JP2015021590A - Seal device for rolling bearing and rolling bearing - Google Patents

Seal device for rolling bearing and rolling bearing Download PDF

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Publication number
JP2015021590A
JP2015021590A JP2013151872A JP2013151872A JP2015021590A JP 2015021590 A JP2015021590 A JP 2015021590A JP 2013151872 A JP2013151872 A JP 2013151872A JP 2013151872 A JP2013151872 A JP 2013151872A JP 2015021590 A JP2015021590 A JP 2015021590A
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rolling bearing
seal
core
elastic body
metal
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英信 馬上
Eishin Umagami
英信 馬上
今野　勝広
Katsuhiro Konno
勝広 今野
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NSK Ltd
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NSK Ltd
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Priority to JP2013151872A priority Critical patent/JP2015021590A/en
Priority to CN201420361324.3U priority patent/CN203962701U/en
Priority to DE202014103365.3U priority patent/DE202014103365U1/en
Publication of JP2015021590A publication Critical patent/JP2015021590A/en
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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
    • F16C23/00—Bearings for exclusively rotary movement adjustable for aligning or positioning
    • F16C23/06—Ball or roller bearings
    • F16C23/08—Ball or roller bearings self-adjusting
    • F16C23/082—Ball or roller bearings self-adjusting by means of at least one substantially spherical surface
    • F16C23/084—Ball or roller bearings self-adjusting by means of at least one substantially spherical surface sliding on a complementary spherical surface
    • 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
    • F16C33/7803—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings
    • F16C33/7806—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings for spherical roller bearings
    • 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
    • F16C33/7803—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings
    • F16C33/7813—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings for tapered roller bearings
    • 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
    • F16C33/7846—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 a gap between the annular disc and the inner race
    • F16C33/785—Bearing shields made of sheet metal
    • 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
    • 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
    • F16C33/7886—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted outside the gap between the inner and outer races, e.g. sealing rings mounted to an end face or outer surface of a race
    • 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
    • F16C19/24—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 radial load mainly
    • F16C19/26—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 radial load mainly with a single row of rollers
    • 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
    • F16C19/24—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 radial load mainly
    • F16C19/28—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 radial load mainly with two or more rows of rollers
    • 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
    • F16C19/38—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 two or more rows of rollers
    • F16C19/383—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 two or more rows of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone
    • F16C19/385—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 two or more rows of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone with two rows, i.e. double-row tapered roller bearings
    • F16C19/386—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 two or more rows of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone with two rows, i.e. double-row tapered roller bearings in O-arrangement
    • 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
    • F16C19/38—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 two or more rows of rollers
    • F16C19/383—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 two or more rows of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone
    • F16C19/388—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 two or more rows of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone with four rows, i.e. four row tapered roller bearings
    • 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
    • F16C23/00—Bearings for exclusively rotary movement adjustable for aligning or positioning
    • F16C23/06—Ball or roller bearings
    • F16C23/08—Ball or roller bearings self-adjusting
    • F16C23/082—Ball or roller bearings self-adjusting by means of at least one substantially spherical surface
    • F16C23/086—Ball or roller bearings self-adjusting by means of at least one substantially spherical surface forming a track for rolling elements

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)
  • Sealing Of Bearings (AREA)
  • Support Of The Bearing (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a seal device for a rolling bearing which maintains good sealability of the bearing even if offset and inclination of a shaft occur, and to provide the rolling bearing.SOLUTION: An oil seal 20 includes: a core bar 30; and an elastic body 40. The core bar 30 includes: a first core bar 32 extending to the radial inner side; and a second core bar 34 extending to the radial inner side. The elastic body 40 includes: a connection part 43 which connects the first core bar 32 with the second core bar 34; and a seal lip part 44 which is fixed to the second core bar 34 and slidably contacts with an inner race 12.

Description

本発明は、転がり軸受用シール装置、及び転がり軸受に関する。   The present invention relates to a rolling bearing seal device and a rolling bearing.

鉄等の金属材料を圧延するための連続鋳造機のロールは、その軸方向両端部に同軸上に設けたロールネックと称される円柱部を、例えば複列円すいころ軸受を介して回転自在に支承した構造を有する。このような連続鋳造機設備用軸受は、通常、シールなしの非密封タイプであり、グリースが連続給脂機構により常に軸受に供給される。   A roll of a continuous casting machine for rolling a metal material such as iron can be freely rotated through a cylindrical portion called a roll neck provided coaxially at both axial end portions thereof, for example, via a double row tapered roller bearing. Has a supported structure. Such a bearing for a continuous casting machine is usually an unsealed type without a seal, and grease is always supplied to the bearing by a continuous greasing mechanism.

また、連続鋳造機設備用軸受としては、圧延水や冷却水が軸受内部に浸入することを防止するためにシール装置を具備している密封タイプもある。このようなシール装置としては、軸受の軸方向端部開口を遮蔽して、内輪及び外輪間の軸受内部空間をシールするシールリップ部を接触面に摺接させる接触シール構造からなるものが知られている（例えば、特許文献１参照）。特許文献１のシール装置では、シールリップ部の基端部位に金属環が埋設されており、当該金属環によって基端部位が補強されている。   Further, as a bearing for a continuous casting machine facility, there is a sealed type equipped with a sealing device to prevent rolling water and cooling water from entering the inside of the bearing. As such a seal device, there is known a device having a contact seal structure that shields a bearing lip portion that seals the bearing inner space between the inner ring and the outer ring and that contacts the contact surface by shielding the axial end opening of the bearing. (For example, refer to Patent Document 1). In the sealing device of Patent Document 1, a metal ring is embedded in the base end portion of the seal lip portion, and the base end portion is reinforced by the metal ring.

特開２００３−２２７５２２号公報JP 2003-227522 A

ところで、連続鋳造設備は、水蒸気や酸化スケールのある環境内に使用される為、グリースが水やスケールにより汚染されやすく、汚染されたグリースが軸受内部へ供給されると、軸受の摩耗・破損に繋がる。更に、連続給脂用のグリースは、一台の連続鋳造機にあたり年間およそ３０〜７０トンの使用量が必要とれるので、グリース廃棄物の量が膨大であり、環境汚染の虞があり、グリース廃棄物の処理も煩雑でコストがかかる。このように、グリースの使用量を減らし、環境負荷の少ない軸受の開発が課題となっている。   By the way, since the continuous casting equipment is used in an environment with water vapor and oxide scale, grease is likely to be contaminated by water and scale, and if contaminated grease is supplied into the bearing, the bearing may be worn or damaged. Connected. Furthermore, since grease for continuous lubrication requires a usage of approximately 30 to 70 tons per year per continuous casting machine, the amount of grease waste is enormous and there is a risk of environmental pollution. Processing of objects is also complicated and expensive. Thus, the development of bearings that reduce the amount of grease used and have a low environmental load is an issue.

そこで、特許文献１のように、シール装置を有する密封タイプの軸受を用いることも考えられるが、このシール装置では、軸の偏心や傾きが発生した場合、接触面との接触状態が変化し、強く当たる部分と弱く当たる部分とが発生する。そして、接触面と強く当接している部分では、破損が生じ易くなってしまう。一方、接触面と弱く当接している部分では、接触面とのしめしろが弱くなることで、軸受内部の潤滑剤が漏れ易くなると共に、外部から異物が浸入し易くなり、軸受の早期損傷を招く虞がある。   Therefore, it is conceivable to use a sealed bearing having a sealing device as in Patent Document 1, but in this sealing device, when the shaft is eccentric or inclined, the contact state with the contact surface changes, A portion that hits strongly and a portion that hits weakly occur. And in the part which is contact | abutting strongly with a contact surface, it will become easy to produce a damage. On the other hand, at the portion that is weakly in contact with the contact surface, the interference with the contact surface is weakened, so that the lubricant inside the bearing can easily leak and foreign matter can easily enter from the outside, causing early damage to the bearing. There is a risk of inviting.

本発明は、前述した課題に鑑みてなされたものであり、軸の偏心や傾きが発生した場合であっても、軸受の密封性を良好に維持可能な転がり軸受用シール装置、及び転がり軸受を提供することにある。   The present invention has been made in view of the above-described problems, and includes a rolling bearing seal device and a rolling bearing that can maintain good sealing performance of a bearing even when shaft eccentricity or inclination occurs. It is to provide.

本発明の上記目的は、下記の構成により達成される。
（１） 外方部材又は内方部材に固定される芯金と、前記芯金に固定される弾性体と、を備え、
前記芯金は、径方向に延びる第一芯金と、径方向に延びる第二芯金と、を有しており、
前記弾性体は、前記第一芯金と前記第二芯金とを接続する接続部と、前記第二芯金に固定され、内方部材又は外方部材に摺接するシールリップ部と、を有することを特徴とする転がり軸受用シール装置。
（２） 前記弾性体の接続部は、径方向断面が軸方向内側に傾斜する略直線形状、若しくは略曲線形状、又は略蛇腹形状であることを特徴とする（１）に記載の転がり軸受用シール装置。
（３） 前記弾性体は、前記第二芯金に固定されると共に前記シールリップ部よりも軸方向内側に位置し、前記内方部材又は前記外方部材との間で接触又は非接触のシールを形成する補助リップ部を有することを特徴とする（１）又は（２）に記載の転がり軸受用シール装置。
（４） （１）〜（３）の何れか１つに記載の転がり軸受用シール装置を備えることを特徴とする転がり軸受。
（５） 前記外方部材は、外輪、又は外輪及び該外輪の径方向外側に配置された球面座、又は外輪及び該外輪の軸方向外側に配置されたシールホルダであり、
前記内方部材は、内輪であることを特徴とする（１）〜（４）の何れか１つに記載の転がり軸受。 The above object of the present invention can be achieved by the following constitution.
(1) A metal core fixed to the outer member or the inner member, and an elastic body fixed to the metal core,
The metal core has a first metal core extending in the radial direction and a second metal core extending in the radial direction,
The elastic body includes a connection portion that connects the first core metal and the second core metal, and a seal lip portion that is fixed to the second core metal and that is in sliding contact with the inner member or the outer member. A rolling bearing sealing device characterized by that.
(2) The connecting portion of the elastic body has a substantially linear shape, a substantially curved shape, or a substantially bellows shape whose radial cross section is inclined inward in the axial direction, and for a rolling bearing according to (1) Sealing device.
(3) The elastic body is fixed to the second core metal and is positioned on the inner side in the axial direction than the seal lip portion, and is in contact with or not in contact with the inner member or the outer member. The rolling bearing sealing device according to (1) or (2), further comprising an auxiliary lip portion that forms
(4) A rolling bearing comprising the rolling bearing seal device according to any one of (1) to (3).
(5) The outer member is an outer ring, a spherical seat disposed on the outer side in the radial direction of the outer ring and the outer ring, or a seal holder disposed on the outer side in the axial direction of the outer ring and the outer ring,
The rolling bearing according to any one of (1) to (4), wherein the inner member is an inner ring.

本発明の転がり軸受用シール装置によれば、芯金は、径方向に延びる第一芯金と、径方向に延びる第二芯金と、を有しており、弾性体は、第一芯金と第二芯金とを接続する接続部と、第二芯金に固定され、内方部材又は外方部材に摺接するシールリップ部と、を有する。したがって、軸の偏心や傾きが発生した場合であっても、弾性体の接続部が軸の偏心や傾きに追従することによって、シールリップ部と内方部材又は外方部材との接触を維持することが可能である。また、シールリップ部は、第二芯金に固定されるので、内方部材又は外方部材とのしめしろ及び緊迫力を一定に保つことができ、良好なシール性能を発揮することが可能である。   According to the rolling bearing sealing device of the present invention, the core bar has the first core bar extending in the radial direction and the second core bar extending in the radial direction, and the elastic body is the first core bar. And a second metal core, and a seal lip portion fixed to the second metal core and in sliding contact with the inner member or the outer member. Therefore, even when the shaft is eccentric or inclined, the contact portion between the seal lip portion and the inner member or the outer member is maintained by the connecting portion of the elastic body following the eccentricity or inclination of the shaft. It is possible. Moreover, since the seal lip portion is fixed to the second cored bar, the interference with the inner member or the outer member and the tightening force can be kept constant, and good sealing performance can be exhibited. is there.

実施形態に係る自動調心ころ軸受の要部断面図である。It is principal part sectional drawing of the self-aligning roller bearing which concerns on embodiment. 転がり軸受用シール装置の要部断面図である。It is principal part sectional drawing of the sealing apparatus for rolling bearings. 変形例に係る転がり軸受用シール装置の要部断面図である。It is principal part sectional drawing of the sealing apparatus for rolling bearings which concerns on a modification. 他の変形例に係る転がり軸受用シール装置の要部断面図である。It is principal part sectional drawing of the sealing apparatus for rolling bearings which concerns on another modification. 円筒ころ軸受の要部断面図である。It is principal part sectional drawing of a cylindrical roller bearing. 複列円錐ころ軸受の要部断面図である。It is principal part sectional drawing of a double row tapered roller bearing. 球面座付き複列円錐ころ軸受の要部断面図である。It is principal part sectional drawing of a double row tapered roller bearing with a spherical seat. 球面座付き円筒ころ軸受の要部断面図である。It is principal part sectional drawing of a cylindrical roller bearing with a spherical seat. 球面座付き複列円錐ころ軸受の要部断面図である。It is principal part sectional drawing of a double row tapered roller bearing with a spherical seat. 球面座付き円筒ころ軸受の要部断面図である。It is principal part sectional drawing of a cylindrical roller bearing with a spherical seat. 鉄鋼設備用四列円錐ころ軸受の要部断面図である。It is principal part sectional drawing of the four row tapered roller bearing for steel facilities. 鉄鋼設備用四列円筒ころ軸受の要部断面図である。It is principal part sectional drawing of the four-row cylindrical roller bearing for steel facilities. 鉄鋼設備用ニ列円筒ころ軸受の要部断面図である。It is principal part sectional drawing of the double row cylindrical roller bearing for steel facilities.

以下、本発明の一実施形態に係る転がり軸受用シール装置について、図面に基づいて詳細に説明する。   Hereinafter, a rolling bearing sealing device according to an embodiment of the present invention will be described in detail with reference to the drawings.

本実施形態に係る自動調心ころ軸受１０は、図１に示すように、内周面に球面状の外輪軌道溝１１ａが形成された外方部材としての外輪１１と、外周面に球面状の内輪軌道溝１２ａが二列形成された内方部材としての内輪１２と、保持器１３によって回動自在に保持され、外輪軌道溝１１ａと内輪軌道溝１２ａとの間に二列に整列して転動自在に配設された複数の転動体である樽形のころ１４と、外輪１１の内周面と内輪１２の外周面との間に存在する空間の軸方向両端部開口を塞ぐようにそれぞれ配設され、軸受内部を密封する一対の転がり軸受用シール装置としてのオイルシール２０と、を備える。   As shown in FIG. 1, the self-aligning roller bearing 10 according to the present embodiment includes an outer ring 11 as an outer member in which a spherical outer ring raceway groove 11a is formed on the inner peripheral surface, and a spherical surface on the outer peripheral surface. The inner ring 12 as an inner member in which the inner ring raceway grooves 12a are formed in two rows and the retainer 13 are rotatably held, and are aligned in two rows between the outer ring raceway grooves 11a and the inner ring raceway grooves 12a. A plurality of rolling elements arranged in a freely movable manner, such as barrel-shaped rollers 14, and openings in the axial ends of the space existing between the inner peripheral surface of the outer ring 11 and the outer peripheral surface of the inner ring 12, respectively. And an oil seal 20 as a pair of rolling bearing sealing devices that are disposed and seal the inside of the bearing.

外輪１１の軸方向中間部には、外周面から内周面に貫通し、軸受空間に潤滑剤を供給可能且つ空気抜きが可能な貫通孔１５が形成されている。なお、貫通孔１５に雌ねじ部（不図示）を設け、当該雌ねじ部に軸受空間を密封するための栓を螺合してもよい。また、軸受空間内に潤滑剤が封入される構成である限り、貫通孔１５を設けなくても構わない。ここで、軸受空間内に封入される潤滑剤は、粘度が４０℃で３００ｍｍ２／ｓ〜５００ｍｍ２／ｓである高粘度の潤滑油、又は動粘度が４０℃で７０ｍｍ２／ｓ〜５００ｍｍ２／ｓである基油とウレア化合物を増ちょう剤とする耐熱性及び耐摩耗性に優れたグリースが用いられる。 A through hole 15 that penetrates from the outer peripheral surface to the inner peripheral surface, can supply the lubricant to the bearing space, and can vent the air is formed in the axially intermediate portion of the outer ring 11. In addition, a female screw part (not shown) may be provided in the through-hole 15, and a plug for sealing the bearing space may be screwed into the female screw part. Further, as long as the lubricant is sealed in the bearing space, the through hole 15 may not be provided. Here, a lubricant sealed in the bearing space, 70mm 2 / s~500mm 2 Viscosity high viscosity lubricating oil which is 300mm 2 / s~500mm 2 / s at 40 ° C., or kinematic viscosity at 40 ° C. Grease having excellent heat resistance and wear resistance using a base oil and urea compound as / s as a thickener.

図２も参照し、オイルシール２０は、全体として略円環形状に形成されており、外輪１１の内周面に固定される芯金３０と、芯金３０の軸方向外側面（軸方向において軸受の外側に向かう面を意味する。）に固定され、ゴム等の弾性材料から形成された弾性体４０と、を有する。   Referring also to FIG. 2, the oil seal 20 is formed in a substantially annular shape as a whole, and includes a core 30 fixed to the inner peripheral surface of the outer ring 11, and an axially outer surface (in the axial direction) of the core 30. An elastic body 40 that is fixed to the outer surface of the bearing and formed of an elastic material such as rubber.

芯金３０は、外輪１１の内周面の軸方向外側端部に形成された溝部１１ｂに圧入されて固定され、径方向内側に延びる断面略Ｌ字形状（以降、断面とは径方向断面を意味する。）の第一芯金３２と、第一芯金３２の径方向内側端部３２ａよりも軸方向内側に配置され、径方向内側に延びる断面略直線形状の第二芯金３４と、に分割されている。   The core metal 30 is press-fitted and fixed in a groove 11b formed at the axially outer end of the inner peripheral surface of the outer ring 11, and has a substantially L-shaped cross section extending inward in the radial direction (hereinafter, the cross section refers to a radial cross section). A first cored bar 32), a second cored bar 34 that is arranged on the inner side in the axial direction than the radially inner end 32a of the first cored bar 32 and extends inward in the radial direction, It is divided into

弾性体４０は、第一芯金３２の軸方向外側面に固定される断面略Ｌ字形状の第一延出部４１と、第二芯金３４の軸方向外側面に固定される断面略直線形状の第二延出部４２と、第一延出部４１及び第二延出部４２に連続すると共に、第一芯金３２の径方向内側端部３２ａ及び第二芯金３４の径方向外側端部３４ａを接続する接続部４３と、を有する。ここで、第一芯金３２の径方向内側端部３２ａが、第二芯金３４の径方向外側端部３４ａよりも径方向外側に位置しているので、弾性体４０の接続部４３は、軸方向内側に向かうにしたがって径方向内側に傾斜する断面略直線形状とされている。   The elastic body 40 includes a first extending portion 41 having a substantially L-shaped cross section that is fixed to the outer surface in the axial direction of the first metal core 32 and a substantially straight line that is fixed to the outer surface in the axial direction of the second metal core 34. The second extending portion 42 having the shape, the first extending portion 41 and the second extending portion 42 are continuous, and the radially inner end 32a of the first core metal 32 and the radially outer side of the second core metal 34 are connected. And a connection portion 43 for connecting the end portion 34a. Here, since the radially inner end portion 32a of the first core metal 32 is located radially outside the radially outer end portion 34a of the second core metal 34, the connecting portion 43 of the elastic body 40 is The cross section has a substantially linear shape that inclines radially inward as it goes inward in the axial direction.

また、弾性体４０は、第二延出部４２の径方向内側端部に接続されると共に、第二芯金３４の径方向内側端部３４ｂに軸方向に固定されるシールリップ部４４を有する。シールリップ部４４は、径方向内側端部４４ａが内輪１２の外周面の軸方向外側端部に形成された溝部１２ｂに弾性的に摺接して外輪１１と内輪１２との間をシールしている。なお、シールリップ部４４を確実に内輪１２の溝部１２ｂに摺接させる必要があることから、シールリップ部４４の外周面４４ｂにスプリング５０を装着し、そのスプリング５０の弾性力によりシールリップ部４４を内輪１２の溝部１２ｂ側へ付勢するようにしている。   The elastic body 40 includes a seal lip portion 44 that is connected to the radially inner end portion of the second extending portion 42 and is axially fixed to the radially inner end portion 34 b of the second core metal 34. . The seal lip portion 44 has a radially inner end portion 44 a that is elastically slidably contacted with a groove portion 12 b formed on an outer end surface of the inner ring 12 in the axial direction to seal between the outer ring 11 and the inner ring 12. . Since it is necessary to make the seal lip 44 slidably contact the groove 12 b of the inner ring 12, the spring 50 is attached to the outer peripheral surface 44 b of the seal lip 44, and the seal lip 44 by the elastic force of the spring 50. Is urged toward the groove 12b side of the inner ring 12.

さらに、弾性体４０は、第二芯金３４の径方向内側端部３４ｂから連続して軸方向外側に延びると共に、シールリップ部４４よりも軸方向内側に位置するバンパーリップ部４５を有する。バンパーリップ部４５は、その径方向内側端部４５ａがシールリップ部４４の径方向内側端部４４ａよりも径方向外側に位置するように形成されており、内輪１２の溝部１２ｂとの間で非接触のシールを形成する補助リップ部として働く。   Further, the elastic body 40 has a bumper lip portion 45 that extends from the radially inner end portion 34 b of the second core metal 34 continuously in the axial direction and is located on the inner side in the axial direction than the seal lip portion 44. The bumper lip portion 45 is formed such that its radially inner end portion 45a is positioned on the radially outer side of the radially inner end portion 44a of the seal lip portion 44, and is not in contact with the groove portion 12b of the inner ring 12. Acts as an auxiliary lip that forms a seal of contact.

以上、説明したように本実施形態のオイルシール２０によれば、芯金３０は、外輪１１の内周面に固定され径方向内側に延びる第一芯金３２と、第一芯金３２の径方向内側端部３２ａよりも軸方向内側に配置され径方向内側に延びる第二芯金３４と、を有しており、弾性体４０は、第一芯金３２の径方向内側端部３２ａと第二芯金３４の径方向外側端部３４ａとを接続する接続部４３と、第二芯金３４に固定され、その径方向内側端部４４ａが内輪の外周面に摺接するシールリップ部４４と、を有する。したがって、軸の偏心や傾きが発生した場合であっても、弾性体４０の接続部４３が軸の偏心や傾きに追従することによって、シールリップ部４４と内輪１２の外周面との接触を維持することが可能である。また、シールリップ部４４は、第二芯金３４に固定されるので、内輪１２の外周面とのしめしろ及び緊迫力を一定に保つことができ、良好なシール性能を発揮することが可能である。   As described above, according to the oil seal 20 of the present embodiment, the core metal 30 is fixed to the inner peripheral surface of the outer ring 11 and extends radially inward, and the diameter of the first core metal 32. A second cored bar 34 that is disposed on the inner side in the axial direction than the inner end 32a and extends inward in the radial direction, and the elastic body 40 includes a second inner end 32a of the first cored bar 32 and a second cored bar 34a. A connecting portion 43 that connects the radially outer end portion 34a of the double cored bar 34, a seal lip portion 44 that is fixed to the second cored bar 34 and whose radially inner end portion 44a is in sliding contact with the outer peripheral surface of the inner ring, Have Therefore, even if the shaft is eccentric or inclined, the contact portion 43 of the elastic body 40 follows the eccentricity or inclination of the shaft, so that the contact between the seal lip portion 44 and the outer peripheral surface of the inner ring 12 is maintained. Is possible. Further, since the seal lip portion 44 is fixed to the second cored bar 34, the interference with the outer peripheral surface of the inner ring 12 and the tightening force can be kept constant, and good sealing performance can be exhibited. is there.

また、第一芯金３２の径方向内側端部３２ａが第二芯金３４の径方向外側端部３４ａよりも径方向外側に位置し、弾性体４０の接続部４３が軸方向内側に向かうにしたがって径方向内側に傾斜する断面略直線形状であるので、軸の偏心や傾きが発生した場合、接続部４３が曲がり易く、軸の偏心や傾きに対する追従性を高めることが可能である。   Further, the radially inner end portion 32a of the first core metal 32 is positioned on the radially outer side of the radially outer end portion 34a of the second core metal 34, and the connecting portion 43 of the elastic body 40 is directed inward in the axial direction. Therefore, since the cross section is a substantially linear shape inclined inward in the radial direction, when the eccentricity or inclination of the shaft occurs, the connecting portion 43 is easily bent, and the followability to the eccentricity or inclination of the shaft can be improved.

なお、弾性体４０の接続部４３の形状は、図３に示すように、曲率を持った断面略曲線形状であってもよく、この場合、接続部４３が図２の形状よりも曲がり易く、軸の偏心や傾きに対する追従性をより高めることが可能である。さらに、図４に示すように、表面に凹凸が形成された断面略蛇腹形状（ベローズ形状）であってもよく、この場合、接続部４３が図３の形状よりもさらに曲がり易く、軸の偏心や傾きに対する追従性をさらに高めることが可能である。   As shown in FIG. 3, the shape of the connecting portion 43 of the elastic body 40 may be a substantially curved cross section having a curvature. In this case, the connecting portion 43 is easier to bend than the shape of FIG. It is possible to further improve the followability to the eccentricity and inclination of the shaft. Furthermore, as shown in FIG. 4, the surface may have a substantially bellows shape (bellows shape) with irregularities formed on the surface. In this case, the connecting portion 43 is more easily bent than the shape of FIG. Further, it is possible to further improve the followability to the inclination.

また、弾性体４０はバンパーリップ部４５を有するので、軸の傾きや偏心が起こった場合であっても、当該バンパーリップ部４５が内輪１２の外周面と緩衝し、シールリップ部４４の異常摩耗及び変形を防止することが可能である。   Further, since the elastic body 40 has the bumper lip portion 45, even when the shaft is tilted or decentered, the bumper lip portion 45 cushions against the outer peripheral surface of the inner ring 12 and the seal lip portion 44 is abnormally worn. It is possible to prevent deformation.

なお、本発明は、前述した各実施形態に限定されるものではなく、適宜、変形、改良、等が可能である。   In addition, this invention is not limited to each embodiment mentioned above, A deformation | transformation, improvement, etc. are possible suitably.

例えば、オイルシール２０の芯金３０は、外輪１１ではなく、内輪１２に固定しても構わない。この場合、第一芯金３２が内輪１２に固定され、第二芯金３４が外輪１１に摺接する。   For example, the core 30 of the oil seal 20 may be fixed to the inner ring 12 instead of the outer ring 11. In this case, the first cored bar 32 is fixed to the inner ring 12, and the second cored bar 34 is in sliding contact with the outer ring 11.

また、オイルシール２０が適用される転がり軸受としては、上述した自動調心ころ軸受１０に限定されず、図５に示すような円筒ころ軸受や、図６に示すような複列円錐ころ軸受、図７に示すような球面座付き複列円錐ころ軸受、図８に示すような球面座付き円筒ころ軸受、不図示の球面座付き複列円筒ころ軸受であってもよい。図７及び図８には、球面座８０の内周面に外輪１１が配置された状態が示されている。この場合、外輪１１及び当該外輪１１の径方向外側に配置された球面座８０が外方部材を構成する。   Further, the rolling bearing to which the oil seal 20 is applied is not limited to the self-aligning roller bearing 10 described above, but a cylindrical roller bearing as shown in FIG. 5, a double row conical roller bearing as shown in FIG. 7 may be a double row tapered roller bearing with a spherical seat as shown in FIG. 7, a cylindrical roller bearing with a spherical seat as shown in FIG. 8, or a double row cylindrical roller bearing with a spherical seat not shown. 7 and 8 show a state in which the outer ring 11 is arranged on the inner peripheral surface of the spherical seat 80. FIG. In this case, the outer ring 11 and the spherical seat 80 arranged on the outer side in the radial direction of the outer ring 11 constitute an outer member.

また、オイルシール２０が適用される転がり軸受としては、図９に示すような球面座付き複列円錐ころ軸受や、図１０に示すような球面座付き円筒ころ軸受であってもよい。これらの軸受では、内輪１２の外周面と、外輪１１の径方向外側に配置された球面座８０の内周面と、の間に存在する空間の軸方向端部開口を塞ぐように、オイルシール２０が形成されており、オイルシール２０の芯金３０が、球面座８０の内周面の軸方向外側端部に形成された溝部８０ａに圧入されて固定される。   The rolling bearing to which the oil seal 20 is applied may be a double row tapered roller bearing with a spherical seat as shown in FIG. 9 or a cylindrical roller bearing with a spherical seat as shown in FIG. In these bearings, an oil seal is formed so as to close the axial end opening of the space existing between the outer peripheral surface of the inner ring 12 and the inner peripheral surface of the spherical seat 80 disposed radially outside the outer ring 11. 20 is formed, and the metal core 30 of the oil seal 20 is press-fitted into and fixed to a groove 80a formed at the axially outer end of the inner peripheral surface of the spherical seat 80.

また、オイルシール２０が適用される転がり軸受としては、図１１に示すような鉄鋼設備用四列円錐ころ軸受や、図１２に示すような鉄鋼設備用四列円筒ころ軸受、図１３に示すような鉄鋼設備用ニ列円錐ころ軸受等であってもよい。これらの軸受では、内輪１２の外周面と、外輪１１の軸方向両側に配置されたシールホルダ９０の内周面と、の間に存在する空間の軸方向端部開口を塞ぐように、オイルシール２０が形成されており、オイルシール２０の芯金３０が、シールホルダ９０の内周面に圧入されて固定される。この場合、外輪１１及び当該外輪１１の軸方向外側に配置されたシールホルダ９０が外方部材を構成する。   Moreover, as a rolling bearing to which the oil seal 20 is applied, a four-row tapered roller bearing for steel facilities as shown in FIG. 11, a four-row cylindrical roller bearing for steel facilities as shown in FIG. 12, and as shown in FIG. It may be a double row tapered roller bearing for steel facilities. In these bearings, an oil seal is formed so as to close the axial end opening of the space existing between the outer peripheral surface of the inner ring 12 and the inner peripheral surfaces of the seal holders 90 disposed on both sides in the axial direction of the outer ring 11. 20 is formed, and the core 30 of the oil seal 20 is press-fitted into the inner peripheral surface of the seal holder 90 and fixed. In this case, the outer ring 11 and the seal holder 90 disposed on the outer side in the axial direction of the outer ring 11 constitute an outer member.

また、上述の実施形態においては、補助リップ部としてバンパーリップ部４５を設けるとしたが、外部からのダスト侵入を防止するダストリップ部としてもよい。また、補助リップ部は、必ずしも内輪１２の外周面に接触する構成に限られず、内輪１２の外周面との間でシールを形成する限り非接触であってもよい。また、補助リップ部を設けない構成としても構わない。   In the above-described embodiment, the bumper lip portion 45 is provided as the auxiliary lip portion. However, a dust lip portion that prevents dust from entering from the outside may be used. Further, the auxiliary lip portion is not necessarily limited to the configuration in contact with the outer peripheral surface of the inner ring 12, and may be non-contact as long as a seal is formed with the outer peripheral surface of the inner ring 12. Further, the auxiliary lip portion may not be provided.

また、本発明の転がり軸受は、連続鋳造機設備用、鉄鋼設備用に限定されるものではなく、他の産業機械にも適用可能である。   Further, the rolling bearing of the present invention is not limited to use for continuous casting machine equipment and steel equipment, but can be applied to other industrial machines.

１０ 自動調心ころ軸受（転がり軸受）
１１ 外輪（外方部材）
１１ａ 外輪軌道溝
１１ｂ 溝部
１２ 内輪（内方部材）
１２ａ 内輪軌道溝
１２ｂ 溝部
１３ 保持器
１４ ころ
１５ 貫通孔
２０ 転がり軸受用シール装置
３０ 芯金
３２ 第一芯金
３２ａ 径方向内側端部
３４ 第二芯金
３４ａ 径方向外側端部
３４ｂ 径方向内側端部
４０ 弾性体
４１ 第一延出部
４２ 第二延出部
４３ 接続部
４４ シールリップ部
４４ａ 径方向内側端部
４４ｂ 外周面
４５ バンパーリップ部（補助リップ部）
４５ａ 径方向内側端部
５０ スプリング
８０ 球面座（外方部材）
８０ａ 溝部
９０ シールホルダ（外方部材） 10 Spherical roller bearings (rolling bearings)
11 Outer ring (outer member)
11a Outer ring raceway groove 11b Groove 12 Inner ring (inner member)
12a Inner ring raceway groove 12b Groove part 13 Cage 14 Roller 15 Through hole 20 Rolling bearing seal device 30 Core metal 32 First metal core 32a Radial inner end 34 Second metal core 34a Radial outer end 34b Radial inner end Part 40 Elastic body 41 First extension part 42 Second extension part 43 Connection part 44 Seal lip part 44a Radial inner end part 44b Outer peripheral surface 45 Bumper lip part (auxiliary lip part)
45a Radial inner end 50 Spring 80 Spherical seat (outer member)
80a Groove 90 Seal holder (outer member)

Claims (5)

外方部材又は内方部材に固定される芯金と、前記芯金に固定される弾性体と、を備え、
前記芯金は、径方向に延びる第一芯金と、径方向に延びる第二芯金と、を有しており、
前記弾性体は、前記第一芯金と前記第二芯金とを接続する接続部と、前記第二芯金に固定され、内方部材又は外方部材に摺接するシールリップ部と、を有することを特徴とする転がり軸受用シール装置。 A core metal fixed to the outer member or the inner member, and an elastic body fixed to the core metal,
The metal core has a first metal core extending in the radial direction and a second metal core extending in the radial direction,
The elastic body includes a connection portion that connects the first core metal and the second core metal, and a seal lip portion that is fixed to the second core metal and that is in sliding contact with the inner member or the outer member. A rolling bearing sealing device characterized by that. 前記弾性体の接続部は、径方向断面が軸方向内側に傾斜する略直線形状、若しくは略曲線形状、又は略蛇腹形状であることを特徴とする請求項１に記載の転がり軸受用シール装置。   The rolling bearing seal device according to claim 1, wherein the connecting portion of the elastic body has a substantially linear shape, a substantially curved shape, or a substantially bellows shape in which a radial cross section is inclined inward in the axial direction. 前記弾性体は、前記第二芯金に固定されると共に前記シールリップ部よりも軸方向内側に位置し、前記内方部材又は前記外方部材との間で接触又は非接触のシールを形成する補助リップ部を有することを特徴とする請求項１又は２に記載の転がり軸受用シール装置。   The elastic body is fixed to the second core metal and is located on the inner side in the axial direction than the seal lip portion, and forms a contact or non-contact seal with the inner member or the outer member. The rolling bearing seal device according to claim 1, further comprising an auxiliary lip portion. 請求項１〜３の何れか１項に記載の転がり軸受用シール装置を備えることを特徴とする転がり軸受。   A rolling bearing comprising the rolling bearing seal device according to claim 1. 前記外方部材は、外輪、又は外輪及び該外輪の径方向外側に配置された球面座、又は外輪及び該外輪の軸方向外側に配置されたシールホルダであり、
前記内方部材は、内輪であることを特徴とする請求項１〜４の何れか１項に記載の転がり軸受。 The outer member is an outer ring, or a spherical seat arranged on the outer side in the radial direction of the outer ring and the outer ring, or a seal holder arranged on the outer side in the axial direction of the outer ring and the outer ring,
The rolling bearing according to any one of claims 1 to 4, wherein the inner member is an inner ring.
JP2013151872A 2013-07-22 2013-07-22 Seal device for rolling bearing and rolling bearing Pending JP2015021590A (en)

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CN201420361324.3U CN203962701U (en) 2013-07-22 2014-07-01 Seal arrangement and rolling bearing for rolling bearing
DE202014103365.3U DE202014103365U1 (en) 2013-07-22 2014-07-22 Roller bearing sealing device and roller bearing

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FR3060678B1 (en) * 2016-12-20 2019-12-20 Ntn-Snr Roulements ROLLING BEARING
JP7365757B2 (en) * 2017-01-23 2023-10-20 ナブテスコ株式会社 Seal structure of rotating machines and rotating machines
WO2024199666A1 (en) * 2023-03-31 2024-10-03 Aktiebolaget Skf An inner ring for a self-aligning roller bearing

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Publication number Priority date Publication date Assignee Title
WO2021030025A1 (en) * 2019-08-09 2021-02-18 Amsted Rail Company, Inc. Roller bearing seal case
US11885376B2 (en) 2019-08-09 2024-01-30 Amsted Rail Company, Inc. Roller bearing seal case

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