Roller Chain - Tsubaki

Roller ChainInstallation & Maintenance8. Drive System (Roller Chain and Sprockets) Troubleshooting Guide8.1 GeneralProblemPossible CausesSolutionDrive ChainChain is riding up onthe sprocket.The roller chain and sprocket do notmatch.Excessive load.Elongation of the chain due to wear orexcessively worn sprocket teeth.Replace the chain or sprocket with the correct size.Decrease the load, or increase the number of strands or sizeof the chain.Replace with new chain and sprockets.Improper installation of the sprocket orshaft.Inspect and correct.Chain casing or bearings are loose.Tighten all bolts and nuts.Unusual noises.Excessive or insufficient slack in thechain.Adjust the distance between shafts to obtain the properamount of slack.Excessively worn chain or sprocket.Replace the chain and sprocket with new chain and sprocket.Lack of or unsuitable lubrication.Provide proper lubrication according to the operatingconditions.Excessive vibrations inchain.Chain is resonating with periodicexternal force.Change the chain’s mode of vibration.1. Preventing resonance.a. To change the natural frequency of the chain.• Alter the effective tension either by applying an initialtension or adjusting the existing one.• Install a tensioner to change the chain span.• Replace the chain. Choose a different quality and springcoefficient.b. Change the vibration frequency.• Change the speed of rotation of the sprocket.• Re-evaluate the device set-up.2. Mechanically reducing the vibrations.• Install a guideshoe.• Install a selfadjustingtensioner on theslack side.Load fluctuations are excessively large.Reduce fluctuations with fluid coupling or similar technique.Span between shafts is too large.Install an idler.The chain winds ontothe sprocket(Poor separation fromthe sprocket teeth)Excessive slack in chain.Elongation of the chain due to chainwear or excessively worn sprocket teeth.Adjust the chain length or distance between shafts. Install atensioner.Replace with new chain and sprocket.A-118