Raw edge V-Belts are also known as Cut edge Belts or simply Cut Belts. As the name signifies, the edges (sidewalls) are cut from sleeves and the sidewalls are not covered i.e. they are raw. There is no fabric wrapping on the sides as in the same of normal belts. Again Raw Edge Belt come in three basic designs. They are Raw Edge Plain (REP), Raw Edge Laminated (REL) and Raw Edge Cogged (REC).
Raw Edge Plain belt has one or two fabric layers situated above the cable cord and the bottom edge might or might not have a single fabric layer.
The efficiency of these belts has been so overwhelmingly attractive that these belts have started rapidly replacing other type of belts in the class of application for which they are suitable.
The cogged underside of the Raw Edge Cogged belt reduces bending resistance significantly, thereby enabling use of pulleys with even smaller diameters. Further the decreased bending resistance reduces mechanical losses during bending. This means improved power transmission, lesser heat buildup and also reduced working temperature. Heat dissipation is expedited as the belt has a large surface area per unit.
Special Features
Top Layer:
Specially woven poly-cotton fabric rubberised with Polychloroprene rubber which imparts ozone resistance and hence better resistance to flex crack development.
Cord:
Special adhesive treated - High Modulus - Low Stretch (HMLS) polyester cable cord provides high tensile strength with minimum stretch which in turn gives V-Belt with good tension retention, superior resistance to fatigue and shock loads.
Precision:
The edges are precisely cut and ground to exact dimensions to ensure uniform fit along the sides of the pulley grooves.
Advantages
Cogged belts offer advantages to the existing users of V-Belts wanting to replace conventional wrapped belts with cogged belts as well as to the designers of new drives.
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