kevlar vs standard v belts

Is Kevlar v belts stronger than standard v belts? This is the #1 most asked question that we receive from our customers. Overall the Kevlar v belts are stronger and standout as the primary choice for several applications.

However, Kevlar belts are not a quick fix for machines with multiple belt failures! In the majority of cases, there is an underlying issue causing the breakage and not the belt itself. Take the time to inspect your machines pulleys, bearings, guides and tensioners thoroughly.

What is Kevlar®?

Kevlar® is a trademarked name by DuPont for a high strength synthetic fiber. The Kevlar fibers offer high tensile strengths and great resistance to extreme temperatures. You'll find Kevlar used in every day products such as clothing, tires, bulletproof vests, PPE and much more.

Kevlar® vs aramid

When shopping for Kevlar belts, you may come across a term called "aramid". What is the difference between Kevlar and aramid? Nothing. Aramid is the generic term used to describe a synthetic fiber or polymer that offers high strength. Kevlar® is a trademark for an aramid fiber.

About Kevlar v belts

The Kevlar v belts are manufactured with Kevlar® cords, which helps eliminate stretch and offers resistance to high shock loads. Another great feature is the special heavy-duty outer wrap, that has great wear resistance and perfect for clutching operations. They can also withstand drives with back-side idlers, reverse bending and twisting.

Common applications
  • Industrial Shredders
  • Lawn mowers
  • Snow throwers
  • Tillers

About standard v belts

Standard v belts are your conventional style belt that's built with polyester cords and a standard cloth wrap. This belts are great for any general duty application where loads are lows.

Common applications
  • Conveyors
  • Household appliances
  • HVAC systems
  • Agricultural equipment

Overview: Kevlar vs standard v belts

Kevlar belts will hold up better in high shock load drives that have frequent starting/stopping and multiple directional changes. Standard belts are best suited for smooth operating drives with consistent speeds and low loads.

Features Kevlar Standard
Heat Resistant
Oil Resistant
Shock Load Resistant
Clutching Applications
Backside Idlers
Reverse Bending