On 8 November 2015 at 17:10, Karlsson & Wang
<nicklas.karls...@karlssonwang.se> wrote:

> Hydraulic, that seems interesting how does hydraulic compare to a ball screw 
> then it come to back slash and accuracy?

Accuracy is limited by the feedback device, I think.

Servohydraulic cylinders are a bit different to normal ones. They
generally don't seal the piston particularly, but a Moog-valve
controls the differential pressure across the piston and the servo
action compensates for any leakage.

-- 
atp
If you can't fix it, you don't own it.
http://www.ifixit.com/Manifesto

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