Yeah, it is partially because the ano process is really difficult to get right with them. They work with very tight tolerances, which is really nuts when you consider this:
We often marvel that we have to hold tolerances usually higher than even aerospace and still get complaints about micro vibe.
One thing not often recognized is that tolerance costs money. As mentioned before, we have noticed some of our competitors make the tolerance window bigger by expanding it into a tighter bearing post. This saves money because it’s just much easier to hit .001" than it is to hit .0002".
One other little bit of info here is that even our CNC machines have a tolerance…
@Durfee this is relevant to your question too.
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