Why Can You See Blisters on Your Hydraulic Hoses?

Hydraulic hose damage can be internal or external. Sometimes, you get an obvious break in the hose that tells you it needs replacement; other times, the surface of the hose shows signs of damage that are a warning sign that all is not well.

For example, if you can see bumps or blisters on the surface of a hose, then you need to work out where the problem lies. External bumps and blisters can be a sign that the inside of the hose has a breach or area of damage. Where do these bumps or blisters come from?

Air in the System

The air that goes through your hydraulic hoses and system should be carefully controlled. If you get too much air trapped in a hose, then it can cause a problem. Its extra volume can affect the hose's ability to carry its core supply.

Sometimes, this cause pressure spikes. Trapped air can force the hose out of shape. For instance, it can get into spaces between the inner structure of the hose and its cover. When this happens, you see bumps or blisters on the surface. These areas usually contain air bubbles that have forced their way in and then can't escape.

If you have a trapped air problem, then you might be able to repair the hose by cutting out affected areas and splicing the hose back together. If you have multiple damaged areas, then a new hose might be a more logical solution.

During the repair or replacement process, you should also address the trapped air problem to prevent it from affecting the hose in the future. So, you'll probably need to bleed your system to get rid of any residual trapped air as well.

Incompatible Hose Materials

Not all hydraulic hoses can cope with all the materials they might have to carry. If a hose material isn't compatible with a chemical or gas that runs through your system, then the hose can get damaged. This damage can show as bumps or blisters on the hose's surface.

Here, a substance can work its way out from the inner parts of the hose until they come into contact with the cover. Or, they might erode parts of the inner hose away. If the hose has a hole or break, then a substance can get out to collect in the area and create a bump or blister.

If your hose isn't compatible with the substances it carries, then you need a replacement rather than a repair. A more suitable product won't have the same problems in the future.

For more advice, contact hydraulic hose repairs specialists and ask them to take a look at the problem. A hydraulic hose repair service can provide additional information.