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.

Author: Basho Gardalar
Country: Estonia
Language: English (Spanish)
Genre: Music
Published (Last): 22 December 2008
Pages: 206
PDF File Size: 10.12 Mb
ePub File Size: 17.26 Mb
ISBN: 509-2-24588-568-9
Downloads: 19554
Price: Free* [*Free Regsitration Required]
Uploader: Kagale

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

An incompatibility issue could be reflected in reduced lubricating performance due to the modified composition of the fluids and additives from intermixing. Understanding Compatibility Understanding compatibility and contamination is the first step to optimal grease performance, plant operations and return on investment. In addition, because equipment users usually do not have the proper resources to perform testing themselves, it is the responsibility of the grease supplier to measure grease compatibility with dropping point, penetration and high-temperature performance test machines.

Determines resistance of a lubricating grease to washout by water Result values and what they mean: More often than not, intermixed grease analysis shows minimal changes in grease performance, but this cannot be taken as the rule without proper assessment.


What the test measures: Determines the temperature point at which grease changes from a semi-solid to a liquid. The higher the d25596, the greater the long-term protection.

Select greases designed for the environment in which the equipment is operating. Oxidation satm ASTM test: The purpose of this test is to determine the wear preventive characteristics of a lubricant. 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 lower the number, the less likely the grease will oxidize and the longer it will last on the shelf. Dropping point ASTM test: Welding can be detected if any of the following are noticed:. D5296 are reported in kilograms kg with a functional range from kg to kg.


Results are reported as percentage with a functional range from atm. Taking this precautionary measure assures reliability and performance of equipment. 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.

A critical part of this assessment is working with a lubricant supplier with the specific industry know-how, and the proper testing procedures in place to ensure maximum grease compatibility and performance, promoting business success and profitability. 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.

The higher the number the greater load-carrying ability. Understanding compatibility and contamination is the first step to optimal grease performance, plant operations and return on investment.

Wear scar properties and coefficient of friction of a lubricating grease can also be determined using the 4 Ball Wear configuration. Contemplating a switch of grease products, due to poor performance or process change, brings to light the critical issue of compatibility. A graphic representation showing the dramatic difference in load-carrying capability between two grease samples sample No.

Results are reported as pressure loss expressed in pounds per square inch psi with a functional range from 0 to psi. Relubricate frequently, taking care not to overlubricate, especially motors. 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. The lower the mm, the more protection a grease provides.


Acids, caustics and cleaning solutions can break grease down and corrode metal. Force applied to a bearing or journal that exceeds the load carrying capability of the grease.

Shell 4-Ball Lubricant Tester | ASTM D | D | IP

For study purposes, two greases sample No. Grease Sampling Methods Matter. The dilution in performance is again nearly equivalent to the level of contamination, that is a 20 percent reduction in the load wear d259 upon 20 percent contamination. Generally, greases having similar thickener types will be compatible, but even greases of the same thickener systems can be deemed incompatible because of differing additive treatments and must be judged on an individual r2596.

Determines a greases ability to withstand repeated mechanical stress. Figure 2 shows how the performance of a grease can be reduced by contamination from water or a lesser performing grease.

Determines resistance of qstm greases to oxidation and helps determine shelf life of grease. Even though the study found no grease incompatibility issues, changes in grease performance were measured and documented.

Seta-Shell Four Ball Tester-Autoload

wstm Determines the load-carrying properties of lubricating greases by measuring scaring on a test specimen. Advantages of Using Polyurea Grease. Optimally, supplier testing will show low levels of contamination where performance is xstm affected, making the transition to a new grease product quick and easy. How do you know if the grease you are using is right to protect against harsh environments AND routine operating wear. The better the lubricant is at preventing wear, the smaller the wear scar will be on the three stationary balls.