>> P.198
IdentificationNumberandSpecificationⅡ-190ExampleofanidentificationnumberThespecificationofBGseriesisindicatedbytheidentificationnumber.Indicatetheidentificationnumber,consistingofamodelcodeanddimensions.TheBGseriesiscapableofrotationandrotaryandlinearmotion.However,allowanceofvelocityforthesemotionsperformedatthesametimeisobtainedfromtheequation(1).TypicalvaluesareindicatedinTable1.DN≧Dpwn+10Sn1(1)where,DN:Allowanceofvelocity(seeTable1)n:Rotationalspeed,min-1n1:Numberofstrokesperminute,min-1S:Strokelength,mmDpw:Pitchcirclediameterofballs,mm(Dpw=Fw+Ew)2Fw:Inscribedcirclediameter,mmEw:Circumscribedcirclediameter,mmHowever,applicablewhenn1≦5000,Sn1≦50000.Table1AllowanceofvelocityLubricationconditionsDNOillubrication600000Greaselubrication3000001234BG253165Model1ModelcodePageⅡ-190Inscribedcirclediameter2Circumscribedcirclediameter3DimensionsPageⅡ-190Lengthofretainer4StrokeRotaryCage(BGseries):BGIndicatetheinscribedcirclediameterinmm.Indicatethecircumscribedcirclediameterinmm.Indicatethelengthofretainerinmm.Model1Inscribedcirclediameter2Circumscribedcirclediameter3Lengthofretainer4IdentificationNumberandSpecificationAllowanceofVelocity
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