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1、RollingBearingsContributetotheEnvironmentRollingBearingsContributetotheEnvironmentRollingBearingsContributetotheEnvironmentJapanBearingAssociationGlobalenvironmentcommittee1.IntroductionEnvironmentalproblemstheworldover,beginningwithdepletionoftheozonelayerinthe1980s,h
2、aveleadtoglobalwarming,strippingofnaturalresources,toxicwaste,andsoon.Theprogressweenjoynowmayspellouttheultimatedemiseofourveryexistenceashumansingeneral.Globalenvironmentalissuesarerelatedtotheactivitiesofeveryindividual.Althoughnotreadilyapparent,rollingbearings,bei
3、nganessentialelementinvariousindustries,alsohaveanimpactontheenvironment.Originallydesignedtouselessenergyandsavenaturalresourcesthroughtheirentirelife,rollingbearingsareenvironmentallyfriendlyandhavelittlenegativeimpactontheenvironment.Specifically,onedistinctivefeatu
4、reofbearingsislowfriction.Thiscontributestotheuseoflessenergyofallrollingareas.Regardingbearingproduction,recycledsteelfromscrapismostlyusedfortherawmaterialofbearingsteel,andmachininggrids.Chipsattheproductionprocessarealsomeltedandrecycled.Withthesepointsinmind,wewan
5、ttodiscussandtouchonthetopicoftheenvironmentallyfriendlyaspectsofrollingbearings.2.EnergyConservationSincetheindustrialrevolution,energyconsumptionhasgrownsignificantly.Mostenergyrequirementsarefilledbytheconsumptionoffossilfuels,suchaspetroleumproducts,andcoal.Theseen
6、ergysourcesarelimited,though,andwilleventuallybedepletedinthefuture.Duringthe1970soilcrisis,attentionwasfocusedonenergyconservationmeasures,withtherealizationthatfossilfuelsarefinite.Inthelaterhalfofthe1990s,anewtheme,thereductionofcarbondioxide,wasproposedwiththeprima
7、ryfocusonglobalwarmingandwhatindustriescandotoachievefurthersavingsinenergyutilization.Rollingbearings,whichweproduce,playasignificantroleinenergyconservation.Thishasbeenourcontributionsinceancienttimes.Onceweunderstoodthebasicconcepts,weweremovingheftyobjectsofwoodors
8、toneonrollers.Welearnedthatthisrequiredmuchlesseffortthanjustsliding.Wefinallyunderstoodthatusingrollerscouldreducefr
