Posted by VBelts4Less on 1/15/2021 to
Product Information
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
Kevlar belts should never replace a drive that requires a raw edge or cogged v belt. These belts function differently with the pulley.
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 |
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| Oil Resistant |
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| Anti-Static |
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| Shock Load Resistant |
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| Clutching Applications |
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| Backside Idlers |
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| Reverse Bending |
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