JP2006183846A - Bearing device - Google Patents

Bearing device Download PDF

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JP2006183846A
JP2006183846A JP2004381073A JP2004381073A JP2006183846A JP 2006183846 A JP2006183846 A JP 2006183846A JP 2004381073 A JP2004381073 A JP 2004381073A JP 2004381073 A JP2004381073 A JP 2004381073A JP 2006183846 A JP2006183846 A JP 2006183846A
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bearing
bearing housing
rows
rings
fitted
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JP4356611B2 (en
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Tadahiro Hoshino
忠宏 星野
Eishin Umagami
英信 馬上
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NSK Ltd
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NSK Ltd
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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
    • F16C19/22—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

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bearing device for supporting a body of a printing machine, capable of stably setting an appropriate pre-load and of improving bearing accuracy and assembling performance. <P>SOLUTION: The bearing device 20 for supporting the body of the printing machine is provided with a bearing housing 21 in which a flange part 21a corresponding to an outer ring spacer 6 is formed integrally by one member in the inner peripheral part; two outer rings 1 having raceway surfaces 1a on the inner diameter faces and fitted into the bearing housing 21 by shrinkage fitting etc. so as to sandwich the flange part 21a; two inner rings 2 having raceway surfaces 2a on the outer diameter faces; and a plurality of rolling elements 3 arranged so as to be rolled between the respective raceway surfaces 2a of the two inner rings 2 and the respective raceway surfaces 1a of the two outer rings 1 fitted into the bearing housing 21. The respective raceway surfaces 1a of the two outer rings 1 are processed after the two outer rings 1 are fitted into the bearing housing 21. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、印刷機械の胴サポート用として好適な軸受装置に関する。   The present invention relates to a bearing device suitable for a cylinder support of a printing machine.

印刷機械の胴サポート用としての軸受装置は、印刷精度を上げることを目的に胴の自由度を完全に拘束する必要があることから、軸受及び軸受ハウジングには剛性が要求され、そのため、軸受には予圧が付与される。
従来のこの種の印刷機械の胴サポート用軸受装置としては、例えば図５に示すように、外輪１と内輪２との間に転動体としての複数の円すいころ３が保持器４を介して転動可能に配設された単列円すいころ軸受５を外輪間座６及び内輪間座７を介して２列背面組合せとし、２列の外輪１を軸受ハウジング８に内嵌すると共に、２列の内輪２を胴９の軸部１０に外嵌したものが提案されている。 Since a bearing device for a cylinder support of a printing machine needs to completely restrain the degree of freedom of the cylinder for the purpose of increasing printing accuracy, the bearing and the bearing housing are required to be rigid. Is preloaded.
For example, as shown in FIG. 5, a plurality of tapered rollers 3 as rolling elements are rolled via a cage 4 between an outer ring 1 and an inner ring 2. The single row tapered roller bearings 5 that are movably disposed are combined in the back of the two rows via the outer ring spacer 6 and the inner ring spacer 7, and the two rows of outer rings 1 are fitted in the bearing housing 8, and the two rows There has been proposed one in which the inner ring 2 is externally fitted to the shaft portion 10 of the trunk 9.

軸受部への予圧は軸部１０の先端側に螺合されたナット１１を締め込んで軸部１０の先端側の列の内輪２を軸方向に押圧することで負荷され、また、軸受ハウジング８の胴９側を向く端面にはシール部材を兼ねた外輪押え１２がシム１３を介して装着されている。なお、図５において符号１４は軸受ハウジング８及び外輪間座６を貫通して軸受空間に連通する油孔である。   The preload on the bearing portion is loaded by tightening a nut 11 screwed to the distal end side of the shaft portion 10 and pressing the inner ring 2 in the row on the distal end side of the shaft portion 10 in the axial direction. An outer ring presser 12 also serving as a seal member is attached to the end surface of the body 9 facing the body 9 via a shim 13. In FIG. 5, reference numeral 14 denotes an oil hole that passes through the bearing housing 8 and the outer ring spacer 6 and communicates with the bearing space.

ところで、軸受単体で予圧を設定した場合、予圧荷重がかかるため、軸受外輪は弾性変形により半径方向に膨張する。一方、上記従来の印刷機械の胴サポート用軸受装置のように、軸受ハウジング８に軸受５を嵌め込んで予圧を設定した場合、外輪１の膨張が軸受ハウジング８により規制され、また、軸受ハウジング８との嵌め合いにより外輪１が収縮した状態となっている。   By the way, when a preload is set for the bearing alone, a preload is applied, so that the bearing outer ring expands in the radial direction due to elastic deformation. On the other hand, when the preload is set by fitting the bearing 5 in the bearing housing 8 as in the case of the above-described conventional cylinder support bearing device for a printing machine, the expansion of the outer ring 1 is restricted by the bearing housing 8, and the bearing housing 8 And the outer ring 1 is in a contracted state.

このように、軸受単体と軸受５を軸受ハウジング８に嵌め込んだ状態では予圧の設定が異なってしまうため、作業性等の制約から、軸受ハウジング８に軸受５を組み込んだ状態で予圧の設定ができないとき等は問題となる。
また、外輪１の外径と軸受ハウジング８の内径との嵌め合い精度のばらつきにより外輪１の収縮量・内部応力が変化して予圧のばらつきが大きくなると、下限側で適切な予圧を確保しても上限側では予圧が過大となり、軸受寿命に悪影響を及ぼしてしまう。 As described above, since the setting of the preload differs when the bearing alone and the bearing 5 are fitted in the bearing housing 8, the setting of the preload is performed with the bearing 5 installed in the bearing housing 8 due to workability restrictions. When it is not possible, it becomes a problem.
Further, when the shrinkage amount / internal stress of the outer ring 1 changes due to variations in the fitting accuracy between the outer diameter of the outer ring 1 and the inner diameter of the bearing housing 8 and the variation in the preload increases, an appropriate preload is secured on the lower limit side. However, the preload is excessive on the upper limit side, which adversely affects the bearing life.

更に、軸受のアキシアル方向の固定に際しても、軸受ハウジング８、外輪押え１２、軸受幅寸法等の各部品の公差が積み重なることから、必要精度を確保するためには各部品の公差を非常に小さくする高精度な加工が必要となるか、もしくは、押え位置調整用シム１３が必要となる。
更に、高精度な回転・取り付けを要求される精密軸受においては、軸受５を軸受ハウジング８に締り嵌めで固定した際、しめ代による軸受５と軸受ハウジング８との弾性変形により、軸受５の内外径・端面の振れ精度、真円度、平行度が軸受単体の場合よりも悪化してしまう場合がある。
本発明はこのような不都合を解消するためになされたものであり、適切な予圧を安定して設定することができると共に、軸受精度の向上及び組立性の向上を図ることができる軸受装置を提供することを目的とする。 Further, since the tolerances of the parts such as the bearing housing 8, the outer ring retainer 12, and the bearing width dimension are stacked when the bearing is fixed in the axial direction, the tolerances of the parts are made very small in order to ensure the required accuracy. High-precision machining is required, or a presser position adjusting shim 13 is required.
Further, in a precision bearing that requires high-precision rotation and mounting, when the bearing 5 is fixed to the bearing housing 8 by an interference fit, elastic deformation of the bearing 5 and the bearing housing 8 due to interference allowance causes the inner and outer sides of the bearing 5 to be fixed. The runout accuracy, roundness, and parallelism of the diameter and end face may be worse than those of a single bearing.
The present invention has been made to eliminate such inconveniences, and provides a bearing device capable of stably setting an appropriate preload, and improving bearing accuracy and assembling ability. The purpose is to do.

上記目的を達成するために、請求項１に係る発明は、印刷機械の胴サポート用軸受装置において、内周部に外輪間座に相当するフランジ部を一つの部材で一体に形成した軸受ハウジングと、内径面に軌道面を有して前記軸受ハウジングに前記フランジ部を軸方向両側から挟むように嵌め込まれた２列の外輪と、外径面に軌道面を有する２列の内輪と、該２列の内輪の各軌道面と前記軸受ハウジングに嵌め込まれた前記２列の外輪の各軌道面との間に転動自在に配設された複数の転動体とを備え、
前記２列の外輪の各軌道面が該２列の外輪を前記軸受ハウジングに嵌め込んだ後に加工されていることを特徴とする。
請求項２に係る発明は、請求項１において、背面組合せによる定位置予圧で用いられることを特徴とする。
請求項３に係る発明は、請求項１又は２において、前記軸受ハウジングに軸受空間に連通する油孔を設けたことを特徴とする。 In order to achieve the above object, a first aspect of the invention relates to a bearing device for a cylinder support of a printing machine, and a bearing housing in which a flange portion corresponding to an outer ring spacer is integrally formed by a single member on an inner peripheral portion. Two rows of outer rings that have raceway surfaces on the inner diameter surface and are fitted in the bearing housing so as to sandwich the flange portion from both sides in the axial direction; two rows of inner rings that have raceway surfaces on the outer diameter surface; A plurality of rolling elements arranged in a freely rollable manner between each raceway surface of the inner ring of the row and each raceway surface of the two rows of outer rings fitted in the bearing housing;
The raceway surfaces of the two rows of outer rings are processed after the two rows of outer rings are fitted into the bearing housing.
The invention according to claim 2 is characterized in that, in claim 1, it is used in a fixed position preload by a back surface combination.
According to a third aspect of the present invention, in the first or second aspect, an oil hole communicating with the bearing space is provided in the bearing housing.

本発明によれば、内周部に外輪間座に相当するフランジ部を一つの部材で一体に形成した軸受ハウジングに２列の外輪を前記フランジ部を軸方向両側から挟むように嵌め込み、且つ２列の外輪の各軌道面を該２列の外輪を軸受ハウジングに嵌め込んだ後に加工しているので、予圧のばらつきが大きくなる要因である外輪外径とハウジング内径との嵌め合い精度のばらつき及び軸受に予圧をかけた際の外輪膨張を考慮する必要がなく、予圧のばらつきを小さくすることができる。   According to the present invention, two rows of outer rings are fitted into a bearing housing in which a flange portion corresponding to an outer ring spacer is formed integrally with an inner peripheral portion so as to sandwich the flange portions from both sides in the axial direction, and 2 Since each raceway surface of the outer ring of the row is processed after the outer rows of the two rows are fitted into the bearing housing, variation in the fitting accuracy between the outer diameter of the outer ring and the inner diameter of the housing, which is a factor in increasing variation in preload, and It is not necessary to consider the outer ring expansion when preload is applied to the bearing, and variations in preload can be reduced.

これにより、適切な予圧を安定して設定することができると共に、軸受精度のばらつきも大幅に抑えることができ、軸受精度の向上を図ることができる。
また、内周部に外輪間座に相当するフランジ部を一つの部材で一体に形成した軸受ハウジングに２列の外輪を前記フランジ部を軸方向両側から挟むように嵌め込んでいるため、アキシアル荷重を軸受ハウジングのフランジ部で受けることができ、これにより、外輪押え及び外輪間座が不要となるので部品点数が削減されて組立工数を少なくすることができ、この結果、組立性の向上を図ることができる。 As a result, an appropriate preload can be set stably, and variations in bearing accuracy can be greatly suppressed, thereby improving bearing accuracy.
In addition, since two rows of outer rings are fitted into the bearing housing in which the flange portion corresponding to the outer ring spacer is formed integrally with the inner peripheral portion with one member so as to sandwich the flange portion from both sides in the axial direction, Can be received by the flange portion of the bearing housing, which eliminates the need for the outer ring retainer and outer ring spacer, thereby reducing the number of parts and reducing the number of assembling steps. As a result, the assembly is improved. be able to.

以下、本発明の実施の形態の一例を図を参照して説明する。図１は本発明の実施の形態の一例である印刷機械の胴サポート用軸受装置を説明するための要部断面図、図２は図１の軸受装置を印刷機械の胴の軸部に組み込んだ状態を示す要部断面図、図３は本発明の他の実施の形態である印刷機械の胴サポート用軸受装置を説明するための要部断面図、図４は図３の軸受装置を印刷機械の胴の軸部に組み込んだ状態を示す要部断面図である。なお、既に図５で説明した従来の軸受装置と重複する部分については、各図に同一符号を付して説明する。   Hereinafter, an example of an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a cross-sectional view of an essential part for explaining a cylinder support bearing device for a printing machine, which is an example of an embodiment of the present invention. FIG. 2 is a drawing of the bearing device of FIG. FIG. 3 is a cross-sectional view of an essential part illustrating a state, FIG. 3 is a cross-sectional view of an essential part for explaining a cylinder support bearing device of a printing machine according to another embodiment of the present invention, and FIG. It is principal part sectional drawing which shows the state assembled in the axial part of the trunk | drum. In addition, about the part which overlaps with the conventional bearing apparatus already demonstrated in FIG. 5, the same code | symbol is attached | subjected and demonstrated to each figure.

図１に示すように、本発明の実施の形態の一例である印刷機械の胴サポート用軸受装置２０は、内周部に外輪間座６（５参照）に相当するフランジ部２１ａを一つの部材で一体に形成した軸受ハウジング２１と、内径面に軌道面１ａを有して軸受ハウジング２１にフランジ部２１ａを軸方向両側から挟むように焼きばめ等により嵌め込まれた２列の外輪１とを備えており、２列の外輪１の各軌道面１ａは該２列の外輪１を軸受ハウジング２１に嵌め込んで一体化した後に加工されている。   As shown in FIG. 1, a cylinder support bearing device 20 for a printing machine, which is an example of an embodiment of the present invention, has a flange portion 21a corresponding to an outer ring spacer 6 (see 5) on one inner peripheral portion as one member. And two rows of outer rings 1 having a raceway surface 1a on the inner diameter surface and fitted into the bearing housing 21 by shrink fitting so as to sandwich the flange portion 21a from both sides in the axial direction. The raceway surfaces 1a of the two rows of outer rings 1 are processed after the two rows of outer rings 1 are fitted and integrated into the bearing housing 21.

そして、軸受ハウジング２１に嵌め込まれて一体化された２列の外輪１の各軌道面１ａと内輪間座７が介装された２列の内輪２の各軌道面２ａとの間に転動体としての複数の円すいころ３が保持器４を介して周方向に転動可能に配設されて、背面組合せ構造とされている。
また、軸受ハウジング２１にはハウジング８及び外輪間座６に相当する部分を貫通して軸受空間に連通する油溝２２が形成されている。なお、軸受ハウジング２１の外周形状は、嵌め込まれる部材２３の内周形状に対応した種々の形状とすることができ、必ずしも円筒面に限定する必要はない。 As rolling elements between the raceway surfaces 1a of the two rows of outer rings 1 fitted and integrated in the bearing housing 21 and the raceway surfaces 2a of the two rows of inner rings 2 in which the inner ring spacers 7 are interposed. A plurality of tapered rollers 3 are arranged so as to be able to roll in the circumferential direction via a cage 4 to form a rear combination structure.
The bearing housing 21 is formed with an oil groove 22 that passes through portions corresponding to the housing 8 and the outer ring spacer 6 and communicates with the bearing space. The outer peripheral shape of the bearing housing 21 can be various shapes corresponding to the inner peripheral shape of the member 23 to be fitted, and is not necessarily limited to the cylindrical surface.

図２は上記構成の軸受装置２０の２列の内輪２を印刷機械の胴９の軸部１０に組み込んだ状態を示すものであり、軸受部への予圧は軸部１０の先端側に螺合されたナット１１を締め込んで軸部１０の先端側の列の内輪２を軸方向に押圧することで負荷される定位置予圧とされている。また、軸受ハウジング２１の胴９側を向く端面には、シール部材２４が装着されている。   FIG. 2 shows a state in which two rows of the inner rings 2 of the bearing device 20 having the above-described configuration are incorporated into the shaft portion 10 of the cylinder 9 of the printing machine. The fixed position preload is applied by tightening the nut 11 and pressing the inner ring 2 in the row on the distal end side of the shaft portion 10 in the axial direction. A seal member 24 is mounted on the end surface of the bearing housing 21 facing the body 9 side.

上記の説明から明らかなように、この実施の形態では、内周部に外輪間座６に相当するフランジ部２１ａを一つの部材で一体に形成した軸受ハウジング２１に２列の外輪１をフランジ部２１ａを軸方向両側から挟むように焼きばめ等により嵌め込み、且つ２列の外輪１の各軌道面１ａを該２列の外輪１を軸受ハウジング２１に嵌め込んだ後に加工しているので、予圧のばらつきが大きくなる要因である外輪１の外径とハウジング８の内径との嵌め合い精度のばらつき及び軸受に予圧をかけた際の外輪膨張を考慮する必要がなく、予圧のばらつきを小さくすることができる。   As is apparent from the above description, in this embodiment, two rows of outer rings 1 are provided in the flange portion 21a corresponding to the outer ring spacer 6 on the inner peripheral portion. 21a is fitted by shrink fitting so as to be sandwiched from both sides in the axial direction, and the raceway surfaces 1a of the two rows of outer rings 1 are processed after the two rows of outer rings 1 are fitted into the bearing housing 21. It is not necessary to consider the variation in the fitting accuracy between the outer diameter of the outer ring 1 and the inner diameter of the housing 8 and the expansion of the outer ring when the bearing is preloaded, which is a factor that increases the variation of the outer ring 1. Can do.

これにより、適切な予圧を安定して設定することができると共に、軸受精度のばらつきを大幅に抑えて軸受精度の向上を図ることができ、主にＩＳＯ ＣＬＡＳＳ５以上、ＡＢＭＡ ＣＬＡＳＳ３以上の軸受精度の精密軸受に適用することができる。
また、内周部に外輪間座６に相当するフランジ部２１ａを一つの部材で一体に形成した軸受ハウジング２１に２列の外輪１をフランジ部２１ａを軸方向両側から挟むように嵌め込んでいるため、アキシアル荷重を軸受ハウジング２１のフランジ部２１ａで受けることができ、これにより、外輪押え及び外輪間座が不要となるので部品点数が削減されて組立工数を少なくすることができ、この結果、組立性の向上を図ることができる。 As a result, an appropriate preload can be set stably, and variations in bearing accuracy can be greatly suppressed to improve bearing accuracy. The precision of the bearing accuracy is mainly ISO CLASS 5 or higher and ABMA CLASS 3 or higher. It can be applied to bearings.
Further, two rows of outer rings 1 are fitted into a bearing housing 21 in which a flange portion 21a corresponding to the outer ring spacer 6 is integrally formed on the inner peripheral portion so as to sandwich the flange portions 21a from both sides in the axial direction. Therefore, the axial load can be received by the flange portion 21a of the bearing housing 21, thereby eliminating the need for the outer ring retainer and the outer ring spacer, thereby reducing the number of parts and reducing the number of assembly steps. Assemblability can be improved.

更に、外輪押えが不要となることから、シール部材２４に外輪押え機能を設ける必要がなくなり、従って、図５に示す外輪１の押え位置調整用のシム１３が不要となり、組立作業の短縮化を図ることができる。
なお、本発明は上記実施の形態に限定されるものではなく、本発明の要旨を逸脱しない範囲において適宜変更可能である。 Further, since the outer ring presser is not required, it is not necessary to provide the outer ring presser function on the seal member 24. Therefore, the shim 13 for adjusting the presser position of the outer ring 1 shown in FIG. 5 is not required, and the assembly work can be shortened. Can be planned.
In addition, this invention is not limited to the said embodiment, In the range which does not deviate from the summary of this invention, it can change suitably.

例えば、上記実施の形態では、２列の内輪２の間に内輪間座７を介装した場合を例示したが、必ずしもこのようにする必要はなく、図３及び図４に示すように、２列の内輪２を互いに突き合わせてもよく、また、２列の内輪２間にすき間を設けてもよい。
その他、上記実施の形態において例示したフランジ部、軸受ハウジング、軌道面、外輪、内輪、転動体、シール部材等の材質，形状，寸法，形態，数，配置個所等は本発明を達成できるものであれば任意であり、限定されない。 For example, in the above-described embodiment, the case where the inner ring spacer 7 is interposed between the two rows of the inner rings 2 is illustrated, but it is not always necessary to do this, and as shown in FIGS. The rows of inner rings 2 may be butted against each other, and a gap may be provided between the two rows of inner rings 2.
In addition, the material, shape, dimensions, form, number, location, etc. of the flange portion, bearing housing, raceway surface, outer ring, inner ring, rolling element, seal member, etc. exemplified in the above embodiment can achieve the present invention. It is optional and not limited.

本発明の実施の形態の一例である印刷機械の胴サポート用軸受装置を説明するための要部断面図である。It is principal part sectional drawing for demonstrating the cylinder support bearing apparatus of the printing machine which is an example of embodiment of this invention. 図１の軸受装置を印刷機械の胴の軸部に組み込んだ状態を示す要部断面図である。It is principal part sectional drawing which shows the state which integrated the bearing apparatus of FIG. 1 into the axial part of the cylinder of a printing machine. 本発明の他の実施の形態である印刷機械の胴サポート用軸受装置を説明するための要部断面図である。It is principal part sectional drawing for demonstrating the cylinder support bearing apparatus of the printing machine which is other embodiment of this invention. 図３の軸受装置を印刷機械の胴の軸部に組み込んだ状態を示す要部断面図である。It is principal part sectional drawing which shows the state which integrated the bearing apparatus of FIG. 3 in the axial part of the cylinder of a printing machine. 従来の印刷機械の胴サポート用軸受装置を印刷機械の胴の軸部に組み込んだ状態を示す要部断面図である。It is principal part sectional drawing which shows the state which incorporated the conventional bearing device for cylinder support of a printing machine in the axial part of the cylinder of a printing machine.

符号の説明Explanation of symbols

１ 外輪
１ａ 軌道面
２ 内輪
２ａ 軌道面
３ 円すいころ（転動体）
２１ 軸受ハウジング
２１ａ フランジ部
２０ 印刷機械の胴サポート用軸受装置
２２ 油孔
1 outer ring 1a raceway surface 2 inner ring 2a raceway surface 3 tapered roller (rolling element)
21 Bearing housing 21a Flange 20 Bearing device 22 for cylinder support of printing machine Oil hole

Claims (3)

内周部に外輪間座に相当するフランジ部を一つの部材で一体に形成した軸受ハウジングと、内径面に軌道面を有して前記軸受ハウジングに前記フランジ部を軸方向両側から挟むように嵌め込まれた２列の外輪と、外径面に軌道面を有する２列の内輪と、該２列の内輪の各軌道面と前記軸受ハウジングに嵌め込まれた前記２列の外輪の各軌道面との間に転動自在に配設された複数の転動体とを備え、
前記２列の外輪の各軌道面が該２列の外輪を前記軸受ハウジングに嵌め込んだ後に加工されていることを特徴とする軸受装置。 A bearing housing in which a flange portion corresponding to an outer ring spacer is integrally formed on the inner peripheral portion with a single member, and a raceway surface on an inner diameter surface, and the flange portion is fitted into the bearing housing so as to sandwich the flange portion from both axial sides. Two rows of outer rings, two rows of inner rings having raceway surfaces on the outer diameter surface, each raceway surface of the two rows of inner rings, and each raceway surface of the two rows of outer rings fitted in the bearing housing. And a plurality of rolling elements arranged between the rolling elements,
Each bearing surface of the two rows of outer rings is processed after the two rows of outer rings are fitted into the bearing housing. 背面組合せによる定位置予圧で用いられることを特徴とする請求項１に記載した軸受装置。   The bearing device according to claim 1, wherein the bearing device is used in a fixed position preload by a back surface combination. 前記軸受ハウジングに軸受空間に連通する油孔を設けたことを特徴とする請求項１又は２に記載した軸受装置。   The bearing device according to claim 1, wherein an oil hole communicating with the bearing space is provided in the bearing housing.
JP2004381073A 2004-12-28 2004-12-28 Bearing device Expired - Fee Related JP4356611B2 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11162529B2 (en) 2020-01-10 2021-11-02 Sandcraft, Llc Double row tapered bearing with press fit preloading elements

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11162529B2 (en) 2020-01-10 2021-11-02 Sandcraft, Llc Double row tapered bearing with press fit preloading elements

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