JPH0322843A - Prepressure imparting device for rolling bearing of motor - Google Patents

Prepressure imparting device for rolling bearing of motor

Info

Publication number
JPH0322843A
JPH0322843A JP1152303A JP15230389A JPH0322843A JP H0322843 A JPH0322843 A JP H0322843A JP 1152303 A JP1152303 A JP 1152303A JP 15230389 A JP15230389 A JP 15230389A JP H0322843 A JPH0322843 A JP H0322843A
Authority
JP
Japan
Prior art keywords
bearing
spring
motor
preload
flange
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
JP1152303A
Other languages
Japanese (ja)
Inventor
Atsuo Nakamura
厚生 中村
Yukio Katsusawa
幸男 勝沢
Osamu Masutani
道 桝谷
Yasuyuki Nakazawa
中沢　康之
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.)
Fanuc Corp
Original Assignee
Fanuc Corp
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 Fanuc Corp filed Critical Fanuc Corp
Priority to JP1152303A priority Critical patent/JPH0322843A/en
Priority to PCT/JP1990/000717 priority patent/WO1990016108A1/en
Publication of JPH0322843A publication Critical patent/JPH0322843A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
    • H02K5/173—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
    • H02K5/1732—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings radially supporting the rotary shaft at both ends of the rotor
    • 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
    • F16C19/02—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
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/54—Systems consisting of a plurality of bearings with rolling friction
    • F16C19/546—Systems with spaced apart rolling bearings including at least one angular contact bearing
    • F16C19/547—Systems with spaced apart rolling bearings including at least one angular contact bearing with two angular contact rolling 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
    • F16C2380/00—Electrical apparatus
    • F16C2380/26—Dynamo-electric machines or combinations therewith, e.g. electro-motors and generators
    • 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
    • F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
    • F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
    • F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
    • F16C35/07—Fixing them on the shaft or housing with interposition of an element
    • F16C35/077—Fixing them on the shaft or housing with interposition of an element between housing and outer race ring

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Frames (AREA)
  • Support Of The Bearing (AREA)

Abstract

PURPOSE:To set the height of a spring at a desired level by freely setting the height of spring through operation of a stop screw and adjustment of an adjusting disc. CONSTITUTION:A prepressure applying unit is assembled by mounting a wave washer 6 on the end face S at a flange section 5'' hooked to the outer ring of bearing in a bearing box 5 then mounting an adjusting disc 7 on the washer 6 so that the flange 71 thereof may direct toward the bearing box. Then a sensor base 4 is fitted so that the inner circumferential face 40 thereof supports the outer circumferential faces of the bearing box and the adjusting disc. Using height (h) of the spring (wave washer) 6, i.e., the dimension L from the outer end face of the bearing to the outer face of the adjusting disc (thickness t1 at the flange section of the bearing + thickness t2 of the disc) is measured and set to a predetermined value by means of stop screws 8 in the screw holes 43 of the sensor base 4, then the sensor base 4 is secured to a bracket 2.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、モータのころがり軸受に対する予圧付与装置
に関するものであって、特に、グリース潤滑等によりＤ
ｍｎ値く〈軸受内径＋軸受外径）／２×回転数〉で８０
万以上回転させる高速回転用のモータに、好適に利用出
来るものである。Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a device for applying preload to a rolling bearing of a motor, and in particular, it relates to a device for applying preload to a rolling bearing of a motor.
mn value (bearing inner diameter + bearing outer diameter)/2 x rotation speed> is 80
It can be suitably used in a high-speed rotation motor that rotates more than 10,000 rotations.

〔従来の技術〕[Conventional technology]

ころがり軸受を備えたモータ（電動機）にあって高速回
転させるためには、軸受に対する潤滑手段と共に、軸受
に予圧を正確に付与してその内部隙間を適切に制御する
ことが必要である。若し予圧付与が不十分であれば、騒
音や摩損を生じ、与圧が過大であれば、軸受の温度上昇
から焼付に至る危険すらある。In order to rotate a motor (electric motor) equipped with a rolling bearing at high speed, it is necessary to lubricate the bearing, as well as accurately apply preload to the bearing and appropriately control its internal clearance. If the preload is insufficient, it will cause noise and wear, and if the preload is too high, there is a risk that the temperature of the bearing will rise, leading to seizure.

第２図は従来の高速回転モータのｌ例を示す説明図であ
って、全体構造は、前フランジ３と、ブラケット２とで
ステータＳを挾着した本体内に、ロータＲを固定したシ
ャフト１が挿入されて、シャフト１は前側ころがり軸受
Ｂ２と後側ころがり軸受Ｂ１とで支承されている。なお
Ｆは冷却用のファンである。FIG. 2 is an explanatory diagram showing an example of a conventional high-speed rotation motor, and the overall structure consists of a shaft 1 with a rotor R fixed in a main body with a stator S clamped between a front flange 3 and a bracket 2. is inserted, and the shaft 1 is supported by a front rolling bearing B2 and a rear rolling bearing B1. Note that F is a cooling fan.

そして、ころがり軸受に対する予圧の付与は、軸受外輪
９に当接している軸受箱５の端面と、センサー台４のフ
ランジ４１の内面との間にウエーブワッシャ６を挾圧し
、ウエーブワッシャから付与された設定値圧力で外輪９
をスラスト方向（シャフト軸方向〉に押圧し、ころがり
軸受の内部隙間を制御すると共に、その温度変化にもウ
エーブワッシャのバネ弾性で対抗している。A preload is applied to the rolling bearing by clamping a wave washer 6 between the end surface of the bearing box 5 that is in contact with the bearing outer ring 9 and the inner surface of the flange 41 of the sensor stand 4, and applying preload from the wave washer. Outer ring 9 at set pressure
is pressed in the thrust direction (shaft axial direction) to control the internal gap of the rolling bearing, and also counteracts temperature changes with the spring elasticity of the wave washer.

〔発明が解決しようとする課題〕[Problem to be solved by the invention]

バネによって正確な予圧を与えるには、バネの撓み量、
即ち軸受箱５と、センサー台との間隙で規定されるバネ
の使用高さを管理する必要があるが、該使用高さはモー
タ部品の長手方向の精度に依存する。モータ部品の長手
方向精度は、別々に加工された前フランジ、ケース、ブ
ラケット、センサー台等の長手方向寸法を組合せるため
に、これら部品の寸法誤差が累積される結果、所望精度
の確保が困難である。In order to apply accurate preload with a spring, the amount of deflection of the spring,
That is, it is necessary to control the working height of the spring defined by the gap between the bearing box 5 and the sensor stand, but the working height depends on the accuracy of the motor parts in the longitudinal direction. It is difficult to ensure the desired accuracy in the longitudinal direction of the motor parts because the longitudinal dimensions of the front flange, case, bracket, sensor stand, etc. that have been separately machined are combined, and dimensional errors of these parts accumulate, making it difficult to maintain the desired accuracy. It is.

従って、従来の予圧付与装置にあっては、ウエ−ブワッ
シャくバネ）のバネ使用高さ（撓み量）を正確にするた
めに、長手力向に組合せる各部品の加工精度を上げるか
、組立て時に測定して適切な使用高さになるように構或
部品の一部を削るか、或いはスペーサを入れて所定の使
用高さに設定する必要があり、予圧付与装置の設定には
非常な労力と時間とを要していた。Therefore, in the conventional preload applying device, in order to make the spring height (deflection amount) of the wave washer (spring) accurate, it is necessary to increase the processing accuracy of each component to be assembled in the longitudinal force direction, or to At times, it is necessary to measure and cut some parts of the structure to obtain the appropriate height, or insert spacers to set the height to the desired height, and setting up the preloading device takes a lot of effort. It took a lot of time.

〔課題を解決するための手段及び作用〕例えば第Ｆ図に
示す如く、ブラケット２に支持されたセンサー台４のネ
ジ孔４３内に出入自在に螺入した止めネジ８によって、
調節円板７をスラスト方向に調節自在に支承し、調節円
板７ところがり軸受との間に介装したウエ・−ブワッシ
ャ等のバネ６によって、軸受外輪９に軸受予圧Ｐを調節
自在に付与可能とした。[Means and effects for solving the problem] For example, as shown in FIG.
An adjustment disc 7 is supported in an adjustable manner in the thrust direction, and a bearing preload P is adjustably applied to the bearing outer ring 9 by a spring 6 such as a wafer washer inserted between the adjustment disc 7 and the rolling bearing. made possible.

バネ６の使用高さｈが、止めネジ８の操作による調節円
板７の調節によって自在に設定出来るため、モータ組立
時に於ける予圧付与装置の設定の際にも、各組立部材の
長手方向寸法誤差に対応して、測定に基いて適宜にバネ
使用高さを所望値に設定出来、また、モータの各種使用
回転数領域に合致したバネ使用高さ（予圧量）の設定が
可能である。また、モータを完全に分解しなくても、軸
受温度上昇等をみながら止めネジを回して最適の予圧量
にＰに再設定可能である。Since the working height h of the spring 6 can be freely set by adjusting the adjustment disc 7 by operating the setscrew 8, the longitudinal dimension of each assembly member can be adjusted even when setting the preload applying device when assembling the motor. In response to the error, it is possible to appropriately set the spring usage height to a desired value based on measurements, and it is also possible to set the spring usage height (preload amount) that matches the various usage rotation speed ranges of the motor. Further, even without completely disassembling the motor, it is possible to reset the preload amount P to the optimum amount by turning the set screw while monitoring the bearing temperature rise, etc.

〔実施例〕〔Example〕

第１図に示す如く、モータのシャフト１と、ころがり軸
受Ｂｌ　、及び軸受箱５は従来同様に構或し、軸受箱５
を内周面４０で滑動可能に支承するセンサー台４も、従
来同様に、モータブラケット２に取付けた。但しセンサ
ー台４は、内周方向に突出したフランジ４１上の同一円
上に４個のネジ孔４３を等間隔に穿設し、内周面４０は
、軸受箱端面Ｓと、フランジ内面４２との間隔が従来よ
り大な寸法ｌとした。As shown in FIG. 1, a motor shaft 1, a rolling bearing Bl, and a bearing box 5 are constructed in the same manner as before.
The sensor stand 4, which is slidably supported on the inner circumferential surface 40, is also attached to the motor bracket 2 in the same manner as in the conventional case. However, the sensor stand 4 has four screw holes 43 equally spaced on the same circle on the flange 41 protruding in the inner circumferential direction, and the inner circumferential surface 40 is connected to the bearing box end surface S and the flange inner surface 42. The distance between the two is set to a larger dimension l than before.

調整円板７は、外周に摺動用フランジ７１を有し、外径
寸法がセンサー台４の内周面４０に摺動嵌合する寸法で
、肉厚がｔ２のドーナツ型円板をアルミ軽合金で形威し
、フランジ７１外周面と円板両面とを研磨仕上げした。The adjustment disk 7 has a sliding flange 71 on its outer periphery, has an outer diameter dimension that is slidably fitted to the inner circumferential surface 40 of the sensor stand 4, and is a donut-shaped disk with a wall thickness of t2 made of light aluminum alloy. The outer peripheral surface of the flange 71 and both surfaces of the disc were polished and finished.

予圧付与装置の組付けは、軸受箱５の軸受外輪にかかっ
ているフランジ部５′の端面Ｓ上に従来品のウエーブワ
ッシャ６を載置し、該ワッシャの上に調節円板゛ｌを、
図示の如くそのフランジ７１が軸受箱側に向くように載
置した後、センサー台４を、その内周面４０が軸受箱外
周面と調節円板外周面とを支承するように嵌合し、バネ
くウエーブワッシャ）の使用高さｈ，即ち、軸受外端面
から調節円板外面までの寸法し−　（軸受７ランジ部肉
厚ｔ，十円板肉厚ｔ２）を測定し７て所定値となるよう
に、センサー台４の各ネジ孔４３中の止めネジ８を設定
した後、センザ・一・台４をブラケット２に固定した。To assemble the preload applying device, place a conventional wave washer 6 on the end surface S of the flange portion 5' that rests on the bearing outer ring of the bearing box 5, and place the adjusting disk 1 on top of the washer.
After placing the sensor stand 4 so that its flange 71 faces toward the bearing box as shown in the figure, the sensor stand 4 is fitted so that its inner circumferential surface 40 supports the outer circumferential surface of the bearing box and the outer circumferential surface of the adjustment disc, Measure the working height h of the spring wave washer), that is, the dimension from the outer end surface of the bearing to the outer surface of the adjustment disc - (thickness t of the bearing 7 flange part, thickness t2 of the tenth disc) and set it to the specified value. After setting the setscrews 8 in each screw hole 43 of the sensor stand 4 so that the sensor stand 4 was set, the sensor stand 4 was fixed to the bracket 2.

なお、図においてＡ−Ａ線は、ボール１１に対する予圧
の作用線である。Note that in the figure, the line A-A is the line of action of the preload on the ball 11.

得られた予圧付与装置にあっては、ウエーブワッシャ６
を軸受箱５と、調節円板７との間に介装した後に、寸法
測定しながら止めネジ８でバネ使用高さｈを設定出来る
ので、従来の如く、寸法誤差を測定した後、再度切削加
工することが必要でなく、またモータの長手方向を規定
する各部材（前フランジ、．ケース、ブラケット、セン
サー台）が少しの寸法バラツキを有していても、調節円
板７をスラスト・方向に摺動して、調節円板７の外面と
、センサー台の７ランジ４１の内面ヨ・．の間のギャッ
プＧを調整することによって、これら寸法誤差は支障な
く吸収出来た。In the obtained preload applying device, the wave washer 6
After installing the spring between the bearing box 5 and the adjustment disc 7, the spring height h can be set using the setscrew 8 while measuring the dimensions. Even if there is no need for machining, and even if each member (front flange, case, bracket, sensor stand) that defines the longitudinal direction of the motor has slight dimensional variations, the adjustment disk 7 can be adjusted in the thrust direction. The outer surface of the adjustment disc 7 and the inner surface of the 7 flange 41 of the sensor stand are slid together. By adjusting the gap G between them, these dimensional errors could be absorbed without any problem.

また、組立てモータの使用回転数領域に合わせてバネに
よる予圧量Ｐ１即ちバネ使用高さの設定が可能となった
。Furthermore, it is now possible to set the amount of preload P1 by the spring, that is, the height at which the spring is used, in accordance with the operating speed range of the assembled motor.

また、モータを完全分解しなくても、軸受温度の上昇等
を見ながら止めネジ８を操作して最適な予圧量（バネ圧
）Ｐの付与の調整が出来たっ〔発明の効果〕 バネの撓み量の調整、即ちバネ使用高さｈの調整は、モ
ータ紹立時にも組立後にも止めネジ８によって、調節円
板をスラスト方向に調節するだけで自由に出来るため、
部品のモータ長手方向の寸法精度がそれ程必要でなく、
製作コストが合理化出来る。また、バネ予圧量Ｐが組立
て時に任意に設定出来るため、量産品を用いて使用回転
数領域に合せた各種モータが組立て可能となり、モータ
の製造が合理化出来る。In addition, without completely disassembling the motor, it was possible to adjust the application of the optimum amount of preload (spring pressure) P by operating the setscrew 8 while monitoring the rise in bearing temperature, etc. [Effect of the invention] Deflection of the spring Adjustment of the amount, that is, the spring height h, can be made freely by simply adjusting the adjustment disc in the thrust direction using the set screw 8 both when the motor is introduced and after assembly.
Dimensional accuracy of parts in the motor longitudinal direction is not required as much,
Production costs can be rationalized. Furthermore, since the spring preload amount P can be arbitrarily set at the time of assembly, it is possible to assemble various motors using mass-produced products in accordance with the operating speed range, and the manufacturing of motors can be streamlined.

また、使用過程でもモータを完全分解することなく、予
圧量Ｐの調整が容易に出来る。Furthermore, during use, the preload amount P can be easily adjusted without completely disassembling the motor.

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

第１図は、本発明を実施したころがり軸受部の断面図で
ある。 第２図は、従来の予圧付与装置を備えたモータの略示断
面図である。 １・・・モータシャフト、　　２・・・ブラケット、３
・・・前フランジ、　　　　４・・・センサー台、５・
・・軸受箱、　　　　　　６・・・ウエーブヮッシャ、
７・・・調節円板、　　　　　８・・・止めネジ、９・
・・軸受外輪、　　　　　１０・・・軸受内輪、１１・
・・ポール、　　　　　４０・・・内周面、４１・・・
フランジ、　　　　４２・・・フランジ内面、４３・・
・ネジ孔。 襖１図FIG. 1 is a sectional view of a rolling bearing part in which the present invention is implemented. FIG. 2 is a schematic cross-sectional view of a motor equipped with a conventional preload applying device. 1...Motor shaft, 2...Bracket, 3
...Front flange, 4...Sensor stand, 5.
...Bearing box, 6...Wave washer,
7... Adjustment disc, 8... Set screw, 9...
...Bearing outer ring, 10...Bearing inner ring, 11.
...Pole, 40...Inner peripheral surface, 41...
Flange, 42...Flange inner surface, 43...
・Screw hole. Fusuma 1 diagram

Claims (1)

【特許請求の範囲】 １、止めネジ（８）によって調節円板（７）をスラスト
方向に調節可能に支承し、調節円板ところがり軸受との
間に介装したバネ（６）によって、軸受外輪（９）に軸
受予圧（Ｐ）を調節自在に付与したことを特徴とするモ
ータのころがり軸受の予圧付与装置。 ２、調節円板（７）の外周に内向きの摺接用フランジ（
７１）を設けて、該円板を軸受箱（５）とセンサー台（
４）との間隙内に摺動可能に配置し、調節円板を支承す
る止めネジ（８）を、センサー台（４）のフランジ（４
１）の円周上に等間隔に穿設した複数個のネジ孔（４３
）に調節自在に螺入した請求項１に記載の予圧付与装置
。[Claims] 1. An adjustment disc (7) is supported by a set screw (8) so as to be adjustable in the thrust direction, and a spring (6) interposed between the adjustment disc and the rolling bearing supports the bearing. A preload applying device for a rolling bearing of a motor, characterized in that a bearing preload (P) is adjustably applied to an outer ring (9). 2. Attach an inward sliding flange (
71), and the disk is connected to the bearing box (5) and the sensor stand (
The setscrew (8), which is slidably arranged in the gap between the flange (4) of the sensor stand (4) and supports the adjustment disc,
1) Multiple screw holes (43
2. The preload applying device according to claim 1, wherein the preload applying device is adjustably screwed into the preload applying device.
JP1152303A 1989-06-16 1989-06-16 Prepressure imparting device for rolling bearing of motor Pending JPH0322843A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP1152303A JPH0322843A (en) 1989-06-16 1989-06-16 Prepressure imparting device for rolling bearing of motor
PCT/JP1990/000717 WO1990016108A1 (en) 1989-06-16 1990-06-01 Device for exerting pre-load on roller bearing of motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1152303A JPH0322843A (en) 1989-06-16 1989-06-16 Prepressure imparting device for rolling bearing of motor

Publications (1)

Publication Number Publication Date
JPH0322843A true JPH0322843A (en) 1991-01-31

Family

ID=15537578

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1152303A Pending JPH0322843A (en) 1989-06-16 1989-06-16 Prepressure imparting device for rolling bearing of motor

Country Status (2)

Country Link
JP (1) JPH0322843A (en)
WO (1) WO1990016108A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5801902A (en) * 1994-09-23 1998-09-01 Seagate Technology, Inc. Setting bearing preload utilizing thermal exspansion/contraction
JP2016130532A (en) * 2015-01-13 2016-07-21 Ntn株式会社 Bearing preload mechanism and shaft support device

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5767598A (en) * 1995-11-30 1998-06-16 Sanyo Electric Co., Ltd. Motor and electronic parts-mounting apparatus incorporating the motor
US5719454A (en) * 1996-05-06 1998-02-17 Carrier Corporation Spring life improvement
DE10250561A1 (en) * 2002-10-30 2004-05-13 Valeo Wischersysteme Gmbh driving device

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0193951U (en) * 1987-12-15 1989-06-21

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5801902A (en) * 1994-09-23 1998-09-01 Seagate Technology, Inc. Setting bearing preload utilizing thermal exspansion/contraction
JP2016130532A (en) * 2015-01-13 2016-07-21 Ntn株式会社 Bearing preload mechanism and shaft support device
WO2016114195A1 (en) * 2015-01-13 2016-07-21 Ntn株式会社 Bearing preload mechanism and shaft support device

Also Published As

Publication number Publication date
WO1990016108A1 (en) 1990-12-27

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