Problem |
|
Potential cause |
|
Solution |
|
Chain rises off sprocket
|
|
- ・Excess chain slack.
- ・Excess wear at the bases of
sprocket teeth.
- ・Excess chain extension.
- ・Foreign material stuck to the
bases of sprocket teeth.
|
|
- ・Adjust the amount of slack.
- ・Replace the sprocket.
- ・Replace the chain.
- ・Remove the foreign material
from the bases of the teeth.
|
|
Chain separates poorly from
the sprocket
|
|
- ・Sprocket misalignment.
- ・Excess chain slack.
- ・Excess wear at the bases of
sprocket teeth.
|
|
- ・Adjust alignment.
- ・Adjust the amount of slack.
- ・Replace the sprocket.
|
Wear to sides of link plates
and sprockets |
|
|
|
|
Poor chain flexure |
|
- ・Inadequate oiling.
- ・Foreign materials between pins
and bushes.
- ・Corrosion between pins and
bushes.
- ・Sprocket misalignment.
|
|
- ・Lubricate properly.
- ・Wash the chain to remove
foreign materials, then oil it.
- ・Replace with an environment
resistant chain series.
- ・Adjust alignment.
|
Abnormal noise |
|
- ・Chain is too tight or too loose.
- ・Inadequate oiling.
- ・Excess wear of sprockets and
chain.
- ・Contact with the chain case.
- ・Damaged bearings.
- ・Sprocket misalignment.
|
|
- ・Adjust slack.
- ・Lubricate properly.
- ・Replace chain and sprockets.
- ・Eliminate contact with the
case.
- ・Replace the bearings.
- ・Adjust alignment.
|
Chain vibration |
|
- ・Excess chain slack.
- ・Excess load variation.
- ・Excess chain speed leading to
pulsation.
- ・Chain flexes poorly at some
points.
- ・Sprocket wear.
|
|
- ・Adjust slack.
- ・Reduce load variation or
replace chain.
- ・Use guide stoppers to stop
chain swaying.
- ・Remove the affected points.
- ・Replace the sprockets.
|
|
Damage to pins, bushings,
rollers
Deformation of link plate
Holes |
|
- ・Inadequate oiling.
- ・Jammed foreign bodies.
- ・Corroded components.
- ・Use with greater than allowable
load.
- ・Abnormal load action.
|
|
- ・Lubricate properly.
- ・Remove foreign bodies.
- ・Replace with an environment
resistant chain series.
- ・Review chain and sprocket
selections.
- ・Eliminate the abnormal load,
and review chain and sprocket
selections.
|
Overall corrosion
Corrosive wear |
|
- ・Corrosion due to moisture,
acid or alkali.
|
|
- ・Replace with an environment
resistant chain series.
|
