PROBLEM PROBABLE CAUSE
Short Belt Life Spin burns from belt slipping Tension belts
on drive under stalled load
conditions or when starting
Gouges or extreme cover Eliminate obstruction or realign drive to provide
wear caused by belts on clearance
drive guard or other objects
High ambient temperature a. Use Gripnotch Belts
b. Provide ventilation
c. Shield belts
Grease or oil on belts a. Check for leaky bearings
b. Clean belts and sheaves
Worn sheaves Replace sheaves
Center distance shorter than Increase center distance by using longer belts.
recommended minimum Replace standard driven sheave with a companion
when using standard sheave sheave
as a companion sheave
Belt misalignment Realign drive with sheave set at mean pitch diameter
Belts Turn Over in Grooves Damaged cord section in Replace belts
belts. Frayed or gouged
belts.
Excessive vibration Tension belts, replace belts if damaged.
Flat idler pulley misaligned Realign idler
Worn sheaves Realign drive
Belt Squeal Excessive overload. High Tension drive or redesign and replace drive.
starting load. Belts not
tensioned properly.
Insufficient arc of contact Increase center distance or use Gripnotch Belts
Belt Breakage Foreign material in drive Provide drive guard
SOLUTION
TROUBLE SHOOTING GUIDES
VARIABLE SPEED DRIVES
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