Recommend me an ATC Spindle

[Ger21]

The typically 24,000 rpm chinese spindles are not suitable for use on a mill, and won't last long.

AliExpress has a lot of BT30 ATC spindles.

http://www.aliexpress.com/item/ATC-s...d-99c3fa989e32

[m_c]

One thing I find odd about all those ATC cartridges, is I've never seen any threads where people have actually used one. I've certainly never seen anybody complaining about them anywhere, so I'd assume they must do their job without any issues.

Another option to consider, is there a few Taiwanese spindle manufacturers who do built-in (aka with motor built in) spindles, however I've got no idea on pricing.
POSA, and Royal Spindles are two that I can remember, but I'm sure there are others.

[andy_con]

due to my setup I would hope a Chinese spindle would last long.

it wouldn't be directly cutting, it would be connected via a belt to the atc spindle which does the cutting. the Chinese motor would be driving the spindle

The typically 24,000 rpm chinese spindles are not suitable for use on a mill, and won't last long.

AliExpress has a lot of BT30 ATC spindles.

http://www.aliexpress.com/item/ATC-s...d-99c3fa989e32

[Boyan Silyavski]

due to my setup I would hope a Chinese spindle would last long.

it wouldn't be directly cutting, it would be connected via a belt to the atc spindle which does the cutting. the Chinese motor would be driving the spindle

What belt exactly are you planning to use for that?

[andy_con]

The one that's already in there doing the same job

What belt exactly are you planning to use for that?

[andy_con]

Sem servo motor to the rear, driving via a belt the atc spindle at the front

[Boyan Silyavski]

BUt that servo motor does not spin at 24k rpm. Neither the chinese BT30 spindles will spin very fast. Also these belts setup is not made to spin that fast as you wish. So i don't see how you are going to do that?

I dont know what jobs you are aiming to do, but from my point of view is absurd to change servo motor functionality / rigid tapping, etc./ for high speed.

I think best would be you change to BT30 spindle using your servo motor. Or add faster chinese servomotor. And separately add 3kw spindle for other type of jobs.

[andy_con]

as I said in my first post (opening post) the belt could operate on a 24k spindle but it would be right on its limits or speed. I'm only going by what the spec of the belt says, if you disagree take it up with the belt maker not me.

the atc spindle bearings recently went and I replaced them with high quality bearings capable of 26k.

the servo motor in the machine cannot do ridid tapping. its only a 1.5hp motor that spins at 4000rpm. it has lots of torque granted, but 4000rpm is mega slow.

BUt that servo motor does not spin at 24k rpm. Neither the chinese BT30 spindles will spin very fast. Also these belts setup is not made to spin that fast as you wish. So i don't see how you are going to do that?

I dont know what jobs you are aiming to do, but from my point of view is absurd to change servo motor functionality / rigid tapping, etc./ for high speed.

I think best would be you change to BT30 spindle using your servo motor. Or add faster chinese servomotor. And separately add 3kw spindle for other type of jobs.