Water-cooling CNC spindle with PC components?

[M@tree2]

Hey all, has anyone been able to successfully cool their CNC spindle with spare custom loop components or even old AIO's ?

Any help with this matter would be much appreciated, thinking of building a CNC and I'm a bit lost on what to use to cool the spindle properly, I have an old AIO or two lying around, I assume the spindle inner is aluminum, thus introducing copper isn't a good idea at all...

Would an AIO pump at max be enough to cool the spindle though, I'm surmising not?
Spindle size: 1.5kw/2.2kw VFD drive

Kind regards

 

[Off-The-Chart]

do you have a spindle already?

CNC Spindle Motor Water Cooled 2.2KW Kit

Powerful high speed spindle motor used for cutting and engraving in large CNC machines

neotronics.co.za

 

[M@tree2]

do you have a spindle already?

CNC Spindle Motor Water Cooled 2.2KW Kit

Powerful high speed spindle motor used for cutting and engraving in large CNC machines

neotronics.co.za

Not yet, just wasn't sure about neotronics...

I would still introduce a rad or two into this loop, if for nothing other than "COOLNESS" factor

 

[Off-The-Chart]

Not yet, just wasn't sure about neotronics...

I would still introduce a rad or two into this loop, if for nothing other than "COOLNESS" factor

yes definitely

I think they skip that piece

I also think a small reservoir

 

[M@tree2]

yes definitely

I think they skip that piece

I also think a small reservoir

They do unfortunately skip that piece of a rad, a small reservoir would work well.
A bucket would work for a start, will look for something slightly better in the meantime...

Only planning to start building in July.

I assume the spindle internals are aluminum?

 

[Off-The-Chart]

tbh, out of the few builds I have watched, none of them actually mentioned anything in terms of having to look out for the radiator needing to be alu

then again, the sadness of seeing these beauties have made me not really investigate it more

 

[M@tree2]

@Off-The-Chart that's rather interesting, I found a forum where someone was having a proper rant about the mix of materials...

Hopefully, this one will be up and running by the end of August, first I need to design in F360

 

[Off-The-Chart]

A Look Inside a Chinese 3.0kW Water Cooled Spindle

Hi All, I've seen pictures of disassembled 2.2kW spindles here but not much talk of the 3kW's, so I thought I'd post some. I bought this from a guy who

www.cnczone.com

so think if you can get an alu rad, then it should be a bonus

 

[M@tree2]

A Look Inside a Chinese 3.0kW Water Cooled Spindle

Hi All, I've seen pictures of disassembled 2.2kW spindles here but not much talk of the 3kW's, so I thought I'd post some. I bought this from a guy who

www.cnczone.com

so think if you can get an alu rad, then it should be a bonus

I have one lying in the garage...
240mm CM AIO, developed a leak on the block.

 

[Off-The-Chart]

@SphinxMods you delve deeper into this?

 

[rinners]

Is the water recirculated?

 

[P1000]

A cheap pump would probably be better. The radiator would probably also not be sufficient.

Rather get a radiator from a scrapyard. The ones meant to heat the interior of the car should be a good fit. Otherwise just use a 20l bucket like most people - it should provide enough thermal mass for most jobs.

 

[Off-The-Chart]

@rinners same as a loop

@P1000 why won't the rad be sufficient?

all builds I checked make use of something like a Swiftech 240 rad

as for pump, yeah think would go with a better option than AIO pump

think can use like a fish tank pump

 

[rinners]

@rinners same as a loop

So this is to cool something other than the tooling? Or how is the heat transferred away from the cutting surface if the fluid isn't sprayed directly onto it? And if it is sprayed on, how is the cut waste material separated out from the fluid?

Edit: just saw it's for the drive, how many watts is it rated?

 

[Off-The-Chart]

So this is to cool something other than the tooling? Or how is the heat transferred away from the cutting surface if the fluid isn't sprayed directly onto it? And if it is sprayed on, how is the cut waste material separated out from the fluid?

no, this is to cool the actual spindle holding the tool

 

[M@tree2]

Okay, so after some consideration and actual costing of water cooling a spindle PROPERLY, you need about 2x480XE Rads to deal with 1.5kw of heat, I'm going to go with Air cooling for now.

 

[Snazzylicious]

Please setup a research and build thread for us.


Would love to build one of these too.

Sent from my Mi Note 10 using Tapatalk

 

[Off-The-Chart]

Okay, so after some consideration and actual costing of water cooling a spindle PROPERLY, you need about 2x480XE Rads to deal with 1.5kw of heat, I'm going to go with Air cooling for now.

hehehehe

wonder how this is affecting the guys I see use only a 240

 

[M@tree2]

Please setup a research and build thread for us.


Would love to build one of these too.

Sent from my Mi Note 10 using Tapatalk

I'll set that up shortly!

 

[M@tree2]

hehehehe

wonder how this is affecting the guys I see use only a 240

I wonder, most people use a 25L bucket with a 240 rad, so that's why they are getting away with it.

 

[Off-The-Chart]

I wonder, most people use a 25L bucket with a 240 rad, so that's why they are getting away with it.

why is that?

I was surely under impression that more water doesn't = lower temps since the water will equalize?

 

[M@tree2]

why is that?

I was surely under impression that more water doesn't = lower temps since the water will equalize?

Yeah, that is true, but a larger volume will take longer to saturate and most machines with that sort of loop, don't seem to run for longer than a few hours at a time.

 

[Off-The-Chart]

well, if you going with Neo, let us know

I would also love to do a CNC but at the cost of the right parts from start (would like to do metal from start), it will be something that will have to be bought in stages

I am going to copy the main frame from an AvidCNC machine which they actually give out the plans for assembly out of alu extrusion

 

[M@tree2]

well, if you going with Neo, let us know

I would also love to do a CNC but at the cost of the right parts from start (would like to do metal from start), it will be something that will have to be bought in stages

I am going to copy the main frame from an AvidCNC machine which they actually give out the plans for assembly out of alu extrusion

I'll let everyone know when I have a build log going, but I'm building this so I can machine aluminum etc, so frame is starting with T slot extrusion, and then 5mm steel plates for extra reinforcement.

 

[Off-The-Chart]

I really don't think you will need extra steel plates if you go with something like 4040/4080/40120 extrusions

hell you can even do extreme and go 8080 type but that costs an arm and a leg for full frame

 

[M@tree2]

I really don't think you will need extra steel plates if you go with something like 4040/4080/40120 extrusions

hell you can even do extreme and go 8080 type but that costs an arm and a leg for full frame

Where would I manage to get this?

I haven't been able to find 40mm variants anywhere

 

[M@tree2]

I really don't think you will need extra steel plates if you go with something like 4040/4080/40120 extrusions

hell you can even do extreme and go 8080 type but that costs an arm and a leg for full frame

You can get it at DIYGeek, but judging on reviews of their shopping experience, that's not a great idea.

 

[M@tree2]

https://carbonite.co.za/index.php?threads/cnc-build-logs.370361/

@Off-The-Chart @The_ONE

 

[M@tree2]

So this is to cool something other than the tooling? Or how is the heat transferred away from the cutting surface if the fluid isn't sprayed directly onto it? And if it is sprayed on, how is the cut waste material separated out from the fluid?

Edit: just saw it's for the drive, how many watts is it rated?

1500W, have decided to go with air cooling for now.

 

[Gabushna]

Just make sure there is sufficient airflow to the back end of the spindle, you could also modify some aluminum heatsync that would help with distribution.

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