Chinese 300W DC spindle - is the spindle shaft grounded?

[HankMcSpank]

Thanks for the info ...problem is unless it's 100% all the time, then there's gonna be a lot of tool breakages ...and I can't really spin the spindle prior to every session just to warm up the grease (my cnc sessions only last about 5-10 minutes as it is!)

As an aside, this 300W spindle has claimed its first victim - a 0.8mm drill -I forgot to put the grounding croc clip on the *%~+'ing spindle shaft (I never had to do this with my proxxon) ...this is now an emergency issue for me! lol

In the light of your results, it's now looking like bodge 'A' or bodge 'B' (or bodge 'C' which is have some spring steel press down on top of the shaft - which is what some Zen toolworks spindle owners have done)