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P & V values for Grey Iron Plain Bearing

P & V values for Grey Iron Plain Bearing

P & V values for Grey Iron Plain Bearing

(OP)
Doe’s any one know of any P, V, and PV numbers for Grey Iron like those for other plain bearing materials such as those for 660 Bronze?
I am primarily interested in Class 20 or 30, but any information would be appreciated.

RE: P & V values for Grey Iron Plain Bearing

I've looked through several books and catalogs and can't get a warm fuzzy feeling about a workable number.  

A short consensus of several sources gives a value of 23,000 for nonlubricated steel on cast.  Another consensus value for perodic lubrication is 46,000.

Like a lot of materials the CI has startup problems both from the lubrication and friction standpoint.  It takes a little lubricant to get it going.
Steel on CI
Light coat of oil them wipe off, no penetration.


    PSI      f
    125   .166
    186   .300
    226   .166
    260   .300
    298   .333
    336   .349
    370   .344
    385   .347
    448   .351
    485   .353
    523   .354
    560   .356
    600   .357
    633   .358
    672   .359
    710   .367
    785   .403
    800   abraded  

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