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Troubleshooting
Synchronous Belts Systems
52
Types of Failure
(continued)
Excessive
Edge Wear
Excessive
Tooth
Wear
Uneven
Tooth
Wear
Apparent
Belt
Stretch
Cracks in
Backing
Tooth
Shear
Tensile
Failure
Excessive
Drive
Noise
Tooth
Skipping
(Ratcheting)
Belt
Tracking
Excessive
Sprocket
Wear
Excessive
Drive
Vibration
Corrective Action
Remove obstruction or
use idler to reroute belt
Redesign drive
Use tensioning gauge to
set proper tension
Use tensioning gauge to
set proper tension
Replace sprocket
Align shafts
and sprockets
Replace sprocket
Replace sprocket, never
attempt to remachine
Use harder
sprocket material
Shield drive
Check lock down bolts
on motors and shafts
Reinforce drive
structure
Moderate temperature,
especially at startup
Moderate temperature,
shield drive
Shield drive,
eliminate chemicals
Redesign drive
to increased
sprocket diameters
Redesign to reduce
wrap on backside idler
Eliminate shock loading
or redesign drive to
handle it
Increase wrap
on sprocket
Replace sprocket
Replace product, do not
crimp belt or
drop sprockets
Replace bearings or
reinforce mountings
Alignment is critical
Check sprocket balance
Check for proper belt
Legend
Primary Cause
Possible Cause
Could Cause But Not Likely