Well here goes... Aluminium frame router design

[JAZZCNC]

Best get some more beer in then! What about the rubber seal, should it be spinning with the ballscrew?
Cheers. Charlie

No it shouldn't be touching the seal.! . . . Sure you haven't lost the little spacer.?

Some times they can be different lengths so check this. I've also known them be too short has well thou so it may mean spacer or making another.

[CharlieRam]

The spacer is the thin tube that fits in the rubber seal upto the bearing ID right? if so then they yes they are there, I will check if both sides are the same length and if not I will swap them over.