Wear particle analysis from grease lubricated bearings

Conference · Sat Nov 01 04:00:00 EST 1980 · Natl. Bur. Stand. (U.S.), Spec. Publ.; (United States)

OSTI ID:6483774

Rosenlieb, W ^[1]; Maciejewski, A S

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1. SKF Industries, Inc., King of Prussia, PA

Ferrographic analysis has been shown to be useful in evaluating the wear/state condition of grease lubricated components. The major achievement was the successful application of dissolving the grease utilizing a solvent mixture and making ferrograms of equal quality as to that found in oil analysis. The types of wear particles found in used grease samples are comparative to those found in oil lubricated systems. Work is presently being performed on grease lubricated taper roller bearings, similar to the test conditions utilized in this study. The analysis of the grease samples was qualitative vs quantitative. Due to the uneven distribution of wear particulate in the grease and the relatively small amount of grease used in making the ferrograms. The primary emphasis was placed upon size distribution, morphology and elemental composition. The results of the ferrogram analysis showed a good correlation to those of the SKF personnel in terms of monitoring the wear state/condition of the bearings throughout their life. However, the on-condition monitoring of grease lubricated components in the field, is complicated by the physical location of the components and inaccessibility by maintenance personnel to remove grease samples. Where accessibility is no problem, this technique is highly recommended. As it appears presently, this analysis technique seems best suited to the examination of grease obtained from dismantled grease lubricated components or in design applications.

• OSTI ID: 6483774
• Report Number(s): CONF-7910210-
• Conference Information: Journal Name: Natl. Bur. Stand. (U.S.), Spec. Publ.; (United States) Journal Volume: 584
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
023000* -- Petroleum-- Properties & Composition
BALL BEARINGS
BEARINGS
CHEMICAL ANALYSIS
DESIGN
EQUIPMENT
GREASES
LUBRICANTS
MEASURING METHODS
WEAR