JP2007198540A - Roller bearing with seal - Google Patents

Roller bearing with seal Download PDF

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Publication number
JP2007198540A
JP2007198540A JP2006019400A JP2006019400A JP2007198540A JP 2007198540 A JP2007198540 A JP 2007198540A JP 2006019400 A JP2006019400 A JP 2006019400A JP 2006019400 A JP2006019400 A JP 2006019400A JP 2007198540 A JP2007198540 A JP 2007198540A
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Japan
Prior art keywords
seal
outer ring
inner ring
rolling bearing
bearing
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Pending
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JP2006019400A
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Japanese (ja)
Inventor
Mikiaki Betsumiya
幹朗 別宮
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NSK Ltd
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NSK Ltd
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Priority to JP2006019400A priority Critical patent/JP2007198540A/en
Publication of JP2007198540A publication Critical patent/JP2007198540A/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
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/46—Cages for rollers or needles
    • F16C33/48—Cages for rollers or needles for multiple rows of rollers or needles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—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
    • F16C33/7893—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a cage or integral therewith
    • 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
    • F16C19/34—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
    • 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
    • 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

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

Abstract

<P>PROBLEM TO BE SOLVED: To provide a roller bearing with a seal capable of preventing deformation of an outer ring, an inner ring, and the seal in an assembly process. <P>SOLUTION: The roller bearing 10 with the seal is provided with the outer ring 11, the inner ring 12, a plurality of rolling elements arranged between the outer ring and the inner ring, and a retainer 14 for retaining the plurality of rolling elements. Seal components 15, 16 for sealing shaft-ends of the bearing is fixed to the retainer. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、外輪と内輪との間に配置された複数の転動体を保持する保持器を備えるシール付き転がり軸受に関する。   The present invention relates to a rolling bearing with a seal including a cage that holds a plurality of rolling elements disposed between an outer ring and an inner ring.

シール付き転がり軸受は、軸受内部に封入した潤滑剤の漏洩や外部から軸受内部への異物の混入を防止するために、軸受の内輪と外輪との間が軸方向の端部においてシールにより塞がれている（例えば、下記特許文献１参照）。かかる従来のシール付き転がり軸受の例を図６，図７に示す。   Rolling bearings with seals are sealed between the inner and outer rings of the bearings with a seal at the axial end to prevent leakage of lubricant sealed inside the bearings and contamination from the outside. (For example, see Patent Document 1 below). Examples of such a conventional rolling bearing with seal are shown in FIGS.

図６の従来例は、一体型の自動調心ころ軸受であって、外輪５１と内輪５２との間において保持器５４の両側で２列に保持された複数のころ５３，５３を配置し、外輪５１の内周面の軸方向端部にシール係止のための周溝５１ａを締め代をとって設け、周溝５１ａにシール５５が取り付けられる。シール５５は、圧入部５５ａと、芯金部５５ｂと、リップ部５５ｃと、を有し、圧入部５５ａが外輪５１の周溝５１ａに圧入されことで嵌め込まれ、リップ部５５ｃが内輪５２の軸方向端部の傾斜した外周面５２ａに接触するようになっている。   The conventional example of FIG. 6 is an integral self-aligning roller bearing, and a plurality of rollers 53 and 53 held in two rows on both sides of the cage 54 between the outer ring 51 and the inner ring 52 are arranged, A circumferential groove 51a for locking the seal is provided at the axial end of the inner peripheral surface of the outer ring 51 with a margin for fastening, and a seal 55 is attached to the circumferential groove 51a. The seal 55 includes a press-fit portion 55 a, a core bar portion 55 b, and a lip portion 55 c, and the press-fit portion 55 a is fitted by being press-fitted into the circumferential groove 51 a of the outer ring 51, and the lip portion 55 c is the shaft of the inner ring 52. It comes in contact with the inclined outer peripheral surface 52a at the direction end.

図７の別の従来例でも、シール５６が圧入部５６ａと、芯金部５６ｂと、リップ部５６ｃと、を有し、圧入部５６ａが外輪５１の内周面５１ｂに圧入されことで嵌め込まれ、リップ部５６ｃが内輪５２の軸方向端部の平坦な外周面５２ｂに接触する。また、図６，図７のシール５５，５６では、圧入部５５ａ，５６ａを内輪５２側に設け、リップ部５５ｃ，５６ｃを外輪５１側に設けてもよい。
特開２０００−５５０６４号公報 In another conventional example of FIG. 7, the seal 56 has a press-fit portion 56 a, a core metal portion 56 b, and a lip portion 56 c, and the press-fit portion 56 a is fitted into the inner peripheral surface 51 b of the outer ring 51. The lip portion 56c contacts the flat outer peripheral surface 52b at the axial end portion of the inner ring 52. 6 and 7, the press-fit portions 55a and 56a may be provided on the inner ring 52 side, and the lip portions 55c and 56c may be provided on the outer ring 51 side.
JP 2000-55064 A

図６，図７のようなシール付き転がり軸受の組み立て工程においてシール５５，５６を組み込む際に、シール５５，５６を外輪５１の内周面に圧入し嵌め込むので、無理な力が加わり、外輪５１とシール５５，５６とが変形するおそれがある。シールを内輪の外周面に圧入し嵌め込む場合には、内輪とシールとが変形するおそれがある。   When assembling the seals 55 and 56 in the assembly process of the rolling bearing with seal as shown in FIGS. 6 and 7, the seals 55 and 56 are press-fitted and fitted into the inner peripheral surface of the outer ring 51. 51 and the seals 55 and 56 may be deformed. When the seal is press-fitted into the outer peripheral surface of the inner ring and fitted, the inner ring and the seal may be deformed.

本発明は、上述のような従来技術の問題に鑑み、組み立て工程において外輪、内輪及びシールの変形を防止できるシール付き転がり軸受を提供することを目的とする。   The present invention has been made in view of the above-described problems of the prior art, and an object thereof is to provide a rolling bearing with a seal that can prevent deformation of an outer ring, an inner ring, and a seal in an assembly process.

上記目的を達成するために、本発明によるシール付き転がり軸受は、外輪と、内輪と、前記外輪と前記内輪との間に配置された複数の転動体と、前記複数の転動体を保持するための保持器と、を備える転がり軸受であって、軸受の軸端部をシールするためのシール部品を前記保持器に固定するように構成したことを特徴とする。   In order to achieve the above object, a rolling bearing with a seal according to the present invention holds an outer ring, an inner ring, a plurality of rolling elements arranged between the outer ring and the inner ring, and the plurality of rolling elements. And a retainer for fixing a seal part for sealing the shaft end portion of the bearing to the retainer.

このシール付き転がり軸受によれば、シール部品を保持器に固定するので、従来のような組み立て工程におけるシールの圧入・嵌め込みが不要となる。このため、組み立て工程において外輪、内輪及びシールの変形を未然に防止できる。   According to this rolling bearing with a seal, since the sealing part is fixed to the cage, it is not necessary to press-fit / fit the seal in the conventional assembly process. For this reason, deformation of the outer ring, the inner ring and the seal can be prevented in the assembly process.

上記シール付き転がり軸受において前記シール部品をボルト等の締結部材により前記保持器の端部に取り付けるように構成できる。   In the above-mentioned rolling bearing with seal, the seal part can be configured to be attached to the end of the cage by a fastening member such as a bolt.

また、前記シール部品は前記外輪及び前記内輪の少なくとも一方に接触するリップ部を有するように構成できる。即ち、シール部品は、外輪側及び内輪側の両方にリップ部を有してよく、また、いずれか一方にリップ部を有し、他方が非接触部であってもよい。   Moreover, the said sealing component can be comprised so that it may have a lip part which contacts at least one of the said outer ring | wheel and the said inner ring | wheel. That is, the seal component may have a lip portion on both the outer ring side and the inner ring side, or may have a lip portion on one side and the other may be a non-contact portion.

また、前記シール部品が前記外輪及び前記内輪の両方に接触しない非接触部を有する構成も可能である。かかる構成は、従来の圧入・嵌め込みでは実現不可能なものであった。   Moreover, the structure which has the non-contact part which the said seal components do not contact both the said outer ring | wheel and the said inner ring | wheel is also possible. Such a configuration cannot be realized by conventional press-fitting and fitting.

また、前記シール部品の内側の軸受内部に潤滑剤が適用されていることが好ましい。   Moreover, it is preferable that a lubricant is applied to the inside of the bearing inside the seal component.

本発明のシール付き転がり軸受によれば、組み立て工程において外輪、内輪及びシールの変形を防止できる。   According to the rolling bearing with seal of the present invention, deformation of the outer ring, the inner ring and the seal can be prevented in the assembly process.

以下、本発明を実施するための最良の形態について図面を用いて説明する。図１は本実施の形態によるシール付き転がり軸受を示す断面図である。図２は図１の転がり軸受の側断面図である。   The best mode for carrying out the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view showing a rolling bearing with a seal according to the present embodiment. FIG. 2 is a side sectional view of the rolling bearing of FIG.

図１に示すように、シール付き転がり軸受１０は、外輪１１と、内輪１２と、外輪１１の軌道面１１ｂと内輪１２の各軌道面１２ｄ，１２ｅとの間に介在された複数の略たる状のころ１３，１３と、軸方向に延びて各ころ１３を均等位置に保持する円柱状の保持器１４と、を備える。ころ１３，１３は、軸方向略中央に配置されたガイド１９と内輪１２の両端のつば部１２ｂ、１２ｃとにより、２列に分割保持されている。   As shown in FIG. 1, the sealed rolling bearing 10 includes a plurality of substantially round shapes interposed between an outer ring 11, an inner ring 12, a raceway surface 11 b of the outer ring 11, and raceway surfaces 12 d and 12 e of the inner ring 12. Roller 13, 13, and a cylindrical retainer 14 that extends in the axial direction and holds each roller 13 in a uniform position. The rollers 13 and 13 are divided and held in two rows by a guide 19 disposed substantially at the center in the axial direction and flange portions 12b and 12c at both ends of the inner ring 12.

外輪１１の軌道面１１ｂはその曲率中心が軸受の中心軸上に位置するように形成されていることで、シール付き転がり軸受１０は、軸やハウジングのたわみや軸心の不一致が生じると自動的に調心されるようになっており、一体型の自動調心ころ軸受に構成される。   The raceway surface 11b of the outer ring 11 is formed so that the center of curvature is located on the center axis of the bearing, so that the rolling bearing 10 with seal is automatically operated when the shaft and housing are bent or the shaft centers are not matched. Therefore, it is configured as an integral self-aligning roller bearing.

転がり軸受１０の軸方向の両端部には、シール１５，１６が配置されている。図２に示すように、シール１５は、外輪１１の軸方向端部の内周面１１ａに接触するように先端が鋭角状に形成されたリップ部１５ａと、内輪１２の軸方向端部の外周面１２ａに接触するように先端が鋭角状に形成されたリップ部１５ｂと、金属材料からなる芯金部１５ｃと、を備え、中心に設けられた孔１５ｄを介してボルト１７が保持器１４の端面１４ａに形成されたねじ孔にねじ込まれることで固定されている。   Seals 15 and 16 are disposed at both ends in the axial direction of the rolling bearing 10. As shown in FIG. 2, the seal 15 includes a lip portion 15 a whose tip is formed in an acute angle so as to contact the inner peripheral surface 11 a of the axial end portion of the outer ring 11, and the outer periphery of the axial end portion of the inner ring 12. A lip portion 15b whose tip is formed in an acute angle so as to come into contact with the surface 12a, and a cored bar portion 15c made of a metal material, and a bolt 17 is attached to the cage 14 through a hole 15d provided in the center. It is fixed by being screwed into a screw hole formed in the end face 14a.

シール１６は、図２のシール１５と同様にリップ部１６ａとリップ部１６ｂと芯金部１６ｃとを備え、中心に設けられた孔を介してボルト１８が保持器１４の端面１４ｂに形成されたねじ孔にねじ込まれることで固定されている。シール１５，１６は、芯金部１５ｃ，１６ｃ以外は、ゴム材料または樹脂材料からなる。   The seal 16 includes a lip portion 16a, a lip portion 16b, and a cored bar portion 16c in the same manner as the seal 15 in FIG. 2, and a bolt 18 is formed on the end surface 14b of the cage 14 through a hole provided in the center. It is fixed by being screwed into the screw hole. The seals 15 and 16 are made of a rubber material or a resin material except for the cored bar portions 15c and 16c.

図１の転がり軸受１０の組み立て工程において外輪１１と内輪１２との間に形成される空間にグリース等の潤滑剤を充填した状態で、シール１５，１６をボルト１７，１８により保持器１４の端面１４ａ、１４ｂに取り付け固定する。これにより、シール１５，１６は、リップ部１５ａ、１５ｂ、１６ａ、１６ｂが外輪１１の内周面１１ａ、内輪１２の外周面１２ａに接触しかつ回転時に摺動可能に軸受内部を密封し、軸受内部に充填された潤滑剤が外部に漏れず、また、内部に異物が進入することを防止できる。   In the assembly process of the rolling bearing 10 in FIG. 1, the seals 15 and 16 are secured to the end surfaces of the cage 14 by bolts 17 and 18 in a state in which a space formed between the outer ring 11 and the inner ring 12 is filled with a lubricant such as grease. It is fixed to 14a and 14b. As a result, the seals 15 and 16 seal the inside of the bearing so that the lip portions 15a, 15b, 16a and 16b are in contact with the inner peripheral surface 11a of the outer ring 11 and the outer peripheral surface 12a of the inner ring 12 and are slidable during rotation. Lubricant filled inside does not leak to the outside, and foreign matter can be prevented from entering inside.

上述のように、図１の転がり軸受１０は、軸受内部にグリース等の潤滑剤を充填したシール付き軸受に構成されているので、メンテナンスフリー効果を有し、潤滑剤を固形油にすれば更にメンテナンスフリー効果を得ることができる。   As described above, the rolling bearing 10 in FIG. 1 is configured as a bearing with a seal in which a lubricant such as grease is filled in the bearing, and therefore has a maintenance-free effect. A maintenance-free effect can be obtained.

以上のように、図１のシール付き転がり軸受１０によれば、シール１５，１６は、ボルト１７，１８により保持器１４に固定され、組み立て工程において、従来のように外輪または内輪に対し圧入・嵌め込みで固定されるものではないので、シール１５，１６自体の変形や外輪１１，内輪１２の変形を未然に防止できる。   As described above, according to the rolling bearing 10 with the seal of FIG. 1, the seals 15 and 16 are fixed to the retainer 14 by the bolts 17 and 18, and are pressed into the outer ring or the inner ring as in the past in the assembly process. Since it is not fixed by fitting, deformation of the seals 15 and 16 and deformation of the outer ring 11 and the inner ring 12 can be prevented in advance.

また、外輪（または内輪）に圧入・嵌め込みで取り付け、内輪（または外輪）にシールリップを摺動させる図６，図７のような通常のシールと比べ、図１のシール付き転がり軸受１０ではシール１５，１６のリップ部の滑り速度を０．４〜０．６倍に下げることができ、シールが損傷し難くなり、軸受寿命を延ばすことができる。   In addition, the rolling bearing 10 with seal of FIG. 1 has a seal as compared with the normal seal as shown in FIGS. 6 and 7 which is attached to the outer ring (or inner ring) by press-fitting and fitting and the seal lip is slid on the inner ring (or outer ring). The sliding speed of the lip portions of 15 and 16 can be reduced to 0.4 to 0.6 times, the seal becomes difficult to be damaged, and the bearing life can be extended.

次に、図１，図２のシールの変形例について図３，図４を参照して説明する。図３は、図１，図２のシールの第１変形例を示す側断面図である。図４は、図１，図２のシールの第２変形例を示す側断面図（ａ）及び第３変形例を示す側断面図（ｂ）である。   Next, a modified example of the seal of FIGS. 1 and 2 will be described with reference to FIGS. FIG. 3 is a side sectional view showing a first modification of the seal of FIGS. FIG. 4 is a side sectional view (a) showing a second modification of the seal of FIGS. 1 and 2 and a side sectional view (b) showing a third modification.

図３のシール２０は、図１，図２のシール１５と比べてリップ部の形状を変えた以外は同様に構成されており、リップ部２０ａ、２０ｂが外輪１１の軸方向端部の内周面１１ａ及び内輪１２の軸方向端部の外周面１２ａにそれぞれ接触すると、若干折れ曲がって傾いた状態となって、軸受内部を密封するようになっている。   The seal 20 in FIG. 3 is configured in the same manner as the seal 15 in FIGS. 1 and 2 except that the shape of the lip portion is changed. The lip portions 20a and 20b are the inner periphery of the axial end of the outer ring 11. When the surface 11a and the outer peripheral surface 12a of the end portion in the axial direction of the inner ring 12 are brought into contact with each other, they are slightly bent and inclined to seal the inside of the bearing.

図４（ａ）のシール２１は、リップなしの非接触タイプであり、外輪１１の内周面１１ａ及び内輪１２の外周面１２ａに対し非接触状態となるように形成された非接触部２１ａ、２１ｂと、金属材料からなる芯金部２１ｃと、を備え、中心に設けられた孔２１ｄを介して図１と同様のボルトにより保持器１４の端面１４ａ、１４ｂに形成されたねじ孔にねじ込まれることで固定できる。   The seal 21 in FIG. 4A is a non-contact type without a lip, and a non-contact portion 21a formed so as to be in a non-contact state with respect to the inner peripheral surface 11a of the outer ring 11 and the outer peripheral surface 12a of the inner ring 12. 21b and a cored bar portion 21c made of a metal material, and screwed into screw holes formed in the end surfaces 14a and 14b of the retainer 14 by a bolt similar to FIG. 1 through a hole 21d provided in the center. Can be fixed.

図４（ｂ）のシール２２は、図４（ａ）のシール２１と同様にリップなしの非接触タイプであるが、芯金部２１ｃを省略しており、外輪１１の内周面１１ａ及び内輪１２の外周面１２ａに対し非接触状態となるように形成された非接触部２１ａ、２１ｂを備え、中心に設けられた孔２２ｄを介して図１と同様のボルトにより保持器１４の端面１４ａ、１４ｂに形成されたねじ孔にねじ込まれることで固定できる。   The seal 22 of FIG. 4B is a non-contact type without a lip like the seal 21 of FIG. 4A, but the cored bar 21c is omitted, and the inner peripheral surface 11a and the inner ring of the outer ring 11 are omitted. 12 is provided with non-contact portions 21a and 21b formed so as to be in a non-contact state with respect to the outer peripheral surface 12a of the twelve, and the end surface 14a of the retainer 14 by a bolt similar to FIG. It can fix by screwing in the screw hole formed in 14b.

図４（ａ）、（ｂ）の非接触タイプのシール２１，２２を用いたシール付き軸受によれば、特に高速回転や低トルクの場合に適用でき、リップなしのシールドタイプとして用いることができ、従来の圧入・嵌め込みタイプのシールでは実現不可能なものであったが、シール１５，１６をボルト等で保持器１４に固定する構成により可能となったものである。   The sealed bearings using the non-contact type seals 21 and 22 shown in FIGS. 4A and 4B can be applied particularly to high-speed rotation and low torque, and can be used as a shield type without a lip. The conventional press-fit / fit-in type seal cannot be realized, but can be realized by a configuration in which the seals 15 and 16 are fixed to the cage 14 with bolts or the like.

次に、本実施の形態によるシール付き転がり軸受の別の例について図５を参照して説明する。図５は、本実施の形態によるシール付き転がり軸受の別の例を示す断面図である。   Next, another example of the rolling bearing with seal according to the present embodiment will be described with reference to FIG. FIG. 5 is a sectional view showing another example of the rolling bearing with seal according to the present embodiment.

図５のシール付き転がり軸受３０は、外輪３１と、内輪３２と、外輪３１と内輪３２との間に配置された複数の円筒ころ３３と、各円筒ころ３３を均等位置に保持する円柱状の保持器３４と、を備え、円筒ころ３３が外輪３１の両端のつば部３１ｂ、３１ｃの間で案内可能に保持され、または円筒ころ３３で保持（ころ案内）されるようにし、単列に配列されており、円筒ころ軸受に構成されている。   5 has an outer ring 31, an inner ring 32, a plurality of cylindrical rollers 33 disposed between the outer ring 31 and the inner ring 32, and a columnar shape that holds the cylindrical rollers 33 at equal positions. A retainer 34, and the cylindrical rollers 33 are held so that they can be guided between the flange portions 31b and 31c at both ends of the outer ring 31, or are held by the cylindrical rollers 33 (roller guide), and are arranged in a single row. It is configured as a cylindrical roller bearing.

転がり軸受３０の軸方向の両端部には、シール３５，３６が配置されている。シール３５は、外輪３１の軸方向端部の内周面３１ａに接触するように先端が鋭角状に形成されたリップ部３５ａと、内輪３２の軸方向端部の外周面３２ａに接触するように先端が鋭角状に形成されたリップ部３５ｂと、金属材料からなる芯金部３５ｃと、を備え、孔を介してボルト３７が保持器３４の端面３４ａに形成されたねじ孔にねじ込まれることで固定されている。   Seals 35 and 36 are disposed at both ends in the axial direction of the rolling bearing 30. The seal 35 is in contact with the outer peripheral surface 32a at the axial end portion of the inner ring 32 and the lip portion 35a whose tip is formed in an acute angle so as to contact the inner peripheral surface 31a at the axial end portion of the outer ring 31. By including a lip portion 35b having a sharp tip at the tip and a cored bar portion 35c made of a metal material, the bolt 37 is screwed into a screw hole formed in the end surface 34a of the cage 34 through the hole. It is fixed.

シール３６は、シール３５と同様にリップ部３６ａとリップ部３６ｂと芯金部３６ｃとを備え、中心に設けられた孔を介してボルト３８が保持器３４の端面３４ｂに形成されたねじ孔にねじ込まれることで固定されている。シール３５，３６は、芯金部３５ｃ，３６ｃ以外は、ゴム材料または樹脂材料からなる。   Like the seal 35, the seal 36 includes a lip portion 36a, a lip portion 36b, and a metal core portion 36c, and a bolt 38 is formed in a screw hole formed in the end surface 34b of the retainer 34 through a hole provided in the center. It is fixed by screwing. The seals 35 and 36 are made of a rubber material or a resin material except for the cored bar portions 35c and 36c.

図５の転がり軸受３０の組み立て工程において外輪３１と内輪３２との間に形成される空間にグリース等の潤滑剤を充填した状態で、シール３５，３６をボルト３７，３８により保持器３４の端面３４ａ、３４ｂに取り付け固定する。これにより、シール３５，３６は、リップ部３５ａ、３５ｂ、３６ａ、３６ｂが外輪３１の内周面３１ａ、内輪３２の外周面３２ａに接触しかつ回転時に摺動可能に軸受内部を密封し、軸受内部に充填された潤滑剤が外部に漏れず、また、内部に異物が進入することを防止できる。   In the assembly process of the rolling bearing 30 in FIG. 5, the seals 35 and 36 are secured to the end faces of the cage 34 by bolts 37 and 38 in a state where a lubricant such as grease is filled in the space formed between the outer ring 31 and the inner ring 32. It is fixed to 34a and 34b. As a result, the seals 35, 36 seal the inside of the bearing so that the lip portions 35a, 35b, 36a, 36b are in contact with the inner peripheral surface 31a of the outer ring 31 and the outer peripheral surface 32a of the inner ring 32 and are slidable during rotation. Lubricant filled inside does not leak to the outside, and foreign matter can be prevented from entering inside.

上述のように、図５の転がり軸受３０は、軸受内部にグリース等の潤滑剤を充填したシール付き軸受に構成されているので、メンテナンスフリー効果を有し、潤滑剤を固形油にすれば更にメンテナンスフリー効果を得ることができる。   As described above, the rolling bearing 30 in FIG. 5 is configured as a bearing with a seal in which a lubricant such as grease is filled in the bearing, and therefore has a maintenance-free effect. A maintenance-free effect can be obtained.

図５のシール付き転がり軸受３０によれば、シール３５，３６は、ボルト３７，３８により保持器３４に固定され、組み立て工程において、従来のように外輪または内輪に対し圧入・嵌め込みで固定されるものではないので、シール３５，３６自体の変形や外輪３１，内輪３２の変形を未然に防止できる。   According to the rolling bearing 30 with seal of FIG. 5, the seals 35 and 36 are fixed to the retainer 34 by bolts 37 and 38, and are fixed to the outer ring or inner ring by press-fitting and fitting as in the conventional process. Therefore, the deformation of the seals 35 and 36 and the deformation of the outer ring 31 and the inner ring 32 can be prevented in advance.

以上のように本発明を実施するための最良の形態について説明したが、本発明はこれらに限定されるものではなく、本発明の技術的思想の範囲内で各種の変形が可能である。例えば、図２，図３のシール１５，１６，２０において、リップ部１５ａ、１５ｂ（１６ａ、１６ｂ）のいずれか一方、リップ部２０ａ、２０ｂのいずれか一方を、リップなしの非接触部に構成してもよい。同様に、図５のシール３５，３６において、リップ部３５ａ、３５ｂ（３６ａ、３６ｂ）のいずれか一方をリップなしの非接触部に構成してもよい。   As described above, the best mode for carrying out the present invention has been described. However, the present invention is not limited to these, and various modifications are possible within the scope of the technical idea of the present invention. For example, in the seals 15, 16, and 20 shown in FIGS. 2 and 3, any one of the lip portions 15a and 15b (16a and 16b) and any one of the lip portions 20a and 20b is configured as a non-contact portion without a lip. May be. Similarly, in the seals 35 and 36 of FIG. 5, any one of the lip portions 35a and 35b (36a and 36b) may be configured as a non-contact portion without a lip.

また、図５においてシールを図４（ａ）、（ｂ）のようなリップなしの非接触タイプに構成してもよい。   Further, in FIG. 5, the seal may be configured as a non-contact type without a lip as shown in FIGS. 4 (a) and 4 (b).

本実施の形態によるシール付き転がり軸受を示す断面図である。It is sectional drawing which shows the rolling bearing with a seal | sticker by this Embodiment. 図１の転がり軸受の側断面図である。It is a sectional side view of the rolling bearing of FIG. 図１，図２のシールの第１変形例を示す側断面図である。It is a sectional side view which shows the 1st modification of the seal | sticker of FIG. 1, FIG. 図１，図２のシールの第２変形例を示す側断面図（ａ）及び第３変形例を示す側断面図（ｂ）である。It is the side sectional view (a) which shows the 2nd modification of the seal of Drawing 1 and Drawing 2, and the side sectional view (b) which shows the 3rd modification. 本実施の形態によるシール付き転がり軸受の別の例を示す断面図である。It is sectional drawing which shows another example of the rolling bearing with a seal | sticker by this Embodiment. 従来のシール付き転がり軸受の例を示す図である。It is a figure which shows the example of the conventional rolling bearing with a seal. 従来のシール付き転がり軸受の別の例を示す図である。It is a figure which shows another example of the conventional rolling bearing with a seal.

符号の説明Explanation of symbols

１０ シール付き転がり軸受、自動調心ころ軸受
１１ 外輪
１１ａ 内周面
１２ 内輪
１２ａ 外周面
１３ ころ（転動体）
１４ 保持器
１４ａ，１４ｂ 端面
１５，１６ シール（シール部品）
１５ａ，１５ｂ リップ部
１６ａ，１６ｂ リップ部
１７，１８ ボルト
２０ シール（シール部品）
２０ａ，２０ｂ リップ部
２１，２２ シール（シール部品）
２１ａ，２１ｂ，２２ａ，２２ｂ 非接触部
３０ シール付き転がり軸受、円筒ころ軸受
３１ 外輪
３１ａ 内周面
３２ 内輪
３２ａ 外周面
３３ 円筒ころ（転動体）
３４ 保持器
３４ａ，３４ｂ 端面
３５，３６ シール（シール部品）
３５ａ，３５ｂ，３６ａ，３６ｂ リップ部
３７，３８ ボルト

DESCRIPTION OF SYMBOLS 10 Rolling bearing with a seal, self-aligning roller bearing 11 Outer ring 11a Inner peripheral surface 12 Inner ring 12a Outer peripheral surface 13 Roller (rolling element)
14 Cage 14a, 14b End face 15, 16 Seal (seal part)
15a, 15b Lip part 16a, 16b Lip part 17, 18 Bolt 20 Seal (seal part)
20a, 20b Lip part 21, 22 Seal (seal part)
21a, 21b, 22a, 22b Non-contact part 30 Rolling bearing with seal, cylindrical roller bearing 31 Outer ring 31a Inner peripheral surface 32 Inner ring 32a Outer peripheral surface 33 Cylindrical roller (rolling element)
34 Cage 34a, 34b End face 35, 36 Seal (seal part)
35a, 35b, 36a, 36b Lip part 37, 38 bolt

Claims (5)

外輪と、内輪と、前記外輪と前記内輪との間に配置された複数の転動体と、前記複数の転動体を保持するための保持器と、を備える転がり軸受であって、
軸受の軸端部をシールするためのシール部品を前記保持器に固定するように構成したことを特徴とするシール付き転がり軸受。 A rolling bearing comprising an outer ring, an inner ring, a plurality of rolling elements disposed between the outer ring and the inner ring, and a cage for holding the plurality of rolling elements,
A rolling bearing with a seal, characterized in that a seal part for sealing the shaft end of the bearing is fixed to the cage. 前記シール部品を締結部材により前記保持器の端部に取り付けた請求項１に記載のシール付き転がり軸受。   The rolling bearing with a seal according to claim 1, wherein the seal part is attached to an end of the cage by a fastening member. 前記シール部品は前記外輪及び前記内輪の少なくとも一方に接触するリップ部を有する請求項１または２に記載のシール付き転がり軸受。   The rolling bearing with seal according to claim 1, wherein the seal part has a lip portion that contacts at least one of the outer ring and the inner ring. 前記シール部品は前記外輪及び前記内輪の両方に接触しない非接触部を有する請求項１または２に記載のシール付き転がり軸受。   The rolling bearing with seal according to claim 1 or 2, wherein the seal part has a non-contact portion that does not contact both the outer ring and the inner ring. 前記シール部品の内側の軸受内部に潤滑剤が適用されている請求項１乃至４のいずれか１項に記載のシール付き転がり軸受。

The rolling bearing with a seal according to any one of claims 1 to 4, wherein a lubricant is applied to the inside of the bearing inside the seal component.

JP2006019400A 2006-01-27 2006-01-27 Roller bearing with seal Pending JP2007198540A (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010007677A1 (en) * 2008-07-17 2010-01-21 三菱重工業株式会社 Bearing structure and wind power generator
WO2011027662A1 (en) 2009-09-07 2011-03-10 Ntn株式会社 Sealed rolling bearing
EP2808570A1 (en) 2013-05-31 2014-12-03 NTN-SNR Roulements Bearing provided with a sealing system
CN104728274A (en) * 2013-12-19 2015-06-24 Skf公司 Rolling bearing with a sealing unit
FR3029246A1 (en) * 2014-12-01 2016-06-03 Ntn-Snr Roulements CAGE FOR SPHERICAL ROLLER BEARING COMPRISING A DEFLECTOR, BEARING COMPRISING SUCH A CAGE AND METHOD FOR ASSEMBLING SUCH A BEARING
EP3029344A1 (en) 2014-12-01 2016-06-08 NTN-SNR Roulements Sealing and sealing system for bearings and bearing equipped with such sealings and sealing systems
CN110529494A (en) * 2019-08-09 2019-12-03 双钱集团（江苏）轮胎有限公司 A kind of bearing equipped with holding frame mechanism
CN110905915A (en) * 2018-09-18 2020-03-24 斯凯孚公司 Self-aligning roller bearing

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010007677A1 (en) * 2008-07-17 2010-01-21 三菱重工業株式会社 Bearing structure and wind power generator
WO2011027662A1 (en) 2009-09-07 2011-03-10 Ntn株式会社 Sealed rolling bearing
EP2808570A1 (en) 2013-05-31 2014-12-03 NTN-SNR Roulements Bearing provided with a sealing system
US9739313B2 (en) 2013-12-19 2017-08-22 Aktiebolaget Skf Rolling-element bearing including seal unit
CN104728274A (en) * 2013-12-19 2015-06-24 Skf公司 Rolling bearing with a sealing unit
DE102013226554A1 (en) * 2013-12-19 2015-06-25 Aktiebolaget Skf Rolling bearing with sealing unit
EP2886895A3 (en) * 2013-12-19 2015-07-08 Aktiebolaget SKF Rolling bearing with a sealing unit
DE102013226554B4 (en) * 2013-12-19 2021-02-11 Aktiebolaget Skf Rolling bearing with sealing unit
FR3029246A1 (en) * 2014-12-01 2016-06-03 Ntn-Snr Roulements CAGE FOR SPHERICAL ROLLER BEARING COMPRISING A DEFLECTOR, BEARING COMPRISING SUCH A CAGE AND METHOD FOR ASSEMBLING SUCH A BEARING
EP3029344A1 (en) 2014-12-01 2016-06-08 NTN-SNR Roulements Sealing and sealing system for bearings and bearing equipped with such sealings and sealing systems
CN110905915A (en) * 2018-09-18 2020-03-24 斯凯孚公司 Self-aligning roller bearing
US10753390B2 (en) * 2018-09-18 2020-08-25 Aktiebolaget Skf Self-aligning roller bearing
CN110905915B (en) * 2018-09-18 2023-08-18 斯凯孚公司 Self-aligning roller bearing
CN110529494A (en) * 2019-08-09 2019-12-03 双钱集团（江苏）轮胎有限公司 A kind of bearing equipped with holding frame mechanism

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