Water cooled chinese spindle collets, Advice from owners please

[JAZZCNC]

I wouldn't be so sure. They're well built for high rpm use...

I don't think it would make that good a spindle for a lathe, unless the lathe is very small, since it uses angular contact bearings. Most lathes use tapered roller bearings since their load ratings are much much higher. Angular contact bearings are the only bearings suitable for high speed and axial loads, but you don't need that high a speed on a lathe (unless it's something special) so why compromise the rigidity so much by using the wrong bearing type. Same is probably true for a spindle for cutting steel since again that's low rpm and you need higher rigidity for cutting steel.

Yep but better than sat on a shelf or in the scrap bin.!!
Plus it's no big deal or expense to change the bearings know is it.! . . Remember Jonathan I'm the original