Ball Bearing Mechanics - NASA Technical Reports Server (NTRS)
analysis of contacts in a ball bearing. Inasmuch as the size and shape of these contact areas are highly significant to the successful operation of ball bearings, ...
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Interference-Fit Life Factors for Ball Bearings - NASA Technical
of angular-contact and deep-groove ball bearings was deter- mined for common inner-ring interference fits at the ABEC-5 tolerance level. The analysis was ...
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Arched-outer-race ball-bearing analysis considering centrifugal forces
Apr 1, 1972 ... NASA TN D-6765. 4. ... to a 150-mm-bore angular-contact ball bearing. ... A thrust load analysis of an arched-outer-race ball bearing that ...
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Effect of Hoop Stress on Ball Bearing Life Prediction - NASA
ball bearing. A life analysis was performed on both a 45- and a. 120-ram-bore, angular-contact ball bearing. The predicted fives with and without hoop stress ...
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Computer-Aided Design Analysis of 57-mm, Angular-Contact
The computer analysis showed that improved bearing performance is feasible if .... 57-mm-bore ball bearing with a d, of 103 mm and a maximum cage width of 18.7 mm, ... Shaft-Bearing. Thermal Analysis with NASA Friction Models and Cage.
[ 19880009549.pdf - Read/Download File
Rolling Bearing Life Prediction, Theory, and Application - NASA
Mar 6, 2013 ... probabilistic analysis to calculate rolling-element (ball and roller) life. .... the load- life relation for ball and roller bearings based on testing at ...
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History of Ball Bearings - NASA Technical Reports Server (NTRS)
to the early history of ball bearings and, of course, the closely related ... book records recent developments in the understanding and analysis of one important ...
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Rolling-Element Bearings - CiteSeerX
Rolling-Element. Bearings. Bernard J. Hamrock and William J. Anderson. NASA. RP. 1105 c.1 .... 3.1 Geometry of Ball Bearings . ... 8.2 Radially Loaded Ball and Roller Bearings . ..... standing and analysis of one important aspect of rolling-.
[ 19830018943.pdf - Read/Download File
Comparison of Life Theories for Rolling-Element Bearings - NASA
life relation and in the critical stress related to bearing life are discussed using stress fields obtained from three-dimensional, finite-element analysis of a ball in a ...
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Analysis of Space Station Centrifuge Rotor Bearing Systems - NASA
Jan 1, 2014 ... survival (L1 life) for the ball bearing set was estimated at 700 .... element bearing analysis software and performed fit-up analysis on all ...
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Rolling-Element Fatigue Testing and Data Analysis—A Tutorial
The NASA STI Program operates under the auspices of the Agency .... Rolling- element fatigue life analysis is based on the initiation or first evidence of fatigue spalling on a ... The database for ball and roller bearing fatigue testing is extensive.
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First Order Ball Bearing Kinematics - NASA Technical Reports
First order kinematic analysis is concerned with the relations between the sizes ... angular contact ball bearings for all possible combinations of race rotation.
[ 19840011748.pdf - Read/Download File
Optical analysis of ball bearing starvation
NASA TM X-52869. OPTICAL ANALYSIS OF BALL BEARING STARVATION by L. D. Wedeven, D. Evans, and A. Cameron. Lewis Research Center. Cleveland ...
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Reexamination of Ball-Race Conformity Effects on Ball Bearing Life
Results are published in both non-NASA channels and by NASA in ... Their analysis of ball and roller bearings did not consider the life of ... conformity combinations, the calculated life for deep-groove ball bearings can be over 40 percent less.
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Ball motion and sliding friction in an arched outer-race ball bearing
The motion of the ball and sliding friction in an arched outer-race ball bearing under thrust load is analyzed. Fatigue life evaluations were made. The analysis is ...
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Relation between Hertz Stress-Life Exponent, Ball-Race Conformity
life exponent, ball bearing type and bearing series. .... Analysis reported by Zaretsky, Poplawski, and Root  determined the effect of ball-race conformity on ball.
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ON ULTRA-HIGH-SPEED BALL BEARING - NASA Technical
bore angular-contact ball bearings at speeds to 25 000 rpm (3x106 DN) and thrust ..... Crecelius, W. J.; and Harris, T. A.: Ultra High Speed Ball Bearing Analysis.
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Probabilistic Analysis of Space Shuttle Body Flap Actuator Ball
Probabilistic Analysis of Space Shuttle Body Flap Actuator Ball Bearings ... Keywords: Weibull analysis, Life prediction, Wear, Rolling element bearings, Grease .... at NASA Marshall Space Flight Center on angular-contact ball bearings.
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Contact Ball Bearings - NASA Technical Reports Server (NTRS)
A comparison of calculated and experimental performance of high-speed ball bearings is presented in reference 14. The analysis provided a good prediction of .
[ 19840010586.pdf - Read/Download File
Effect of Internal Clearance on Load Distribution and Life of Radially
The NASA STI Program operates under the auspices of the Agency Chief ... When a ball or roller bearing is subjected to a radial load, the rolling elements .... The Stribeck analysis was for zero diametral clearance and did not include the ...
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