Glass laser tube essential info

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Robert Komada
Posts: 11
Joined: Thu Jul 14, 2016 10:29 am
Location: San Francisco

Re: Glass laser tube essential info

Post by Robert Komada » Tue Nov 01, 2016 11:29 am

If you are looking at a CW5000, I would also look at I have their 600W chiller (they also have larger chillers): ... -P999.aspx

and it has been working very well for my 50W 500x300mm laser. The only surprise is that it holds a really small amount of water, but it easily keeps my laser water temperature at 19 degrees C for some of the hours-long cutting projects that I have done.
"50W" eBay SH-G350 500x300mm laser
RDWorks 8.01.18
Robert from San Francisco, CA

Doug Fisher
Posts: 515
Joined: Sat Aug 20, 2016 12:42 pm
Location: Atlanta, Georgia, USA

Re: Glass laser tube essential info

Post by Doug Fisher » Tue Nov 01, 2016 10:34 pm

If you can double the life of your laser tube before going through the hassle of buying and installing a new one, a real chiller like a 5000 might not seem so expensive. We had a really hot summer here and it was very nice to be able to go fire up the laser and be able to start cutting almost immediately without any worries about having enough ice packs, waiting to cool down the water, etc.

One advantage of air conditioning the whole garage in a really hot climate would be minimizing potential condenstation/sweating issues, particularly in the areas where water is routed inside the laser's cabinet next to the high voltage!
80 Watt 700mm x 500mm Ke Hui KH-7050 Laser (Similar to the Red Sail),T.R.
LaSea/EFR F2 Series laser tube, RuiDa RDC6442G EC controller, 2" lens, RDWorks v8.01.18, CW 5000 chiller, Chuck type of rotary attachment

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sebastien laforet
Posts: 164
Joined: Wed Sep 07, 2016 3:23 am
Location: Lyon
Country: France
Laser Machine Make or Type: bodor BCL0605MU
Laser Power: 100W
Laser Bed Size: 60*50cm
Home Position: TR
RDWorks Version: 8.01.19
Windows Version: 7

Re: Glass laser tube essential info

Post by sebastien laforet » Wed Nov 02, 2016 1:17 am

just a point... yesterday i made some cutting and it was 14°c in the workshop. i have a CW-5000 which is set to maintain water at 21°c, so it did not start to work until the water warmed to this temperature.

i have cut during something like 30mn with a 100w laser to get from 14 to 21°, the chiller contains 6 liters of water.

you can do the math, but at first approximation, you can heat 1 liter up 1 degree (celsius) every minute of use for a 100W laser around 60% power.

note that 14°c is fresh, so "natural" dissipation of heat was probably involved, which could not be the case if you work at 25°c for example.

all considered, supposed you start with 10l at 20°, and work up to 25° with no chilling (ice pack or whatever), you could run 50 minutes at most.
Sébastien Laforet
machine : Bodor BCL-0605 (60x50) with 100W laser with TR origin.
Live in France
Primarily works laser for my wife (school teacher, so lots of boxes, letters, puzzles, ...) and miniature scenery (32mm scale : warmachine, infinity)

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