Roller Chain - Tsubaki

Roller ChainInstallation & MaintenanceDrive Chain(7) Dimensions for evaluating standard length (chain pitch ×number of links) and 1.5% elongation are shown inTable 6 below.(8) When the length of the roller chain cannot be measuredwith a vernier, a tape measure may be used; however,measurements need to be taken over as many links aspossible to reduce measuring error.(9) Lifespan of Lambda and X-Lambda roller chain. Whenchain elongation of Lambda Roller Chain reaches about0.5% it may be losing its lubricating properties. This maybe determined by the adhesion of red wear particlesbetween the plates and the occurrence of articulationstiffness. When this occurs, the life of the chain hasbeen reached.4) Inspection of twisting and side bending of the roller chain.If partial twisting or side bending of the chain occurs, thecomplete roller chain should be replaced. (Fig. 29)Standard Length and 1.5% ElongationTable 6Chain Number RS25 RS35 RS41 RS406 LinkMeasure10 LinkStandard Length1.5% ElongationStandard Length1.501.522.502.252.283.633.003.045.003.003.045.00Measure 1.5% Elongation 2.55 3.81 5.08 5.08Chain Number RS50 RS60 RS806 LinkMeasure10 LinkMeasureChain Number RS120 RS140 RS160Standard Length 9.00 10.50 12.001.5% Elongation 9.14 10.66 12.18Standard Length 15.00 17.50 20.001.5% Elongation 15.23 17.76 20.306 LinkMeasure10 LinkMeasureStandard Length1.5% ElongationStandard Length1.5% ElongationChain Number6 Link Standard LengthMeasure 1.5% Elongation3.753.816.256.34RS20015.0015.234.504.577.507.61RS24018.0018.2710 Link Standard Length 25.00 30.00Measure 1.5% Elongation 25.38 30.45All dimension in inches unless otherwise stated.6.006.0910.0010.15RS1007.507.6112.5012.69RS18013.5013.7022.5022.846.4 Inspection of lifting and shuttle traction1) This should be carried out with the same requirements as forordinary transmission shown in item 6.3.2) It is important to check the lubrication of the connecting partsbetween the roller chain and end brackets where end bracketsare installed, as well as the parts where the roller chain windsaround the sprocket. (Refer item 3.2 on page A-109)3) The parts where the roller chain bends around the sprocketshould be checked when inspecting the wear elongation ofthe roller chain.Fig. 29 Roller Chain Twisting5) End bracketsCheck for damage by deformation of the hole due to wear.If the hole is damaged or deformed, replace the end bracketimmediately. The clearance on the pinhole of the bracketaffects the life of the roller chain and should be kept to aminimum.Fig. 30 Wear on the end bracket hole6.5 StorageAvoid storing spare parts, such as a roller chain, sprockets, andend brackets in high temperature/high humidity and dustyenvironments. Also, when storing roller chain that has beenremoved, wash the roller chain and then apply lubrication. Afterthe roller chain clearances have been supplied with a sufficientamount of lubricant, wrap the chain in grease paper beforestoring away.A-116