A little Help with Hiwin Selection

[grain_r]

Hello Everyone

I continue with my build and it evolves as I build.

My Build Bog can be found here http://www.mycncuk.com/threads/7936-...uestions/page9

Because its taking a long time to build with limited time from the family and work I am changing from Supported Round rail to Hiwin Rails.

But I am confused with everything I have been looking through the posts but still I am confused on the selection.


I have looked at BST on Aliexpress but I have also found a UK supplier Which have spec'd up
from Moore-International

x2 350mm X 20mm
X2 900MM X 20MM
X2 1200MM X 20MM

The Rails are Model - HGR20RH -

And the Carriages are - HGH20CAZ0H High Accuracy Low Preload

£621,88 Ex Vat which is better than Aliexpress because of the delivery and potentially the import duty.

I don't want to get it wrong so any help would be appreciated.

I'm not sure if the pre load is important (Does this need selecting because of the weight of the gantry and attached devices.)

Soe of the rails are flanged and others not but again i'm not sure if it is just a design thing for installation of better.

Or is Any Hiwin for a general Machine going to work and be better than the Support rails I have sitting unused.


Thank you

Rob