Parts in Sliding or Rolling Contact with Another Surface

Parts in Sliding or Rolling Contact with Another Surface (Ref 1) 

If the part is in sliding or rolling contact with another engineering component then, even if it is lubricated, there is the likelihood of adhesive wear. 

Adhesive wear can occur in many engineering situations, for example, shafts, journals, pistons and rings, cams, bearings, pads gears, seals, slide- 

If the mating part is nonmetaUic, wear could still occur on the counterfacing component. If the counterface is plastic, determine whether it has any fillers that could cause abrasive wear. This would also be the case if the counterface was a ceramic. 

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