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 equation normalizes the results and produces a value that can be used in the selection, application and consolidation process from typical to extreme environments. Water washout ASTM test: Imagine the test as a routine traffic light. Advantages of Using Polyurea Grease. Current technology pinpoints assessment of dropping point, consistency after shearing conditions, and change after storage at extremely high temperatures as measurements providing the most information with the least resource expenditure.

Simply put, all the grease samples were found to be compatible with one another.

Tribological Testing by 4 Ball Methods

The Best Gets Better: In the next issue, we will describe how wear scars from the various tribological tests are measured two dimensionally using optical microscopes and three dimensionally using profilometry. Determines resistance of lubricating greases to oxidation and helps determine shelf life of grease.

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.

Incompatibility can be identified from the performance or measured physical properties of two or more mixed greases. More often than ast, intermixed grease analysis shows minimal changes in grease performance, but this cannot be taken as the rule without proper assessment.

Seta-Shell Four Ball Tester-Autoload

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. The result is breakdown of grease, cold welding or galling. An incompatibility issue could be reflected in reduced lubricating performance due to the modified composition of the fluids and additives from intermixing.


The lithium complex grease, sample No. Understanding Compatibility Understanding compatibility and contamination is the first step to optimal grease performance, plant operations and return on investment. The ability of a grease to perform under extreme pressure conditions is determined by the load wear index LWI. Grease Sampling Methods Matter.


Making sense of it all–how to pull it together in a simple and understandable form The Leon-Maxwell Equation simplifies the lubricant selection process. In some cases, performance properties of the mixed greases may be less than the lower performing grease, yet still meet customer specifications and requirements. However, a true incompatibility situation may result when low-performing grease affects the performance of the higher performing grease, meaning another grease with more desirable intermixing attributes should be considered.

How do you know what grease will work best at protecting your equipment? Determines resistance of a lubricating grease to washout by water Result values and what they mean: Current Issue Archive Advertise.

The purpose of this testing is to determine the load carrying capabilities of a lubricating grease under high load applications. The answers are in a few ASTM test methods. An overview of a recently performed aviation grease study by Anderol demonstrates the necessity of proper grease testing within the actual manufacturing environment. Click Here to see Tables 1 and 2.

Organize Your Maintenance Online! Understanding compatibility and contamination is the first step to optimal grease performance, plant operations and return on investment. Simply, compatibility results when the performance properties of the mixed greases are equal or better than the lower performing grease. A graphic representation showing the dramatic difference in load-carrying capability between two grease samples sample No.

Result values and what they mean: It is best to both increase the frequency and reduce the volume. It was found that all three greases showed good mechanical shear stability, antiwear performance and extreme pressure characteristics consistent with the specifications to which each individual grease was designed.

Taking this precautionary measure assures reliability and performance of equipment. Three measurements go into determining the LWI. How do you know if the grease you are using is right to protect against harsh environments AND routine d2569 wear. Scar size is measured aetm a test specimen. Ideally, a supplier with an intensive research and development program is willing to perform v2596 before a lubrication change is implemented to protect machinery from failure or wear.


Results are reported in kilograms kg with a functional range from kg to kg. The equation combines several ASTM test methods and properties that best represent performance. Determines the temperature point at which grease changes from a semi-solid to a liquid.

Before implementing a new product, asrm and maintenance engineers must weigh all consequences of grease intermixing and the impact on equipment reliability, production levels and the bottom line. At the conclusion of the test, the three aetm scars are measured and the average is reported. 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.

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. Table 2 presents a selection of data points showing how low-level contamination by water and a lesser performing grease resulted in a reduction in performance of a higher performing product. What the test measures: Select greases with similar thickening systems.

The lower the number, d22596 less likely the grease will oxidize and the longer it qstm last on the shelf. Results are reported as percent change expressed in whole numbers with a functional range from 0 to percent. For study purposes, two greases sample No. Contemplating a switch of grease products, due to poor performance or process change, brings to light the critical issue of compatibility. Toggle navigation Toggle search.

The Leon-Maxwell number is an excellent method to quickly and accurately evaluate a grease protection potential and as an indication of a greases ability to be used in a wide variety of applications.