V-Belt Suppliers share several very good features of V-belts.
They are easy and cheap to use: they do not require lubrication and V-belts and their corresponding pulleys are cheap and widely available. In many cases, you only need two pulleys and a belt.
Under excessive load, they will fail (either slip or break). This may sound like a bad thing, but in many cases it is a very good thing. Your belts may cost $10. If you don't have a spare, you can buy them locally. This is a much better place to fail than in your $500+ motor, which can take days to replace or elsewhere in your machine, which could set you back who knows how much or how long. v-belts can act as something like a fuse, a safe, easily replaceable point of failure in case damage occurs elsewhere.
They stretch and slip just a little bit, which gives us a couple of nice features. First, it helps reduce the transfer of shock loads in the system. When the load surges, the belt stretches slightly and slips slightly over the pulley. Both cushion the surge somewhat. the stretching and sliding of the V-belt also means you can put multiple belts in parallel and expect them to share the load equally. If I need twice the power transfer and don't want to use a larger belt, I can use two smaller belts. If one belt initially carries more load than the other, it will slip a little until both belts are evenly loaded. This may seem like an inevitable result, but in a hard drive system such as timing belts, roller chains, gearboxes, etc., it is impossible to ensure that multiple components share the load evenly. You may find that one component does all or most of the work until it fails, and then another component does all the work and it soon fails.
These same characteristics mean that they don't work perfectly for every application.
The fact that the belt does slip slightly means that V-Belt drives are not "synchronized". You can't connect two shafts with a V-belt and have two identical pulleys knowing they will remain precise. Synchronization. For this reason, you will not see V-belts used in precision motion applications. In these applications, it is important that the X rpm of the drive motor corresponds exactly to the Y inch of travel.
Slip also means that V-belts are not as efficient as some of the most efficient drive technologies, but in most applications this is not an issue. v-belts already perform very well. V-belts are more limited in extreme torque and speed conditions than other systems. They don't want to go too fast or too slow.
We also offer rubber tracks and Agricultural Belts, please feel free to contact us if you need them!