Maybe:
1. Normally, belt's are rated in N/mm units of breaking strength.
2. Fabric belt Safety Factor (SF) = 10:1 over operating tension
3. Operating tension = 80 da/cm = 80 N/mm
4. Belt Breaking Strength Rating = 80 N/mm x SF=10 = 800 N/mm
5. Fabric per ply breaking strength = EP = 200 N/mm
6. Number of plies = 800 N/mm / EP 200 N/mm = 4 plies
Lawrence Nordell
Conveyor Dynamics, Inc.
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