Page 11 - Goodyear2011PTMaintenanceManual

11
V-Belt
INSTALLATION GUIDE
TensionRite® Belt Frequency Meter
Using advanced optical technology, our TensionRite® Belt
Frequency Meter provides a simple, repeatable and reliable
method for tensioning belts. It displays the natural vibration
frequency of the belt strand so you can closely monitor belt
tension. The device works with all industrial transmission belts
including V-belts, synchronous belts, banded belts and Poly-V®
belts and calculates the corresponding belt tension in either
English or SI units.
Defection Principle
Plunger-type gauges utilize the defection principle to check the
tension of a belt drive.
The gauge defects the center of the belt span and the force of
this defection is compared to a target defection force for the
particular span. Then, one can adjust the belt tension until
the actual defection force equals the target.
Compare the actual defection force with the values in Tables 5
and 6. A force below the target value indicates under-tension.
A force above the target indicates over-tension.
Table 5
Table 6
Measure the span length.
Mark the center of the span. At the center mark, use a tension
tester and apply a force perpendicular to the span large enough
to defect the belt 1/64" for every inch of span length (Ex: a 100"
span requires a defection of 100/64" or 1 9/16").