Designation:D7594−11StandardTestMethodforDeterminingFrettingWearResistanceofLubricatingGreasesUnderHighHertzianContactPressuresUsingaHigh-Frequency,Linear-Oscillation(SRV)TestMachine1ThisstandardisissuedunderthefixeddesignationD7594;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thistestmethodcoversaprocedurefordeterminingthelubricatingactionofgreasesinordertoprevent“fretting”wearunderlinearoscillationwithassociatedlowstrokesandhighHertziancontactpressuresunderhigh-frequencylinear-oscillationmotionusingtheSRVtestmachine.Byperformingadditional,nonmandatoryextreme-pressuretestsinaccordancewithTestMethodD5706,thetestgreaseshouldbeshowntobeabletowithstandaHertziancontactpressureofatleast2200MPawithoutadhesivefailure.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2A295/A295MSpecificationforHigh-CarbonAnti-FrictionBearingSteelD217TestMethodsforConePenetrationofLubricatingGreaseD4175TerminologyRelatingtoPetroleum,PetroleumProducts,andLubricantsD5706TestMethodforDeterminingExtremePressurePropertiesofLubricatingGreasesUsingaHigh-Frequency,Linear-Oscillation(SRV)TestMachineD6425TestMethodforMeasuringFrictionandWearProp-ertiesofExtremePressure(EP)LubricatingOilsUsingSRVTestMachineD7421TestMethodforDeterminingExtremePressurePropertiesofLubricatingOilsUsingHigh-Frequency,Linear-Oscillation(SRV)TestMachineE45TestMethodsforDeterminingtheInclusionContentofSteelG40TerminologyRelatingtoWearandErosion2.2DINStandards:3DIN51834-3:200...
