Chinese Spindles

[i2i]

no reason why we can't keep going down this line, it just means my ones will be slightly different

[Ricardoco]

no reason why we can't keep going down this line, it just means my ones will be slightly different

im sure we will get there, as i said i can wait for the best solution anyhow..

Rick

[i2i]

News from my end, i'm having the existing spindles reground to match the 30 taper, when they're back i'll see if they do the job. If so i'm out guys, this will save me a fair bit so i have to try it.

[Jonathan]

News from my end, i'm having the existing spindles reground to match the 30 taper, when they're back i'll see if they do the job. If so i'm out guys, this will save me a fair bit so i have to try it.

Did you get anywhere with this?

I just spotted that the 6000rpm spindle from the same seller linked to earlier has 5% off and more interestingly someone's actually bought and reviewed it:

EN027# Spindle with synchronous belt for CNC milling BT30 ATC steel ball clamp+ disc spring+drawbar-in Machine Tool Spindle from Industry & Business on Aliexpress.com

'Fast delivery and nice spindle, but not the dimensions shown on the drawing on the listing. Diameter is 80mm above the flange and 85mm below it. It is in fact a SIPU model SPP8030-060-10F But still a BT30 ATC and 6000rpm so I am happy. :) FYI the timing pulley is a 45 tooth HTD5M and is 35mm wide Thanks'

Still too much to spend for me to only get 6000rpm...

[i2i]

got the spindles back from the grinder and a bt30 hoder rings quite well into them. I'm in two minds now whether to leave the motor/pulley arrangement as is (bridgeport), or remove the pulley section and mount the motor directly on top of the spindle with a drawbar through the motor.

[i2i]

Well I got there in the end but via a different route. I ended up buying two HSD router spindles which have a 30 taper and air powered atc. They are 6.8kw and 24000 rpm, and should have a fair bit of power run at slower speeds.

[Jonathan]

Both of these I presume?

[i2i]

yes, both of those. I looked at a 10kw one locally and as it was 380v only I decided not to go for it, which after the auction had finished I regretted not getting it. Then those two appeared so it had to be.

[i2i]

got the steel ordered for the adapter plates, so hopefully next week i'll have them mounted on the Quatros.

PS I bought another Quatro the other day but i'm setting this one up as a cnc slotter.

[biketrialsdave]

I know this thread is very old but just read from start to finish. Did anyone buy a Chinese spindle in the end? Any other DIY spindles come through since Henrik's one on cnczone? I can see myself designing a mill in the future and I think BT30 is the way to go.