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Does anyone happen to know the CFM specs on the 40x40x10 fan used to cool the base of the v2?
I am not near my machine and would like to order a quieter fan.
Because of the soundproofing I added during my build, and the stepper motor isolators, my machine is extremely quiet, and I want to see if I can make it even quieter.

I do not know the cfm of the fan seemecnc uses but they do sell a replacement or you can go to
http://www.amazon.com/Protechnic-Fan-12 ... ings+12VDC

The CFM of the one on Amazon is 6.71 with 2 ball bearings

I am considering using this fan. It is 14db 6CFM
It uses fluid dynamic bearings.
I have used SilenX fans in the past... Very quiet.
http://www.silenx.com/quiet.fans.asp?sku=ixp-13-14

AlanZ wrote:I am considering using this fan. It is 14db 6CFM
It uses fluid dynamic bearings.
I have used SilenX fans in the past... Very quiet.
http://www.silenx.com/quiet.fans.asp?sku=ixp-13-14

It looks like a very good fan and it is good to go with what you are familiar with.

oh, my mistake.
The fan I meant was the main exhaust fan... and that's 60x60x25mm
I pulled out the fan, and it's a Sunon Fans MB60251V1-000U-A99
23.5 CFM and 33.5db

The fan I want to replace it with is 18 CFM and 16db
http://www.silenx.com/quiet.fans.asp?sku=ixp-34-16

I think this will be plenty of air flow, especially considering that I cut a 60 mm opening in the panel on the X-Z access, so there is easy air flow.

I think I will give this one a try instead of the SilenX...
It allows you to pick the speed/noise using adapters, so the middle range is 23.5CFM and 14.5db

http://noctua.at/en/nf-a6x25-flx