ASTM D2596 PDF
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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How do you know if the grease you are using is right to protect against harsh environments AND routine operating wear. 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. The coefficient of friction is also measured throughout the 60 minute test with the average being reported at the end of the test.
Before implementing a new product, plant and maintenance engineers must weigh all consequences of grease intermixing and the impact on equipment reliability, production levels and the bottom line.
What the test measures: The answers are in a few ASTM test methods. The 4 Ball EP test machine operates in a sliding or rolling motion. In addition, where possible the supplier should be present throughout a grease changeout to make sure the new grease runs correctly.
Understanding Compatibility Understanding compatibility and contamination is the first step to optimal grease performance, plant operations and return on investment. 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.
Shell 4-Ball Lubricant Tester | ASTM D | D | IP
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. 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.
The lithium complex grease, sample No. 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.
Maximizing Grease Performance Through Optimal Compatibility
In the last issue, we described how tribological properties of a lubricant can be measured using the SRV. The lower the number, the less likely the grease will oxidize and the longer it will last on the shelf. 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. Taking this precautionary measure assures reliability and performance of equipment.
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.
Determines the temperature point at which grease changes from a semi-solid to a liquid. Understanding compatibility and contamination is the first step to optimal grease performance, plant operations and return on investment. Ideally, a supplier with an intensive research and development program is willing to perform tests before a lubrication change is implemented to protect machinery from failure or wear.
Maintenance and engineering ast can minimize the risk associated with grease changes by doing each of the following: For a FREE grease assessment Results are reported as percentage with a functional range from 0. Advantages of Using Polyurea Grease.
These tests can be conducted concurrently or sequentially with varying ratios for example, Three measurements go into determining the LWI. The supplier should also spend time with maintenance personnel to make sure they know d596 to look for going forward.
The problems can be characterized in three main categories: Dust, fibers and abrasive particles can combine with grease and grind away metal. Relubricate frequently, taking care not to overlubricate, especially motors. Welding can be detected if any of the following are noticed:. Innovative data and testing tools aid the decision process through the analysis of two or more co-mingled greases. Scar size is measured on a test specimen. Figure 2d596 shows asm the performance of a grease can be reduced by contamination from water or a lesser performing grease.
The purpose of this testing is to determine the load carrying capabilities of a lubricating grease under high load applications.
Simply, compatibility results when the performance properties of the asttm greases are equal or better than the lower performing grease. 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. With these elements in place, companies will enjoy improved operating efficiency, increased machine life and an overall cost effectiveness.