JPH10184677A - Preload double row tapered roller bearing for receiving thrust load - Google Patents
Preload double row tapered roller bearing for receiving thrust loadInfo
- Publication number
- JPH10184677A JPH10184677A JP8356692A JP35669296A JPH10184677A JP H10184677 A JPH10184677 A JP H10184677A JP 8356692 A JP8356692 A JP 8356692A JP 35669296 A JP35669296 A JP 35669296A JP H10184677 A JPH10184677 A JP H10184677A
- Authority
- JP
- Japan
- Prior art keywords
- preload
- coil spring
- bearing
- piston
- tapered roller
- 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
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
- F16C25/00—Bearings for exclusively rotary movement adjustable for wear or play
- F16C25/06—Ball or roller bearings
- F16C25/08—Ball or roller bearings self-adjusting
- F16C25/083—Ball or roller bearings self-adjusting with resilient means acting axially on a race ring to preload the bearing
-
- 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
-
- 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
- F16C2322/00—Apparatus used in shaping articles
- F16C2322/12—Rolling apparatus, e.g. rolling stands, rolls
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
- Support Of The Bearing (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、鉄鋼用圧延機スラ
スト荷重受などに使用される複列円すいころ軸受に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a double-row tapered roller bearing used for receiving a thrust load of a rolling mill for steel.
【０００２】[0002]
【従来の技術】内輪が一体で外輪が二分割された鉄鋼用
圧延機スラスト荷重受などに使用される複列円すいころ
軸受は、スミアリング防止対策として適性な予圧を加え
て使用される場合が多い。2. Description of the Related Art Double-row tapered roller bearings used for receiving the thrust load of a steel rolling mill with an inner ring integrated and an outer ring divided into two parts are sometimes used with an appropriate preload applied as a measure to prevent smearing. Many.
【０００３】従来の予圧を加える方法には、例えば軸受
の外輪100 回りの軸受部品200 に、コイルバネ400 と取
付摺動ボルト500 からなる予圧機構300 を設け、圧延機
に組み込まれたときに、上記コイルバネ400 のバネ力に
よる予圧機構300 から発生する予圧荷重を受けるものが
ある（図５）。また、外輪100 の外側に、側板700 内に
コイルバネ800 を内蔵した予圧機構600 を設置し、上記
コイルバネ800 のバネ力による予圧機構600 から発生す
る予圧荷重を受けるものなどがある（図６）。In a conventional method of applying a preload, for example, a preload mechanism 300 including a coil spring 400 and a mounting sliding bolt 500 is provided on a bearing part 200 around an outer ring 100 of a bearing. Some of them receive a preload generated from the preload mechanism 300 by the spring force of the coil spring 400 (FIG. 5). A preload mechanism 600 having a coil spring 800 built therein is installed inside the side plate 700 outside the outer ring 100 to receive a preload generated from the preload mechanism 600 by the spring force of the coil spring 800 (FIG. 6).
【０００４】しかし、上記従来技術のように軸受部品20
0 に予圧機構300 を設けたものにあっては、軸受部品の
数が増え、更に形状が複雑かつ大型化するという問題点
があった。また、側板700 にコイルバネ800 を内蔵した
予圧機構600 を設置するものにあっては、正味の軸受幅
が減少し、負荷容量の大幅な低下が生じる虞れがあっ
た。However, as in the above-mentioned prior art, the bearing component 20
In the case where the preload mechanism 300 is provided at 0, there is a problem that the number of bearing parts increases, and the shape becomes more complicated and larger. In the case where the preload mechanism 600 having the coil spring 800 built in is installed on the side plate 700, the net bearing width may be reduced, and the load capacity may be significantly reduced.
【０００５】[0005]
【発明が解決しようとする課題】そこで本発明者は、鋭
意研究、実験を重ねた結果、外輪に予圧機構を内蔵する
ことによって、従来技術が抱えていた不具合を解消すべ
く本発明の完成にいたった。The present inventor has conducted intensive research and experiments, and as a result, completed the present invention in order to eliminate the disadvantages of the prior art by incorporating a preload mechanism in the outer ring. It was just.
【０００６】本発明は、従来技術の有するこのような問
題点に鑑みなされたものであり、その目的とするところ
は、外輪が二分割されたスラスト荷重のみを負荷するス
ラスト荷重受け用の複列円すいころ軸受であって、軸受
の負荷容量を減少させることなく、予圧荷重を軸受自身
で加えられることの可能なスラスト荷重受け用予圧複列
円すいころ軸受を提供することである。The present invention has been made in view of the above-mentioned problems of the prior art, and an object of the present invention is to provide a double row for receiving a thrust load in which an outer ring is subjected to only a thrust load having two divided outer rings. An object of the present invention is to provide a preload double-row tapered roller bearing for receiving a thrust load, which can apply a preload by itself without reducing the load capacity of the bearing, which is a tapered roller bearing.
【０００７】[0007]
【課題を解決するための手段】上記目的を達成するため
に本発明がなした技術的手段は、外輪が二分割されたス
ラスト荷重のみを負荷するスラスト荷重受け用の複列円
すいころ軸受であって、該軸受の外輪背面側にバネ力に
よる予圧発生機構を内蔵したことである。The technical means achieved by the present invention to achieve the above object is a double-row tapered roller bearing for receiving a thrust load in which the outer ring receives only a thrust load, which is divided into two parts. Thus, a preload generating mechanism by a spring force is built in the outer ring rear side of the bearing.
【０００８】[0008]
【作用】上記技術的手段により、本発明軸受が圧延機に
組み込まれると、圧延機ハウジングの外輪と相対するス
ラスト受け部品によって軸受外輪の背面側から、該外輪
に内蔵された予圧発生機構が押圧されて予圧荷重が発生
する。When the bearing of the present invention is incorporated in a rolling mill by the above technical means, a preload generating mechanism built in the outer ring of the rolling mill housing is pressed from the rear side of the outer ring of the bearing by a thrust receiving part facing the outer ring of the rolling mill housing. And a preload is generated.
【０００９】[0009]
【実施例】以下、本発明スラスト荷重受け用予圧複列円
すいころ軸受の一実施例を図に基づいて説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a preload double-row tapered roller bearing for receiving a thrust load according to the present invention will be described below with reference to the drawings.
【００１０】図１，２は本発明の第一実施例、図３，４
は第二実施例をそれぞれ示し、各図面では正面組合せ，
外輪分割形の複列円すいころ軸受を示す。また、図中
１，１は外輪、２は内輪、３は円すいころ（正面組合
せ）、４は保持器、そして５は予圧発生機構を示す。な
お、本実施例において内輪２、円すいころ３、および保
持器４にあっては周知構造であるため特にその説明は省
略する。FIGS. 1 and 2 show a first embodiment of the present invention, and FIGS.
Shows the second embodiment, respectively, and in each of the drawings,
3 shows a double-row tapered roller bearing of an outer ring split type. In the drawings, reference numerals 1 and 1 denote outer rings, 2 denotes inner rings, 3 denotes tapered rollers (front combination), 4 denotes a retainer, and 5 denotes a preload generating mechanism. In the present embodiment, the inner ring 2, the tapered rollers 3, and the retainer 4 have a well-known structure, and a description thereof will be omitted.
【００１１】予圧発生機構５は、外輪１，１に夫々内蔵
されており、例えば外輪１の背面１ａ側に、該背面１ａ
側から内方（スラスト方向）に向けて所望深さの内蔵用
穴６を設け、そして該内蔵用穴６に鍔付ピストン７を挿
入すると共に、該ピストン７の鍔部８と内蔵用穴６の内
底面６ａとの間にわたってコイルバネ１０を配して上記
ピストン７がスラスト方向に移動可能に構成されてい
る。The preload generating mechanism 5 is incorporated in each of the outer races 1, 1, for example, on the back 1 a side of the outer race 1.
A built-in hole 6 having a desired depth is provided inward from the side (in the thrust direction), a flanged piston 7 is inserted into the built-in hole 6, and a flange portion 8 of the piston 7 and the built-in hole 6 are formed. The piston 7 is configured to be movable in the thrust direction by disposing a coil spring 10 between the piston 7 and the inner bottom surface 6a.
【００１２】ピストン７は、コイルバネ１０の一端を受
ける鍔部８を備えると共に、背面７ａ側に突起９を突設
して構成されている。図面において突起９は細軸状に形
成されているが、その形状、長さなどは任意であり何等
限定はされない。The piston 7 has a flange 8 for receiving one end of a coil spring 10 and a projection 9 protruding from the back surface 7a. In the drawings, the projection 9 is formed in a fine shaft shape, but its shape, length, etc. are arbitrary and are not limited at all.
【００１３】コイルバネ１０は、特にその形状などに限
定されないが、圧延機ハウジングの外輪と相対するスラ
スト受け部品の押圧時に軸受の疲れ寿命を短くすること
なく、かつ摩擦モーメントや温度上昇などを大きくする
ことなく適性な予圧荷重を発生できるものとする。The coil spring 10 is not particularly limited in its shape and the like, but it does not shorten the fatigue life of the bearing when pressing the thrust receiving part facing the outer ring of the rolling mill housing, and also increases the friction moment and temperature rise. An appropriate preload can be generated without any preload.
【００１４】なお、本実施例では予圧を発生させるもの
として上記のようにコイルバネ１０を用いているが、適
性な予圧荷重を発生し得る弾性部材であればこれに限定
されることはなく、例えば板バネ、皿バネなど本発明の
範囲内における変更は自由である。In this embodiment, the coil spring 10 is used to generate the preload as described above. However, the present invention is not limited to this as long as it is an elastic member that can generate an appropriate preload. Modifications such as a leaf spring and a disc spring within the scope of the present invention are free.
【００１５】上記内蔵用穴６は、上記せるように外輪背
面１ａ側の円周方向に一個乃至複数個設けるが、その配
設数は適性な予圧荷重を加えるに適した数とし、またそ
の深さ、形状も円形、矩形、楕円形等任意である。従っ
て、ピストン７およびコイルバネ１０も内蔵用穴６に合
わせてその配設数および形状を選択変更する。As described above, one or more internal holes 6 are provided in the circumferential direction on the outer ring rear surface 1a side, and the number of the internal holes 6 is set to a number suitable for applying an appropriate preload, and The shape is arbitrary, such as circular, rectangular, and elliptical. Therefore, the number and shape of the pistons 7 and the coil springs 10 are selectively changed according to the internal holes 6.
【００１６】また、内蔵用穴は、上記せるように単独の
穴形状とせず、外輪１の背面１ａ側に円周方向にわたっ
て一連の溝状に設けられているものであってもよく、こ
の場合にあっては圧延機ハウジングの外輪と相対するス
ラスト受け部品による押圧作動時に、コイルバネ１０が
円周方向に逃げないように構成されるものとする（図示
省略）。例えば、図示せしめないが溝状に形成した内蔵
穴の各コイルバネ内蔵箇所に夫々左右壁面を立設させて
各コイルバネを覆うようにすることで各コイルバネの溝
方向（円周方向）への逃げを防止したり、あるいは各コ
イルバネの内蔵箇所壁面に嵌合溝を設けると共に、該嵌
合溝に合致する嵌合片をピストン外周に突設し、該嵌合
片を嵌合溝に沿って摺動させることにより、コイルバネ
の溝方向（円周方向）への逃げを防止するなどして対応
する。In addition, the internal hole may not be formed as a single hole as described above, but may be provided in a series of grooves on the back surface 1a side of the outer ring 1 in the circumferential direction. In this case, it is configured such that the coil spring 10 does not escape in the circumferential direction at the time of the pressing operation by the thrust receiving part facing the outer ring of the rolling mill housing (not shown). For example, although not shown, the left and right wall surfaces are respectively erected at the built-in holes of the groove-shaped built-in holes to cover the respective coil springs, so that each coil spring escapes in the groove direction (circumferential direction). To prevent or provide a fitting groove on the wall surface where the coil spring is built in, a fitting piece matching the fitting groove is protruded on the outer periphery of the piston, and the fitting piece slides along the fitting groove. This prevents the coil spring from escaping in the groove direction (circumferential direction).
【００１７】また、図中１１は、ピストン７の抜け止め
の為に取り付けられている止め輪である。In the drawing, reference numeral 11 denotes a retaining ring attached for preventing the piston 7 from coming off.
【００１８】従って、上記軸受が圧延機に組み込まれた
場合には、各ピストン７の背面７ａ側に突設されている
突起９が圧延機ハウジングの外輪と相対するスラスト受
け部品（図示省略）によって押されるため、該ピストン
７と内蔵用穴６の内底面６ａとの間にわたって配設され
ているコイルバネ１０が、その弾発力に抗して押圧され
ることによって予圧荷重が発生する。Therefore, when the above-described bearing is incorporated in a rolling mill, the projection 9 protruding from the rear surface 7a of each piston 7 is provided by a thrust receiving part (not shown) facing the outer ring of the rolling mill housing. As a result, the coil spring 10 disposed between the piston 7 and the inner bottom surface 6a of the internal hole 6 is pressed against its resilient force, thereby generating a preload.
【００１９】図３，４に示す本発明の第二実施例は、上
記第一実施例の軸受を構成するピストン７にＯリング１
２を装着しているものであって、これによりコイルバネ
１０側へ金属片、ゴミ又は水等の異物が侵入することを
防止している。従って、上記異物の侵入防止によってピ
ストン７の円滑作動が図れる。FIGS. 3 and 4 show a second embodiment of the present invention, in which an O-ring 1 is attached to a piston 7 constituting the bearing of the first embodiment.
2 to prevent foreign substances such as metal pieces, dust, and water from entering the coil spring 10 side. Therefore, the smooth operation of the piston 7 can be achieved by preventing the foreign matter from entering.
【００２０】また、内蔵用穴６、ピストン７、コイルバ
ネ１０などその他の構成は第一実施例と同一であって同
一箇所に同一符号を付してその説明は省略する。The other components such as the built-in hole 6, the piston 7, the coil spring 10, and the like are the same as those in the first embodiment.
【００２１】[0021]
【発明の効果】本発明は上記のように軸受の外輪背面側
にバネ力による予圧発生機構を内蔵した構成としたた
め、定圧予圧を図る上において軸受以外の部品を必要と
しない。従って、従来のように軸箱部品数を増やした
り、軸受回りの寸法が大きくなったりという不都合がな
くなるため、軸箱部品数の低減化および軸箱部品の簡素
化が図られると共に、軸受回りの形状単純化および縮小
化が図られる。As described above, according to the present invention, since a preload generating mechanism using a spring force is incorporated on the back side of the outer ring of the bearing, parts other than the bearing are not required for achieving a constant pressure preload. This eliminates the disadvantages of increasing the number of parts of the shaft box and increasing the dimensions around the bearing as in the related art, so that the number of parts of the shaft box can be reduced and the parts of the shaft box can be simplified. The shape is simplified and reduced.
【００２２】また、従来のように側板内にバネを内蔵し
た予圧機構も不要となり、予圧荷重を軸受自身で加えら
れるため、正味の軸受幅の減少もなく、負荷容量の大幅
な低下も生じない。なお、本発明は、アキシャル方向の
予圧が必要な装置、軸受形成であれば、圧延機の複列円
すいころ軸受以外にも適用できる。他の装置例として
は、減速機等のスラスト軸受部や、また他の軸受形式と
しては複列以外の円すいころ軸受、スラスト円筒ころ軸
受、スラスト自動調心ころ軸受等に適用でき、軸受回り
の形状単純化及び縮小化を図ることができる。Further, there is no need for a preload mechanism in which a spring is incorporated in the side plate as in the prior art, and the preload can be applied by the bearing itself, so that the net bearing width does not decrease and the load capacity does not largely decrease. . The present invention can be applied to devices other than double-row tapered roller bearings of rolling mills, as long as the devices and bearings require preload in the axial direction. Examples of other devices include thrust bearings such as reduction gears, and other types of bearings include tapered roller bearings other than double row, cylindrical thrust roller bearings, and thrust self-aligning roller bearings. The shape can be simplified and reduced in size.
【図１】本発明の一実施例を示す縦断正面図。FIG. 1 is a vertical sectional front view showing an embodiment of the present invention.
【図２】要部拡大縦断正面図。FIG. 2 is an enlarged vertical sectional front view of a main part.
【図３】本発明の他の実施例を示す縦断正面図。FIG. 3 is a longitudinal sectional front view showing another embodiment of the present invention.
【図４】要部拡大縦断正面図。FIG. 4 is an enlarged vertical sectional front view of a main part.
【図５】従来技術を示す縦断正面図。FIG. 5 is a longitudinal sectional front view showing a conventional technique.
【図６】他の従来技術を示す縦断正面図。FIG. 6 is a vertical sectional front view showing another conventional technique.
１：外輪 １ａ：背面側 ２：内輪 ５：予圧発生機構 ６：内蔵用穴 ７：ピストン １０：コイルバネ 1: Outer ring 1a: Back side 2: Inner ring 5: Preload generating mechanism 6: Built-in hole 7: Piston 10: Coil spring
Claims (1)
負荷するスラスト荷重受け用の複列円すいころ軸受であ
って、該軸受の外輪背面側にバネ力による予圧発生機構
を内蔵したことを特徴とするスラスト荷重受け用予圧複
列円すいころ軸受。1. A double-row tapered roller bearing for receiving a thrust load, wherein the outer ring receives only a thrust load divided into two parts, wherein a preload generating mechanism by a spring force is incorporated on the back side of the outer ring of the bearing. Preload double row tapered roller bearings for receiving thrust loads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8356692A JPH10184677A (en) | 1996-12-27 | 1996-12-27 | Preload double row tapered roller bearing for receiving thrust load |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8356692A JPH10184677A (en) | 1996-12-27 | 1996-12-27 | Preload double row tapered roller bearing for receiving thrust load |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10184677A true JPH10184677A (en) | 1998-07-14 |
Family
ID=18450307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8356692A Pending JPH10184677A (en) | 1996-12-27 | 1996-12-27 | Preload double row tapered roller bearing for receiving thrust load |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10184677A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006033320A1 (en) * | 2004-09-21 | 2006-03-30 | Ntn Corporation | Double-row self-aligning roller bearing and main shaft support structure for wind-turbine generator |
| JP2007285383A (en) * | 2006-04-14 | 2007-11-01 | Ntn Corp | Tapered roller bearing |
| JP2007285384A (en) * | 2006-04-14 | 2007-11-01 | Ntn Corp | Tapered roller bearing |
| US7918649B2 (en) | 2003-11-18 | 2011-04-05 | Ntn Corporation | Double-row self-aligning roller bearing and device for supporting wind turbine generator main shaft |
| CN103314225A (en) * | 2010-10-16 | 2013-09-18 | 谢夫勒科技股份两合公司 | Bearing ring comprising a hydraulic preloading means and bearing assembly comprising such a bearing ring |
| CN103994148A (en) * | 2014-05-29 | 2014-08-20 | 张家港市Aaa轴承有限公司 | Self-aligning roller bearing inner ring convenient for roller installation |
| EP3070351A4 (en) * | 2013-11-13 | 2016-11-30 | Ntn Toyo Bearing Co Ltd | Bearing preloading device |
| CN112983973A (en) * | 2021-02-22 | 2021-06-18 | 蚌埠市昊德汽车轴承有限责任公司 | Replaceable pre-tightening spring tapered roller bearing |
-
1996
- 1996-12-27 JP JP8356692A patent/JPH10184677A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7918649B2 (en) | 2003-11-18 | 2011-04-05 | Ntn Corporation | Double-row self-aligning roller bearing and device for supporting wind turbine generator main shaft |
| WO2006033320A1 (en) * | 2004-09-21 | 2006-03-30 | Ntn Corporation | Double-row self-aligning roller bearing and main shaft support structure for wind-turbine generator |
| US7922396B2 (en) | 2004-09-21 | 2011-04-12 | Ntn Corporation | Double row self-aligning roller bearing and main shaft support structure of wind power generator |
| JP2007285383A (en) * | 2006-04-14 | 2007-11-01 | Ntn Corp | Tapered roller bearing |
| JP2007285384A (en) * | 2006-04-14 | 2007-11-01 | Ntn Corp | Tapered roller bearing |
| JP4607044B2 (en) * | 2006-04-14 | 2011-01-05 | Ｎｔｎ株式会社 | Tapered roller bearings |
| CN103314225A (en) * | 2010-10-16 | 2013-09-18 | 谢夫勒科技股份两合公司 | Bearing ring comprising a hydraulic preloading means and bearing assembly comprising such a bearing ring |
| EP3070351A4 (en) * | 2013-11-13 | 2016-11-30 | Ntn Toyo Bearing Co Ltd | Bearing preloading device |
| US9863469B2 (en) | 2013-11-13 | 2018-01-09 | Ntn Corporation | Bearing preloading device |
| CN103994148A (en) * | 2014-05-29 | 2014-08-20 | 张家港市Aaa轴承有限公司 | Self-aligning roller bearing inner ring convenient for roller installation |
| CN112983973A (en) * | 2021-02-22 | 2021-06-18 | 蚌埠市昊德汽车轴承有限责任公司 | Replaceable pre-tightening spring tapered roller bearing |
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