Many belts are made with standard polyester cords, but V-belts made with Kevlar®or aramid tensile cords. Aramid cords offer a higher tensile strength and can handle a heavier shock load than traditional polyester tensile cords. The fibers reinforce the belt resulting in less stretch over time and less time for retensioning, saving both valuable production time and money.

The key benefits of using aramid: Long lifespan; Low weight; High efficiency; Low maintenance; Good heat stability; Long-term dimensional stability.

The main advantages of aramid over other synthetic yarns: Very high tenacity; High modulus of elasticity; Low creep Resistance to high temperatures; Good fatigue resistance; Chemical resistance.

The main advantages of aramid over steel: Low specific weight; High energy absorption; Corrosion resistance; Good dielectric behavior; Non-magnetic; Good fatigue resistance.