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  • 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 scraper
    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
  • 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 LENGTH OF THE CONVEYOR

    1 Load not fed centrally
    2 Material build up or obstruction in chute
    3 Transoms or drums 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

    1 Contact QPI your belt experts