Engineering a notched belt is usually a balancing act between flexibility, tensile cord support, and stress distribution. Precisely shaped and spaced notches help to evenly distribute stress forces as the belt bends, thereby assisting to prevent undercord cracking and extending belt life.
Like their synchronous belt cousins, V-belts have undergone tremendous technological development since their invention by John Gates in 1917. New synthetic rubber compounds, cover materials, construction strategies, tensile cord advancements, and cross-section profiles have resulted in an often confusing array of V-belts that are highly application particular and deliver vastly different degrees of performance.
Unlike toned belts, which rely solely on friction and will track and slip off pulleys, V-belts possess sidewalls that match corresponding sheave grooves, offering additional surface and greater stability. As belts operate, belt tension applies a wedging drive perpendicular with their tops, pushing their sidewalls against the sides of the sheave grooves, which multiplies frictional forces that permit the drive to transmit higher loads. What sort of V-belt fits into the groove of the sheave while working under pressure impacts its performance.
V-belts are produced from rubber or synthetic rubber stocks, so they possess the versatility to bend around the sheaves in drive systems. Fabric materials of varied kinds may cover the stock material to supply a layer of protection and reinforcement.
V-belts are manufactured in various industry standard cross-sections, or profiles
The classical V-belt profile goes back to industry standards created in the 1930s. Belts produced with this profile can be found in several sizes (A, B, C, D, E) and lengths, and are v belt china widely used to displace V-belts in old, existing applications.
They are accustomed to replace belts on industrial machinery manufactured in other areas of the world.
All the V-belt types noted over are usually available from producers in “notched” or “cogged” variations. Notches reduce bending stress, allowing the belt to wrap easier around little diameter pulleys and allowing better temperature dissipation. Excessive heat is a significant contributor to premature belt failure.
Wrapped belts have a higher resistance to oils and severe temperature ranges. They can be used as friction clutches during start up.
Raw edge type v-belts are more efficient, generate less heat, enable smaller pulley diameters, enhance power ratings, and offer longer life.
V-belts appear to be relatively benign and 
basic devices. Just measure the best width and circumference, discover another belt with the same dimensions, and slap it on the drive. There’s only 1 problem: that strategy is approximately as wrong as possible get.