Full definition
V-belt with transverse molded notches (cogs) on the underside that increase flexibility, reduce bending stress, and allow the belt to conform to smaller pulley diameters (up to 30% smaller than smooth belts). The cogs also improve heat dissipation by increasing surface area and ventilation. Temperature reduction of 5-15°C versus smooth belts at same speed. Available in all standard profiles (A/B/C/SPA/SPB/SPC). Per ISO 4184. Ideal for high-speed drives (>20 m/s) and compact designs. Brands: Gates Super HC, Optibelt VB, Continental CONTI-V FO. Transmits approximately 30% more power than equivalent smooth wrapped belts.