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Notched V-Belts feature high-temperature rating.

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Notched V-Belts feature high-temperature rating.
Notched V-Belts feature high-temperature rating.
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January 13, 2014 - Made of EPDM, Raw-Edge Notched V-Belts offer expanded temperature rating of -60 to 250°F, making them suitable for rooftop blower units and commercial kitchen or industrial process exhaust systems. Belts utilize proprietary design that includes high fiber loading, multiple plies of tubular-woven knit fabric in overcords, and wide notch spacing for rigidity and stability. In addition to flexibility and heat resistance, EPDM offers resistance to decay, ozone, oxidation, and humidity.

Browning Turns up the Heat Introducing 250°F/121ºC Rating for all Raw-Edge Notched V-Belts

Emerson Power Transmission
7120 New Buffington Rd.
Florence, KY, 41042

Press release date: January 9, 2014

EPDM-formulated belts have 110ºF heat advantage over polychloroprene belts

FLORENCE, KY — Browning introduces EPDM's heat-resistance and durability advantages to all its raw-edge, notched V-belts at the AHR Expo, bringing an expanded temperature rating of -60° to 250°F (-51ºC to 121ºC) to some of the most commonly used V-belt cross sections in the HVAC industry: AX, BX, CX, 3VX, 5VX and 8VX Gripnotch belts. The EPDM formulated belts have a 110ºF (43ºC) higher heat tolerance than industry-standard polychloroprene belts, making them ideal for rooftop blower units, commercial kitchen or industrial process exhaust systems.

"These belts will set a new standard for the industry," says Don Sullivan, Marketing Manager for Browning. "Many technicians fail to account for the fact that a belt may reach 110-115°F (43-46ºC) while simply running in the sheaves at 72°F (22ºC) ambient temperature. If this heat is concentrated under a solid metal guard and the ambient temperature rises, it does not take long to approach the 140°F (60ºC) limit for common polychloroprene belts. On a rooftop in summer, even in northern climates, a V-belt drive can easily reach this critical temperature. Our EPDM formulation gives a much wider temperature window than polychloroprene – 79 percent wider. We originally introduced a limited offering of EPDM belts and due to popularity we expanded the offering to all notched belts and further developed the temperature range to 250°F (121ºC). This heat rating will be valuable in all applications and industries, but particularly in warmer climates."

EPDM (ethylene propylene diene monomer) is a synthetic rubber compound formulated for superior strength, flexibility and resistance to heat, decay, ozone, oxidation and humidity.

Sullivan emphasizes Browning's notched V-belt styles can also improve drive efficiency two to three percent over wrapped style V-belts, saving about $300 per year on a 20-hp/15-kW drive at $0.12/kWh. "U.S. Department Of Energy DOE/GO-102005-2060 makes this recommendation, because in a typical commercial application with 20 identical air handling units of this size, a 3% energy savings at $0.12/kWh is about $6,000 per year," he explains. "All these belts utilize a proprietary design that includes high fiber loading for long life, multiple plies of a unique tubular-woven knit fabric in the overcords for maximum flexibility, and wider notch spacing to increase rigidity and stability for lower stress at the cord line. They meet RMA (Rubber Manufacturers Association) standards for matched tolerances right off the shelf and are static dissipating, as well as oil and heat resistant. Coupled with the precision-ground edge for smooth, quiet operation, these raw-edge belts demonstrate how 21st century engineering and manufacturing can revolutionize a time-proven concept like the V-belt."

Browning offers free mobile apps for efficiency calculation, selection, troubleshooting and GPS locating of belt distributors. These can be accessed here.

About Emerson
Emerson (NYSE: EMR), based in St. Louis, Missouri (USA), is a global leader in bringing technology and engineering together to provide innovative solutions for customers in industrial, commercial, and consumer markets around the world.  The company is comprised of five business segments: Process Management, Industrial Automation, Network Power, Climate Technologies, and Commercial & Residential Solutions.  Sales in fiscal 2013 were $24.7 billion.  For more information, visit

About Emerson Industrial AutomationTM
Emerson Industrial Automation (, a business of Emerson, provides automation and power generation technologies and services to a wide range of industries. With its global capabilities and deep industry expertise, Emerson Industrial Automation is a trusted partner for products and solutions that increase machine performance, efficiency, reliability, and availability. Its industry-leading brands include Appleton®, ASCO®, Branson®, Browning®, Control Techniques, Kop-Flex®, Leroy-Somer®, McGill®, Morse®, Numatics®, O-Z/Gedney, Rollway®, SealMaster®, and System Plast™. 

Jackie Catalano
Corporate Manager, Global Marketing Communications
Emerson Industrial Automation
Power Transmission Solutions
Tel:  859 727 5271
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