Are you using the correct section "V" belt for the job belts come in sections a A, B, C and each belt has set measurements a properly fitting belt has the same angle as the pulleys and sits just above the edge of the pulleys you cannot run an A section belt in a B section pulley measure the distance across the edge of the pulley and that will be the width of the section belt you will need for example at 11mm across the pulley edges will be a belt that starts with A11---*****,the *** being the length of the belt if the measurement is 18mm across the edges it probably will be a B belt with the marking of B18***** loose tension or tensioner pulley on the wrong side of the belt will also destroy belts
A correctly tensioned vee belt running in smooth undamaged pulleys should last for hundreds of hours if not thousands.
Assuming the above requirements are met other reasons why belts fail early are: -
Contamination by fuel, oil or grease. Use in extremes of heat or cold. Use in an unsuitable environment; sharp stones or gravel chips, etc.
Use of an incorrect width or profile of belt - should be the right width and profile for the pulleys (there are several).
Incorrect pulley alignment. The pulley grooves should line up exactly and this should be checked with a straight edge. Most pulley systems are designed so the alignment can be corrected.
Answers & Comments
Are you using the correct section "V" belt for the job
belts come in sections a A, B, C and each belt has set measurements
a properly fitting belt has the same angle as the pulleys and sits just above the edge of the pulleys
you cannot run an A section belt in a B section pulley
measure the distance across the edge of the pulley and that will be the width of the section belt you will need
for example at 11mm across the pulley edges will be a belt that starts with A11---*****,the *** being the length of the belt
if the measurement is 18mm across the edges it probably will be a B belt with the marking of B18*****
loose tension or tensioner pulley on the wrong side of the belt will also destroy belts
A correctly tensioned vee belt running in smooth undamaged pulleys should last for hundreds of hours if not thousands.
Assuming the above requirements are met other reasons why belts fail early are: -
Contamination by fuel, oil or grease.
Use in extremes of heat or cold.
Use in an unsuitable environment; sharp stones or gravel chips, etc.
Use of an incorrect width or profile of belt - should be the right width and profile for the pulleys (there are several).
Incorrect pulley alignment. The pulley grooves should line up exactly and this should be checked with a straight edge. Most pulley systems are designed so the alignment can be corrected.