GMN 0250TP-2001 Front Wheel Hub Rotary Fatigue Test – Passenger Car

《GMN 0250TP-2001 Front Wheel Hub Rotary Fatigue Test – Passenger Car》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。

1、NorthAmericanTestProcedureGMN0250TPENGINEERINGSTANDARDS(Book)FrontWheelHubRotaryFatigueTest–PassengerCarandLightTruck2.3Additional.1IntroductionNote:Nothinginthespecification,however,3Resourcessupersedesapplicablelawsandregulationsunlessaspecificexemptionhas

2、beenobtained.3.1Facilities.Note:Intheeventofaconflictbetweenthe3.2Equipment.Englishandthedomesticlanguage,theEnglish3.2.1Onerotaryfatiguemachine.(Chevroletlanguageshalltakeprecedence.drawingS-21167,orequivalent).1.1Purpose.3.2.2Frontwheelhubrotaryfatiguefixt

3、ure.Thepurposeofthisspecificationistodetermine(ChevroletdrawingS-42612Sht.3).therotaryfatiguelifecharacteristicsofvarious3.2.3Sixclampingstuds,5/8in.diameter.frontwheelhubs.3.2.4OneMicrocutoffswitch.1.2Foreword.3.2.5Onesteeringknuckledesignedforuse1.3Applica

4、bility.withthehubbeingtested.Thisspecificationappliestopassengervehicles3.2.6Wheelbearingsasrequired,designedforandlighttrucks.usewiththehubbeingtested.1.4Definitions.3.2.7Samplesofallwheelassembliesreleasedforusewiththehubbeingtested.2References3.2.8Astrain

5、-gaugedwheelhub,ifmethodofNote:Onlythelatestapprovedstandardsare4.3.8.2isused.applicableunlessotherwisespecified.NOTE:Allinstrumentationistobecalibrated2.1Normative.asrequired;recordinstrumentationdetailsanddateofcalibrationonDataSheet1,unlessthe2.2GM.inform

6、ationisotherwisepreservedinthetesting2.2.1Hubfatiguelifeisdependentonthewheellaboratoryrecords.withwhichitismated.Itisimportantthathubs3.3TestVehicle/TestPiece.betestedwithallreleasedwheelstoobtainatrueevaluation.Ifthisisimpractical,itis3.3.1TestMaterial.rec

7、ommendedthatthewheelwiththehighest3.3.1.1Unlessotherwisespecified,aminimumlateralbendingstiffnessbeused,aspastof12samplesofeachwheelhubaretobestudieshaveshownthisusuallyproducesthetested.higheststressinthehub.3.3.1.1.1Sixsamplesaretobeatminimum2.2.2PerReport

8、No.PG-30788,“Maximumspecifiedcastinghardness,minimumwheelLateralAccelerationTest,“alateralaccelerationmountingfacethickness,andwithminimumof0.7gisrepresentativeofthemaximumbearingcuppressfit.cap