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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The ability of a grease to perform under extreme pressure conditions is determined by the load wear index LWI.

Tribological Testing by 4 Ball Methods

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. Based on this value, one can formulate greases with different levels of extreme pressure properties. Maintenance Services and Products. Incompatibility can be identified from the performance or measured physical properties of two or more mixed greases.

The better the lubricant is at preventing wear, the smaller the wear scar will be on the three stationary balls. An overview of a recently performed aviation grease study by Anderol demonstrates the necessity of proper grease testing within the actual manufacturing environment.

The purpose of this test is to determine the wear preventive characteristics of a lubricant. In the last issue, we described how tribological properties of a lubricant can be measured using the SRV. 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 asfm mechanical equipment.


Maintenance and engineering personnel can minimize the risk associated with grease changes by doing each of the following: The purpose of this testing is to determine the load carrying capabilities of a lubricating astn under high load applications. The supplier should also spend time with maintenance personnel to make sure they know aetm to look for going forward. 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.


The higher the number, the greater d5296 long-term protection. Current technology pinpoints assessment of dropping point, consistency after shearing conditions, and sstm after storage at extremely high temperatures as measurements providing the most information with the least resource expenditure.

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. Even though the study found no grease incompatibility issues, changes in grease performance were measured and documented. What the test measures: In this example, a recent three-test trial of intermixed lithium soap-thickened greases reveals details of compatibility when observing grease consistency, antiwear and extreme pressure along with water contamination on extreme pressure astj performance.

Understanding Compatibility Understanding compatibility and contamination is the first step to optimal grease performance, plant operations and return on investment.


Maximizing Grease Performance Through Optimal Compatibility

Dropping point ASTM test: Water washout ASTM test: These tests can be conducted concurrently or sequentially with varying ratios for example, A graphic representation showing the dramatic difference in load-carrying capability between two grease samples sample No. How do you know what grease will work best at protecting your equipment?

Relubricate frequently, taking care not to overlubricate, especially motors. This becomes important when maintenance teams are trying to reduce the number of greases that are being purchased.

Results are reported as percentage with a functional range from 0. Determines resistance of lubricating greases to oxidation and helps determine shelf life of grease.

The higher the number the greater load-carrying ability. It is best to both increase the frequency and reduce the volume. Regardless of the manufacturing industry – be it food processing, mining, power generation or aviation – plant managers and engineers need to work hand-in-hand with a supplier employing highly trained professionals with expertise in industrial lubricants and applications to ensure compatibility.

Result values and what they mean: Making sense of it all–how to atm it together in a simple and understandable form The Leon-Maxwell Equation simplifies the lubricant selection process.