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FWM Project. Ball Bearing Study- Steel Balls –vs- Ceramic Balls. FWM Project- Surface. Surface Roughness: Raceway~ 3AA Ball ~ 0.1- 1.0 AA. Ball Bearing Contact Surfaces. Surfaces are ground, honed and lapped. FWM Project- Contact. Generalized Hertz Contact Case. Steel-Steel.
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FWM Project Ball Bearing Study- Steel Balls –vs- Ceramic Balls
FWM Project- Surface Surface Roughness: Raceway~ 3AA Ball ~ 0.1- 1.0 AA Ball Bearing Contact Surfaces Surfaces are ground, honed and lapped.
FWM Project- Contact Generalized Hertz Contact Case Steel-Steel Cermic-Steel
FWM Project- Friction, Wear, Contact Fatigue • Ball Bearings are referred to as “anti-friction” bearings because of the small amount of friction. • Discuss sources of friction and relative amounts (effect of lubrication) • Wear will not occur if there is proper lubrication • Discuss contact fatigue, Weibul charts and method to calculate the L10 life of ball bearings
FWM Project- Elastohydrodynamic Lubrication • Discuss the differences in the minimum film thickness required for each material (based on composite surface roughness)
FWM Project- Summary • Discuss the differences found between steel-steel and ceramic-steel contacts • Compare with industry test results • Make determinations on why the predictions do or do not match test results