OpenBuilds Style Build

[WoodKnot]

I can't recommend any because I only have experience with a single one, the one I use, and that is old now. I think the important thing is that it's large enough for you, so if I would buy one for you, I would select a 2.2kW with at least ER16. Also the inverter is important and there I also only have experince with one.

Hi A Camera -

Ok, just done a bit more research and starting to get my head around the ER collets and their sizes.

The spindles themselves look like a minefield!

WoodKnot.

[A_Camera]

Hi A Camera -

Ok, just done a bit more research and starting to get my head around the ER collets and their sizes.

The spindles themselves look like a minefield!

WoodKnot.

Beware, there are also different ER16 collets. I made a mistake and bought a number of collet nuts not knowing that there are two sizes, M22 and M19, and of course, the ones I ordered were M19. I was pretty surprised to see that they don't fit and that was when I realized my mistake. Oh well, now I have some extra in case I ever buy something which takes ER16 M19 nuts. Not as big mistake as yours was, so I can't really complain, but learn from my mistake, it's cheaper that way...

Regarding spindles, the other thing you should know is that not all of them has the protective earth connected, and in fact, not all have a connector which allows you to connect the PE. Beware, that if you go for the spindles on your own then it is of utmost importance that you connect the PE to the spindle, otherwise you are risking your life in case there is a short between the live motor connection and the motor housing. If the spindle has only three terminals you can't connect the earth, so in my opinion, you should not buy that motor. I suppose the motors Jazz is selling does have PE, but anyway, it is your responsibility to check and fix it. All type of electrical wiring is critical, but especially the high voltage part, where safety rules and regulations must be taken care of. Make sure nobody touching your machine is risking his/her life, so if you don't have the knowledge and don't know anyone who can lead you or do it for you then you should hire a professional or go for a low voltage solution. I don't know how you planned to work with the electrical parts, but you should start considering this part now, before you start spending more, and definitely before you get something like a 3-phase spindle + VFD + pump. Remember, safety first.

[JAZZCNC]

1. The "need" for the water cooled version is really exaggerated on some sites. While when you cut air it is more quiet than air cooled motors, but that benefit is immediately erased as soon as you start cutting because the cutting noise is taking over. Once you use the spindle for real cutting, the noise benefits are gone.

Don't agree with this, unlike you I have used both, and 100% a water-cooled spindle is quieter when cutting than an air-cooled spindle simply because you don't hear the fan and air turbulence. It's a little like comparing an Electric car to a combustion-engined car and saying when the wheels are turning they both make the same noise because of the tyres on the road.!!

Then you have the duty cycle to consider, an Air-cooled spindle as a limited amount of time it can be run before it needs to cool down, WC doesn't have any duty cycle and can be run continuously for days if required.

Until you have used a WC spindle you will never fully appreciate just how good they are.

Regarding spindles, the other thing you should know is that not all of them has the protective earth connected, and in fact, not all have a connector which allows you to connect the PE. Beware, that if you go for the spindles on your own then it is of utmost importance that you connect the PE to the spindle, otherwise you are risking your life in case there is a short between the live motor connection and the motor housing. If the spindle has only three terminals you can't connect the earth, so in my opinion, you should not buy that motor. I suppose the motors Jazz is selling does have PE, but anyway, it is your responsibility to check and fix it.

Actually, very few of these spindles have a PE inside the connector, even the ones with 4 pins are not connected inside the housing. However, if the machine is wired correctly regards grounds on the Chassis and gantry then it's not a problem as any short circuit will be caught.

But I agree if you want extra peace of mind buy a 4 Pin type and connect inside the spindle.