Engineering a notched belt is definitely a balancing act between versatility, 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 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 highly v belt china application specific and deliver vastly different degrees of performance.
Unlike flat belts, which rely solely on friction and may 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 pressure applies a wedging push 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. 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 flexibility to bend around the sheaves in drive systems. Fabric materials of various kinds may cover the stock 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 displace V-belts in older, existing applications.
They are accustomed to replace belts on commercial machinery manufactured in other parts of the world.
All of the V-belt types noted over are typically available from manufacturers in “notched” or “cogged” variations. Notches reduce bending tension, allowing the belt to wrap more easily around little diameter pulleys and enabling better warmth dissipation. Excessive temperature is a significant contributor to premature belt failure.
Wrapped belts have an increased resistance to oils and extreme temperature ranges. They can be utilized as friction clutches during start up.
Raw edge type v-belts are better, generate less heat, enable smaller pulley diameters, increase 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 approach is approximately as wrong as you can get.