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COEFFICENT OF FRICTION OF DIRTY GREASE

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KJM

KJM

Mechanical
Joined
Feb 17, 2003
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Location
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Can anyone tell me what the coefficient of friction would be on a steel shaft with dirty grease? We know that without grease it is .8 and with clean grease it's .16. Any help would be appreciated.
 
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It depends how dirty!
I suspect that before any significant change could be noted in the friction coefficient damage would be caused by debris particles scoring the surface of the shaft
 
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I suspect it depends on the size(s) of the dirt. Since you already know the coefs. dry and with clean grease, can't you measure whatever dirty grease you have?
 
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