TIMING BELTS & PULLEYS PT. 2: TIMING BELT WEAR SIGNS | MECH MINUTES | MISUMI USA

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TIMING BELTS & PULLEYS PT. 2: TIMING BELT WEAR SIGNS | MECH MINUTES | MISUMI USA
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If you’re curious about timing belt wear signs, you’ve come to the right place, the second installment in our MechMinutes Timing Belts and Pulleys series. If you’re looking to get familiar with the differences between timing, round, V, and flat belts and pulleys, check out our first episode for belt and pulley basics. In this episode, we’ll be examining the warning signs that your timing belt is wearing down and might be about to fail.
If you’ve installed and are using your timing belt correctly, there can often be no warning of wear before it fails. In this case, it’s highly recommended to replace the belt at the manufacturer’s specified lifespan as preventative maintenance, to avoid catastrophic failure and machine downtime. Most belts are designed to last 3 years, given 8 to 16 hours operation per day, 5 days a week.
Determining whether a belt has wear signs due to improper setup or operation usually does not require special tools or equipment. Most of the following can be identified visually without too much effort.
When a belt is installed without proper alignment, one side of the belt will typically show more wear than the other. Key symptoms include cracked teeth or a single frayed edge, and occasionally tooth radius cracks may appear as well.
Crimp failures lead to stress concentrations in the belt after it’s folded over. Unfortunately, the most common way to detect this issue is upon belt failure; the belt may appear almost to have been cut, with an even break across the width of the belt. Ensure your timing belts are stored properly, are not folded over or bent past the specified bend radius, and avoid using improper tools like screwdrivers to remove the belts.
An over-tensioned belt, or excessive temperature, can cause excessive wear in the valley, or land, area of a belt. In this case, the tensile cord within the timing belt will be exposed between the teeth. To avoid this, make sure your belt is tensioned appropriately and not exposed to temperatures exceeding the manufacturer’s specifications.
Other environmental factors including contaminants like metal, dust, and other abrasives, as well as chemical exposure, can lead to excessive wear or cracks. This can be easily seen as uneven cracks across the back of the belt.
And finally, a belt which is tensioned too loosely can exhibit fit failure by “shark toothing”, where one side of the belt’s teeth is more worn than the other side, creating a shark tooth appearance.
The next time you’re concerned that your timing belt might be about to break, check for any wear signs to determine the best way to keep it running smoothly. This can help prevent machine downtime, and maximize belt lifespan. If alignment questions have you worried, tune in to the next episode to learn more and alleviate your concerns.
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TIMING BELTS & PULLEYS PT. 2: TIMING BELT WEAR SIGNS | MECH MINUTES | MISUMI USA

Видео TIMING BELTS & PULLEYS PT. 2: TIMING BELT WEAR SIGNS | MECH MINUTES | MISUMI USA канала MISUMI