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Round Belts
Flat Belts & Flat Extrudate
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Round Cord
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High Tension Belts
Pyrathane® Materials Comparison
83A - FDA Approved
92A - FDA Approved
70A - FDA Approved
88A - FDA Approved
83AUV - UV Resistant
83ASD - Static Dissipative
92AX - FDA Approved
Round Belts
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Round Belt Tension Calculator
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Pyrathane Round Belt Tension Calculator
(Provides approximate driving tension and side loading on each bearing
Enter belt cross sectional dimension in inches
Enter Pyrathane material being considered
Select from 83A, 92A, 70A, 83ASD or 83AUV
Approximate resultant tension after belt has relaxed will be LBS. when installed with standard percentages for each durometer which are: 10% of 83A, 7.5% for 92A, 15% for 70A and 12.5% for 83ASD as well as 83AUV.


Pyramid Incorporated • 522 N 9th Ave E • PO Box 200 • Newton, IA 50208-0200