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Certain critical drives demand for the Belt made up of Aramid or Kevlar® Cord, in place of the polyester cords. Kevlar® is an organic polyaramidefibre,which is manufactured using complex chemical processes. It is generally used where the power transmission requirements are very critical, apart from space restrictions on the permissible installation and take up allowances
Advantages of Kevlar®/ Aramid Cord Belts
- Kevlar® cord Belt has the highest strength to weight ratio, i.e. 2 to 3 times higher than other organic fibers
- Lower elongation eliminates resetting / re-tensioning of the Kevlar® cord Belts
- Belts manufactured using Kevlar® cord offers reduced belt thickness and lower Belt weight
- Kevlar® cord Belts offers higher strength and negligible elongation
| Tensile strength and % elongation comparison : | ||||||
| Material | Tensile strength in lb/in2 | % Elongation at break | ||||
|---|---|---|---|---|---|---|
| Polyester | 162000 | 14 | ||||
| Kevlar®/Aramid | 400000 | 4 | ||||
Kevlar® cord Belts are recommended, where :
- There are restrictions on the drive-width
- The installation & take-up allowances are minimal
- Critical drives
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