JPH06307456A - Shell-shaped roller bearing and manufacture thereof - Google Patents

Shell-shaped roller bearing and manufacture thereof

Info

Publication number
JPH06307456A
JPH06307456A JP5097632A JP9763293A JPH06307456A JP H06307456 A JPH06307456 A JP H06307456A JP 5097632 A JP5097632 A JP 5097632A JP 9763293 A JP9763293 A JP 9763293A JP H06307456 A JPH06307456 A JP H06307456A
Authority
JP
Japan
Prior art keywords
outer ring
rollers
roller
holding
roller bearing
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.)
Pending
Application number
JP5097632A
Other languages
Japanese (ja)
Inventor
Taichiro Furukawa
太一郎 古川
Tetsuo Ishiyama
哲夫 石山
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NTN Corp
Original Assignee
NTN Corp
NTN Toyo Bearing Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NTN Corp, NTN Toyo Bearing Co Ltd filed Critical NTN Corp
Priority to JP5097632A priority Critical patent/JPH06307456A/en
Publication of JPH06307456A publication Critical patent/JPH06307456A/en
Pending legal-status Critical Current

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
    • F16C19/22—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
    • F16C19/44—Needle bearings
    • F16C19/46—Needle bearings with one row or needles
    • F16C19/466—Needle bearings with one row or needles comprising needle rollers and an outer ring, i.e. subunit without 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
    • F16C33/588—Races of sheet metal
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C43/00—Assembling bearings
    • F16C43/04—Assembling rolling-contact bearings
    • F16C43/06—Placing rolling bodies in cages or bearings
    • F16C43/08—Placing rolling bodies in cages or bearings by deforming the cages or the races
    • F16C43/086—Placing rolling bodies in cages or bearings by deforming the cages or the races by plastic deformation of the race
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • 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]
    • F16C2240/82—Degree of filling, i.e. sum of diameters of rolling elements in relation to PCD
    • F16C2240/84—Degree of filling, i.e. sum of diameters of rolling elements in relation to PCD with full complement of balls or rollers, i.e. sum of clearances less than diameter of one rolling element

Landscapes

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

Abstract

PURPOSE:To prevent cracking from occurring in the inner surface of a holding protrusion by eliminating carburizing prevention processing from a roller assembling process in a shell-shaped roller bearing which holds rollers built inside an outer ring with the holding protrusion where both ends of the outer ring are bent. CONSTITUTION:The axial length of a roller 5b which is built in lastly out of rollers stored in an outer ring 1 is formed shorter than those of the other rollers. Longer rollers 5a are incorporated with the outer ring 1 formed to the final shape, and finally shorter rollers 5a are pressed in from between the holding protrusions 4, 4 of the outer ring.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】この発明は、総ころタイプのシェ
ル形ころ軸受とその製造方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a full-roller type shell roller bearing and a method for manufacturing the same.

【０００２】[0002]

【従来の技術及びその課題】従来、総ころタイプのシェ
ル形ころ軸受の外輪は、図４（ａ）に示すように、円筒
形に形成した金属板２の両端部に、径方向内方へ屈曲す
るフランジ３、３を形成した後、金属板２の内側にころ
５を組込み、全てのころ５が組込まれた後、図４（ｂ）
に示すように各フランジ３、３の先端を軸方向内方へ屈
曲させて保持突起４、４を形成し、この各保持突起４、
４によりころ５の脱落を防止するようにしている。2. Description of the Related Art Conventionally, as shown in FIG. 4 (a), an outer ring of a full-roller type shell roller bearing has a cylindrical metal plate 2 at both ends thereof, which is radially inward. After forming the bent flanges 3 and 3, the rollers 5 are incorporated inside the metal plate 2, and after all the rollers 5 are incorporated, FIG.
As shown in FIG. 3, the tip ends of the flanges 3 and 3 are bent inward in the axial direction to form the holding projections 4 and 4, and the holding projections 4 and 4 are formed.
The roller 4 prevents the roller 5 from falling off.

【０００３】上記の外輪の製造において、保持突起４、
４を形成するための外輪の外面側は屈曲する前に予め防
浸炭処理を行ない、曲げ込み時に発生する割れを防止し
ているが、保持突起４、４の内面側は、ころ５の端面と
の接触により摩耗が発生しやすいため、防浸炭処理を施
すことができず、浸炭処理した状態におく必要がある。
このため、金属板２を屈曲した時に保持突起４、４の内
面側に微細な割れが発生することがあり、軸受の耐摩耗
性の上で問題を有していた。In manufacturing the above outer ring, the holding projections 4,
The outer surface side of the outer ring for forming 4 is carburized in advance before bending to prevent cracks generated during bending, but the inner surface sides of the holding protrusions 4 and 4 are different from the end surface of the roller 5. Since abrasion is likely to occur due to the contact with, it is necessary to keep the carburized state because it cannot be carburized.
Therefore, when the metal plate 2 is bent, fine cracks may occur on the inner surface side of the holding protrusions 4 and 4, which causes a problem in wear resistance of the bearing.

【０００４】また、防浸炭処理は、金属板の曲げ工程や
ころの組込み工程とは作業内容が異なる個別処理であ
り、しかもその処理に多くの工程を必要とするため、工
程の途中で防浸炭処理を入れることは製造工程の流れを
悪くし、作業能率を低下させる問題がある。Further, the carburization-preventing treatment is an individual treatment whose work content is different from the bending process of the metal plate and the process of incorporating the rollers, and moreover, many processes are required for the treatment. Incorporating the treatment deteriorates the flow of the manufacturing process and lowers the work efficiency.

【０００５】そこで、この発明は、上記の問題を解決
し、外輪の保持突起における割れの発生を防止でき、効
率のよい軸受の組立て行なえるシェル形ころ軸受とその
製造方法を提供することを目的としている。SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a shell type roller bearing which solves the above problems, can prevent the occurrence of cracks in the holding projections of the outer ring, and can assemble the bearing efficiently, and a manufacturing method thereof. I am trying.

【０００６】[0006]

【課題を解決するための手段】上記の課題を解決するた
め、この発明のシェル形ころ軸受は、円筒形に形成した
金属板の両端に、その端部から径方向内方に屈曲するフ
ランジと、この各フランジの先端から軸方向内方へ屈曲
する保持突起とを設けて外輪を形成し、その外輪の内部
に収納した複数のころの両端部を上記各保持突起で保持
し、上記ころのうち少なくとも１個のころの軸方向長さ
を他のころより短くし、この短いころの長さ寸法を、他
のころを収納した外輪の間隙に短いころを各保持突起の
間から圧入でき、かつ上記短いころと外輪の軸線を平行
にした状態で短いころの両端部が各保持突起で抜け止め
される大きさで形成したのである。In order to solve the above-mentioned problems, the shell roller bearing of the present invention has a cylindrical metal plate having a flange which is bent inward in the radial direction from both ends of the metal plate. , A retaining projection that is bent inward in the axial direction from the tip of each flange is provided to form an outer ring, and both ends of the plurality of rollers housed inside the outer ring are retained by the respective retaining projections. The axial length of at least one of the rollers is made shorter than the other rollers, and the length of this short roller can be press-fitted into the gap of the outer ring accommodating the other roller from between the holding projections. Further, both ends of the short roller are formed in such a size that they are prevented from coming off by the respective holding projections in a state where the axes of the short roller and the outer ring are parallel to each other.

【０００７】また、この発明の製造方法は、円筒形に形
成した金属板の両端に、その端部から径方向内方に屈曲
するフランジと、この各フランジの先端から軸方向内方
へ屈曲する保持突起を設けて外輪を形成し、その外輪の
内部に所定数より少ない数のころを収納した後、その収
納したころより軸方向長さが短いころを、上記外輪の保
持突起の間から圧入し、外輪内部に所定数のころを収納
する方法としたのである。Further, according to the manufacturing method of the present invention, flanges bent inward in the radial direction from both ends of the metal plate formed in a cylindrical shape and bent inward in the axial direction from the tips of the respective flanges. An outer ring is formed by providing a retaining protrusion, and a number of rollers smaller than a predetermined number is stored inside the outer ring, and then a roller having a shorter axial length than the accommodated rollers is press-fitted between the retaining protrusions of the outer ring. However, the method is to store a predetermined number of rollers inside the outer ring.

【０００８】[0008]

【作用】上記のシェル形ころ軸受及び製造方法において
は、最後に組込むローラの長さだけを短くし、長いころ
を収納した後短いローラを外輪に圧入して組込むので、
ころの圧入に無理がなく、外輪をころ組込み前に予めフ
ランジと保持突起を備える最終形状に成形できる。この
ため、外輪を曲げ工程により完成形状まで成形した後熱
処理を行なうことにより、防浸炭工程を省略することが
できる。In the shell type roller bearing and the manufacturing method described above, only the length of the roller to be finally assembled is shortened, and after the long roller is stored, the short roller is press-fitted into the outer ring to be assembled.
There is no difficulty in press-fitting the rollers, and the outer ring can be molded into a final shape including a flange and a holding projection before the roller is assembled. Therefore, the carburization-preventing step can be omitted by performing heat treatment after forming the outer ring into a finished shape by a bending step.

【０００９】また、外輪の曲げ工程や熱処理工程ところ
の組込み工程をそれぞれ連続して行なえるので、製造工
程の流れが良くなり、製造能率を向上させることができ
る。Further, since the bending step of the outer ring and the assembling step such as the heat treatment step can be continuously performed, the flow of the manufacturing process can be improved and the manufacturing efficiency can be improved.

【００１０】[0010]

【実施例】図１乃至３は、この発明に係る実施例を示し
ている。図１に示すように、外輪１は、薄肉の金属板２
を円筒形に形成し、その金属板２の両端に径方向内方へ
屈曲するフランジ３、３を設け、その各フランジ３、３
の先端に軸方向内方へ屈曲する保持突起４、４を設けて
形成される。1 to 3 show an embodiment according to the present invention. As shown in FIG. 1, the outer ring 1 includes a thin metal plate 2
Is formed into a cylindrical shape, and flanges 3 and 3 that are bent inward in the radial direction are provided at both ends of the metal plate 2.
Is formed by providing holding projections 4 and 4 that are bent inward in the axial direction at the tip of the.

【００１１】この外輪１の成形は、曲げ加工や打抜き加
工等の複数の塑性加工により行なわれるが、この塑性加
工によって最終形状まで成形した後、外輪１に熱処理を
行ない、所要の硬度や強度を付与する。The outer ring 1 is formed by a plurality of plastic workings such as bending and punching. After the plastic working is carried out to a final shape, the outer ring 1 is heat treated to obtain the required hardness and strength. Give.

【００１２】一方、外輪１に収納されるころは、図２に
示すように、１個のころ５ｂを除く他のころ５ａが、同
じ軸方向長さＬ1 で形成され、残りの１個のころ５ｂの
軸方向長さＬ2 が、他のころ５ａよりも短く（Ｌ2 ＜Ｌ
1 ）形成されている。On the other hand, as shown in FIG. 2, in the rollers accommodated in the outer ring 1, the other rollers 5a except one roller 5b are formed with the same axial length L 1 and the remaining one roller 5a is formed. The axial length L 2 of the roller 5b is shorter than the other rollers 5a (L 2 <L
1 ) Formed.

【００１３】上記の各ころ５ａ、５ｂは、中央に円筒形
の転動面６を設け、両端部７、７を、転動面６からテー
パ状に縮径する先細形状で形成されている。Each of the rollers 5a and 5b is provided with a cylindrical rolling surface 6 at the center, and both end portions 7, 7 are formed in a tapered shape in which the rolling surface 6 is tapered in diameter.

【００１４】また、外輪１の両保持突起４、４間の距離
Ｔは、上記各ころ５ａ、５ｂの軸方向長さＬ1 Ｌ2 より
小さく、ころ５ａ、５ｂの転動面６の長さよりも大きく
形成されており、ころ５ａ、５ｂと外輪１の軸線が平行
になった状態で、各ころ５ａ、５ｂの両端部７、７が保
持突起４、４に係合して抜け止めされるように形成され
る。Further, the distance T between the holding protrusions 4 and 4 of the outer ring 1 is smaller than the axial length L 1 L 2 of the rollers 5a and 5b, and is smaller than the length of the rolling surface 6 of the rollers 5a and 5b. Is also large, and both ends 7 and 7 of the rollers 5a and 5b are engaged with the holding protrusions 4 and 4 to prevent the rollers 5a and 5b from coming off with the axes of the rollers 5a and 5b and the outer ring 1 parallel to each other. Is formed as.

【００１５】また、短いころ５ｂの軸方向長さＬ2 は、
図３のように軸線を傾かせた状態で、他の全てのころ５
ａが収納された外輪１内側の間隙に、両端部７、７を各
保持突起４、４に圧入させて収納させることができるよ
うな大きさに設定されている。この場合、短いころ５ｂ
の圧入に無理がないような圧入代は、０．０５〜０．１
５mmの範囲にある。The axial length L 2 of the short roller 5b is
As shown in Fig. 3, with the axis inclined, all other rollers 5
The size is set such that both ends 7, 7 can be press-fitted into the holding protrusions 4, 4 and stored in the gap inside the outer ring 1 in which a is stored. In this case, short roller 5b
The press-fitting allowance for press-fitting is 0.05 to 0.1
It is in the range of 5 mm.

【００１６】上記のシェル形ころ軸受においては、図１
のように曲げ工程による成形と熱処理を完了した外輪１
の内部に、先ず、長い軸方向長さＬ1 をもつころ５ａを
組込み、最後に短いころ５ｂを、外輪１の両端部に屈曲
した鍔の弾性変形を利用して両保持突起４、４の間から
圧入し、外輪１の内部に収納する。In the shell type roller bearing described above, FIG.
Outer ring 1 that has been molded and heat treated in the bending process as shown in
First, a roller 5a having a long axial length L 1 is assembled inside, and finally, a short roller 5b is used by utilizing elastic deformation of the brim bent at both ends of the outer ring 1 to hold both the holding projections 4 and 4. It is pressed in from the space and stored inside the outer ring 1.

【００１７】この組込み作業では、組込み前に外輪１を
予め最終形状まで成形させるため、外輪１の保持突起
４、４間の距離Ｔや、各保持突起４、４の高さ寸法Ｍを
高い精度で形成することができる。このため、最後のこ
ろ５ｂの圧入代を高い寸法精度で設定でき、その圧入に
無理が生じないため、組込み時のころの破損や外輪の割
れ等を防止することができる。In this assembling work, since the outer ring 1 is preliminarily molded to the final shape before the assembling, the distance T between the holding protrusions 4 and 4 of the outer ring 1 and the height dimension M of each holding protrusion 4 and 4 are highly accurate. Can be formed with. For this reason, the press-fitting margin of the last roller 5b can be set with high dimensional accuracy, and since the press-fitting does not occur unduly, it is possible to prevent breakage of the roller and breakage of the outer ring during assembly.

【００１８】また、外輪１を最終形状まで成形した後、
熱処理を行なうので、多くの工数を必要としていた防浸
炭工程を省略できる。加えて熱処理後に保持突起４、４
を形成するための曲げ加工を行なう必要もなくなるた
め、外輪１の保持突起４、４の内面側における微細な割
れの発生も無くすことができる。After molding the outer ring 1 to the final shape,
Since the heat treatment is performed, it is possible to omit the carburization-preventing step, which requires a lot of man-hours. In addition, holding protrusions 4 and 4 after heat treatment
Since it is not necessary to perform a bending process for forming the above, it is possible to eliminate the occurrence of fine cracks on the inner surface side of the holding projections 4 and 4 of the outer ring 1.

【００１９】なお、上記の例では、最終に組込む１本の
ころ５ａの長さだけを他のころ５ａより短くしたが、必
要に応じて２本以上のころの長さを他のものより短くす
るようにしてもよい。In the above example, the length of one roller 5a to be finally assembled is shorter than that of the other rollers 5a, but if necessary, the length of two or more rollers may be shorter than that of the other rollers. You may do it.

【００２０】[0020]

【効果】以上のように、この発明は、短いころを最後に
圧入して圧入に無理が生じないようにし、外輪をころ組
込み前に最終形状まで成形できるようにしたので、外輪
の成形後熱処理を行なうことにより、防浸炭処理を省略
することができ、軸受製造の能率を大幅に向上させるこ
とができる。[Effect] As described above, according to the present invention, the short roller is press-fitted lastly so that the press-fitting does not occur unduly, and the outer ring can be molded to the final shape before the roller is assembled. By carrying out the above, the carburization-proof treatment can be omitted, and the efficiency of bearing production can be greatly improved.

【００２１】また、熱処理後の保持突起の曲げ工程を無
くすことができるので、外輪の内面側における微細な割
れの発生を防止でき、高品質で耐久性に優れた軸受を形
成できる効果がある。Further, since the step of bending the holding projections after the heat treatment can be eliminated, the generation of fine cracks on the inner surface side of the outer ring can be prevented, and the bearing of high quality and excellent durability can be formed.

【図面の簡単な説明】[Brief description of drawings]

【図１】実施例の外輪を示す斜視図FIG. 1 is a perspective view showing an outer ring of an embodiment.

【図２】同上のころを示す図FIG. 2 is a diagram showing the same as above.

【図３】実施例の外輪にころを組込む方法を示す図FIG. 3 is a diagram showing a method of incorporating rollers in the outer ring of the embodiment.

【図４】（ａ）及び（ｂ）はそれぞれ従来の軸受の製造
方法を示す図4A and 4B are views showing a conventional method for manufacturing a bearing, respectively.

【符号の説明】[Explanation of symbols]

１ 外輪 ２ 金属板 ３ フランジ ４ 保持突起 ５ａ、５ｂ ころ ６ 転動面 ７ 両端部 1 Outer ring 2 Metal plate 3 Flange 4 Holding protrusion 5a, 5b Roller 6 Rolling surface 7 Both ends

Claims (2)

【特許請求の範囲】[Claims] 【請求項１】 外輪と、その内部に収納される複数のこ
ろとから成り、上記外輪を、円筒形に形成した金属板の
両端に、その端部から径方向内方に屈曲するフランジ
と、この各フランジの先端から軸方向内方へ屈曲する保
持突起とを設けて形成し、その外輪の内部に収納したこ
ろの両端部を上記各保持突起で保持したシェル形ころ軸
受において、上記ころのうち少なくとも１個のころの軸
方向長さを他のころより短くし、この短いころの長さ寸
法を、他のころを収納した外輪の間隙に上記短いころを
各保持突起の間から圧入でき、かつ上記短いころと外輪
の軸線を平行にした状態で短いころの両端部が各保持突
起で抜け止めされる大きさで形成したことを特徴とする
シェル形ころ軸受。1. A flange consisting of an outer ring and a plurality of rollers housed therein, the outer ring being provided on both ends of a metal plate formed into a cylindrical shape, and flanges which are bent inward in the radial direction from the ends thereof. In a shell type roller bearing in which a retaining projection that is bent inward in the axial direction from the tip of each flange is provided, and both ends of the roller housed inside the outer ring are retained by the retaining projections. At least one of the rollers has a shorter axial length than the other rollers, and the length of this shorter roller can be press-fitted into the gap of the outer ring accommodating the other roller from between the holding projections. A shell type roller bearing, characterized in that both ends of the short roller are formed so as to be prevented from coming off by the respective holding projections in a state where the axes of the short roller and the outer ring are parallel to each other. 【請求項２】 円筒形に形成した金属板の両端に、その
端部から径方向内方に屈曲するフランジと、この各フラ
ンジの先端から軸方向内方へ屈曲する保持突起を設けて
外輪を形成し、その外輪の内部に所定数より少ない数の
ころを収納した後、その収納したころより軸方向長さが
短いころを、上記外輪の保持突起の間から圧入し、外輪
内部に所定数のころを収納することを特徴とするシェル
形ころ軸受の製造方法。2. An outer ring is provided by providing a flange bent inward in a radial direction from both ends of a metal plate formed in a cylindrical shape and a holding projection bent inward in an axial direction from a tip of each flange. After forming a number of rollers smaller than the specified number inside the outer ring, press the rollers with a shorter axial length than the housed rollers through the holding protrusions of the outer ring, A method for manufacturing a shell-type roller bearing, characterized by accommodating rollers.
JP5097632A 1993-04-23 1993-04-23 Shell-shaped roller bearing and manufacture thereof Pending JPH06307456A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5097632A JPH06307456A (en) 1993-04-23 1993-04-23 Shell-shaped roller bearing and manufacture thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5097632A JPH06307456A (en) 1993-04-23 1993-04-23 Shell-shaped roller bearing and manufacture thereof

Publications (1)

Publication Number Publication Date
JPH06307456A true JPH06307456A (en) 1994-11-01

Family

ID=14197542

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5097632A Pending JPH06307456A (en) 1993-04-23 1993-04-23 Shell-shaped roller bearing and manufacture thereof

Country Status (1)

Country Link
JP (1) JPH06307456A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1566557A1 (en) * 2004-02-20 2005-08-24 Ntn Corporation Roller bearing and method of assembling the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1566557A1 (en) * 2004-02-20 2005-08-24 Ntn Corporation Roller bearing and method of assembling the same

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