ASTM D2882 Test Method for Indicating the Wear Characteristics of Petroleum and Non-Petroleum Hydraulic Fluids in a Constant Volume Vane Pump
2. Summary of Test Method
2.1 Eleven and four-tenths litres (3 gal) of a hydraulic fluid are circulated through a rotary vane pump system for 100 h at a pump speed of 1200 +/- 60 r/min and a pump outlet pressure of 13.79 +/- 0.28 MPa (2000 +/- 40 psi). Fluid temperature at the pump inlet is 65.6 +/- 3°C (150 +/- 5°F) for all water glycols, emulsions, and other water containing fluids and for petroleum and synthetic fluids with 40°C (104°F) viscosities of 46 cSt (213 SUS) or less. A temperature of 79.4°C (175°F) is used for all other synthetic and petroleum fluids. The result obtained is the total cam ring and vane (12) weight losses during the test. The total quantity of test oil required for a run is 18.9 L (5 gal).
NOTE 2 - This test method is written for a 11.4 L (3 gal) oil charge. However, a 56.8 L (15 gal) oil charge can be used. With a 56.8 L (15 gal) fluid charge, approximately 94.6 L (25 gal) sample quantity is needed.
3. Significance and Use
3.1 This test method is an indicator of the wear characteristics of petroleum and non-petroleum hydraulic fluids operating in a constant volume vane pump. Excessive wear in vane pumps could lead to malfunction of hydraulic systems in critical applications.
