ASTM D4693-2007 油脂润滑的车轮轴承的低温扭矩的标准试验方法

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【英文标准名称】:StandardTestMethodforLow-TemperatureTorqueofGrease-LubricatedWheelBearings
【原文标准名称】:油脂润滑的车轮轴承的低温扭矩的标准试验方法
【标准号】:ASTMD4693-2007
【标准状态】:现行
【国别】:
【发布日期】:2007
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:D02.G0
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:滚珠轴承;油脂;低温;润滑剂;石油产品;测试;扭矩
【英文主题词】:lowtemperaturetorque;lubricatinggrease;wheelbearinggrease
【摘要】:Thistestmethoddifferentiatesamonggreaseshavingdistinctlydifferentlow-temperaturecharacteristics.Thistestisusedforspecificationpurposesandcorrelateswithitsprecursorwhichhasbeenusedtopredicttheperformanceofgreasesinautomotivewheelbearingsinlow-temperatureservice.4Itistheresponsibilityoftheusertodeterminethecorrelationwithothertypesofservice.1.1Thistestmethodcoversthedeterminationoftheextenttowhichatestgreaseretardstherotationofaspecially-manufactured,spring-loaded,automotive-typewheelbearingassemblywhensubjectedtolowtemperatures.Torquevalues,calculatedfromrestraining-forcedeterminations,areameasureoftheviscousresistanceofthegrease.Thistestmethodwasdevelopedwithgreasesgivingtorquesoflessthan35Nmat40C.1.2si-value;1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:T22
【国际标准分类号】:75_100
【页数】:8P.;A4
【正文语种】: