AMERICANNATIONALSTANDARDBallScrewsANSI85.48-1977SECRETARIATSOCIETYOFAUTOMOTIVEENGINEERSSOCIETYOFMANUFACTURINGENGINEERSNATIONALMACHINETOOLBUILDERS'ASSOCIATIONTHEAMERICANSOCIETYOFMECHANICALENGINEERSPUBLISHEDBYTHEAMERICANSOCIETYOFMECHANICALENGINEERSUnitedEngineeringCenter345East47thStreetNewYork,N.Y.10017REAFFIRMED2013FORCURRENTCOMMITTEEPERSONNELPLEASEE-MAILCS@asme.orgNopartofthisdocumentmaybereproducedinanyform,inanelectronicretrievalsystemorotherwise,withoutthepriorwrittenpermissionofthepublisher.Copyright©1977byTHEAMERICANSOCIETYOFMECHANICALENGINEERSAllRightsReservedPrintedinU.S.A.ERRATAANSIB5.48-1977BallScrewsPage13.ParagraphAl.2Symbols,change0=helixangle,degreestoread0leadangle,degrees.1Page13.ParagraphAl.3AxialAngleDeflectionEquationschange0=tan-11rBCDd0-t·1Ltorea-ann:BCDCopyright©·1979byTHEAMERICANSOCIETYOFMECHANICALENGINEERSAllRightsReservedPrintedinU.S.A.(3/79)11111111111M0089EFOREWORDInordertoobtainaconsensusopinionrelativetoproposalsforstandardizationofballscrewassemblieswithintheISO/TC39Sub-committeeWorkingGroup7,anumberofuserswithinthemachinetoolindustryandmanufacturersofballscrewswereassembled.ItwasdeterminedbythisgroupthattherewasaneedforsuchstandardizationintheUnitedStatesandapplicationwasmadetoANStandardsCommitteeB5-MachineTools,fortheorganizationofatechnicalcommitteeforthiswork.Accordingly,TC43wasorganizedandascopewasapprovedbyANStandardsCommitteeB5.ThefirstmeetingwasheldonJuly22,1971.Themembersofthecommitteerepresentedmanufacturers,usersofballscrews,andothersofgeneralinterestbalancedaccordingtoANSIrequirementsforsuchcommittees.ThisdocumentwasapprovedasanAmericanNationalStandardonApril7,1977.iiiAMERICANNATIONALSTANDARDSCOMMITTEEB5MACHINETOOLS,COMPONENTS,ELEMENTS,PERFORMANCEANDEQUIPMENT(ThefollowingistherosteroftheCommitteeatthetimeoftheapprovaloftheStandard)OFFICERSW.L.McCann,ChairmanE.A.Munschauer,Jr.,Vice-Chairman(GroupA)PaulC.Ackermann,Vice-Chairman(GroupC)C.T.Blake,Vice-Chairman(GroupBJHaroldCooper,ViceChairman(GroupD)E.J.Loeffler,Secretary...
