ROLLING BEARING AND CAGE FOR ROLLING BEARING

To provide a rolling bearing and a cage for a rolling bearing, enabling reduction of vibration, extension of the lubrication lives thereof and reduction of the manufacturing costs thereof.SOLUTION: A cage 6 has two annular bodies 10, 10 overlapping axially each other, each annular body 10 has a plur...

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Bibliographic Details
Main Authors TSUJI NAOAKI, ISHIDA HIKARI, ITO CHIHARU
Format Patent
LanguageEnglish
Japanese
Published 15.09.2022
Subjects
BEARINGS
BLASTING
ELEMENTS OR CRANKSHAFT MECHANISMS
ENGINEERING ELEMENTS AND UNITS
FLEXIBLE SHAFTS
GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS
HEATING
LIGHTING
MECHANICAL ENGINEERING
ROTARY BODIES OTHER THAN GEARING ELEMENTS
SHAFTS
THERMAL INSULATION IN GENERAL
WEAPONS
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Summary:To provide a rolling bearing and a cage for a rolling bearing, enabling reduction of vibration, extension of the lubrication lives thereof and reduction of the manufacturing costs thereof.SOLUTION: A cage 6 has two annular bodies 10, 10 overlapping axially each other, each annular body 10 has a plurality of pocket wall portions 13, and a plurality of joining plate portions 14. The cage 6 has cutout portions 13a, 13b respectively provided in the inner diameter face and the outer diameter face of the pocket wall portion 13 in such a manner that a band width W1 being the radial size of the pocket wall portion 13 is smaller than a radial size W2 of the joining plate portion 14. Out of each pocket wall portion, the radial center of the band width W1 between a deepest portion P1 of the cutout portion 13a in the inner diameter face and a deepest portion P2 of the cutout portion 13b in the outer diameter face is located near the pitch circle diameter of the ball 5. The band width W1 is 35% or smaller of a diameter BD of the ball 5, and a peripheral range L1 of each of the cutout portions 13a, 13b is 50-100% of the diameter BD of the ball 5.SELECTED DRAWING: Figure 3A 【課題】振動の低減および潤滑寿命の向上を図ると共に、製造コストの低減を図ることができる転がり軸受および転がり軸受用保持器を提供する。【解決手段】保持器６は互いに軸方向に重なる二枚の環状体１０，１０を有し、各環状体１０は、複数のポケット壁部１３と複数の結合板部１４とを有する。保持器６は、ポケット壁部１３の径方向寸法である帯幅Ｗ１が、結合板部１４の径方向寸法Ｗ２よりも小さくなるように、ポケット壁部１３の内径面および外径面に切り欠き部１３ａ，１３ｂが設けられる。各ポケット壁部のうち、内径面における切り欠き部１３ａの最深部Ｐ１と、外径面における切り欠き部１３ｂの最深部Ｐ２との間の帯幅Ｗ１の径方向中心を玉５のピッチ円径付近とする。帯幅Ｗ１を玉５の直径ＢＤの３５％以下とし、且つ各切り欠き部１３ａ，１３ｂの周方向範囲Ｌ１を玉５の直径ＢＤの５０～１００％とした。【選択図】図３Ａ
Bibliography:Application Number: JP20210035427