Aluminium Extrusion Diametrical Tolerance.

[Gazci]

Hi all, does someone have experience of achievable tolerances for Aluminium Extrusion? My supplier is offering a tolerance range of 1mm on a Ø25.5 and 1.5mm on a Ø51.25. I believe that for a < Ø30 + or - 0.30mm is achievable and and < Ø51 +/- 0.40mm is not out of the question according to some literature that I have. Could anyone shed some light on which is more achievable please.

Regards,

 

[EdStainless]

Is this a round or other shape? Are you buing a lot of it?

= = = = = = = = = = = = = = = = = = = =
Rust never sleeps
Neither should your protection

http://www.trent-tube.com/contact/Tech_Assist.cfm

 

[Gazci]

It is a rectangular external profile shape with the diameter extruded through the middle. Difficult to explain without the drawing. I have seen far more complicated extrusions around though. Basically....

xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
xxxxxxx xxxxxxxx
xxxxxxx xxxxxxxx
xxxxxx xxxxxxx
xxxxx xxxxxx
xxxx xxxxx
xxx <--diameter--> xxx
xxxx xxxx
xxxxx xxxxx
xxxxxx xxxxxx
xxxxxxx xxxxxxx

Flash draghtsmans skill there!