Super Air Amplifier Keeps Web Tension Clutch Cool

Model 120022 2″ Super Air Amplifier

I was working with a new customer today who was in the maintenance department at a printing company. He called because he was looking for a cooling solution to a heat build-up problem that his company was having on one of their pneumatically controlled web tensioner systems. The heat was building up in the pneumatic clutch which was housed inside a box along-side the web roller shaft. The customer had just replaced the clutch not even one month ago and production had called them down because it was making noises again.

After performing some routine checks, maintenance determined that production was operating the line at a speed higher than what the clutch was designed for in order to meet production goals. The unfortunate part was that being inside an enclosure did not allow heat to dissipate quickly enough from the clutch itself. So, the customer wanted to know how EXAIR products might be able to help them with this heat dissipation issue.

Once I had an understanding of the application and the nature of the problem, I guided the customer to utilize model 120022 (2” Super Air Amplifier). The clutch housing became so hot that they could not touch it with bare hands. That established the fact that the temperature of the housing already had the established temperature differential that was needed. All we needed to do was to provide a flood of room temperature air into this enclosure and also direct it at the clutch’s friction surface to quickly dissipate that heat.

You might ask why the customer didn’t opt to use fans. The reason is that fans were not sufficient enough to drop the temperature of the clutch during periods of extreme operation. The clutch housing actually needed to be doused with a high velocity airflow that was non-turbulent in nature. This is precisely the kind of airflow that exits the Super Air Amplifier. Because it is laminar (non-turbulent), 100% of the air volume will be directed to impact the target surface. With fans, you do not get that and thus an overall reduction in cooling effectiveness when compared to an Air Amplifier. Also, an Air Amplifier uses only a small volume of air to induce a much larger flow of ambient air to perform the cooling task.

Many times automotive component manufacturers will use Air Amplifiers in a similar manner when they are testing shocks, struts, brakes and other suspension parts to simulate real world air movements while the components are under test in a test cell. When testing without air flowing around the component, excessive heat builds up and can cause premature wear and failure. Similar to the issue with the pneumatic clutch described above.

The Super Air Amplifiers are a great tool for providing localized cooling to carry heat away from components or other tools when they are being operated under stressful or less than ideal conditions. Think about your operations. Do you have some component that fails consistently due to overheating conditions? If so, contact us to discuss your application and see how we may be able to help.

Neal Raker, International Sales Manager

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