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: Meztigor Kegrel
Country: Zambia
Language: English (Spanish)
Genre: Life
Published (Last): 13 July 2015
Pages: 272
PDF File Size: 13.48 Mb
ePub File Size: 15.60 Mb
ISBN: 716-1-41846-836-8
Downloads: 42612
Price: Free* [*Free Regsitration Required]
Uploader: Nikolar

The higher the number, the greater the long-term protection. Simply, v2596 results when the performance properties of the mixed greases are equal or better than the lower performing grease.

Optimally, supplier testing will show low levels of contamination where performance is not affected, making the transition to a new grease product quick and easy.


The lithium complex grease, sample No. Make sure to use a valid business email address. Determines the load-carrying properties of lubricating greases by measuring scaring on a test specimen. An incompatibility issue could be reflected in reduced lubricating performance due to the astk composition of the fluids and additives from intermixing. In the last issue, we described how tribological properties of a lubricant can be measured using the SRV.

Results are reported as percentage with a functional range from 0.

Results are reported in kilograms kg with a functional range from kg to kg. Grease Sampling Methods Matter. With these elements in place, companies will enjoy improved operating efficiency, increased machine life and an overall cost effectiveness.

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. Relubricate frequently, taking care not to overlubricate, especially motors. Determines resistance of a lubricating grease to washout by water Result values and what they mean: 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.


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. adtm

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

The Best Gets Better: Understanding Compatibility Understanding compatibility and contamination is the first step to optimal grease performance, plant operations and return on investment. Determines the strenghth of the boundary film between metal surfaces that provides extended protection. The performance dilution continues when the lithium complex grease is contaminated by both s2596 lithium OH stearate grease and water.

Current technology pinpoints assessment of dropping point, consistency after shearing conditions, and astj after storage at extremely high temperatures as measurements providing the most information with the least resource expenditure. 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 testing is to determine the load carrying capabilities of a lubricating grease under high load applications.

Select greases designed for the environment in which the equipment is operating. 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.

This becomes important when maintenance teams are trying to reduce the number of greases that are being purchased.

The higher the number the greater load-carrying ability. Changes in physical properties would be reflected by a softening or hardening of grease consistency, or decreased shear stability upon mechanical working and even reduction in thermal stability identified by a reduction in dropping point.

Seta-Shell Four Ball Tester-Autoload

The supplier should also spend time with maintenance personnel to make sure they know what to look for going forward. Maintenance and engineering personnel can minimize the risk associated with grease changes by doing each of the following:. Zstm graphic representation showing the dramatic astmm in load-carrying capability between two grease samples sample No.

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.


The final determination of compatibility comes with proper testing of greases in the application for key performance properties. The better the lubricant is at preventing wear, the smaller the wear scar will be on the three stationary balls.

The purpose of this test is to determine the wear preventive characteristics of a lubricant. However, a true incompatibility situation may result when low-performing grease affects the performance of the higher performing sstm, meaning another grease with more desirable intermixing attributes should be considered. How do you know if the grease you are using is right to protect against harsh environments AND routine operating wear.

The lower the number, the less likely the grease will oxidize and the longer it will last on the shelf. 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.

If incompatibility occurs, failure would be found in any of the tests of a given specification requiring no other testing; however, a borderline compatible reading requires additional application testing for conformance to the extreme temperatures and excessive pressure conditions of a given grease application. Organize D256 Maintenance Online!

Based on this value, one can formulate greases with different levels of extreme pressure properties. Understanding compatibility and contamination is the first step to optimal grease performance, plant operations and return on investment.

Adtm, 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. Results are reported as percent change expressed in whole numbers with a functional range from 0 to percent. Innovative data and testing tools aid the decision process through the analysis of two or more co-mingled greases.

For a FREE grease assessment Imagine the test as a routine traffic light.