Engineering a v belt china notched belt is usually a balancing act among versatility, tensile cord support, and tension distribution. Precisely formed and spaced notches help evenly distribute tension forces as the belt bends, thereby assisting to prevent undercord cracking and extending belt lifestyle.
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 led to an often confusing selection of V-belts that are extremely application specific 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 fit into corresponding sheave grooves, providing additional surface and greater balance. As belts operate, belt tension applies a wedging power perpendicular to their tops, pressing their sidewalls against the sides of the sheave grooves, which multiplies frictional forces that allow the drive to transmit higher loads. How a V-belt fits in to the groove of the sheave while operating under pressure impacts its performance.
V-belts are manufactured from rubber or synthetic rubber stocks, so they possess the versatility to bend around the sheaves in drive systems. Fabric materials of various types may cover the share material to provide a layer of security 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 come in a number of sizes (A, B, C, D, E) and lengths, and are widely used to replace V-belts in old, existing applications.
They are accustomed to replace belts on industrial machinery manufactured in other parts of the world.
All of the V-belt types noted over are usually available from producers in “notched” or “cogged” variations. Notches reduce bending tension, permitting the belt to wrap easier around little diameter pulleys and allowing better temperature dissipation. Excessive temperature is a significant contributor to premature belt failing.
Wrapped belts have an increased resistance to oils and severe temps. They can be utilized as friction clutches during set up.
Raw edge type v-belts are better, generate less heat, enable smaller pulley diameters, boost power ratings, and offer longer life.
V-belts appear to be relatively benign and simple pieces of equipment. Just measure the top width and circumference, find another belt with the same dimensions, and slap it on the drive. There’s only one problem: that strategy is approximately as wrong as you can get.