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Belt splice

CharacteristicPossible problemSolution
Splice fails (rupture of reinforcement)Belt tension too highModify conveyor to reduce the belt tension (e.g. increase speed, reduce running resistance, increase friction between drive pulley and belt)



Splice fails (separation between splice steps)Old or wrong splicing materialResplice belt with correct splicing material, do not exceed maximum storage time



Rubber solution not evaporated sufficientlyResplice belt, let rubber solution evaporate well



Ambient conditions during splicing too humidResplice belt, provide rain protection, heat belt ends (max. 80°C) before final assembly



Splice opens in belt centreCompression of belt centre in transition areaIncrease transition length, elevate the pulley 1/3 of the trough depth, increase pretension



Splice opens or break at belt edgeTension at the belt edge to highIncrease transition length, elevate the pulley 1/3 of the trough depth, reduce pretension



Splice opens or breaks at the bottom sideCompression on the bottom sideIncrease pulley diameter



Fasteners pulling outWrong type of fastener or fasteners not tightRefasten belt with right fastener, retighten new fasteners after a few hours run



Tension to high Change type of fastener, decrease belt tension



Transverse breaks in the belt right behind fastenersFastener plates too long for pulley diameterUse smaller, shorter fasteners



Fasteners too bigIncrease pulley diameter



Cover strip separates from splicePressure during splice too lowReplace cover strip, increase pressure of vulcanizing press



Cover strip to thinReplace cover strip by thicker type



Joint sections of rubber covers cut too steepReplace cover strip, cut cover less steep



Joint sections not groundReplace cover strip, grind/roughen joint section



Uneven transition allowed belt cleaner to rip off cover stripAdjust belt cleaner, smoothen transition in splice section