Heiyi cog v belts introduce

Raw-edge (or cogged) v-belts

Raw-edge belts have cogs on the bottom section and forego the fabric wrapping on the outside of the belt, leaving the interior materials exposed on the sides. The belt, provided with a higher coefficient of friction, can now better grip the sheaves. This increased grip means that the raw-edged belt transmits more horsepower at higher speeds, as much as a 30% increase in some cases.

This increase in the transmission of horsepower has a cascading effect on the drive.

For example, in drives with multiple belts, the increased power capacity may allow the elimination of a single belt. In turn, you:

-Reduce the sheave size from 4 grooves to 3, reducing costs

-Decrease the weight of the drive

-Reduce overhung load, extending bearing life

-Whenever overhung load decreases, you put less strain on the nearest bearing. And while it may make sense to rush off and implement these changes immediately, raw-edge belts do have an increased cost compared to a wrapped belt. But in some cases, moving from wrapped to raw-edge belts can decrease application costs.

Increased power is a substantial benefit of this type of belt. There are several other benefits worth mentioning, as well. Raw-edge belts, because of the inclusion of the cogs, are better able to wrap around smaller sheaves. These belts also run cooler at higher speeds and generally have better temperature resistance.

Lastly, with the implementation of raw-edge belts, there is a potential for energy savings. Raw-edge belts run at slightly higher efficiencies than wrapped ones do. While an increase in efficiency of three to four percent does not seem like much, over a year of operation, it can add up. The Department of Energy recommends their implementation because of energy savings. They highlighted that the potential savings in a 100HP motor application could be over 16,000 kWh per year, translating to well over $1,000 annually, depending on electricity costs. This savings assumes an ideally tensioned and well-running belt drive.

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