Seta-Shell Four Ball Autoload Lubricant Tester for ASTM D, ASTM D, IP We perform grease testing by ASTM D to measure the load-carrying properties or load wear index of lubricating grease using a four ball test apparatus. This standard is issued under the fixed designation D ; the number 1 This method is under the jurisdiction of ASTM Committee D02 on Petroleum.
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Tribological Testing by 4 Ball Methods
How do you know if the grease you are using is right to protect against harsh environments AND routine operating wear. With these s2596 in place, companies will enjoy aatm operating efficiency, increased machine life and an overall cost effectiveness.
Results are reported as percentage with a functional range from 0. How do you know what grease will work best at protecting your equipment? The coefficient of friction is also measured throughout the 60 minute test with the average being reported at the end of the test.
FOUR BALL MACHINE ASTM D & ASTM D | Zeal Lubricants
Determines resistance of a lubricating grease to washout by water Result values and what they mean: Testing Overview More often than not, intermixed grease analysis shows minimal changes in grease performance, but this cannot be taken as the rule without proper assessment. Taking this precautionary measure asfm reliability and performance of equipment.
A Testing Example An overview of a recently performed aviation grease study by Anderol demonstrates the necessity of proper grease testing within the actual manufacturing environment. Select greases with similar thickening systems. Determines the temperature point at which grease changes from a semi-solid to a liquid.
ASTM D2596 – 15
Dropping point ASTM test: Oxidation stability ASTM test: The lower the mm, the more protection a grease provides. The dilution in performance is again nearly equivalent to the level of contamination, that is a 20 percent reduction in the load wear index upon 20 percent contamination.
Seven tests for selecting the right grease Seven tests for selecting the right grease Greases are used to overcome real-world problems presented by operating environments and operating conditions of mechanical equipment. Relubricate frequently, taking care not to overlubricate, especially motors.
The final determination of compatibility comes with proper testing of greases in the application for key performance properties. Current Issue Archive Advertise. In particular, the results of the load-carrying capability or four-ball extreme pressure testing illustrated the aspect of performance dilution upon contamination.
Dust, fibers and abrasive particles adtm combine with grease and grind away metal. An incompatibility issue could be reflected in reduced lubricating performance due to the modified composition of the fluids and additives from intermixing. Imagine the test as a routine traffic light. The 4 Ball EP test machine operates in a sliding or rolling motion.
Although these results do not necessarily correlate with real life applications, the method has become an industry standard in comparing EP, wear and frictional functionality. More often than not, intermixed grease analysis shows minimal changes in grease performance, but this cannot be taken as the rule without proper assessment. Results are reported in weight percent expressed in whole numbers with a functional range from 1 to percent.
The lower the number, the less likely the grease will oxidize and the longer it will last on the shelf. About the Author John Kurosky. For a FREE grease assessment The supplier should also spend time with maintenance personnel to make sure they know what to look for going forward. Advantages of Using Polyurea Grease. Determines resistance of lubricating greases to oxidation and helps determine shelf life of grease.
Maintenance and engineering personnel can minimize the risk associated with grease changes by doing each of the following: Because percent grease replacement is unlikely, some level of contamination is certain to occur, requiring the pre-implementation measurement of leftover grease with a new product before finalizing an upgrade or machinery process change. For this experiment, a low-level, 10 percent by weight, of contamination was implemented to avoid harmful degradation of the individual greases and to simulate a situation common to typical grease changeouts.
The higher the number, the greater the long-term protection.
Click Here to see Tables 1 and 2.