This standard specifies a method for assessing the viscosity shear stability of transmission lubricants using a tapered roller bearing testing machine. It is suitable for all types of transmission lubricants, but does not cover all safety issues. The summary of the method includes permanent viscosity loss of lubricating oil by mechanical shear stress under gearbox-like conditions and an assessment of its viscosity shear Stability. The test equipment includes a standard four-ball extreme pressure testing machine and a test head. Tapered roller bearings of type SKF32008XQ are used for testing. The test piece was cleaned with n-heptane during the test. Reference oils include CEC RL181, CEC RL209 and CEC RI210.
| Status | Active |
|---|---|
| CCS | (E34) 润滑油 | ICS | (75.100) 润滑剂、工业油及相关产品 |
| Release Date | 2011-01-09 00:00:00 | Implementation Date | 2011-05-01 00:00:00 |