CAUSE : Sprockets are not installed in flat surface

SOLUTION : Use straight edge ruler on the side of sprocket and re-align sprocket surfaces

CAUSE : Rotation is uneven

SOLUTION : Change speed of chain
Change tension of chain
Add idler or tensioner to stop vibration

CAUSE : Fluctuation of load is excessive

SOLUTION : Use torque converter or liquid coupling

CAUSE : Uneven stretching due to abrasion

SOLUTION : Immediately replace chain and lubricate sufficiently

CAUSE : Excessive overload is applied

SOLUTION : Try to reduce overload
Move up chain number to larger one

CAUSE : Lubrication is not adequate

SOLUTION : Once clean chain and lubricate correctly to operating condition

CAUSE : There is corrosion

SOLUTION : Install casing
Clean and lubricate periodically

CAUSE : Installation is not adequate

SOLUTION : Replace chain with new one
Check and align the installation of sprocket and shaft

CAUSE : Chain sag is not proper amount

SOLUTION : Align centering distance of sprocket so that it becomes most proper slack amount for chain transmission

CAUSE : Chain and sprocket have excessive abrasion

SOLUTION : Replace chain and sprocket

CAUSE : Lubrication is not sufficient

SOLUTION : Conduct proper lubrication for operating condition
Higher the viscosity of lubricant, lower the noise

CAUSE : Improper installation of sprocket or shaft

SOLUTION : Check condition of sprocket and shaft installation and correct it

CAUSE : Improper installation of chain casing or bearing

SOLUTION : Check if chain casing is touching chain and retighten bearing bolt

CAUSE : Operating condition is not sufficient

SOLUTION : Change speed of chain
Change tension of chain
Install vibration stopper (idler or tensioner)

CAUSE : Excessive over load is applied

SOLUTION : Try to reduce overload
Change chain number to larger one

CAUSE : Chain is extremely elongated with abrasion

SOLUTION : Replace chain

CAUSE : Improper sprocket

SOLUTION : Replace sprocket

CAUSE : Rotation speed and load are much higher than normally selected value

SOLUTION : Selection of chain shall be done again

CAUSE : Insufficient lubrication

SOLUTION : Lubricate to fit operating condition and environment

CAUSE : Excessive chain vibration

SOLUTION : Change tensioner or install vibration stopper so that vibration becomes minimum

CAUSE : Chain and sprocket bite foreign object

SOLUTION : Remove foreign object and install protector

CAUSE : Unexpected shock load is applied

SOLUTION : Start over chain selection
Reduce shock with installing absorber

CAUSE : Corrosion due to inferior atmosphere

SOLUTION : Install casing or periodically clean and lubricate

CAUSE : Distance between centers of sprocket is too long

SOLUTION : Shorten center distance or change intermediate idler

CAUSE : Chain sag is excessive

SOLUTION : Decrease chain sag or install tightener

CAUSE : Improper selection of chainand sprocket

SOLUTION : Change to smaller pitch chain, or larger number of sprocket teeth

CAUSE : Unexpected overload with shock is applied

SOLUTION : Start over chain selection
Soften shock with installing absorbor
Improve starting up smoothly

CAUSE : Excessive vibration

SOLUTION : Install tightener or intermediate idler to reduce vibration

CAUSE : Inertia of sub transmission side is unexpectedly too high

SOLUTION : Start over chain selection
Increase number of strands of chain, or change to larger number of chain