>> P.316
GreasereplenishmentintervalMixingofdifferenttypeofgreaseThequalityofanygreasewillgraduallydeteriorateasoperatingtimepasses.Therefore,periodicreplenishmentisnecessary.Greasereplenishmentintervalvariesdependingontheoperatingconditions.Asixmonthintervalisgenerallyrecommended,andifthemachineoperationconsistsofreciprocatingmotionswithmanycyclesandlongstrokes,replenishmenteverythreemonthisrecommended.Inaddition,linearmotionrollingguidesinwhichthelubricationpart"C-Lube"isbuiltdeliverlong-termmaintenancefreeperformance.Thiseliminatestheneedforlubricationmechanismandworkloadwhichusedtobenecessaryforlinearmotionrollingguidesandsignificantlyreducesmaintenancecost.GreasereplenishmentmethodNewgreasemustbesuppliedthroughagreasefeeddevicesuchasagreasenippleuntiloldgreaseisdischarged.Aftergreaseisreplenished,running-inisperformedandexcessgreasewillbedischargedtooutsideofthelinearmotionrollingguide.Dischargedgreasemustthenberemovedbeforestartingtheoperation.Theamountofgreaserequiredforstandardreplenishmentisabout1/3to1/2ofthefreespaceinsidethelinearmotionrollingguide.Whengreaseissuppliedfromagreasenippleforthefirsttime,therewillbegreaselostinthereplenishmentpath.Theamountlostshouldbetakenintoconsideration.Generally,immediatelyaftergreaseisreplenished,frictionalresistancetendstoincrease.Ifadditionalrunning-inisperformedfor10to20reciprocatingcyclesafterexcessgreaseisdischarged,frictionalresistancebecomessmallandstable.Forapplicationswherelowfrictionalresistanceisrequired,thereplenishmentamountofgreasemaybereduced,butitmustbekepttoanappropriatelevelsoasnottogiveabadinfluenceonthelubricationperformance.Table12GreasebrandsusedinlinearmotionrollingguideMixingdifferenttypesofgreasemayresultinchangingthepropertiesofbaseoil,soapbase,oradditivesused,and,insomecases,severelydeterioratethelubricationperformanceorcausetroubleduetochemicalchangesofadditives.Oldgreaseshouldthereforeberemovedthoroughlybeforefillingwithnewgrease.Lubricationpart"C-Lube"C-Lubeisaporousresinwithmoldingformedfineresinpowder.Itisalubricationpartimpregnatedwithalargeamountoflubricationoilinitsopenporesbycapillaryinside.Lubricationoilissupplieddirectlytoballs(steelballs)orrollers(cylindricalrollers),nottothetrackrail.WhentheballsorrollershavecontactwithC-Lubebuiltintheslideunit,lubricationoilissuppliedtothesurfaceoftheballsorrollers.Astheballsorrollerscirculate,thelubricantisdistributedtotheloadingareaalongthetrackrail.Thisresultsinadequatelubricationoilbeingproperlymaintainedintheloadingareaandlubricationperformancewilllastforalongtime.ThesurfaceofC-Lubeisalwayscoveredwiththelubricationoil.LubricationoiliscontinuouslysuppliedtothesurfaceofballsorrollersbysurfacetensioninthecontactofC-Lubesurfaceandballsorrollers.OillubricationForoillubrication,heavyloadrequireshighoilviscosityandhighvelocityrequireslowoilviscosity.Generally,forlinearmotionrollingguidesoperatingunderheavyload,lubricationoilwithaviscosityofabout68mm2/sisused.Forlinearmotionrollingguidesunderlightloadathigh-speedoperation,lubricationoilwithaviscosityofabout13mm2/sisused.BrandBaseoilThickenerConsistencyAlvaniaEPGrease2[ShellLubricantsJapanK.K.]MineraloilLithiumAlvaniaGreaseS2[ShellLubricantsJapanK.K.]MULTEMPPSNo.2[KYODOYUSHICO.,LTD.]MineraloilSyntheticoil,MineraloilLithiumLithium[NIPPONTHOMPSONCO.,LTD.]SyntheticoilUreaLowDust-GenerationGreaseforCleanEnvironmentCG2LowDust-GenerationGreaseforCleanEnvironmentCGL[NIPPONTHOMPSONCO.,LTD.]KlüberalfaGRY-VAC3(1)[NOKKLUEBER]Anti-FrettingCorrosionGreaseAF26459GreaseN[NIPPONTHOMPSONCO.,LTD.]SyntheticoilUrea[ShellLubricantsJapanK.K.]MineraloilPoly-ureaSyntheticoil,MineraloilSyntheticoilLithium/CalciumEthylenetetra-fluoride284283275280225No.3285305Rangeofoperatingtemperature(2)℃Usage-20～110-25～120-50～130-40～200-30～120Generalapplicationwithextreme-pressureadditiveGeneralapplicationGeneralapplicationForcleanenvironmentLonglifeForcleanenvironmentLowsliding-20～250Forvacuum-50～170Fretting-proof-Fretting-proofNotes(1)Setreplenishmentintervalstoshort.(2)Therangesofoperatingtemperaturearequotedfromthegreasemanufacturer'scatalogedvalues,butdonotguaranteeregularuseunderhightemperatureenvironment.RemarksCheckwiththechosengreasemanufacturer'scatalogbeforeuse.Forgreaseforapplicationsotherthanthoselisted,pleasecontactIKO.1N=0.102kgf=0.2248lbs.1mm=0.03937inchⅢ-22
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