| | | |
Problem | Possible Causes of Problem | Suggested Remedy |
| | | |
 Pin or Bushing Galling
| - Overload
- Inadequate lubrication
| - Proper lubrication
- Replace chain when elongation exceeds functional limits
|
| | | |
 Turned Pins | - Overload
- Inadequate lubrication
| - Replace chain as soon as possible
|
| | | |
| Excessive Noise | - Too little or too much slack
- Chain obstruction
- Loose chain guard or bearing
| - Adjust centers or take-up
- Inspect and remove obstruction
- Tighten bolts and check bearings
|
| | | |
| Chain Vibration | - Excessive chain slack
- Center distance too long
- Stiff links
| - Adjust chain tensioner
- Install idler
- Lubricate or replace chain
|
| | | |
Wear on inside of link
plate and one side of
sprocket teeth | | - Realign sprockets and shafts
- Replace chain and sprockets if necessary
|
| | | |
| Chain stiffens | - Excessive load
- Misalignment
- Inadequate lubrication
- Corrosion
| - Replace chain with one of suitable strength
- Inspect alignment
- Clean and establish correct lubrication
- Replace with corrosion resistant chain
|
| | | |
| Chain Climbs Sprockets | - Excessive chain wear
- Excessive chain slack
- Inadequate lubrication
- Sprocket tooth wear
| - Replace chain
- Install tensioner if necessary
- Replace sprocket
|
| | | |
 Fractured Plate
| | - Inspect the drive to determine the cause of high load
- Redesign drive using a higher capacity chain
|
| | | |
 Broken Pins
| | - Inspect the drive to determine the cause of high load
- Redesign drive using a higher capacity chain
|
| | | |
 Broken Pins (center)
| - Loading is greater than pins dynamic capacity
| - Inspect the drive to determine the cause of high load
- Redesign drive using a higher capacity chain
|
| | | |
 Broken Offset Link Pins | | - One-pitch offset links are not recommended
- Redesign drive using a higher capacity chain
|
| | | |
 Fatigue Fracture | - Loading is greater than chain's dynamic capacity
| - Inspect the drive to determine the cause of high load
- Redesign drive using a higher capacity chain
|
| | | |
 Cracking | - Stress corrosion cracking
| - Protect the chain from corrosion
- Install anti-corrosive chains
|
| | | |
 Broken Rollers
| - Foreign material between chain and sprocket tooth
- Fatigue failure
| - Redesign chain speed and load
- Shield drive from foreign matter
|
| | | |
 Worn Plates
| - Bottom of plates worn due to rubbing on guides
| - Chain should be replaced when wear becomes over 5% of the plates height
|
