V-Belts - Houston Bearing and Supply
Share Embed Flag
Download ePaper

V-Belts - Houston Bearing and Supply

V-Belts - Houston Bearing and Supply V-Belts - Houston Bearing and Supply

houstonbearing.com
from houstonbearing.com More from this publisher
12.07.2015 Views

V-Belt Troubleshooting GuideCarlisle has listed some of the more common symptoms of short V-Belt life in the chart below. This chart isintended to help you identify the cause of short belt life so you can address the problem and correct it. For moreinformation on proper V-Belt maintenance, request Carlisle publication 102163 (Service Manual for Industrial V-Belt Drives) from your local Carlisle distributor.SYMPTOMSRapid Sidewall Wear • • * • • • • • • • •Worn Cover On Back *Belt Turns Over Or Jumps Off Pulley • • • * •Belt Soft, Swollen* •Belt Slips, Squeals (Spin Burn) * * • • •Belt Cover Split • •Underside Cracked • • *Tie-Band Damaged • • * *Repeated Breakage • • • •Belts Ride Too High * •Belts Bottoming * • •Repeated Take-Up Necessary • • •Belts Vibrate Excessively OrAppear MismatchedCAUSES• • • • • *Bearings Are Hot • • • * •Shafts Whip Or Bend • • • *Cracked Bushings • *Pulley Wobble • • ** Indicates Most Common Causes.• Indicates Other Possible Causes.Belts Pried On Or Misplaced SlackBelts Rubbing GuardPulleys MisalignedWorn or Damaged PulleysPulleys Too Far From BearingPoor Bearing Or Shaft ConditionInsufficient TensionExcessive TensionImproper Pulley InstallationBelts Worn (Normal Service Life)Wrong Belt Cross-Section Or TypeMismatched Belts Or Mixed BrandsMachine-Induced Impulse Or ShockImproper Or Prolonged StorageExcessive HeatExcessive Oil Or GreaseUse of Belt DressingAbrasive EnvironmentForeign Objects In GroovesExcessive MoistureOverloaded Drive-UnderbeltingDrive Seriously OverbeltedPulley Too SmallInsufficient Wrap On Small PulleyBackside Idler• •**•• •• •* *•154

Synchronous Belt Drive Troubleshooting GuideType of Failure Cause of failure Corrective Actionexcessive edge wear(exposed tensile member)jacket wear on pressure-faceside of belt toothexcessive jacket wear betweenbelt teeth (exposed tension members)cracks in neoprene backingsoftening of neoprene backingexcessive pulley tooth wear(on pressure-face and/or OD)unmounting of flangeexcessive drive noise*tooth shearapparent belt stretchcracks or premature wearat belt tooth roottensile breakreduce installation tensionand/or increase drive load-carrying capacitymisalignment ornon-rigid centersbelt flangeexcessive overloadand/orexcessive belt tightnessexcessive installation tensionexposure to excessivelow temp (below—30F)exposure to excessive heat(+200F) and/or oilexcessive overloadand/orexcessive belt tightnessinsufficient hardness ofpulley materialincorrect flange installationmisalignmentmisalignmentexcessive installation tensionexcessive loadsub-minimum pulley diameterless than 6 teeth in mesh (TIM)excessive loadreduction of center distanceor non-rigid mountingimproper pulleygroove top radiusexcessive loadsub-minimum pulley diametercheck alignment and/orreinforce mountingstraighten flangereduce installation tensionand/or increase drive loadcarrying capacityreduce installation tensioneliminate low temperaturecondition or consult factoryfor proper belt constructioneliminate high temperature andoil condition or consult factoryfor proper belt construction.surface-harden pulley oruse harder materialreinstall flange correctlycorrect alignmentcorrect alignmentreduce tensionincrease driveload-carrying capacityincrease pulley diametersincrease TIM or usenext smaller pitchincrease driveload-carrying capacityretention drive and/orreinforce mountingregroove or install new pulleysincrease load-carryingcapacity of driveincrease pulley diameters*NOTE: Effective noise reduction for power transmission drives can be accomplished by incorporating a flexiblenoise absorbing material with the protective guard. The guard design must allow a cooling air passage onthe top and bottom to prevent overheating the drive.155

Synchronous Belt Drive Troubleshooting GuideType of Failure Cause of failure Corrective Actionexcessive edge wear(exposed tensile member)jacket wear on pressure-faceside of belt toothexcessive jacket wear betweenbelt teeth (exposed tension members)cracks in neoprene backingsoftening of neoprene backingexcessive pulley tooth wear(on pressure-face <strong>and</strong>/or OD)unmounting of flangeexcessive drive noise*tooth shearapparent belt stretchcracks or premature wearat belt tooth roottensile breakreduce installation tension<strong>and</strong>/or increase drive load-carrying capacitymisalignment ornon-rigid centersbelt flangeexcessive overload<strong>and</strong>/orexcessive belt tightnessexcessive installation tensionexposure to excessivelow temp (below—30F)exposure to excessive heat(+200F) <strong>and</strong>/or oilexcessive overload<strong>and</strong>/orexcessive belt tightnessinsufficient hardness ofpulley materialincorrect flange installationmisalignmentmisalignmentexcessive installation tensionexcessive loadsub-minimum pulley diameterless than 6 teeth in mesh (TIM)excessive loadreduction of center distanceor non-rigid mountingimproper pulleygroove top radiusexcessive loadsub-minimum pulley diametercheck alignment <strong>and</strong>/orreinforce mountingstraighten flangereduce installation tension<strong>and</strong>/or increase drive loadcarrying capacityreduce installation tensioneliminate low temperaturecondition or consult factoryfor proper belt constructioneliminate high temperature <strong>and</strong>oil condition or consult factoryfor proper belt construction.surface-harden pulley oruse harder materialreinstall flange correctlycorrect alignmentcorrect alignmentreduce tensionincrease driveload-carrying capacityincrease pulley diametersincrease TIM or usenext smaller pitchincrease driveload-carrying capacityretention drive <strong>and</strong>/orreinforce mountingregroove or install new pulleysincrease load-carryingcapacity of driveincrease pulley diameters*NOTE: Effective noise reduction for power transmission drives can be accomplished by incorporating a flexiblenoise absorbing material with the protective guard. The guard design must allow a cooling air passage onthe top <strong>and</strong> bottom to prevent overheating the drive.155

logo

products

Resources

Company

Terms of service
Privacy policy
Cookie policy
Cookie settings
Imprint
Change language
Made with love in Switzerland
© 2024 Yumpu.com all rights reserved

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!