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Air spring failure-vertical cracks

Air spring failure-vertical cracks

Air spring failure-vertical cracks

Our heavy truck cab suspension air springs are failing with vertical cracks, as shown at attached photo.
Horizontal cracks are result of fatigue. However supplier hasn’t found root cause and solution yet. Fatigue test is running again but failure can not be replicated at lab test.
We repeated ozone test with small air rubber specimen, similar issue can ne be replicated neither.
There is no rubbing.
I will be appreciated if you can share your comments.


RE: Air spring failure-vertical cracks

Looks like dry rot to me. They either aren't seeing enough use, or if they are, the rubber formulation needs alterations.

RE: Air spring failure-vertical cracks

May wish to take a look at proximity to any exhaust components as well.

RE: Air spring failure-vertical cracks

It seems that the rubber was cooked and cracked. Mr168 might be right, a heat source was around.

RE: Air spring failure-vertical cracks

Choice of materials. What is the material? And how does it compare to other air bag manufactures? Country of origin etc.

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