11.07.2015 Views

DRIVE CHAINS - Tsubaki

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Before Use For Safe UseStandard Roller Chains Lube-Free Roller Chains Heavy Duty Roller Chains Corrosion Resistant Roller Chains Specialty Roller Chains Accessories Selection Handling3.4 Lubrication systems and methods (Table 4)LubricationsystemABCDrip LubricationOil BathMethodLubrication using a Slinger DiscForced LubricationApply oil to thegaps in the pinsand inner links onthe slack side of thechain. A brush canalso be used.Stop operationbefore oiling.Using a simplecase, this methoddrips oil suppliedfrom an oil cup.The chain is runthrough oil in a leakfreecasing.Use a slinger disc attachedto a leak freecase to splash oil on thechain. The peripheral velocityof the disc shouldbe 200 m/min or higher.If the width of the chain isgreater than 125 mm, attachdiscs to both sides.The oil is circulatedin a leak-free caseand cooled by apump. When thereare n strands ofchain, n+1 oilingholes are required,targeting the gapsbetween each part.Oil with sufficient frequency (in generalabout once every 8 hours) so that the rollerchain bearings do not dry out.For one strand of chain, drip about 5 to 20drops of oil each minute. Drip more oil onhigher speed chains.If depth h from the surface of the oil to thelowest point the chain reaches is toodeep, the oil may heat up (80°C or higher)and deteriorate. The depth to which thechain descends in the oil should be about6 to 12 mm.The lowest point h reached by the slingerdisc should be about 12 to 25 mm belowthe surface of the oil. The roller chainshould not enter the oil.Approximate oiling quantity per oiling hole (L/min)NameRSSUPRSSUPRSSUPChain numberChain speed(m/min)500 800Less than 300800 1,100300 5001,100 1,400500 or moreQuantityRS60orsmaller1.02.03.0801001.52.53.51201402.53.54.5#160orlarger4.05.06.0To verify sufficient lubrication is taking place, remove the chain and inspect the connecting pins and bushes. If the contact surfaces ofthe pins or bushes show tearing or a red or dark brown color, lubrication is generally not sufficient.161

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