Conveyor Belt Problem Guide

Click on the issue to reveal probable answers

BELT TRACKS OFF AT THE TAIL DRUM

1 Feed is not central on to belt
2 Pulley bearing failure
3 Transoms or drum not square
4 Tail drum is dished
5 Belt tracked the wrong side of the skirt
6 Material build up or obstruction in chute
7 Conveyor miss aligned by collision
8 Not enough tension / weight in take up

EXCESSIVE BOTTOM COVER WEAR

1 Material build up in feed area
2 Idlers seized
3 Belt slipping on drive pulley
4 Feed boot covers/ impact beds worn out

EXCESSIVE EDGE WEAR

1 Side loading
2 Belt strained on one side
3 Improper loading, spillage
4 Damage by abrasives, acid, chemicals or heat 5 Belt bowed
6 Material build up
7 Belt improperly spliced or wrong fastners

BELT COVERS SWELLING AND SPONGEY

1 Contact with oils or other chemical

BELT COVERS CRACKED HARD

1 Exposed to excessive head
2 Old belt exposed to uv light

LONGITUDINAL GROOVING OF BOTTOM COVER

1 Material trapped
2 Seized rollers
3 Worn return plough

BELT HARDENS OR CRACKS

1 Damage by abrasives, acid, chemicals or heat
2 Pulleys too small
3 Pulley lagging worn

LONGITUDINAL GROOVING OF TOP COVER

1 Worn skirts
2 Damaged cleaner
3 Return idlers seized
4 Seized snub drum

BELT DAMAGED AT IDLER JUNCTION POINT

1 Excessive gap between wing idler & centre idler
2 Belt too heavy for the trough angle
3 Transition distance too short from drum to inclined idler

PREMATURE WEAR IN TOP COVER

1 Feed boot exit too small for material to escape
2 Incorrect feed direction
3 Belts running at different speeds

Conveyor Belt Problem Guide

VULCANISED JOINT SEPARATING / DELAMINATION

1 Material build up on drums
2 Drums too small for belt type selected
3 Joint performed in adverse conditions
4 Too much tension /weight in take up
5 Issues with equipment during vulcanisation

BELT TRACKS OFF TOTAL LENGHT OF THE CONVEYOR

1 Load not fed centrally
2 Material build up or obstruction in chute
3 Transom or drum not square
4 Spillages or material build up along conveyor
5 Conveyor structure not level across

ONE SECTION OF BELT RUNS OFF BOTH CARRYING & RETURN STRAND

1 Joint or splice misaligned
2 A section of belt is bent

BELT RUNS OFF AT THE HEAD DRUM

1 Drum lagging worn
2 Drum
3 Pulley bearing failure
4 Conveyor miss aligned by collision
5 Material build up or obstruction in chute

BELT RUNS TO ONE SIDE THROUGHOUT ENTIRE LENGTH AT SPECIFIC IDLERS

1 Idlers or pulleys out-of-square
2 Improperly placed idlers
3 Material build up

BELT SLIPPING

1 Not enough tension / weight in take up
2 Drive drum lagging worn
3 Drive drum lagging full of material

BELT SLIPS ON STARTING

1 Insufficient traction between belt & pulley
2 Counterweight too light
3 Pulley lagging worn
4 Drive unbelted

EXCESSIVE BELT STRETCH

1 Incorrect carcass selected
2 Too much tension /weight in take up
3 Incorrect rubber cover selected

BELT BREAKS AT OR BEHIND FASTNERS, OR FASTNERS TEAR LOOSE

1 Belt carcass rotten
2 Pulley diameter too small
3 Wrong selection of fasteners
4 Material build up on drums
5 Too much tension

ELIMINATE ALL PROBLEMS

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