Designation:D5707−11StandardTestMethodforMeasuringFrictionandWearPropertiesofLubricatingGreaseUsingaHigh-Frequency,Linear-Oscillation(SRV)TestMachine1ThisstandardisissuedunderthefixeddesignationD5707;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thistestmethodcoversaprocedurefordeterminingalubricatinggrease’scoefficientoffrictionanditsabilitytoprotectagainstwearwhensubjectedtohigh-frequency,linear-oscillationmotionusinganSRVtestmachineatatestloadof200N,frequencyof50Hz,strokeamplitudeof1.00mm,durationof2h,andtemperaturewithintherangeofthetestmachine,specifically,ambientto280°C.Othertestloads(10to1200NforSRVI-model,10to1400NforSRVII-model,and10to2000NforSRVIII-model),frequencies(5to500Hz)andstrokeamplitudes(0.1upto4.0mm)canbeused,ifspecified.Theprecisionofthistestmethodisbasedonthestatedparametersandtesttemperaturesof50and80°C.Averagewearscardimensionsonballandcoefficientoffrictionaredeter-minedandreported.NOTE1—OptimolInstrumentssuppliesanupgradekittoallowSRVI/II-machinestooperatewith1600N,ifneeded.1.2Thistestmethodcanalsobeusedfordeterminingafluidlubricant’sabilitytoprotectagainstwearanditscoefficientoffrictionundersimilartestconditions.1.3ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2A295/A295MSpecificationforHigh-CarbonAnti-FrictionBearingSteelD217TestMethodsforConePenetrationofLubricatingGreaseD4175TerminologyRelatingtoPetroleum,PetroleumProducts,andLubricantsD5706TestMethodforDeterminingExtremePressureProp...
