Item Details

Reevaluation of the Stress-Life Relation in Rolling-Element Bearings

Richard J. Parker and Erwin V. Zaretsky
Format
Book; Government Document; Online; EBook
Published
Washington, D.C. : National Aeronautics and Space Administration : [For sale by the Clearinghouse for Federal Scientific and Technical Information, Springfield, Virginia 22151], 1972.
Language
English
Variant Title
NASA TN D-6745
Series
NASA Technical Note
Summary
Four groups of 12.7 millimeter diameter vacuum-degassed AISI 52100 balls were tested, each at a maximum Hertz stress in the range of 4.5 times 10 to 9th power to 6.0 times 10 to 9th power N/m2. Tests were run in the five-ball fatigue tester at a contact angle of 30 deg and a shaft speed of 10,000 rpm. The 10 percent fatigue lives at the four stress levels indicated that fatigue life is inversely proportional to maximum Hertz stress raised to the power of 12. This result agrees with a survey of the literature which suggests that a stress-life exponent of approximately 12 is typical of vacuum-processed bearing steels rather than the exponent of 9 which has been generally accepted by the bearing industry.
Description
16 p. : ill. ; 27 cm.
Mode of access: Internet.
Notes
Includes bibliographical references (p. 15-16).
Series Statement
NASA technical note ; D-6745
Logo for No Copyright - United StatesNo Copyright - United States
Technical Details

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    a| Reevaluation of the stress-life relation in rolling-element bearings c| Richard J. Parker and Erwin V. Zaretsky.
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    a| NASA TN D-6745
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    a| Washington, D.C. : b| National Aeronautics and Space Administration : b| [For sale by the Clearinghouse for Federal Scientific and Technical Information, Springfield, Virginia 22151], c| 1972.
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    a| 16 p. : b| ill. ; c| 27 cm.
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    a| NASA technical note ; v| D-6745
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    a| Includes bibliographical references (p. 15-16).
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    a| Four groups of 12.7 millimeter diameter vacuum-degassed AISI 52100 balls were tested, each at a maximum Hertz stress in the range of 4.5 times 10 to 9th power to 6.0 times 10 to 9th power N/m2. Tests were run in the five-ball fatigue tester at a contact angle of 30 deg and a shaft speed of 10,000 rpm. The 10 percent fatigue lives at the four stress levels indicated that fatigue life is inversely proportional to maximum Hertz stress raised to the power of 12. This result agrees with a survey of the literature which suggests that a stress-life exponent of approximately 12 is typical of vacuum-processed bearing steels rather than the exponent of 9 which has been generally accepted by the bearing industry.
    538
      
      
    a| Mode of access: Internet.
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    a| Roller bearings.
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    a| Bearings (Machinery)
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    a| Zaretsky, Erwin V.
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    a| Lewis Research Center.
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    a| United States. b| National Aeronautics and Space Administration.
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    b| UIU c| UIUC d| 20141113 s| google u| uiug.30112106884346 y| 1972 r| pd q| bib

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