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JP2014137097A - Rolling bearing, and bearing unit - Google Patents

Rolling bearing, and bearing unit Download PDF

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Publication number
JP2014137097A
JP2014137097A JP2013005692A JP2013005692A JP2014137097A JP 2014137097 A JP2014137097 A JP 2014137097A JP 2013005692 A JP2013005692 A JP 2013005692A JP 2013005692 A JP2013005692 A JP 2013005692A JP 2014137097 A JP2014137097 A JP 2014137097A
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Japan
Prior art keywords
rings
bearing
rolling
peripheral portion
ring
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JP2013005692A
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Japanese (ja)
Inventor
Yoichi Nakamura
陽一 中村
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Nachi Fujikoshi Corp
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Nachi Fujikoshi Corp
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Priority to JP2013005692A priority Critical patent/JP2014137097A/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
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/14—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load
    • F16C19/16—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with a single row of balls
    • F16C19/163—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with a single row of balls with angular contact
    • 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
    • F16C33/58—Raceways; Race rings
    • F16C33/583—Details of specific parts of races
    • F16C33/586—Details of specific parts of races outside the space between the races, e.g. end faces or bore of inner ring
    • 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
    • F16C33/58—Raceways; Race rings
    • F16C33/60—Raceways; Race rings divided or split, e.g. comprising two juxtaposed rings
    • 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
    • F16C43/00—Assembling bearings
    • F16C43/04—Assembling rolling-contact 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
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/14—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load
    • F16C19/18—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls
    • F16C19/181—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact
    • F16C19/183—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles
    • F16C19/184—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles in O-arrangement
    • 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
    • F16C19/54—Systems consisting of a plurality of bearings with rolling friction
    • F16C19/541—Systems consisting of juxtaposed rolling bearings including at least one angular contact bearing
    • F16C19/542—Systems consisting of juxtaposed rolling bearings including at least one angular contact bearing with two rolling bearings with angular contact
    • F16C19/543—Systems consisting of juxtaposed rolling bearings including at least one angular contact bearing with two rolling bearings with angular contact 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
    • F16C2226/00—Joining parts; Fastening; Assembling or mounting parts
    • F16C2226/50—Positive connections
    • F16C2226/60—Positive connections with threaded parts, e.g. bolt and nut connections

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)
  • Mounting Of Bearings Or Others (AREA)

Abstract

PROBLEM TO BE SOLVED: To enable multiple-rows assembling or assembling of the front/back alignment by integrating separated bearing rings with screw fitting so as to make the bearing rings in common.SOLUTION: In a rolling bearing 1, inner peripheral parts 7 of inner rings 3, outer peripheral parts 8 of outer rings 5, and at least any one set out of a set of screws 11a, 12a and a set of screws of 11b, 12b provided along both side inner surfaces of the inner peripheral parts or both side outer surfaces of the outer peripheral parts are provided. There is provided: a hollow fixing male screw 13 which is mutually screwed with a screw on the side where the inner rings abut on each other, to couple and fix the inner rings; or a fixing nut 15 on the side where the outer rings abut on each other, to couple and fix the outer rings. An inner diametrical position 14 of the hollow fixing male screw is larger than that of the inner peripheral part, and an outer diametrical position 16 of the fixing nut is smaller than that of the outer peripheral part. The rolling bearing is an angular contact ball bearing. Further, a shim is provided between the abutting surfaces.

Description

本発明は、複数のころがり軸受や、アンギュラ玉軸受・円錐ころ軸受等の軸方向に予圧を与えて使用するころがり軸受、および軸受ユニットに関する。   The present invention relates to a rolling bearing and a bearing unit that are used by applying a preload in the axial direction, such as a plurality of rolling bearings, an angular ball bearing, and a tapered roller bearing.

従来、複列ころがり軸受は外輪又は内輪の一部又は全部が軸方向に分離可能にされているので、搬送時や取扱時において、分離しやすいという問題があった。また、アンギュラ玉軸受や円錐ころ軸受の使用にあたっては、予圧を与えて使用する。しかし、軸受の取り付け時に都度予圧をチェックしながら組付けなければならないという問題があった。   Conventionally, a double row rolling bearing has a problem that part or all of an outer ring or an inner ring can be separated in the axial direction, so that it can be easily separated at the time of conveyance and handling. Also, when using angular ball bearings or tapered roller bearings, a preload is applied. However, there has been a problem that it must be assembled while checking the preload each time the bearing is installed.

そこで、特許文献１においては、軸方向に分離された軌道輪の互いに向かい合う端部をインロー嵌合させ、インロー部の内外ねじ部を互いに螺合させて一体化している。また、軌道輪の突き合わせ部に調整シムを介在させて、予圧調整を行っている。   Therefore, in Patent Document 1, the end portions of the raceway rings that are separated in the axial direction are fitted together, and the inner and outer threaded portions of the inner portion are screwed together to be integrated. In addition, preload adjustment is performed by interposing an adjustment shim at the abutting portion of the raceway.

しかし、このものでは、互いに嵌合するインロー部を設けるため、一体化される軌道輪は同一とすることができず、二種類の軌道輪を必要とする。そこで、例えば、引用文献２のように、互いに当接する一対の内輪の当接部半径方向の内周にねじ部を設け、両ねじ部に螺合する環状の固定部材により、一対の内輪を締結して、内輪を一体化させることにより、同一形状の内輪を用いることができる。   However, in this case, since the inlay portions that are fitted to each other are provided, the integrated race rings cannot be the same, and two types of race rings are required. Therefore, for example, as in Reference 2, a pair of inner rings are fastened by an annular fixing member that is provided with a threaded portion on the inner periphery in the radial direction of a contact portion of a pair of inner rings that are in contact with each other. By integrating the inner rings, the inner rings having the same shape can be used.

特開２００９−２７５７９２号公報JP 2009-275792 A 特開平９−２１７７５０号公報JP-A-9-217750

かかる従来の軌道輪においては、単列あるいは複列の軌道輪の締結は可能である。しかし、さらに多列の場合や、正面合わせあるいは背面合わせの軌道輪を共通化することはできない。本発明の課題は、かかる問題点に鑑みて、分離された軌道輪をねじ嵌合により一体化可能にするとともに、軌道輪を共通化でき、さらには、多列を可能とし、背面、正面合わせの組付けが可能なころがり軸受及び軸受ユニットを提供することである。   In such a conventional race ring, a single row or double row race ring can be fastened. However, in the case of more rows, it is not possible to share the front-to-back or back-to-back race rings. In view of such a problem, the object of the present invention is to make it possible to integrate the separated race rings by screw fitting, to share the race rings, and to allow multiple rows, back and front alignment It is an object to provide a rolling bearing and a bearing unit that can be assembled.

本発明においては、内輪と、外輪と、前記内外輪の軌道間を転動可能にされた転動体を有するころがり軸受において、前記内輪の軸挿入穴を形成する内周部と、前記外輪の穴挿入軸を形成する外周部と、前記内周部の両側面内周に沿って設けられたねじ長さを除き同諸元の一組のねじ、又は前記外周部の両側外周に沿って設けられたねじ長さを除き同諸元の一組のねじの少なくとも何れか一組と、を有するころがり軸受を提供することにより前述した課題を解決した。   In the present invention, in a rolling bearing having an inner ring, an outer ring, and a rolling element capable of rolling between the races of the inner and outer rings, an inner peripheral portion that forms a shaft insertion hole of the inner ring, and a hole in the outer ring Except for the outer periphery that forms the insertion shaft and the screw length provided along the inner periphery of both sides of the inner periphery, a set of screws of the same specifications, or provided along the outer periphery of both sides of the outer periphery The above-mentioned problems have been solved by providing a rolling bearing having at least one of a set of screws of the same specifications except for the length of the screw.

即ち、内輪又は外輪の少なくとも一方の軌道輪の両側面の内周面（外輪）又は外周面(内輪)にねじ部を設けたころがり軸受とした。このころがり軸受のねじ部を利用して軸方向に環状の固定部材を螺着させ、複数の軌道輪を固定し、複数の転がり軸受を固定することができる。   That is, the rolling bearing is provided with a threaded portion on the inner peripheral surface (outer ring) or outer peripheral surface (inner ring) on both side surfaces of at least one of the inner ring and the outer ring. An annular fixing member can be screwed in the axial direction using the threaded portion of the rolling bearing, a plurality of race rings can be fixed, and a plurality of rolling bearings can be fixed.

かかるころがり軸受は、特許文献２のような円錐ころ軸受にも適用できるが、左右の軌道輪形状がほぼ対称の玉軸受に適している。そこで、請求項２に記載の発明においては、前記ころがり軸受はアンギュラ玉軸受とした。   Such a rolling bearing can be applied to a tapered roller bearing as disclosed in Patent Document 2, but is suitable for a ball bearing in which left and right bearing ring shapes are substantially symmetrical. Therefore, in the invention according to claim 2, the rolling bearing is an angular ball bearing.

さらに、請求項３に記載の発明においては、請求項１又は２に記載の転動体を複数列有し、前記外輪又は内輪が複数設けられた軸受ユニットであって、前記複数設けられた外輪又は内輪の互いに当接する側の前記ねじに相互に螺着され前記内輪を結合固定する固定用中空おねじ、又は、前記外輪を結合固定する固定用ナットと、を有し、前記固定用中空おねじの内径が前記内周部より大きく、前記固定用ナットの外径が前記外周部より小さくされている軸受ユニットを提供する。   Furthermore, in the invention described in claim 3, there is provided a bearing unit having a plurality of rolling elements according to claim 1 or 2 and provided with a plurality of outer rings or inner rings, wherein the outer ring or A fixing hollow male screw that is screwed to the screws on the abutting sides of the inner ring and that fixes the inner ring, or a fixing nut that connects and fixes the outer ring, and the fixing hollow male screw A bearing unit in which the inner diameter of the fixing nut is larger than the inner peripheral portion and the outer diameter of the fixing nut is smaller than the outer peripheral portion.

軌道輪の両端にねじ部に螺合する固定用中空おねじ、又は、固定用ナットにより固定する。固定用中空おねじの内径を内周部より大きくして、嵌合軸との干渉を避ける。また、固定用ナットの外径が外周部より小さくして、嵌合穴との干渉を避ける。   It is fixed with a fixing hollow male screw that is screwed into both ends of the raceway or a fixing nut. The inner diameter of the fixing hollow male screw is made larger than the inner periphery to avoid interference with the fitting shaft. Further, the outer diameter of the fixing nut is made smaller than that of the outer peripheral portion to avoid interference with the fitting hole.

また、請求項４に記載の発明においては、前記当接面間にシムを設けた。これにより、適切な予圧を与えることができる。   In the invention according to claim 4, a shim is provided between the contact surfaces. Thereby, a suitable preload can be given.

さらに、内外輪の一方のみが一体でもよい。そこで、請求項５に記載の発明においては、 前記ころがり軸受のうち、隣り合う二列の外輪が一体にされ、前記内輪が二分割され、前記内輪の互いに当接する側の前記ねじに相互に螺着され前記内輪を結合固定する固定用中空おねじと、前記固定用中空おねじの内径が前記内周部より大きくされているころがり軸受とした。さらにまた、請求項６に記載の発明においては、前記軸受ユニットのうち、隣り合う二列の外輪が一体にされ、前記内輪が二分割され、前記内輪の互いに当接する側の前記ねじに相互に螺着され前記内輪を結合固定する固定用中空おねじと、前記固定用中空おねじの内径が前記内周部より大きくされている軸受ユニットとした。   Furthermore, only one of the inner and outer rings may be integrated. Therefore, in the invention according to claim 5, of the rolling bearings, adjacent two rows of outer rings are integrated, the inner ring is divided into two, and the inner rings are screwed to each other on the side of the inner ring that contacts each other. A fixed hollow male screw that is fixedly attached to the inner ring and a rolling bearing in which an inner diameter of the fixing hollow male screw is larger than that of the inner peripheral portion. Furthermore, in the invention according to claim 6, of the bearing units, two adjacent rows of outer rings are integrated, the inner ring is divided into two parts, and the screws on the side where the inner rings abut each other are mutually connected. A fixing hollow male screw that is screwed to join and fix the inner ring, and a bearing unit in which an inner diameter of the fixing hollow male screw is larger than that of the inner peripheral portion.

本発明においては、内輪又は外輪の少なくとも一方の軌道輪の両側面の内周面又は外周面にねじ部を設けたころがり軸受のねじ部を利用して軸方向に環状の固定部材を螺着させ、複数の軌道輪を固定し、複数の転がり軸受を固定できるようにしたので、軌道輪を共通化でき、さらには、多列を可能とし、背面、正面合わせの組付けが可能となった。また、請求項３に記載の発明においては、軸受を取り付ける穴又は軸とは干渉しないように固定用中空おねじ、又は、固定用ナットにより固定した軸受ユニットとすることができるので、軸受の分離もなく取り扱いやすいものとなった。   In the present invention, an annular fixing member is screwed in the axial direction using the threaded portion of a rolling bearing provided with a threaded portion on the inner peripheral surface or the outer peripheral surface of both side surfaces of at least one of the inner ring and the outer ring. Since a plurality of bearing rings can be fixed and a plurality of rolling bearings can be fixed, the bearing rings can be used in common, and moreover, multiple rows can be assembled, and the back and front can be assembled. In the invention according to claim 3, since it can be a bearing unit fixed with a fixing hollow male screw or a fixing nut so as not to interfere with a hole or a shaft to which the bearing is attached, the bearing is separated. It became easy to handle.

また、請求項２に記載の発明においては、アンギュラ玉軸受としたので、広範な応用が可能となった。さらに、シムにより適切な予圧を与えることができるので、予め適切な予圧を与えた状態で軸受ユニットを提供でき、現地での予圧調整が不要となる（請求項４）。   Moreover, in the invention described in claim 2, since it is an angular ball bearing, a wide range of applications is possible. Furthermore, since an appropriate preload can be applied by the shim, the bearing unit can be provided in a state in which an appropriate preload has been applied in advance, and no on-site preload adjustment is required (claim 4).

さらに、請求項５、６に記載の発明においては、隣り合う二列の外輪が一体にされたころがり軸受及び軸受ユニットにも適用でき、種々の応用が可能なものとなった。   Furthermore, the inventions according to claims 5 and 6 can be applied to a rolling bearing and a bearing unit in which two adjacent outer rings are integrated, and various applications are possible.

本発明の実施の形態を示す軸受ユニットの上半分部分断面図である。It is an upper half partial sectional view of a bearing unit showing an embodiment of the invention. 本発明の他の実施の形態を示す軸受ユニットの上半分部分断面図である。It is an upper half partial sectional view of a bearing unit showing other embodiments of the present invention.

本発明の実施の形態について図面を参照して説明する。図１に示すように、本実施の形態の軸受ユニット１０は、同一形状の２個のアンギュラ玉軸受１，１を正面合わせにしたものである。アンギュラ玉軸受１，１は、外周に軌道２、２が設けられた環状の内輪３，３と、内周に軌道４、４が設けられた環状の外輪５，５と、内外輪の軌道間を転動可能にされた転動体(玉)６，６を有する。内輪３，３の内周部７，７が軸挿入穴を形成する。外輪５，５の外周部８，８が穴挿入軸を形成する。   Embodiments of the present invention will be described with reference to the drawings. As shown in FIG. 1, a bearing unit 10 according to the present embodiment is obtained by front-facing two angular ball bearings 1 and 1 having the same shape. Angular contact ball bearings 1 and 1 include annular inner rings 3 and 3 provided with raceways 2 and 2 on the outer periphery, annular outer rings 5 and 5 provided with raceways 4 and 4 on the inner periphery, and the raceway between the inner and outer rings. Has rolling elements (balls) 6 and 6 that can be rolled. Inner circumferential portions 7, 7 of the inner rings 3, 3 form shaft insertion holes. The outer peripheral portions 8 and 8 of the outer rings 5 and 5 form a hole insertion shaft.

内周部７，７の両側面内周に沿って一組の雌ねじ１１ａ，１１ｂ，１１ｂ，１１ａが設けられている。雌ねじ１１ａ，１１ｂは同諸元とされている。外周部８，８の両側面外周に沿って一組の雄ねじ１２ａ，１２ｂ，１２ｂ，１２ａが設けられている。雄ねじ１２ａ，１２ｂは同諸元とされている。なお、雄ねじ、雌ねじともねじ長さは異なっていてもよい。   A pair of female screws 11a, 11b, 11b, and 11a are provided along the inner periphery of both side surfaces of the inner peripheral portions 7 and 7. The female screws 11a and 11b have the same specifications. A set of male screws 12a, 12b, 12b, and 12a are provided along the outer periphery of both side surfaces of the outer peripheral portions 8 and 8. The male screws 12a and 12b have the same specifications. Note that the screw lengths of the male screw and the female screw may be different.

内輪３，３の互いに当接する側の雌ねじ（図でみて中央）１１ｂ、１１ｂに相互に螺着され内輪を結合固定する固定用中空おねじ１３が設けられている。固定用中空おねじ１３の内径１４は内周部７，７より大きくされている。外輪５，５の互いに当接する側の雄ねじ（図でみて中央）１２ｂ、１２ｂに相互に螺着され外輪を結合固定する固定用ナット１５が設けられている。固定用ナット１５の外径１６は外周部８，８より小さくされている。さらに、軌道輪の当接面間にシムを設けることにより、予圧調整が可能である。   A fixing hollow male screw 13 is provided which is screwed to the internal threads 11b and 11b of the inner rings 3 and 3 on the side where the inner rings 3 and 3 come into contact with each other, and which joins and fixes the inner rings. The inner diameter 14 of the fixing hollow male screw 13 is larger than the inner peripheral portions 7 and 7. A fixing nut 15 is provided which is screwed to the external threads (center in the figure) 12b and 12b of the outer rings 5 and 5 which are in contact with each other and which couples and fixes the outer rings. The outer diameter 16 of the fixing nut 15 is smaller than the outer peripheral portions 8 and 8. Furthermore, preload adjustment is possible by providing shims between the contact surfaces of the races.

かかる軸受ユニット１０により、所定の予圧を与えて組付けることにより、搬送時の軸受部品の分離を防止し、現場での組付け調整が不要となる。また、正面合わせに対して背面合わせも同じ部品を用いて適宜おこなうことができる。さらに、同一形状の多数のアンギュラ玉軸受を固定用中空おねじ１３、固定用ナット１４を介して軸方向に組付け固定することができる。   Such a bearing unit 10 is applied with a predetermined preload to prevent separation of bearing parts during transportation, and no assembly adjustment on site is required. Further, the back-to-back alignment can be performed as appropriate using the same components with respect to the front-to-front alignment. Furthermore, a large number of angular ball bearings having the same shape can be assembled and fixed in the axial direction via the fixing hollow male screw 13 and the fixing nut 14.

次に、本発明の他の実施の形態について図面を参照して説明する。前述したと同様な構成については同符号を付し説明の一部又は全部を省略する。図２に示すように、本実施の形態の軸受ユニット２０は、複列（二列）アンギュラ玉軸受２１の外輪２５が一体にされ、同一形状の２個の内輪３，３を正面合わせにしたものである。かかる場合も、予圧を適宜与えたもので搬送でき、さらに、軸方向に同一の複列アンギュラ玉軸を固定用中空雄ねじ１３を介して軸方向に組付け固定することができる。なお、実施の形態においては、アンギュラ玉軸受について説明したが、円錐ころ軸受やその他のころがり軸受にも適宜適用できることはいうまでもない。   Next, another embodiment of the present invention will be described with reference to the drawings. The same components as those described above are denoted by the same reference numerals, and a part or all of the description is omitted. As shown in FIG. 2, in the bearing unit 20 of the present embodiment, the outer ring 25 of a double row (double row) angular ball bearing 21 is integrated, and two inner rings 3 and 3 having the same shape are face to face. Is. Even in such a case, it can be conveyed with a suitable preload, and the double row angular contact ball shaft that is the same in the axial direction can be assembled and fixed in the axial direction via the fixing hollow male screw 13. In the embodiment, the angular ball bearing has been described, but it goes without saying that the present invention can be applied to a tapered roller bearing and other rolling bearings as appropriate.

１、２１ ころがり軸受
２ 軌道（内輪）
３ 内輪
４ 軌道（外輪)
５、２５ 外輪
６ 転動体
７ 内周部
８ 外周部
１０、２０ 軸受ユニット
１１ａ、１１ｂ 雌ねじ
１２ａ、１２ｂ 雄ねじ
１３ 固定用中空おねじ
１４ 固定用中空おねじの内径
１５ 固定用ナット
１６ 固定用ナットの外径 1,21 Rolling bearing 2 Raceway (inner ring)
3 Inner ring 4 Track (outer ring)
5, 25 Outer ring 6 Rolling element 7 Inner peripheral portion 8 Outer peripheral portion 10, 20 Bearing unit 11a, 11b Female screw 12a, 12b Male screw 13 Fixing hollow male screw 14 Fixing hollow male screw inner diameter 15 Fixing nut 16 Fixing nut 16 Outer diameter

Claims (6)

内輪と、外輪と、前記内外輪の軌道間を転動可能にされた転動体を有するころがり軸受において、前記内輪の軸挿入穴を形成する内周部と、前記外輪の穴挿入軸を形成する外周部と、前記内周部の両側面内周に沿って設けられたねじ長さを除き同諸元の一組のねじ、又は前記外周部の両側外周に沿って設けられたねじ長さを除き同諸元の一組のねじの少なくとも何れか一組と、を有することを特徴とするころがり軸受。   In a rolling bearing having an inner ring, an outer ring, and a rolling element capable of rolling between the races of the inner and outer rings, an inner peripheral portion that forms a shaft insertion hole of the inner ring, and a hole insertion shaft of the outer ring are formed. A set of screws with the same specifications except for the outer peripheral portion and the screw length provided along the inner periphery on both sides of the inner peripheral portion, or the screw length provided along the outer periphery on both sides of the outer peripheral portion. A rolling bearing characterized by having at least one set of a set of screws except the same specifications. 前記ころがり軸受はアンギュラ玉軸受であることを特徴とする請求項１記載のころがり軸受。   2. The rolling bearing according to claim 1, wherein the rolling bearing is an angular ball bearing. 請求項１又は２に記載の転動体を複数列有し、前記外輪又は内輪が複数設けられた軸受ユニットであって、前記複数設けられた外輪又は内輪の互いに当接する側の前記ねじに相互に螺着され前記内輪を結合固定する固定用中空おねじ、又は、前記外輪を結合固定する固定用ナットと、を有し、前記固定用中空おねじの内径が前記内周部より大きく、前記固定用ナットの外径が前記外周部より小さくされていることを特徴とする軸受ユニット。   A bearing unit having a plurality of rows of rolling elements according to claim 1 and a plurality of the outer rings or inner rings provided to the screws on the abutting side of the plurality of outer rings or inner rings. A fixing hollow male screw that is screwed and fixed to couple the inner ring, or a fixing nut that couples and fixes the outer ring, and an inner diameter of the fixing hollow male screw is larger than the inner peripheral portion, and the fixing A bearing unit, wherein the outer diameter of the nut is smaller than that of the outer peripheral portion. 前記当接面間にシムが設けられていることを特徴とする請求項３記載の軸受ユニット。   The bearing unit according to claim 3, wherein a shim is provided between the contact surfaces. 前記ころがり軸受のうち、隣り合う二列の外輪が一体にされ、前記内輪が二分割され、前記内輪の互いに当接する側の前記ねじに相互に螺着され前記内輪を結合固定する固定用中空おねじと、前記固定用中空おねじの内径が前記内周部より大きくされていることを特徴とする請求項１又は２記載のころがり軸受。   Among the rolling bearings, adjacent two rows of outer rings are integrated, the inner ring is divided into two parts, and the inner ring is screwed together to the screws on the side where the inner rings come into contact with each other. The rolling bearing according to claim 1 or 2, wherein an inner diameter of the screw and the fixing hollow male screw is made larger than that of the inner peripheral portion. 前記軸受ユニットのうち、隣り合う二列の外輪が一体にされ、前記内輪が二分割され、前記内輪の互いに当接する側の前記ねじに相互に螺着され前記内輪を結合固定する固定用中空おねじと、前記固定用中空おねじの内径が前記内周部より大きくされていることを特徴とする請求項３又は４記載の軸受ユニット。   Among the bearing units, adjacent two rows of outer rings are integrated, the inner ring is divided into two parts, and the inner ring is screwed together to the screws on the side where the inner rings come into contact with each other. The bearing unit according to claim 3 or 4, wherein an inner diameter of the screw and the fixing hollow male screw is larger than that of the inner peripheral portion.
JP2013005692A 2013-01-16 2013-01-16 Rolling bearing, and bearing unit Pending JP2014137097A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105782237A (en) * 2016-05-17 2016-07-20 中山市盈科轴承制造有限公司 Bi-inner-ring and double-row angular contact thrust ball bearing and preloading interval optimization method thereof
CN105805153A (en) * 2016-05-17 2016-07-27 中山市盈科轴承制造有限公司 Angular contact thrust ball bearing unit with flange outer ring and capable of preventing inner rings from separating off
CN105805175A (en) * 2016-05-17 2016-07-27 中山市盈科轴承制造有限公司 Angular contact ball bearing assembly

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105782237A (en) * 2016-05-17 2016-07-20 中山市盈科轴承制造有限公司 Bi-inner-ring and double-row angular contact thrust ball bearing and preloading interval optimization method thereof
CN105805153A (en) * 2016-05-17 2016-07-27 中山市盈科轴承制造有限公司 Angular contact thrust ball bearing unit with flange outer ring and capable of preventing inner rings from separating off
CN105805175A (en) * 2016-05-17 2016-07-27 中山市盈科轴承制造有限公司 Angular contact ball bearing assembly

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