Tribological testing by 4 ball methods nye lubricants. Din 5504 testing of lubricants testing in the four. The user of this test method should determine to his own satisfaction whether results of this test procedure correlate with field performance or other bench test machines. Tests under high hertzian contact in pure sliding or pure rolling motion to determine load carrying and antiweld properties of a lubricant under increasing test loads. It is the only test machine proven through cooperative. The standard falex four ball wear test machine is supplied with a 12 hp motor to drive the rotating ball at 1200 rpm. We are the leading supplier of tribometers to industry and academia for wear, friction and lubrication studies for research and quality assessment. I keep running across amsoil related threads, and every so often the old 4 ball test results amsoil uses in their advertising resurfaces. The unique sample configuration of three stationary balls and one top ball makes a very stable and a repeatable contact inturn, allowing test results to be very repeatable.
Although not widely used as an engine oil test, the four ball wear test provides a means of comparing relative wearprotection properties of lubricating oils. Validity of the 4ball wear test in engine lubes bob. Dedicated grease testing and development standardized test specifications determine and verify important grease performance characteristics. Bell in 1909 to coincide with the development of the united states first fuel additive on record. The four ball ep test astm d2596 measures the ability of grease to prevent wear during pure sliding contact under extreme pressure caused by heavy loads. Astm d4172 18 standard test method for wear preventive. At least two ball holders must be provided by the visiting team d. The point contact interface is obtained by rotating a 12. A four ball tester made by the institute for t erotechnology in radom capable of concentrated contact work the worst case of sliding node work was used for the tests fig. Four ball wear tester 020001003 the falex four ball wear tester determines the relative wearpreventive properties of lubricating fluids and greases in sliding and rolling applications. The temperature gradient is strictly maintained throughout the test by the electronic system which conforms with the standards.
In the last issue, we described how tribological properties of a lubricant can be measured using the srv. The four ball ep tester is designed for testing under more severe conditions and lacks the sensitivity necessary for the four ball wear test. Twist compression and fourball test device redesign citeseerx. The following documents are referred to in the text in such a way that some or all of their content constitutes.
Comparison of lubricant properties of castor oil and. Four ball is a pairs playing format in the game of golf. The four ball tester is an excellent development and quality check instrument for developers and users of lubricating oils and greases. The standard system is suitable for the astm and ip standard test methods for four ball ep testing. Astm d2596 15 standard test method for measurement of. Controlled testing of aftermarket oil additive products for friction and wear protection. The four ball ep tester is designed for testing under more. The ball in the spindle, refer to as the rotating ball normally makes a point contact with each of the three balls in this arrangement figure 1. Evaluation of lubricating grease using the same machine is detailed in test method d2266. The cec l45a99 krl test method determines the shear stability of polymer containing lubricating oils by the fourball tester using a tapered roller bearing. Comparison testing of aftermarket oil products bell. These tests measure things like the resistance of grease to water spray, the corrosion preventive properties of grease and behavior of grease in different conditions, among other things. Determination of the welding load of consistent lubricants. It is also known as better ball and best ball, although the latter more properly describes a variation involving teams of 3 or 4 players.
A tribotester is the general name given to a machine or device used to perform tests and simulations of wear, friction and lubrication which are the subject of. The optional wear loading kit converts the autoload 4 ball tester to a manual system 198007 allowing low loadinggreater sensitivity as required by astm d2266 and astm d4172. Four ball wear test july 2009 introduction bell performance, inc. Table 1 test conditions of the various fourball standards. It is also sometimes abbreviated as 4bbb in a stroke play competition, competitors are paired and play as a team. Open library is an initiative of the internet archive, a 501c3 nonprofit, building a digital library of internet sites and other cultural artifacts in digital form. Standard test method for measurement of extremepressure properties of lubricating grease four ball method. The four ball wear tester can be used under a variety of test conditions at loads up to 490 n 50 kgf. Greased lightning hyper lube lucas oil stabilizer marvel mystery oil motorpurr oil stabilizer napa oil treatment. Four ball method see four ball wear tester d2699 research octane number of sparkignition engine fuel see ocatane analyzers d2700 motor octane number of sparkignition. Four ball tester ducom instruments the tribology company. Test name standard rust test astm d665 copper strip corrosion test astm d four ball ep test astm d2783 four ball wear test astm d4172 timken ep test astm d2782 falex ep continuous load astm d3233 fzg a8.
The falex four ball wear test machine is used to determine the relative wearpreventing properties of lubricating fluids and greases in sliding and rolling. Falex tribology product datasheet the falex four ball. High resolution digital microscope koehlers four ball microscope is a versatile device for measuring the wear scar diameter on a steel test ball. Standard test method for wear preventive characteristics. Vka 110 four ball tester four ball tester the hpm four ball tester fbt is a testing device standardized in din 51 350 part 1 and is used to determine welding and metal loads din 51 350 part 2 and 3 as well as different friction and wear characteristics of lubricants din 51 350 part 4 and 5. March 2015 testing of lubricants testing in the four ball tester part 4. Determination of welding load of consistent lubricants. Four ball weld grease d 2596 fzg gear test d 5182 51 354 334 srv 4 ind.
In addition, tester can be used for determination of rolling contact fatigue and shear stability behaviour with appropriate attachments shown in figures 3 and 4. Standard test method for wear preventive characteristics of lubricating fluid four ball method1 this standard is issued under the. Porto cima four ball pc four ball rd 1 leaderboard. Ive been curious as to the validity of that test method, in regards to engine oils, and did an internet search found out others, including mobil co. Quantifying the effects of warm mix additives using the. A tribometer is an instrument that measures tribological quantities, such as coefficient of friction, friction force, and wear volume, between two surfaces in contact.
Pdf fourball wear test for engine oil evaluation researchgate. Standard test method for measurement of extremepressure. This basically tests the oils breakdown characteristics at varying rotational speeds and temperatures. A digital temperature system controls the initial temperature set point ambient to. Marin county four ball open division ncga point event meadow club 1001 bolinas road, fairfax, california 94930 monday, july 23, 2018 36 hole better ball stroke play competition at scratch open division maximum handicap of 7. Welcome to ducom instrumentsadvanced test instruments for mechanical characterization of materialsducom makes test instruments for evaluation of all types of mechanical and tribological properties of materials. The cec l45a99 krl test method determines the shear stability of polymercontaining lubricating oils by the fourball tester using a tapered roller bearing. It was invented by the 18th century dutch scientist musschenbroek. Test is used to measure the anti wear aw and extreme pressure ep properties of grease.
Astm d2596 d2783 din 5501 5502 din 550 4 ip 239, afnor the high performance system with data acquisition is suitable for astm and ip standard test methods for four ball ep testing. This apparatus consists of the digital microscope with software mounted at an angle on an aluminum base. Wear loading kit 199400 the unique test ball loadingrelease device included with the 4 ball tester allows test. Put a time limit on ball handler to get off pass e. Pdf in this study, several procedures using the fourball wear tester have been evaluated using the astm engine reference oils. D417218 standard test method for wear preventive characteristics of lubricating fluid fourball method wear resistance fourball wear testing machines wear. This issue covers other methods for determining tribological characteristic of a lubricating grease, using two astm test methods, the 4 ball ep tester and 4 ball. Note 1it is important to distinguish between the four ball ep tester and the four ball wear tester. However, much more testing needs to be performed such as astm d4172 which is known as the four ball wear test.
Astm d2783 19 standard test method for measurement of. Falex fourball extreme pressure test machine tribology and petroleum testing equipment for more than 80 years. Quantifying the effects of warm mix additives using the asphalt lubricity test. Shell four ball ep test chuck ball rotates at 1,800 rpm weld load results measured in kg series of 10 second tests wear scar diameters measured in microns measures the greases ability to prevent metal to metal contact. This issue covers other methods for determining tribological characteristic of a lubricating grease, using two astm test methods, the 4 ball ep tester and 4 ball wear. Din 5501 testing of lubricants testing in the four ball tester part 1.
Ducom four ball tester is designed to characterize lubricants for wear preventive wp, extreme pressure ep and frictional properties. Better ball of partners regular division regular division pos. Optional accessory kits are available for four ball. A mechanical lever arm applies loads up to 50 kilograms on the ball specimen. Wind turbine lubricant tests southwest research institute. Pdf the effect of ball hardness on fourball wear test. The falex four ball wear test machine is used to determine the relative wear preventing properties of lubricating fluids and greases in sliding and rolling.
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