DIN 51817 Oil Separation from Lubricating Grease Under Static Conditions
Lubricating grease should be a homogenous mixture of oil with a thickener. If a significant amount of oil separates from the thickener during storage, it may change the end use characteristics of the grease. This is an accelerated test to predict the amount of oil that will separate during storage at room temperature. It includes placing a weight on the grease to mimic pressure exerted on grease in a storage drum.
The sample is placed in a pre-weighed wire mesh cone. The cone plus sample is weighed and placed in a custom test apparatus, a weight is placed over the grease and the sample is heated (40°C) for the test time. The amount of oil that separates is determined and reported as the percent oil lost from the grease. Please specify the test time. Standard times are 168 hours (standard test) or 18 hours (accelerated test).
Sample size: 100 g
- AAR M-914 ¶ 2.4.1 – Oil Separation
- API RP 5A3-E – Oil Separation Nickel Cone, Annex E
- ASTM D1742 – Oil Separation, Storage, of Greases @ 24 hours
- ASTM D1742 – Oil Separation, Storage, of Greases @ 48 hours
- ASTM D1742 – Oil Separation, Storage, of Greases @ 96 hours
- ASTM D1742 – Oil Separation, Storage, of Greases @ 168 hours
- ASTM D6184 – Oil Separation, Wire Cone Method
- FTM 321 – Oil Separation, Wire Cone Method (FED-STD-791 Method 321.2)
- FTM-3465 – Storage Stability @12 months
- FTM-3467 – Storage Stability 6 months @ 40°C (ASTM D217 unworked and worked penetration)
- GM 9030-P – Oil Separation, General Motors Specification
- IEC 811-5-1 – Oil Separation
- IP 121 – Oil Separation, Wire Mesh Cone Static Method @ 42 hrs.
- PLTL-163 – Storage Stability, 168 hrs. @ 50°C per MIL-L-19701
- PLTL-182 – Oil Separation of Bulk Greases, 12 day test – per temp.