.
  • the minimum clearance between the seal lip portion and the inner ring is less than 0.1 mm.
  • the conventional seal has a large resistance when the seal is inserted to fit the seal ring portion and the seal mounting portion, and the above-described minimum clearance of less than 0.1 mm can be set for the posture of the seal held in the outer ring by the fitting. It was difficult to manage.
  • the present invention it is possible to manage the posture of the seal to such an extent that the minimum clearance of less than 0.1 mm can be set by reducing the resistance when the seal is inserted and improving the seal insertion property. . That is, according to the first embodiment, it is possible to achieve both reduction in friction and suppression of foreign matter intrusion, and the bearing with seal is suitable for transmission applications.
  • a bearing 1 with a seal includes a seal 2 that seals the inside of the bearing with respect to the outside, an outer ring 4 having a seal mounting portion 3 that holds the seal 2, and an outer ring 4. And an inner ring 5 arranged coaxially.
  • the central axis of the outer ring 4 and the central axis of the inner ring 5 are set coaxially.
  • the “axial direction” refers to the direction along the central axis of the outer ring 4 and the inner ring 5
  • the “radial direction” refers to the direction perpendicular to the axial direction. Means the circumferential direction around the central axis.
  • the outer ring 4 is made of an annular member and has a raceway surface 6 on its inner periphery.
  • the outer ring 4 is attached to a housing of another device.
  • the inner ring 5 is made of an annular member and has a raceway surface 7 on the outer periphery thereof.
  • a plurality of rolling elements 8 are interposed between the raceway surface 6 of the outer ring 4 and the raceway surface 7 of the inner ring 5.
  • the circumferential interval between the rolling elements 8 is maintained by a cage 9.
  • the outer ring 4, the inner ring 5, and the plurality of rolling elements 8 mainly constitute a rolling bearing that supports a radial load.
  • the outer ring 4 is attached to a stationary member of another device.
  • the inner ring 5 is attached to a shaft that is rotationally driven by another device.
  • the outer ring 4 and the inner ring 5 have the illustrated cross-sectional shape over the entire circumference.
  • the outer ring 4 and the inner ring 5 are each formed of steel, for example, bearing steel.
  • the seal 2 includes a seal lip portion 10 formed in a generally tongue shape toward the radial direction, a ring portion 11 fitted to the seal mounting portion 3, and a dust formed in a tongue shape generally in the axial direction. And a lip portion 12.
  • the seal 2 is held in a predetermined position by the seal mounting portion 3 in a predetermined posture shown in FIG. 2.
  • the seal lip 10 and the dust lip 12 are each formed of an elastomer.
  • the seal lip portion 10 may be formed of either a rubber material or a resin material.
  • the ring portion 11 is reinforced with a cored bar 13.
  • Elastomers such as the seal lip portion 10 and the dust removal lip portion 12 are formed by vulcanization molding and bonded to the core metal 13.
  • FIG. 3 is an enlarged view of the vicinity of the seal lip 10.
  • the surface of the seal lip portion 10 includes a lip tip 14 that is a portion that defines the diameter of the seal lip portion 10, an inner side surface 15 that is a surface portion on the inner side from the lip tip 14, It is comprised by the external side surface 16 which consists of the surface part of the external side from the front-end
  • the vicinity of the lip tip 14 of the inner side surface 15 is in sliding contact with the rotating inner ring 5 and has a sealing action.
  • a labyrinth clearance 17 is formed between the outer side surface 16 and the dust lip portion 12 and the inner ring 5.
  • the seal mounting portion 3 is formed in a groove shape at the inner peripheral end of the outer ring 4 over the entire circumference.
  • the inner ring 5 has a seal groove 20 defined by an inner groove wall 18 and an outer groove wall 19 over the entire circumference.
  • the outer groove wall 19 and the seal mounting portion 3 form a seal inlet into which the seal 2 can be inserted in the axial direction.
  • the groove shoulder of the outer groove wall 19 is lower than the inner groove wall 18, and the groove depth of the seal groove portion 20 extends from the groove bottom to the groove shoulder of the outer groove wall 19.
  • the inner surface of the groove of the seal groove 20 is composed of the surfaces of the inner groove wall 18 and the outer groove wall 19 that are within the groove depth from the groove bottom.
  • the surface portion of the inner groove wall 18 is a lip contact surface corresponding to the seal lip portion 10.
  • the lip tip 14 of the seal lip portion 10 is positioned inside the seal groove portion 20, and the lip tip 14 of the inner side surface 15 is in contact with the surface portion of the inner groove wall 18 with a radial interference.
  • the diameter A of the outer groove wall 19 is the diameter at the groove shoulder, and in the illustrated example, is the outer diameter of the groove shoulder.
  • the diameter B of the seal lip 10 is the diameter at the lip tip 14 and is the inner diameter of the seal 2 in the illustrated example.
  • the interference between the seal lip 10 and the outer groove wall 19 corresponds to (BA).
  • the diameter B of the seal lip 10 is set to be less than 100% with respect to the diameter A of the outer groove wall 19. If the ratio B / A is set to 100% or more, the labyrinth clearance 17 cannot be formed by using the external groove wall 19, and the lip tip 14 of the seal lip portion 10 is made to the outside by the external groove wall 19. Therefore, the foreign matter can easily reach the contact portion between the vicinity of the lip tip 14 and the surface portion of the inner groove wall 18.
  • the ratio B / A is generally set to 97% or more. If the ratio B / A is set to be less than 97%, the tightening allowance between the seal lip portion 10 and the outer groove wall 19 becomes too tight, and there is a concern that the mounting of the seal 2 becomes difficult.
  • FIG. 1A shows an annular portion 11 and a seal mounting portion 3 by inserting a seal 2 in an axial direction into a seal insertion space between an outer ring 4 and an inner ring 5 arranged coaxially and press-fitting the ring portion 11 into the seal mounting portion 3.
  • FIG. 1B shows a state in which the insertion of the seal 2 further proceeds from the position of FIG.
  • FIG. 4 shows a state in which the vicinity of the seal lip portion 10 in the natural state is viewed in the axial direction from the inner side.
  • the inner side surface 15 of the seal lip portion 10 with the lip tip 14 as a boundary has an outer groove wall 19 and a seal lip portion when the ring portion 11 and the seal mounting portion 3 are fitted.
  • a plurality of ridges 22 are formed between the 10 for securing the gap 21.
  • These protrusions 22 are formed in circular shapes having different diameters, and are arranged at equal intervals in the radial direction. Each protrusion 22 extends over the entire circumference in the illustrated cross-sectional shape.
  • the protrusion 22 located closest to the inner diameter of the seal 2 exists in the radial region corresponding to the tightening allowance (BA), and faces the outer groove wall 19 in the axial direction at the time of the aforementioned fitting.
  • BA tightening allowance
  • FIG. 1B when the protrusion 22 comes into contact with the outer groove wall 19 from the outside as the seal 2 is inserted in the axial direction, the protrusion 22 contacts the outer groove wall 19 along the protrusion 22.
  • a gap 21 is formed in the gap.
  • the protrusions 22 are also distributed in a radial region that approaches the outer diameter side from the radial region corresponding to the tightening allowance (BA).
  • BA tightening allowance
  • the cross-sectional shape of the protrusion 22 in the illustrated example is a solid semicircle. This is the direction in which the protrusion 22 and the external groove wall 19 are in point contact on the cross section when the ring portion 11 and the seal mounting portion 3 are fitted, and the seal lip portion 10 slides on the external groove wall 19. This is because the point contact state can be maintained in accordance with the change of.
  • the reference of the protrusion amount of the ridge 22 is set from the inner peripheral surface 23 of the two peripheral surfaces forming the lip tip 14. What is necessary is just to determine suitably the cross-sectional shape and protrusion amount of the protrusion 22 so that the clearance gap 21 may be produced along self, while contacting with the external side groove wall 19.
  • the sliding contact between the seal lip portion 10 and the external groove wall 19 when the ring portion 11 and the seal mounting portion 3 are fitted together causes the seal lip portion 10 to move to the external groove wall 19. It is limited to occur only between the protrusion 22 and the outer groove wall 19 in the entire period from the contact to the inner side of the seal groove 20 after the contact.
  • This bearing 1 with a seal is as described above.
  • the ring portion 11 of the seal 2 is fitted to the seal mounting portion 3 of the outer ring 4 shown in FIG. 2, as shown in FIG. Approaches the outer groove wall 19 of the seal groove portion 20 of the inner ring 5 in the axial direction from the outside.
  • the protrusion 22 closest to the inner diameter comes into contact with the vicinity of the groove shoulder chamfer of the outer groove wall 19.
  • the seal lip portion 10 gets over the groove shoulder of the outer side groove wall 19 while largely falling outward.
  • the two or more ridges 22 of the fallen seal lip portion 10 come into contact with the outer groove wall 19, and a gap 21 is formed along these adjacent ridges 22, 22.
  • the bearing with seal 1 can improve the seal insertion property until the seal lip portion 10 reaches the inside of the seal groove portion 20 when the seal 2 is mounted.
  • the ratio B / A is set to 99.7%, but even if the setting is changed to be about 1% smaller, it becomes extremely difficult to insert the seal.
  • the inventor of the present application confirmed that the ratio B / A of the conventional seal was changed to 98.5% and a prototype employing a plurality of protrusions as in the first embodiment.
  • the ratio B / A is set to less than 97%. Is also possible.
  • the bearing 1 with a seal can be easily formed by forming it integrally with the seal lip portion 10 because the protrusion 22 is formed on the seal lip portion 10, and the surface near the groove shoulder of the outer side groove wall 19.
  • the shape can be a simple cylindrical surface or chamfered shape as before.
  • the friction coefficient of the ridges 22 may be reduced by covering.
  • FIG. 5 shows an enlarged view of the vicinity of the seal lip portion in the state of FIG. 2 in the second embodiment.
  • the seal 2 held by the outer ring 4 is in a non-contact posture with the inner ring 5.
  • the minimum clearance g between the seal lip portion 10 and the inner ring 5 of the seal 2 is generated between the lip tip 14 of the seal lip portion 10 and the inner groove wall 18 of the inner ring 5.
  • the ratio B / A of the diameter B of the seal lip portion 10 and the diameter A of the outer groove wall 19 is set to 98% or more and less than 99% where good seal insertion property is confirmed. Yes.
  • the minimum clearance g can be set to less than 0.1 mm for the posture of the seal 2 held on the outer ring 4.
  • the labyrinth seal formed by the seal lip portion 10 and the seal groove portion 20 of the inner ring 5 has a minimum clearance g between the seal lip portion 10 and the inner ring 5 set to less than 0.1 mm. It is particularly narrow between the lip portions 10. For this reason, it is very difficult for foreign matter to pass through the minimum clearance g from the outside with the lip tip 14 as a boundary. Therefore, even if the non-contact type seal 2 is employed, foreign matter intrusion can be suppressed to such an extent that there is no fear of adversely affecting the bearing life.
  • the bearing with a seal according to the second embodiment can achieve both low friction by reducing the seal torque of the seal 2 to zero, and suppression of foreign matter intrusion, and is suitable for transmission applications. It becomes a bearing with a good seal.
  • the sealed bearing 1 can be used for supporting a shaft provided in a transmission for an automobile, for example.
  • the transmission 100 illustrated in FIG. 6 is of a manual type, and an input shaft 102, an output shaft 103, and a pilot shaft 104 are arranged in series in a housing 101, and a counter shaft 105 and a reverse shaft 106 are connected to the output shaft 103.
  • the structure is arranged in parallel.
  • the reverse shaft 106 is also engaged with the output shaft 103.
  • Each shaft 102 to 106 is provided with a large number of gear groups. By changing the meshing of these gear groups by a clutch hub 107 that is shifted by an external operation, the input shaft 102 is changed to the output shaft 103.
  • the torque transmission path is appropriately selected.
  • an input shaft 102, an output shaft 103, a pilot shaft 104, a counter shaft 105, and gear members 108 attached to one end side of the counter shaft 105 are supported by a bearing 1 with a seal.
  • a bearing 1 with a seal for example, a vehicle differential, a constant velocity joint, a propeller shaft, a turbocharger, a machine work, etc. Application to machines, wind power generators, or wheel bearings.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sealing With Elastic Sealing Lips (AREA)
  • Sealing Of Bearings (AREA)
  • Sealing Devices (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

Selon la présente invention, de multiples saillies (22) sont formées sous la forme de cercles ayant des diamètres mutuellement différents sur le côté interne d'une partie de lèvre de joint d'étanchéité (10) quand une extrémité avant de lèvre (14) est prise comme limite. Ces saillies (22) sont réparties de telle sorte que, quand une partie annulaire (11) du joint d'étanchéité (2) et une partie de montage de joint d'étanchéité (3) d'une bague externe (4) sont adaptées l'une à l'autre, l'emplacement de contact entre le joint d'étanchéité (2) et une paroi de rainure externe (19) d'une partie de rainure de joint d'étanchéité (20) d'une bague interne (5) est limité uniquement aux saillies (22). Par conséquent, quand les parties précédemment mentionnées sont adaptées l'une à l'autre, un espace (21) est formé le long des saillies (22), et la zone de coulissement entre la paroi de rainure externe (19) et la partie de lèvre de joint d'étanchéité (10) est réduite.
PCT/JP2017/011204 2016-03-31 2017-03-21 Palier avec joint d'étanchéité WO2017169976A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2016-071131 2016-03-31
JP2016071131A JP6727002B2 (ja) 2016-03-31 2016-03-31 シール付軸受

Publications (1)

Publication Number Publication Date
WO2017169976A1 true WO2017169976A1 (fr) 2017-10-05

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WO (1) WO2017169976A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20230072798A1 (en) * 2021-09-09 2023-03-09 Aktiebolaget Skf Bearing seal and a bearing with the same

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102580857B1 (ko) * 2018-12-28 2023-09-22 주식회사 베어링아트 씰링성이 향상된 구름 베어링
KR102604188B1 (ko) * 2019-04-03 2023-11-23 주식회사 베어링아트 씰링성이 향상된 구름 베어링

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001146923A (ja) * 1999-09-10 2001-05-29 Nsk Ltd 密封形転がり軸受
JP2010112472A (ja) * 2008-11-06 2010-05-20 Ntn Corp シール付き軸受

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009264401A (ja) * 2008-04-22 2009-11-12 Nsk Ltd 通電式転がり軸受
JP5584703B2 (ja) * 2009-01-28 2014-09-03 フェデラル−モーグル コーポレイション ラジアルシャフトシール、ラジアルシャフトシールアセンブリおよび設置方法

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001146923A (ja) * 1999-09-10 2001-05-29 Nsk Ltd 密封形転がり軸受
JP2010112472A (ja) * 2008-11-06 2010-05-20 Ntn Corp シール付き軸受

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20230072798A1 (en) * 2021-09-09 2023-03-09 Aktiebolaget Skf Bearing seal and a bearing with the same

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JP6727002B2 (ja) 2020-07-22
JP2017180739A (ja) 2017-10-05

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