The 2.2Kw Chinese Spindles - Info, Setup and Advice + More

[cropwell]

The connector on the left is a GX16, the one on the right is a spindle connector.

Internally they are a bit different, the spindle connector is a much higher current and voltage rating.



You can plug the GX16 into a spindle, but it is a sloppy fit and not a good connection.

[Neale]

You can plug the GX16 into a spindle, but it is a sloppy fit and not a good connection.

I use a bunch of GX16 (at least, that's what the Aliexpress seller called them!) for signal connections on my control box and never actually put one alongside the spindle connector to look at the difference. Just assumed that they were the same as they are superficially very similar. So much for assumptions! Surprised if they had a much higher current rating as the pin/socket size must be very similar but I guess that it's all down to how well they fit, spring mechanism, etc. Thanks for the correction, Rob - if I ever need to replace my spindle connector I'll make sure I get the right thing!

[cropwell]

Hi Brian,

I have a feeling that the spindle connectors are GX-20 or a derivation thereof. I am pretty sure that the GX series started out as aviation audio connectors (pilot's headset) and have been taken on by the world of amateur CNC. They are useful connectors though, but probably a bit too lightweight to chew mains voltages, but OK for small steppers and signals.

Cheers,

Rob

[Voicecoil]

Hi Brian,

I have a feeling that the spindle connectors are GX-20 or a derivation thereof. I am pretty sure that the GX series started out as aviation audio connectors (pilot's headset) and have been taken on by the world of amateur CNC. They are useful connectors though, but probably a bit too lightweight to chew mains voltages, but OK for small steppers and signals.

Cheers,

Rob

Looking at the connector on my spindle it's a tad larger than a GX-20 (I'm wiring up a load of those at the moment!), maybe more like a GX-25?? They have a voltage rating of 400V RMS in a 4 pole according to the Renhotec catalogue, so ought to be OK for most of the time. The only issue once in a blue moon might be spikes due to ringing as a consequence of poor cable, long cable runs etc. increasing the peak voltage.

[ericks]

Hi Brian,

I have a feeling that the spindle connectors are GX-20 or a derivation thereof. I am pretty sure that the GX series started out as aviation audio connectors (pilot's headset) and have been taken on by the world of amateur CNC. They are useful connectors though, but probably a bit too lightweight to chew mains voltages, but OK for small steppers and signals.

Cheers,

Rob

Yes, i have found some spindles with these audio connectors. Also found guys using audio screened cable on 2.2Kw spindle motors. That is why i said some suppliers wrongly use these connectors. And some diy hobby builders use the wrong cables.