Tribological evaluation of refined, bleached and deodorized palm. Pdf fourball wear test for engine oil evaluation researchgate. Pdf the effect of ball hardness on fourball wear test. Pdf in this paper an automotive full synthetically lubricant is tested on a four ball machine. The unique sample configuration of three stationary balls and one top ball makes a very stable and a repeatable contact inturn, allowing test results to be very repeatable. Astm d2783 4 ball lubricant tester determines the friction properties of extreme pressure lubricating fluids.
Some considerations concerning fourball machine testing of the. Astm d2783 4 ball lubricant tester for lubricating fluids. The four ball tester is an excellent development and quality check instrument for developers and users of lubricating oils and greases. The weight percentage of surfacemodified and ball milled mwcnts is maintained as 0. The four ball ep tester is designed for testing under more. This issue covers other methods for determining tribological characteristic of a lubricating grease, using two astm test methods, the 4 ball ep tester and 4 ball wear. D259615 standard test method for measurement of extremepressure properties of lubricating grease four ball method weld point loadwear index four ball. Fourball tester article about fourball tester by the. Astm d2596 15 standard test method for measurement of. Astm d2596 4 ball lubricant tester for oil from setashell youtube. The point contact interface is obtained by rotating a 12. Pdf in this study, several procedures using the fourball wear tester have been evaluated using the astm engine reference. No attempt has been made to correlate this test with balls in rolling contact. We,magnum engineers established in the year 2001 manufacturer and supplier of four ball tester from bengaluru, karnataka, india.
The effect of ball hardness on fourball wear test results article pdf available in wear 2647. The test oils are tested for improvement in tribological properties on a fourball tester. Astm d2783 4 ball lubricant tester for lubricating fluids from seta. Figure 1 shows the schematic diagram of a four ball tribo tester. The four ball ep tester is also used with optional fixturing to perform krl shear stability tests according to cec l45a99. Standard test method for measurement of extremepressure. Astm d2596 4 ball lubricant tester determines the friction properties of extreme pressure oils and greases. Four ball testing apparatus for extreme pressure lubricants. Standard test method for measurement of extremepressure properties of lubricating grease four ball method. Performances of automotive lubricants tests on four ball.
The setashell 4 ball lubricant tester is used in tribology research laboratories and in the routine quality control of finished lubrication products. Kinetics of sample wear on fourball frictiontesting machine using. Four ball tester ducom instruments the tribology company. Determines loadwear index lwi, last nonseizure load lnsl and weld point wp. The kinetics of sample wear on a fourball frictiontesting machine using various lubricants is analyzed. The four ball wear tester can be used under a variety of test conditions at loads up to 490 n 50 kgf. During pitting tests the tribosystem figure on the right consists of the three bottom balls 2, free to rotate in the. Tribological testing by 4 ball methods nye lubricants. Palm stearin ps, fourball tribotester, paraffinic mineral oil pmo, friction coefficient doi. The fourball ep test measures a lubricants extreme pressure properties under. It is the only test machine proven through cooperative. Four ball tester exporter,four ball tester supplier. Falex fourball extreme pressure test machine bluesphere.
Optional accessory kits for four ball wear testing astm d2266 and. Get best quality four ball tester at market leading price. The test adapters are placed on a thrust bearing that permits free rotation under the influence. Astm d2783 4 ball lubricant tester for lubricating fluids from setashell duration. Note 1it is important to distinguish between the four ball ep tester and the four ball wear tester. Available in two configurations for astm and ip standard test method. In the last issue, we described how tribological properties of a lubricant can be measured using the srv.
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