JP2595559Y2 - Double-row outward-facing angular contact ball bearing and bearing device - Google Patents
Double-row outward-facing angular contact ball bearing and bearing deviceInfo
- Publication number
- JP2595559Y2 JP2595559Y2 JP1993047476U JP4747693U JP2595559Y2 JP 2595559 Y2 JP2595559 Y2 JP 2595559Y2 JP 1993047476 U JP1993047476 U JP 1993047476U JP 4747693 U JP4747693 U JP 4747693U JP 2595559 Y2 JP2595559 Y2 JP 2595559Y2
- Authority
- JP
- Japan
- Prior art keywords
- row
- ball
- balls
- double
- load
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- 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
- F16C19/50—Other types of ball or roller bearings
- F16C19/505—Other types of ball or roller bearings with the diameter of the rolling elements of one row differing from the diameter of those of another row
-
- 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
- F16C2240/00—Specified values or numerical ranges of parameters; Relations between them
- F16C2240/40—Linear dimensions, e.g. length, radius, thickness, gap
- F16C2240/70—Diameters; Radii
- F16C2240/80—Pitch circle diameters [PCD]
Description
【考案の詳細な説明】[Detailed description of the invention]
【０００１】[0001]
【産業上の利用分野】本考案は、複列外向きアンギュラ
玉軸受の寿命向上に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to improving the life of a double-row outward-facing angular contact ball bearing.
【０００２】[0002]
【従来の技術】従来の複列外向きアンギュラ玉軸受５０
は、図２に示すように、軸６に周設された状態で、軸６
とハウジング５との間に介在しており、内輪１０と外輪
２０との間に、第１の玉列（ピッチ円Ｍ3 ）を構成する
第１の玉３０と、第２の玉列を（ピッチ円Ｍ4 ）構成す
る第２の玉４０とが複数周設された構造を有している。
第１の玉列の作用点Ａ1 及び第２の玉列の作用点Ａ
2 は、それぞれ、軸６の軸心線Ｃ上にある。2. Description of the Related Art Conventional double-row outward-facing angular contact ball bearing 50
As shown in FIG. 2, the
Between the inner ring 10 and the outer ring 20, the first ball 30 and the second ball row that constitute the first ball row (pitch circle M 3 ). A pitch circle M 4 ) has a structure in which a plurality of second balls 40 are provided in a plurality.
Action point A 1 of the first ball train and action point A of the second ball train
2 are respectively on the axis C of the shaft 6.
【０００３】ここで、本考案でいう作用点とは、玉列に
作用する作用線と軸受の軸心線との交点を示している。
なお、図２は、複列外向きアンギュラ玉軸受５０の第１
の玉３０及び第２の玉４０が一つずつ見える断面を示し
ている。また、作用点Ａ1 と作用点Ａ2 との間の距離
（作用点間距離）をａ2 で示し、組立幅の中心線の延長
からモーメント荷重Ｆがかかる位置（荷重点Ｐ）までの
距離（以下、『オフセット量』という）をｂで示す。Here, the action point in the present invention indicates an intersection point between the action line acting on the ball train and the axis of the bearing.
FIG. 2 shows the first row of the double row outward angular contact ball bearing 50.
2 shows a cross section in which one ball 30 and one second ball 40 can be seen. The distance of the distance between the working point A 1 point of action A 2 (the distance between the working point) shown by a 2, to a position where such moment load F from the extension of the center line of the assembled width (load point P) (Hereinafter referred to as “offset amount”) is indicated by b.
【０００４】この複列外向きアンギュラ玉軸受５０は、
第１の玉３０の直径Ｄ3 と第２の玉４０の直径Ｄ4 とが
等しく（Ｄ3 ＝Ｄ4 ）、且つ第１の玉列のピッチ円Ｍ3
のピッチ円径ＰＤ3 と第２の玉列のピッチ円Ｍ4 のピッ
チ円径ＰＤ4 とが等しい（ＰＤ3 ＝ＰＤ4 ）構造となっ
ている。ここで、複列外向きアンギュラ玉軸受５０を使
用した場合、第１の玉３０の作用点Ａ1 には荷重Ｒ
1 が、第２の玉４０の作用点Ａ2 には荷重Ｒ2 が、それ
ぞれ作用する。そして、複列外向きアンギュラ玉軸受５
０に、いずれか一方の玉列に偏ったモーメント荷重Ｆが
作用しない場合には、両玉列に作用する荷重の均衡はと
れている。[0004] This double-row outward-facing angular ball bearing 50 is
The diameter D 3 of the first ball 30 is equal to the diameter D 4 of the second ball 40 (D 3 = D 4 ), and the pitch circle M 3 of the first ball row.
Has a pitch circle diameter PD 3 of the pitch circle diameter PD 4 of the pitch circle M 4 of the second ball row are equal (PD 3 = PD 4) structure. Here, when the double-row outward-facing angular ball bearing 50 is used, the load R is applied to the action point A 1 of the first ball 30.
1 applies a load R 2 to the application point A 2 of the second ball 40. And double-row outward-facing angular contact ball bearing 5
When the moment load F biased to one of the ball rows does not act on zero, the loads acting on both ball rows are balanced.
【０００５】[0005]
【考案が解決しようとする課題】しかしながら、前記従
来の複列外向きアンギュラ玉軸受を、例えば、電磁クラ
ッチ用等のように、モーメント荷重Ｆが作用する部分に
使用した場合、第１の玉列にかかる荷重Ｒ1 と第２の玉
列とにかかる荷重Ｒ2 との均衡がくずれ、前記モーメン
ト荷重Ｆの荷重点Ｐに近い側の玉列に大きな荷重がかか
るようになる。従って、前記モーメント荷重Ｆの荷重点
Ｐに近い側の玉列や、これと係合する軌道輪は、前記モ
ーメント荷重Ｆの荷重点Ｐに遠い側の玉列に比べ、早期
に剥離が発生する等、寿命が極めて短くなるという問題
があった。However, when the conventional double row outward angular contact ball bearing is used in a portion where a moment load F acts, for example, for an electromagnetic clutch or the like, the first row of ball bearings is required. It collapses balance load R 1 and load R 2 according to the second ball row according to, so a large load acts on the side of the ball row close to the load point P of the moment load F. Therefore, the row of balls on the side closer to the load point P of the moment load F, and the raceway engaged with the ball row, peel off earlier than the row of balls on the side farther from the load point P of the moment load F. For example, there is a problem that the life is extremely shortened.
【０００６】本考案は、このような従来の問題点を解決
することを課題とするものであり、モーメント荷重Ｆが
作用しても、モーメント荷重Ｆの荷重点Ｐに近い側の玉
列にかかる荷重を低下させることができ、寿命が向上し
た複列外向きアンギュラ玉軸受及びそのような軸受を組
み込んだ軸受装置を提供することを目的とする。An object of the present invention is to solve such a conventional problem. Even if a moment load F acts, the present invention is applied to a row of balls near the load point P of the moment load F. it is possible to reduce the load, double row outward angular contact ball bearing life is improved and set such bearings
It is an object of the present invention to provide a bearing device in which a bearing is incorporated .
【０００７】[0007]
【課題を解決するための手段】この目的を達成するため
に、請求項１に係る考案は、一体物の内輪と一体物の外
輪との間に、第１の玉列及び第２の玉列を備え、該玉列
に作用する荷重の作用線の互いの交点が、該玉列のピッ
チ円の外側にある複列外向きアンギュラ玉軸受におい
て、前記第１の玉列を構成する玉の直径が前記第２の玉
列を構成する玉の直径より小さく且つ前記第１の玉列の
ピッチ円径が前記第２の玉列のピッチ円径より大きいこ
とを特徴とする複列外向きアンギュラ玉軸受を提供する
ものである。また、上記目的を達成するために、請求項
２に係る考案は、請求項１記載の複列外向きアンギュラ
玉軸受で回転軸を支持する軸受装置であって、前記複列
外向きアンギュラ玉軸受を、前記回転軸に加わるモーメ
ント荷重の荷重点に近い側の玉列が前記第２の玉列とな
るように組み込んだことを特徴とする軸受装置を提供す
るものである。 Means for Solving the Problems To this end, devised according to claim 1, between the outer <br/> ring of the inner ring integral of the integral body, the first ball row and In a double row outward angular ball bearing having a second row of balls, and an intersection of lines of action of loads acting on the row of balls located outside a pitch circle of the row of balls, the first row of balls is The diameter of the balls constituting the second ball train is smaller than the diameter of the balls constituting the second ball train, and the pitch circle diameter of the first ball train is larger than the pitch circle diameter of the second ball train. An out-of-row angular contact ball bearing is provided. In order to achieve the above object,
The invention according to claim 2 is a double-row outward-facing angular contact according to claim 1.
A bearing device for supporting a rotating shaft with a ball bearing, wherein the double row
An outward-facing angular contact ball bearing is
The ball row on the side closer to the load point of the weight load is the second ball row.
To provide a bearing device characterized by being incorporated as
Things.
【０００８】[0008]
【作用】本考案によれば、第１の玉列を構成する玉の直
径を、第２の玉列を構成する玉の直径よりも小さくし、
前記第１の玉列のピッチ円径を、前記第２の玉列のピッ
チ円径より大きくしたことで、モーメント荷重Ｆの荷重
点Ｐに近い玉列にかかる荷重が低下する。According to the present invention, the diameter of the balls constituting the first ball train is made smaller than the diameter of the balls constituting the second ball train,
By setting the pitch circle diameter of the first ball row larger than the pitch circle diameter of the second ball row, the load applied to the ball row near the load point P of the moment load F is reduced.
【０００９】以下に、この理由を述べる。モーメント荷
重Ｆの荷重点Ｐに近い側の玉列（ここでは、説明の便宜
上、第２の玉列と仮定する。但し、請求項２に係る発明
では、第２の玉列である。）の作用点Ａ2 にかかる荷重
Ｒ2 と、前記作用点Ａ2 と第１の玉列の作用点Ａ1 との
間の距離ａとの積は、モーメント荷重Ｆと、モーメント
荷重Ｆの荷重点Ｐと作用点Ａ 1 との間の距離（オフセッ
ト量ｂ＋ａ／２）との積に等しいことが知られている。
即ち、 Ｒ2 ・ａ＝Ｆ（ａ／２＋ｂ） ………式１ モーメント荷重Ｆの荷重点Ｐに近い側の玉列の早期剥離
を抑制するためには、作用点Ａ2 にかかる荷重Ｒ2 を小
さくすることが要求される。The reason will be described below. A row of balls on the side closer to the load point P of the moment load F (here, it is assumed to be a second row of balls for convenience of description . However, the invention according to claim 2)
Then, it is a second ball row. The load R 2 according to the working point A 2) of the product of the distance a between the point of action A 2 and the point A 1 of the first ball row is a moment load F, the load moment load F it is known equal to the product of the distance (offset amount b + a / 2) between the point P and the point a 1.
That is, in order to suppress the premature separation of the R 2 · a = F (a / 2 + b) side ball row close to the load point P of ......... formula 1 moment load F is the load R 2 according to the working point A 2 Is required to be small.
【００１０】ここで、式１を展開すると、 Ｒ2 ＝｛（ａ＋２ｂ）／２ａ｝・Ｆ ………式２ となる。式２から、モーメント荷重Ｆを小さくすること
や、モーメント荷重Ｆが作用する位置（荷重点Ｐ）の変
更ができない場合に、作用点Ａ2 にかかる荷重Ｒ2 の値
を小さくするためには、ａを大きくすればよいことが判
る。但し、ｂ＞ａ／２の場合に限る。Here, when Expression 1 is expanded, R 2 = {(a + 2b) / 2a} · F... From Equation 2, in order to reduce the moment load F or to change the position (load point P) where the moment load F acts (load point P), in order to reduce the value of the load R 2 applied to the point of action A 2 , It can be seen that a should be increased. However, only when b> a / 2.
【００１１】本考案では、第１の玉列（即ち、モーメン
ト荷重Ｆの荷重点Ｐに遠い側の玉列）を構成する第１の
玉の直径を、第２の玉列を構成する第２の玉の直径より
小さくし、且つ、第１の玉列のピッチ円径を前記第２の
玉列のピッチ円径より大きくしたため、第１の玉の直径
と第２の玉の直径とが等しい場合に比べ、第１の玉の作
用点Ａ1 が、第２の玉の作用点Ａ2 から遠い（離れた）
位置となる。従って、両玉列に作用する荷重の作用線Ｓ
の互いの交点Ｋが、両玉列のピッチ円Ｍ1 ，Ｍ2 の外側
にある複列外向きアンギュラ玉軸受の組立幅を大きくし
なくても、作用点Ａ1 と作用点Ａ2 との間の距離が、従
来より大きく（長く）なる。In the present invention, the diameter of the first ball constituting the first ball row (that is, the ball row on the side farther from the load point P of the moment load F) is determined by the second ball row constituting the second ball row. The diameter of the first ball is equal to the diameter of the second ball because the pitch diameter of the first ball row is smaller than the diameter of the pitch circle of the second ball row. Compared to the case, the action point A1 of the first ball is farther (distant) from the action point A2 of the second ball.
Position. Therefore, the line of action S of the load acting on both rows of balls
Of mutual intersection K is, without increasing the assembly width of the double row outward angular ball bearings on the outside of the pitch circle M 1, M 2 of the two ball rows, the working point A 1 and the point A 2 The distance between them becomes larger (longer) than before.
【００１２】このため、モーメント荷重Ｆの荷重点Ｐに
近い玉列の作用点Ａ2 にかかる荷重Ｒ2 が従来より小さ
くなる。[0012] Thus, the load R 2 according to the working point A 2 of the ball row close to the load point P moment load F becomes smaller than the conventional.
【００１３】[0013]
【実施例】次に、本考案に係る一実施例について、図面
を参照して説明する。図１は、本考案の実施例に係る複
列外向きアンギュラ玉軸受を、軸受装置としての電磁ク
ラッチの所定位置に組み込んだ状態を示す一部断面構成
図である。図１に示す複列外向きアンギュラ玉軸受１０
０は、軸６に周設された状態で、軸６とハウジング５と
の間に介在しており、内輪１と外輪２との間に、第１の
玉列を構成する第１の玉３と、第２の玉列を構成する複
数の第２の玉４とが、複数周設された構造を有してい
る。Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a partial cross-sectional configuration diagram showing a state in which a double-row outward-facing angular ball bearing according to an embodiment of the present invention is incorporated in a predetermined position of an electromagnetic clutch as a bearing device . Double row outward angular contact ball bearing 10 shown in FIG.
Reference numeral 0 denotes a first ball 3 that is interposed between the shaft 6 and the housing 5 while being provided around the shaft 6 and that forms a first ball train between the inner ring 1 and the outer ring 2. And a plurality of second balls 4 constituting the second ball row have a structure in which a plurality of rounds are provided.
【００１４】この複列外向きアンギュラ玉軸受１００
は、第１の玉３の直径Ｄ1 が、第２の玉４の直径Ｄ2 よ
り小さく（Ｄ1 ＜Ｄ2 ）設計されている。第１の玉３及
び第２の玉４は、外輪２に対する転動面が、軸６の外周
から同一の距離となる位置にある。即ち、第１の玉３の
中心は、第２の玉４の中心より外輪２側に位置してい
る。また、第１の玉３の直径Ｄ1 が、第２の玉４の直径
Ｄ2より小さいため、第１の玉３の中心位置は、従来の
軸受のそれより組立幅の中心線Ｎから外側に位置してい
る。This double row outward-facing angular contact ball bearing 100
Is designed such that the diameter D 1 of the first ball 3 is smaller than the diameter D 2 of the second ball 4 (D 1 <D 2 ). The first ball 3 and the second ball 4 are located at positions where the rolling surfaces for the outer race 2 are at the same distance from the outer periphery of the shaft 6. That is, the center of the first ball 3 is located closer to the outer ring 2 than the center of the second ball 4. Also, since the diameter D1 of the first ball 3 is smaller than the diameter D2 of the second ball 4, the center position of the first ball 3 is located outside the center line N of the assembly width from that of the conventional bearing. It is located in.
【００１５】内輪１は、前記のように配列された第１の
玉列に対応するため、即ち、第１の玉３との係合を行う
ために、第１の玉列と係合する部分の厚みが、第２の玉
列と係合する部分の厚みより厚くなった構造を備えてい
る。従って、第１の玉列のピッチ円Ｍ1 のピッチ円径Ｐ
Ｄ1 は、第２の玉列の、ピッチ円Ｍ2 のピッチ円径ＰＤ
2 より大きく（ＰＤ1 ＞ＰＤ2 ）なった構造を備えてい
る。The inner ring 1 has a portion which engages with the first row of balls in order to correspond to the first row of balls arranged as described above, that is, in order to engage with the first ball 3. Is thicker than the thickness of the portion engaging with the second ball row. Accordingly, the pitch circle diameter P of the pitch circle M 1 of the first ball row is obtained.
D 1 is the pitch circle diameter PD of the pitch circle M 2 of the second row of balls
It has a structure larger than 2 (PD 1 > PD 2 ).
【００１６】第１の玉列の作用点Ａ1 及び第２の玉列の
作用点Ａ2 は、軸６の軸心線Ｃ上にあり、作用点Ａ1 に
は荷重Ｒ1 が、作用点Ａ2 には、荷重Ｒ2 が作用する。
なお、作用点Ａ1 と作用点Ａ2 との間の距離（作用点間
距離）をａ1 で示し、オフセット量をｂで示す。複列外
向きアンギュラ玉軸受１００は、第１の玉３のピッチ円
径ＰＤ1 が第２の玉４のピッチ円径ＰＤ2 より大きく、
さらに、図２に示す複列外向きアンギュラ玉軸受５０に
比べ、第１の玉３の中心が、組立幅の中心線Ｎから外側
の位置に移動しているため、第１の玉列の作用点Ａ1 の
位置が、図２に示す第１の玉３０の作用点Ａ1 の位置よ
り外側（作用点Ａ2 から離れた位置）に移動されてい
る。The action point A 1 of the first ball row and the action point A 2 of the second ball row are on the axis C of the shaft 6, and the load R 1 is applied to the action point A 1. the a 2, a load R 2 acts.
The distance between the working point A 1 point of action A 2 (the distance between the working point) shown in a 1, indicating an offset in terms of b. Double row outwardly angular contact ball bearing 100, the pitch circle diameter PD 1 of the first balls 3 is larger than the pitch circle diameter PD 2 of the second balls 4,
Further, the center of the first ball 3 is moved to a position outside the center line N of the assembly width as compared with the double row outward-facing angular ball bearing 50 shown in FIG. position of the point a 1, are moved outward (away from the point a 2 position) from the position of the point a 1 of the first ball 30 shown in FIG.
【００１７】このため、複列外向きアンギュラ玉軸受１
００は、第１の玉３と第２の玉４の作用点間距離ａ
1 が、図２に示す従来の複列外向きアンギュラ玉軸受５
０の作用点間距離ａ2 より大きい構造となっている。従
って、本実施例に係る複列外向きアンギュラ玉軸受１０
０は、従来の複列外向きアンギュラ玉軸受５０に比べ、
モーメント荷重Ｆの荷重点Ｐに近い側の第２の玉列の作
用点Ａ2 にかかる荷重Ｒ2 が小さくなり、第２の玉列に
かかる負担を低下することができる。For this reason, double-row outward-facing angular contact ball bearing 1
00 is the distance a between the action points of the first ball 3 and the second ball 4
1 is a conventional double-row outward-facing angular contact ball bearing 5 shown in FIG.
The structure is larger than the distance a 2 between the action points of 0. Therefore, the double row outward angular contact ball bearing 10 according to the present embodiment is
0 is smaller than the conventional double-row outward-facing angular contact ball bearing 50.
Load R 2 is reduced according to the working point A 2 of the second ball row closer to the load point P of moment load F, it is possible to reduce the burden on the second ball row.
【００１８】なお、本実施例でいう従来の複列外向きア
ンギュラ玉軸受５０とは、ピッチ円径ＰＤ3 及びピッチ
円径ＰＤ4 が、第２の玉４のピッチ円径ＰＤ2 と等し
く、さらに、複列外向きアンギュラ玉軸受１００と同一
の組立幅、同一の軸受内径及び外径を備えた複列外向き
アンギュラ玉軸受のことである。次に、本実施例に係る
複列外向きアンギュラ玉軸受１００と従来の複列外向き
アンギュラ玉軸受５０について、寿命試験を行ったとこ
ろ、従来の複列外向きアンギュラ玉軸受５０は、モーメ
ント荷重Ｆの荷重点Ｐに近い側の第２の玉列及びこれと
係合する軌道輪部分に早期剥離が生じたが、本実施例に
係る複列外向きアンギュラ玉軸受１００には、剥離の発
生がなかった。Note that the conventional double row outward angular ball bearing 50 referred to in this embodiment is different from the conventional double row angular contact ball bearing 50 in that the pitch circle diameter PD 3 and the pitch circle diameter PD 4 are equal to the pitch circle diameter PD 2 of the second ball 4. Further, it refers to a double-row outward-facing angular ball bearing having the same assembly width as the double-row outward-facing angular ball bearing 100, and the same bearing inner diameter and outer diameter. Next, a life test was performed on the double-row outward angular ball bearing 100 according to the present embodiment and the conventional double-row outward angular ball bearing 50. As a result, the conventional double-row outward angular ball bearing 50 showed a moment load. Premature peeling occurred on the second row of balls near the load point P of F and the raceway portion that engages with the second row of balls. However, in the double row outward-facing angular ball bearing 100 according to the present embodiment, peeling occurred. There was no.
【００１９】これは、本実施例に係る複列外向きアンギ
ュラ玉軸受は、前記ａ1 を大きくしたことで、モーメン
ト荷重Ｆの荷重点Ｐに近い側の第２の玉列の作用点Ａ2
にかかる荷重Ｒ2 が小さくなり、第２の玉列にかかる負
担が低下したためである。この結果、本考案に係る複列
外向きアンギュラ玉軸受は、モーメント荷重Ｆの荷重点
Ｐに近い玉列に早期剥離が発生することが抑制でき、寿
命を大幅に向上することができる。This is because the double-row outward-facing angular ball bearing according to the present embodiment has a larger value of a 1 , so that the action point A 2 of the second ball row closer to the load point P of the moment load F is obtained.
Load R 2 is reduced according to, because the load on the second ball row is lowered. As a result, the double-row outward-facing angular ball bearing according to the present invention can suppress early peeling of the ball row close to the load point P of the moment load F, and can greatly improve the life.
【００２０】また、従来、一方の玉列に早期剥離が発生
することを防止する目的で使用していた、耐剥離性を備
えた高価な軸受材料を用いることなく、前記一方の玉列
に早期剥離が発生することを防止できるため、複列外向
きアンギュラ玉軸受を低コストで製造することができ
る。In addition, without using an expensive bearing material having peeling resistance, which has been conventionally used for preventing one ball row from being prematurely peeled off, the one ball row can be provided with an early Since occurrence of peeling can be prevented, a double-row outward-facing angular contact ball bearing can be manufactured at low cost.
【００２１】[0021]
【考案の効果】以上説明したように、本考案に係る複列
外向きアンギュラ玉軸受及び軸受装置は、第１の玉列を
構成する玉の直径が、第２の玉列を構成する玉の直径よ
りも小さく、前記第１の玉列のピッチ円径が、前記第２
の玉列のピッチ円径より大きい構造を備えているため、
モーメント荷重Ｆの荷重点Ｐに近い側の玉列にかかる荷
重を低下することができる。この結果、モーメント荷重
Ｆの荷重点Ｐに近い側の玉列やこれと係合する軌道輪部
分に、早期剥離が発生することを抑制でき、軸受寿命が
向上することができるという効果がある。As described above, according to the double row outward-facing angular contact ball bearing and bearing device of the present invention , the diameter of the ball forming the first ball row is smaller than that of the ball forming the second ball row. Diameter of the first ball row is smaller than the diameter of the second ball row.
Because it has a structure larger than the pitch circle diameter of the ball train,
The load applied to the ball row on the side near the load point P of the moment load F can be reduced. As a result, it is possible to suppress the occurrence of premature exfoliation in the ball row on the side near the load point P of the moment load F and the raceway ring portion engaged with the row, and there is an effect that the bearing life can be improved.
【図１】本考案の一実施例に係る複列外向きアンギュラ
玉軸受の部分断面図である。FIG. 1 is a partial cross-sectional view of a double-row outward-facing angular ball bearing according to an embodiment of the present invention.
【図２】従来の複列外向きアンギュラ玉軸受の部分断面
図である。FIG. 2 is a partial cross-sectional view of a conventional double-row outward-facing angular ball bearing.
１ 内輪 ２ 外輪 ３ 第１の玉 ４ 第２の玉 Reference Signs List 1 inner ring 2 outer ring 3 first ball 4 second ball
Claims (2)
第１の玉列及び第２の玉列を備え、該玉列に作用する荷
重の作用線の互いの交点が、該玉列のピッチ円の外側に
ある複列外向きアンギュラ玉軸受において、 前記第１の玉列を構成する玉の直径が前記第２の玉列を
構成する玉の直径より小さく且つ前記第１の玉列のピッ
チ円径が前記第２の玉列のピッチ円径より大きいことを
特徴とする複列外向きアンギュラ玉軸受。(1) An inner ring of an integral body and an outer ring of an integral body ,
A double row outward angular ball bearing comprising a first row of balls and a second row of balls, wherein the intersections of lines of action of loads acting on the row of balls are outside a pitch circle of the row of balls; The diameter of the balls forming the first row of balls is smaller than the diameter of the balls forming the second row of balls, and the pitch circle diameter of the first row of balls is larger than the pitch circle diameter of the second row of balls. Double row outward-facing angular contact ball bearing characterized by the above-mentioned.
軸受で回転軸を支持する軸受装置であって、前記複列外A bearing device for supporting a rotating shaft with a bearing, wherein
向きアンギュラ玉軸受を、前記回転軸に加わるモーメンOriented angular contact ball bearings
ト荷重の荷重点に近い側の玉列が前記第２の玉列となるThe ball row on the side closer to the load point of the load is the second ball row.
ように組み込んだことを特徴とする軸受装置。A bearing device characterized by being incorporated as described above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1993047476U JP2595559Y2 (en) | 1993-08-31 | 1993-08-31 | Double-row outward-facing angular contact ball bearing and bearing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1993047476U JP2595559Y2 (en) | 1993-08-31 | 1993-08-31 | Double-row outward-facing angular contact ball bearing and bearing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0718023U JPH0718023U (en) | 1995-03-31 |
| JP2595559Y2 true JP2595559Y2 (en) | 1999-05-31 |
Family
ID=12776197
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1993047476U Expired - Fee Related JP2595559Y2 (en) | 1993-08-31 | 1993-08-31 | Double-row outward-facing angular contact ball bearing and bearing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2595559Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011153716A (en) * | 2011-05-16 | 2011-08-11 | Jtekt Corp | Rolling bearing device |
| US20200158166A1 (en) * | 2017-07-24 | 2020-05-21 | Nachi-Fujikoshi Corp | Automotive differential gear and automotive transmission |
-
1993
- 1993-08-31 JP JP1993047476U patent/JP2595559Y2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0718023U (en) | 1995-03-31 |
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