Testing of lubricants; testing in the Shell-four-ball tester; general working principlesEssais des lubrifiants; essais dans l'appareil ,,Shell à quatre billes; bases générales de travailZusammenhang mit ?hnlichen in ausl?ndischen Normen beschriebene
DIN 51350-1:1977 history
2015DIN 51350-1:2015-03 Testing of lubricants - Testing in the four-ball tester - Part 1: General working principles
2015DIN 51350-1:2015 Testing of lubricants - Testing in the four-ball tester - Part 1: General working principles
2010DIN 51350-1:2010 Testing of lubricants - Testing in the four-ball tester - Part 1: General working principles
1977DIN 51350-1:1977 Testing of lubricants; testing in the Shell-four-ball tester, general working principles