I have just been reading an online article/blog claiming the benefits of using shrouds and bellows to protect hydraulic cylinder rods. We moved away from this method of protection many years ago.
It became very obvious to us that shrouds and bellows created more problems than they solved.
As the bellows extend and retract they must be able to breathe often through small filters to stop contamination entering. These small filters can easily block with the result of damaged bellows. Now it will be possible for contaminated air to enter and debris can build up creating a compacted solid mass and held in place by the bellows. This can cause considerable damage to the rod, the very thing you were trying to prevent.
Our conclusion is, do not use bellows as they make the situation worse.
You may have a different view that I will be pleased to hear
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