[labnetwork] Seeking advice on shaft/bearing removal for Edwards nXDS10i pump

[Houpu Li]

Hi LabNetwork Community,

I am servicing an Edwards nXDS10i scroll pump with worn bearings at UC
Davis and need advice on shaft removal.

We have disassembled down to the exposed electric motor and removed the
bearing in the back, but the rotator and shaft remain firmly in the
position (it can rotate with a little bit of friction). Gentle manual
pull/push hasn't worked, and while we noticed 4 notches on the housing that
might take a specialized tool, we are unsure of their exact purpose. We
have a hydraulic press available, but I want to confirm if pressing the
shaft out is the safe/proper method for this model before trying it.
(Mounting the whole pump housing one the press seems to be another
challenge).

If you have experience replacing bearings on the Edwards nXDS series, any
tips on proper tools or procedures to remove the rotator/shaft would be
greatly appreciated! Thanks!

Best regards

Houpu Li

AMCaT Lab | MSE Department

UC Davis

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