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

[HankMcSpank]

I have just checked mine and i have continuity between spindle and body. Does that answer the question?

yes & no...it goes to show that there are some Chinese 300W spindles out there that have continuity & others that don't - thanks for checking though!

These ones on ali express (which seems to be a tad cheaper place to buy vs. ebay) all look much of a muchness, this one looks like yours...

http://www.aliexpress.com/item/Free-...666996832.html

another variant (quite similar)...

http://www.aliexpress.com/item/DC-12...677456541.html


Speaking of importing, I'm probably gonna buy this CNC machine (just the machine & steppers only - no drivers, spindle or VFD etc)....

http://www.alibaba.com/product-gs/82..._for_wood.html

....as I prefer a moving table machine (quieter...the moving gantry machines seemed to be designed like an acoustic guitar - i.e. a big 'soundbox' below the table to amplify the vibrations!) & nobody seems to sell moving table CNC machines anywhere in the UK (Premiersigns did have a similar model - one of which fivetide bought - but even they don't show one on their site now). The Chinese supplier is quoting $1000 delivered by sea which is about £650 + taxes, which for a 3020 ballscrew/ballnut machine constructed from Aloominum(!) seems reasonable.