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

[HankMcSpank]

Well asbo's spindle arrived in the post today...as expected the bracket mount holes didn't align with my machine's Z axis, so an adapter/ bracket was quickly knocked up & it's all mounted now.

First impessions are favourable.

I can confirm that asbo isn't going doolalley.... ie there's no continuity between the chassis/casing & the shaft ....wtf? I'll look at lashing something up as a kludge, because putting a croc clip on the spindle shaft for every tool change is gonna get old very quick!

I've already removed the top fan & spindle is indeed whisper quiet ...like so quiet you have to double take whether the thing is even on! (& I typically only use my spindle for 10 minute sessions & whilst it got warm over 10 mins, it didn't get scorchio).

Changing tools on these things is a ballsache vs my proxxon (which uses a tommy bar to stop the shaft turning)....also, even with the nut loosened, you have to continue loosening a fair bit more just to get the tool to finally release, it feels like you have to be an octopus....need to mull this aspect too!