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However, because of the lack of required precision of the housing and the axis, the misalignment of bearings, etc., bearigs are sometimes used with the inner and outer race tilted. Misalignment of rolling beatings greatly affect their high speed performance such as bearing friction and bearing life. Experiments were conducted to determine the allowable limiting dn values and the running performance of deep-groove ball bearings(type#6220) operating at dn values ranging from 0.5×10(exp 6) to 2.25×10(exp 6) under a thrust load of 1,000 kgf. Bearing frictional torque, bearing temperature rise and contact electric resistance were measured at various tilt angles of outer race with respect to inner race. The main results obtained are as follows; 1)The limiting dn value(the dn value at which the bearing frictional torque increased suddenly.) decreases greatly with a slight tilt of the outer race in high speed ball bearings. 2)In the case of an outer ring guided cage type bearing, the lubrication of the race riding surface of the cage restrains the limiting dn value. 3)A bearing with a silver-plated retainer is allowable up to a tilt of δ=0.15mm(9×10(exp -4)rad.) at dn 2.25×10(exp 6), showing that it is effective in preventing instantaneous seizure. 4)On the other hamd, with a nonsilver-plated cage, a slight increase in the tilt of the bearing outer race causes a sudden rise in friction torque and thus leads to seizure at high speeds. 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  1. コンテンツタイプ
  2. テクニカルレポート (Technical Report)
  1. 機関資料(JAXA, former ISAS, NAL, NASDA)
  2. 旧機関資料 (JAXA, former-ISAS, NAL, NASDA)
  3. 航空宇宙技術研究所(National Aeronautical Laboratory: NAL)
  4. NAL-TR

玉軸受の高速回転性能におよぼす外輪取付誤差の影響

https://jaxa.repo.nii.ac.jp/records/45044
https://jaxa.repo.nii.ac.jp/records/45044
be5aedcd-c8d6-4acf-a00a-57a7b2dbe823
名前 / ファイル ライセンス アクション
naltr00786.pdf naltr00786.pdf (3.1 MB)
Item type テクニカルレポート / Technical Report(1)
公開日 2015-03-26
タイトル
タイトル 玉軸受の高速回転性能におよぼす外輪取付誤差の影響
言語
言語 jpn
資源タイプ
資源タイプ識別子 http://purl.org/coar/resource_type/c_18gh
資源タイプ technical report
その他のタイトル(英)
その他のタイトル Effect of Outer Race Misalignment on the High Speed Performance of Ball Bearings
著者 関, 勝美

× 関, 勝美

WEKO 472624

関, 勝美

Search repository
SEKI, Katsumi

× SEKI, Katsumi

WEKO 472625

en SEKI, Katsumi

Search repository
著者所属
航空宇宙技術研究所原動機部
著者所属(英)
en
Aeroengine Division, National Aerospace Laboratory(NAL)
出版者
出版者 航空宇宙技術研究所
出版者(英)
出版者 National Aerospace Laboratory(NAL)
書誌情報 航空宇宙技術研究所報告
en : Technical Report of National Aerospace Laboratory TR-786

巻 786, p. 32, 発行日 1983-11
抄録(英)
内容記述タイプ Other
内容記述 For rolling bearings to operate at peak performance, it is necessary to mount the inner and outer races accurately against the axis of rotation. However, because of the lack of required precision of the housing and the axis, the misalignment of bearings, etc., bearigs are sometimes used with the inner and outer race tilted. Misalignment of rolling beatings greatly affect their high speed performance such as bearing friction and bearing life. Experiments were conducted to determine the allowable limiting dn values and the running performance of deep-groove ball bearings(type#6220) operating at dn values ranging from 0.5×10(exp 6) to 2.25×10(exp 6) under a thrust load of 1,000 kgf. Bearing frictional torque, bearing temperature rise and contact electric resistance were measured at various tilt angles of outer race with respect to inner race. The main results obtained are as follows; 1)The limiting dn value(the dn value at which the bearing frictional torque increased suddenly.) decreases greatly with a slight tilt of the outer race in high speed ball bearings. 2)In the case of an outer ring guided cage type bearing, the lubrication of the race riding surface of the cage restrains the limiting dn value. 3)A bearing with a silver-plated retainer is allowable up to a tilt of δ=0.15mm(9×10(exp -4)rad.) at dn 2.25×10(exp 6), showing that it is effective in preventing instantaneous seizure. 4)On the other hamd, with a nonsilver-plated cage, a slight increase in the tilt of the bearing outer race causes a sudden rise in friction torque and thus leads to seizure at high speeds. The allowable tilt was less than δ=0.1mm(6×10(exp -4)rad.).
ISSN
収録物識別子タイプ ISSN
収録物識別子 0389-4010
資料番号
内容記述タイプ Other
内容記述 資料番号: NALTR0786000
レポート番号
内容記述タイプ Other
内容記述 レポート番号: NAL TR-786
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