>> P.57
A54ABCDEFGHIJKLMISOviscositygrade(VG)Fig.25RelationshipbetweenviscosityandtemperatureoflubricatingoilTable38ConditionsofbearinguseandexamplesoflubricatingoilselectionConditions-30〜0℃0〜50℃50〜80℃80〜110℃dmnvalueLoad101522324668100150220320460680OperatingtemperatureRemarks・LubricatingoilsarebasedonJISK2211(Refrigeratingmachineoils),JISK2239(BearingOil),JISK2213(TurbineOil),andJISK2219(GearOil).・Themethodoflubricationinthesecasesismainlyoilbathlubricationorcirculatinglubrication.・Whenthetemperatureisonthehighsidewithintheoperatingtemperaturerange,oilsofhighviscosityareused.・dmnrepresentsthemeanvalueoftheboreandoutsidediameters(mm)ofthebearingmultipliedbytherotationalspeed(min-1).RefrigeratoroilBearingoilBearingoilBearingoilTurbineoilTurbineoilTurbineoilGearoilLargeSmallSmallLargeViscosityRedwood(sec)Saybolt(sec)Temperature500020001000500300200100806050405000200010005003002001005040302010542000100050030020010080605040-20020406080100120140160°C-20020406080100120160200240280320°FABCDEFGHJKLMNA:VG7B:VG10C:VG15D:VG22E:VG32F:VG46G:VG68H:VG100J:VG150K:VG220L:VG320M:VG460N:VG680CentistrokesISOviscositygrade(Viscosityindex80)1N=0.102kgf=0.2248lbs.1mm=0.03937inch
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