Alternately, you need a belt
cross section that has a smaller MPD. (Note that flat belts
have smaller MPD's than other cross sections.)
Alternately, you need to choose a smaller cross section and
more than one belt, but realize that the sum of the belts
must add up to the maximum working tension.
Select the Length Calculator and use any of the four
calculators to determine the belt cut length. The final belt
size should be expressed like this:
3/16" x 13.5" 83A
cross section x
cut length durometer.
Select the Tension Calculator and determine the maximum
tension that is needed to install the belt. If this tension
is so large that it will bend a shaft, then you need to change
the percent stretch in 3 above and re-do 4. Alternately, you
can use larger shafts on your pulleys.
If there is any doubt about your belt size, please ask
Urethane Belt to check your calculations and send you a free
sample. Make sure you install it to triple check
that the size is correct.
Your motto should be
twice, cut once"
because if you order an incorrect size, it may not be returnable,
or there may be a hefty 50% restocking charge. We do
not normally charge for returns if the belt is unused and
is a common size, but if it is uncommon, then we cannot resell
it, nor can we recycle it because we do not use regrind; so
you may end up owning an expensive paper weight.
Before making a substantial purchase, users should
test a number of prototype belts under the same conditions
in which the belt will be expected to operate.