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A belt's modulus of elasticity is a measure of the belt's tendency to increase in length with tension.
Belt moduli can vary significantly among belt manufacturers because of the different fabric types used and the various ways of processing the fabrics and building the belt carcass.
The following table shows some typical moduli for various belt constructions.
Estimated Modulus of Elasticity |
|
Type of Belt Reinforcement |
Approximate Belt Modulus (X Belt Rated Tension) |
Cotton |
50 |
Nylon |
70 |
Polyester, Rayon |
100 |
Steel Cable |
400 |
For the final design, it is recommended that the actual values be obtained from the belt manufacturer.
The modulus of elasticity is input on the Belt Tab.