Top 7 Causes of V-belt Failure
V-belts offer a high-efficiency level and are a low-maintenance option for mid to high-power belt drives. As a result, v-belts are one of the most widely used parts of modern machinery, present in practically every sector, from agriculture to pharmaceuticals.
Check your v-belts or pulley belt visually for any of the following signs to prevent early failure and unanticipated downtime:
1. RAPID SIDEWALL WEAR
Even though side wall wear is expected over time, it might be a symptom of a broader issue when it happens quickly since pulley wear or damage is typically to blame. The use of belts in sweltering conditions, high amounts of oil, grease, moisture, and other generally abrasive environments can also contribute to this sort of wear.
Solution: To make sure you are getting the most out of your belt systems, replace the pulleys when changing belts. You have to replace the pulley wall if it is shiny and brilliant.
2. WORN COVER ON BACK
Most frequently, back wear is due to the belt being pulled or strained against the pulley or because the strap has some extra slack vibrating against the idler and damaging it. Although this is less frequent, occasionally worn or malfunctioning backside idlers can also contribute to worn backside covers.
Solution: It’s crucial to check that you install the belts with the proper tension. Even adequately sized belts regarded as “fit and forget” require re-tensioning within 24 to 48 hours of installation.
3. BELT SOFT, SWOLLEN
Some v-belts can suffer from excessive exposure to oil or grease because these substances can make the belts swell and soften, making it impossible for the belt to fit snugly into the pulley groove. You can place similar blame for this kind of issue on belt dressing.
Solution: If belts are functioning under challenging circumstances, likely, they need to be operating to their total capacity. Simple belt guards can keep extraneous objects like grease and oil from contaminating the drive, but it’s important to remember you will never use those belt dressings. Consider utilizing a composite v-belt like Fenner PowerTwist belting if oil and grease are still issues because they are typically resistant to these substances, water, and other common industrial fluids.
4. BELT SLIPS, SQUEALS (SPIN BURN)
Spin burn can be brought on by worn or damaged pulleys, improper tensioning, and other factors. These factors can cause damage to your belts and eventually lead to premature failure. This may also result from utilizing the incorrect belt cross-section or type, excessive amounts of grease, moisture, or oil, as well as from employing a small pulley with lousy wrap.
The best action is to examine your pulleys and belt tension because smooth pulleys and under-tightened belts cause uneven wear. You might discover that your v-belt must be re-tensioned or require new pulleys.
5. SPLIT BELT COVER
There is a lot to discuss and say about the damage that can bring by squeezing a belt onto a pulley or running your v-belts at the wrong tension, as this is the most frequent reason for many sorts of belt damage, including cover splits.
Solution: If you’re confident that there are no foreign things in the grooves that could be the problem, then make sure that the belts are tensioned regularly and that the correct size belts are ordered each time to help avoid this problem.
6. UNDERSIDE CRACKED
Belt cracking can be very problematic, especially if untreated, because it can reduce drive efficiency and finally result in belt failure. Belts exposed to high temperatures frequently start to develop cracks. Although sometimes, the cause of the cracking can be pulleys and backside idlers that are too tiny or out of alignment.
Solution: If your v-belts operate at high temperatures, switch to an EPDM rubber belt, which is made to handle high temperatures without prematurely or needlessly failing.
7. MISSING COGS
You should immediately change belts with missing teeth since missing cogs might make them slip and break. The pulleys being too tiny or out of alignment and extreme heat are the three most frequent causes of a disappeared cog in a belt. Belts stored improperly or for an extended period may also contribute to it.
Solution: Once more, think about belts made for these situations if your cogged v-belts operate in extremely hot or cold temperatures. Additionally, confirming that your pulleys are appropriately aligned utilizing a laser alignment tool will eliminate the potential issue and enhance machine performance.
These were the top 7 causes of V-belt failure. Remember to avoid other v-belt failures as much as possible!