Conveyors
Excessive Noise
Possible Causes:
- Misalignment of sprockets
- Too little or too much slack
- Inadequate lubrication
- Loose bearings
- Chain or sprocket worn out
What to do:
- Check alignment and correct
- Adjust centers for proper slack, or idler take-up
- Lubricate properly
- Draw up all bolts
- Replace chain and/or sprocket
Wear On Chain Side or Link Plate and Sides of Sprocket Teeth
Possible Cause:
- Misalignment
What to do:
- Remove chain and correct alignment of sprockets and shafts
Chain Climbs Sprockets
Possible Causes:
- Chain worn out
- Excessive chain slack
- Material build-up on sprocket tooth pockets
What to do:
- Replace the chain and sprockets
- Adjust take-up for proper slack
- Remove material build-up in sprocket tooth pockets
Chain Clings to Sprockets
Possible Causes:
- Badly worn sprockets
- Heavy or tacky lubricants
- Material build-up in driver sprocket teeth
What to do:
- Replace chain and sprockets
- Clean and lubricate
- Remove material build-up
Broken Pins, Bushings or Rollers
Possible Causes:
- Heavy shock or suddenly applied loads
- Material build-up in sprocket tooth pockets
- Inadequate lubrication
- Chain or sprocket corrosion
- Worn sprockets
What to do:
- Reduce shock loads (easy starts assure long life)
- Remove material build-up from sprocket tooth pockets
- Lubricate properly
- Protect from corrosion
- Replace sprockets
Chain Whip
Possible Causes:
- Excessive chain stack
- One or more stiff chain joints
- Worn chain
What to do:
- Adjust chain take-up or idler
- Replace stiff links
- Replace chain
Chain Gets Stiff
Possible Causes:
- Inadequate lubrication causes wear
- Corrosion
- Material build-up in chain joint
- Misalignment
What to do:
- Remove chain if dirty or corroded…clean and lubricate properly
- Protect chain from corrosion
- Clean and lubricate more often
- Check sprockets and shaft alignment
Chain Drive Runs Too Hot
Possible Causes:
- Operating in excess of recommended maximum speed
- Insufficient amount of lubrication
- Chain or shaft rubbing against and obstruction
What to do:
- Check drive for recommended speed
- Increase lubrication frequency
- Remove obstruction against which chain rubs
