Engineering a notched belt is certainly a balancing act between versatility, tensile cord support, and tension distribution. Precisely designed and spaced notches help to evenly distribute stress forces as the belt bends, thereby helping 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 substances, cover materials, construction strategies, tensile cord advancements, and cross-section profiles have resulted in an often confusing selection of V-belts that are highly application specific and deliver vastly different degrees of performance.
Unlike smooth belts, which rely solely on friction and will track and slip off pulleys, V-belts have sidewalls that match corresponding sheave grooves, offering additional surface area and greater balance. As belts operate, belt stress applies a wedging force 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 in to the groove of the sheave while working under tension impacts its performance.
V-belts are made from rubber or synthetic rubber stocks, so they have the flexibility to bend around the sheaves in drive systems. Fabric materials of various kinds may cover the share material to supply a layer of security and reinforcement.
V-belts are manufactured in a variety of industry standard cross-sections, or profiles
The classical V-belt profile dates back to industry standards developed in the 1930s. Belts produced with this profile can be found in a number of sizes (A, B, C, D, Electronic) and lengths, and so are 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 of the V-belt types noted above are usually available from producers in “notched” or “cogged” versions. Notches reduce bending tension, allowing the belt to wrap easier around small diameter pulleys and permitting better high temperature dissipation. Excessive warmth is a significant contributor to premature belt failing.

Wrapped belts have a higher resistance to oils and severe temperature ranges. They can be utilized as friction clutches during set up.
Raw edge type v-belts are better, generate less heat, allow for smaller pulley diameters, boost power ratings, and offer longer life.
V-belts look like relatively benign and basic devices. Just measure the best width and circumference, discover another belt with the same measurements, and slap it on the drive. There’s only 1 problem: that approach is v belt china approximately as wrong as you can get.