The most common systems for transmitting power from a drive to a driven shaft are belt, gear, and chain drives. But V-belt drive systems, also known as friction drives (because power is certainly transmitted consequently of the belt’s adherence to the pulley) are an economical option for industrial, v belt china automotive, commercial, agricultural, and home appliance applications. V-belt drives are also simple to install, require no lubrication, and dampen shock load.
Here’s the catch: Standard friction drives can both slip and creep, leading to inexact velocity ratios or degraded timing precision between insight and output shafts. For this reason, it is important to select a belt appropriate for the application accessible.
Belt drives are among the earliest power tranny systems and were widely used during the Industrial Revolution. Then, flat belts conveyed power over large distances and were created from leather. Later, needs for more powerful machinery, and the development of large markets like the automobile sector spurred new belt designs. V-belts, with a trapezoidal or V shape, made of rubber, neoprene, and urethane synthetic materials, replaced flat belts. Now, the increased overall surface area material of contemporary belts adheres to pulley grooves through friction power, to reduce the tension required to transmit torque. The top area of the belt, called the tension or insulation section, consists of fiber cords for increased strength as it carries the load of traction power. It can help hold tension members in place and functions as a binder for better adhesion between cords and other sections. This way, heat build-up is reduced, extending belt life.
We’ve designed our V-belts for wear, corrosion, and heat level of resistance with OE quality fit and building for reliable, long-lasting performance.
V-Belts are the most common type of drive belt used for power tranny. Their primary function is to transmit power from a major source, like a engine, to a second driven unit. They offer the best mixture of traction, speed transfer, load distribution, and extended service life. Most are unlimited and their cross section is definitely trapezoidal or “V” designed. The “V” shape of the belt tracks in a similarly formed groove on a pulley or sheave. The v-belt wedges in to the groove as the load raises creating power distribution and torque. V-belts are generally manufactured from rubber or polymer or there could be fibers embedded for added strength and reinforcement.
V-belts are generally found in two construction groups: envelope (wrapped) and raw edge.

Wrapped belts have an increased level of resistance to oils and severe temperature ranges. They can be used as friction clutches during set up.
Raw edge type v-belts are more efficient, generate less heat, allow for smaller pulley diameters, increase power ratings, and provide longer life.
V-belts look like relatively benign and basic pieces of equipment. Just measure the top width and circumference, find another belt with the same sizes, and slap it on the drive. There’s only one problem: that approach is about as wrong as possible get.