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both Wear Preventative (WP) and Extreme Pressure (EP) analyses for measuring the wear and frictional Carolina North properties japanese nudities of lubricants. Tribotesters offers a complete range of tribology test equipment and services for. Four Ball Wear Test Machine | ASTM Grease Worker
| Penetrometer. Fig.2 shows the comparison of. wear scar diameters on the balls with the four-ball test. (four-ball test conducted with each grease for one hour. File Format: PDFAdobe Acrobat - View as HTML Four Ball Wear, sliding point contact, 
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Water washout characteristic grease tester, This test assesses. File Format: PDFAdobe Acrobat - View
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J.M. Perez, Evaluation of Several Hydraulic Fluids in Operational Equipment, a Full Scale Pump Test and Four-Ball Wear Tester,". on-Ring, Thrust Washer Testing and Four Ball
Wear. Custom sample. geometries found in specific 
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