MechMate CNC Router Forum

Go Back   MechMate CNC Router Forum > Structure & Mechanics > 20. Gantry
Register Options Profile Last 1 | 3 | 7 Days Search Today's Posts Mark Forums Read

Reply
 
Thread Tools
  #1  
Old Fri 31 October 2008, 07:19
soulvoid
Just call me: Håvard
 
Stavanger
Norway
Extra long gantry and choice of dimensions - weight issues?

With regards to this thread http://www.mechmate.com/forums/showt...antry#post5299

I intend to build an 3500mm long gantry with 120x60 tubes. However the wall thickness available in 120x60 start at 4mm... Is 120x60x2mm a standard dimension in the rest of the world?

According to my calculations, the tubes at 3500mm over 6'(1800mm) and 4mm over 2mm would be about 60 kg heavier...(76kg vs. 17kg) I can live with slower acceleration/speed, but this seems like it might be a little too much...

Any comments appreciated.
Reply With Quote
  #2  
Old Fri 31 October 2008, 23:53
Gerald D
Just call me: Gerald (retired)
 
Cape Town
South Africa
Håvard, I have seen 120 x 60 in 2, 2.5 and 3mm wall thickness in Germany when designing some things for them before. It was in QSTE tube (higher strength) but that is not important for us. I would think these are very common sizes, in various steel grades.
Reply With Quote
  #3  
Old Sat 01 November 2008, 02:42
Gerald D
Just call me: Gerald (retired)
 
Cape Town
South Africa
Hebra should be able to give you advice on where to look for it.
Reply With Quote
Reply

Register Options Profile Last 1 | 3 | 7 Days Search Today's Posts Mark Forums Read

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -6. The time now is 03:49.


Powered by vBulletin® Version 3.8.3
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.