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 can be transmitted because of this of the belt’s adherence to the pulley) are an economical option for industrial, auto, commercial, agricultural, and house appliance applications. V-belt drives are also simple to install, require no lubrication, and dampen shock load.
Here’s the catch: Regular friction drives can both slip and creep, leading to inexact velocity ratios or degraded timing precision between input and output shafts. Because of this, it is important to choose a belt appropriate for the application accessible.
Belt drives are among the earliest power transmitting systems and were widely used through the Industrial Revolution. Then, toned belts conveyed power over large distances and were made from leather. Later, demands for more powerful machinery, and the development of large markets like the automobile industry spurred new belt designs. V-belts, with a V Belt trapezoidal or V shape, made of rubber, neoprene, and urethane synthetic materials, replaced toned belts. Now, the improved overall surface material of modern belts adheres to pulley grooves through friction drive, to reduce the tension required to transmit torque. The top section of the belt, known as the tension or insulation section, contains fiber cords for increased strength as it carries the strain of traction power. It can help hold tension members in place and works as a binder for better adhesion between cords and various other sections. In this manner, 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 match and structure for reliable, long-enduring performance.
V-Belts are the most common kind of drive belt used for power transmitting. Their primary function is usually to transmit power from a principal source, like a motor, to a secondary driven unit. They offer the best combination of traction, acceleration transfer, load distribution, and extended service life. The majority 
are endless and their cross section is usually trapezoidal or “V” formed. The “V” shape of the belt tracks in a similarly shaped groove on a pulley or sheave. The v-belt wedges in to the groove as the strain raises creating power distribution and torque. V-belts are generally made of 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 intense 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, boost power ratings, and offer longer life.
V-belts look like relatively benign and basic devices. Just measure the best 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 you can get.