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Roller Chain Troubleshooting

Roller chain troubleshooting

Problems	Possible Causes	Corrections
Noisy	Poor lubrication or no lubrication Sprockets are misaligned Excessive wear on chain or sprocket Chain size it too large	Lubricate properly Check sprocket alignment and realign Inspect and replace the chain or sprocket Check recommended chain size
Chain climbs sprocket	Too much slack Worn out teeth on sprocket Excessive overloading	Adjust or add idler Inspect and replace worn out sprockets Replace with high strength chain
Excessive wear on inner link or sprocket tooth	Misaligned sprockets	Realign sprockets
Broken Pins	High shock loads or overloading Poor lubrication	Lighten load or install heavy or super premium chain Increase lubrication
Cracked or deformed rollers and/or bushings	Build up between chain and sprocket High shock loads or overloading Poor lubrication Corrosion	Remove buildup Lighten load or install heavy or super premium chain Increase lubrication Replace with corrosive resistant chain
Stiff chain joints	Misaligned sprockets Poor lubrication Corrosion Build up in chain joints Damage to link plates	Realign sprockets Increase lubrication Replace with corrosive resistant chain Shield chain to protect from buildup Replace chain and protect from any interference
Broken/cracked link plates	High shock loads Vibration Corrosion Hydrogen embrittlement	Use larger pitch chain or reduce shock load Use idler or tensioner to reduce vibration Replace with corrosion resistant chain Protect from chemical agents
Chain is winding up on the sprocket	Sprocket distance is too far / Too much slack	Add a idler or reduce the center to center distance
Pins are turning or coming out	High shock load with poor lubrication	Replace chain & lighten shock load / Lubricate properly

Examples of potential problems

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