The standard establishes the general basis for the testing of greases according to DIN 51818 NLGI classes 1 through 4 on the FAG roller bearing grease testing apparatus FE9.
DIN 51821-1:1988 history
2016DIN 51821-1:2016-07 Testing of lubricants - Test using the FAG roller bearing grease testing apparatus FE9 - Part 1: General working principles
2016DIN 51821-1:2016 Testing of lubricants - Test using the FAG roller bearing grease testing apparatus FE9 - Part 1: General working principles
1988DIN 51821-1:1988 Testing of lubricants; test using the FAG roller bearing grease testing apparatus FE9; general working principles