Using stainless steel tube for linear bearings

[totts]

Linear shaft is induction hardened, which means the outside layer is hard. Around the 50-60 hrc. The middle of the shaft is usualy soft enough to drill and tap.

The stainless steel tube will pit after a short while where the internal race of balls will wear into the stainless shaft loosing the accuracy and smoothness.

Also tubing will be far less rigid thand solid hardened shaft/ supported shaft.

If you want to use the stainless shaft then you are best off using ferrite/ brass bushes lightly oiled.

Hope this helps

[Desertboy]

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