S30 vs S 30C spindle

[David Buchhauser]

My understanding ceramic bearings were used in part because in a VFD driven motor eddy currents are generated in the rotor and that current passes through a standard steel bearing roller balls and eats away or erodes those surfaces. Pretty well documented. Some makers use a slip ring of sorts or a spring wire touching the rotor shaft to drain off that current instead of ceramic bearings.

www.hpac.com/motors-drives/article/20926309/preventing-damage-to-motor-bearings

********************

Ceramic Bearings.jpg

[Scott Buehler]

David, did you mount a tool holder on your machine, or are you just changing them manually?

[David Buchhauser]

Hi Scott,
I have designed and built a retractable automatic tool changer.
David

20200201_000643_resized_1.jpg20200201_000625_resized_1.jpg20200201_001838_resized_1.jpg

[Scott Buehler]

Hi Scott,
I have designed and built a retractable automatic tool changer.
David

20200201_000643_resized_1.jpg20200201_000625_resized_1.jpg20200201_001838_resized_1.jpg

Out standing! Great job, I imagine that gives you full access to your 4x8 table?

[David Buchhauser]

I have this setup mounted on my smaller table, but if configured correctly, this design would work on a 4 x 8 table with no loss of usable table area.
David

[Jim Becker]

David, that's a really nice setup to provide ATC where there's limited space, etc.!

[David Buchhauser]

Thanks Jim!
David

[Rob Stoner]

Same thing with this one, pretty much "plug&play". It comes with a manual with instructions, plus the vendor was very helpful with any additional information needed. And if you need additional tool holders or collets the price was $20 per tool holder and $5 per collet. These are very high quality tool holders and collets, so I ordered some additional. As a plus, this spindle is water cooled (not fan cooled) so it is much quieter that my other air cooled spindle from Avid. I will post some photos later this evening with some details.
David

David, any change you can post the seller name or and updated link/name to the spindle on ebay? the link I found above in this thread is dead unfortunately.

Have my new 5x5 on order and want to get it set up with an atc spindle from the start.