Anybody used these ? Hertz Brand spindle

**EddyCurrent** · 02-10-2013

2.2KW "HERTZ BRAND" SPINDLE MOTOR AIR COOLED | eBay

24000 RPM extra $129, tempted !

Edit: just thought, there will be import tax etc. to add on from Turkey

**Ger21** · 14-02-2014

Anybody?
Someone at CNC Zone has one, but his machine isn't finished yet. I may buy 2 of these later this year for my dual spindle machine I'm slowly working on. Shipping to the US almost double, though.

**Jonathan** · 15-02-2014

Air cooled... not so keen.

**Ger21** · 15-02-2014

Nothing wrong with air cooled except the fan noise. If I do end up buying these, I plan to investigate the viability of removing the spindle mounted fan and replace it with a quieter electric fan.

**Jonathan** · 15-02-2014

Originally Posted by Ger21

Nothing wrong with air cooled except the fan noise.

That plus the more limited speed range, but if you're adding your own fan I guess you can get round that.

**Ger21** · 15-02-2014

Yes, with an electric fan, the air cooled has more advantages.
Easier to mount, as it just bolts to the Z plate.
No water cooling setup needed.
With an electric fan, the noise level and rpm range become equal to the water cooled.

I've been using 10+HP air cooled spindles on big routers for over 15 years with no issues.