Depallletizer problem

Hi people!
If anybody can advice something, please do it.
In short:

We have a downtime now, because of the parts replacement. We want to recondition the bottle line depallletizer. The point is that our bearings are not long lasting, maximum 6 months. Then we have to replace them again.
Now we use the hubcity bearing … 1_hubcity/

Is there something more quality? Maybe not American but from European manufacturer.
Who can advice the supplier?

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