Thread: Need help finding CAT30 shell mill holder

I;ve got a friend with a Robodrill and he wants to use a 2" carbide insert shell mill on finishing aluminum. Neither of us seem to be able to find a CAT30 holder with a 3/4" pilot diameter.

Does anyone know of a company selling one? I checked Lyndex-Nikken, Teknics, and Parlec. No luck.

Mari carries them in Bt30, but doesn't help in the toolchanger dept.

Originally Posted by PixMan

I;ve got a friend with a Robodrill and he wants to use a 2" carbide insert shell mill on finishing aluminum. Neither of us seem to be able to find a CAT30 holder with a 3/4" pilot diameter.

Does anyone know of a company selling one? I checked Lyndex-Nikken, Teknics, and Parlec. No luck.

If you cant find one you can get an AB tool one and cut the shank. it goes in a solid endmill holder Shear-Hogs (Shank Style) - AB Tools Inc

Originally Posted by dstryr

If you cant find one you can get an AB tool one and cut the shank. it goes in a solid endmill holder Shear-Hogs (Shank Style) - AB Tools Inc

Nice idea, but those cutters are noisy and have expensive inserts. Moreover, the reason he needs the holder is because he's got a brand new expensive cutter & a near lifetime supply of inserts sitting there.

I also had found them in BT30, but I'm pretty certain that a Robodrill T21 takes CAT30.

Originally Posted by PixMan

I;ve got a friend with a Robodrill and he wants to use a 2" carbide insert shell mill on finishing aluminum. Neither of us seem to be able to find a CAT30 holder with a 3/4" pilot diameter.

Does anyone know of a company selling one? I checked Lyndex-Nikken, Teknics, and Parlec. No luck.

There is a used one listed on ebay now for $29.99 in Ohio.

All the Robodrills that I own take BT30.
Your search may be simpler than you thought.
I am not aware of any Cat30 tool holders or spindles.
I could be wrong, I have lead a sheltered life.

Originally Posted by 3t3d

All the Robodrills that I own take BT30.
Your search may be simpler than you thought.
I am not aware of any Cat30 tool holders or spindles.

That's always been my understanding, too. The CAT designation only applies to 40 and 50 taper toolholders. The 30s are either BT 30 or NMTB 30. I think you'll find that any 30 taper holder will work...

Originally Posted by 3t3d

All the Robodrills that I own take BT30.
Your search may be simpler than you thought.
I am not aware of any Cat30 tool holders or spindles.
I could be wrong, I have lead a sheltered life.

THAT makes sense! And it's probably why we can't find a holder.

I will go to his shop and look. I know the difference between BT and CAT flanges just from looking at them from 20 feet away.

An NMTB30 cannot be used in a Robodril, no way. It has no way to clamp the tool nor hold in the turret.

Originally Posted by LKeithR

That's always been my understanding, too. The CAT designation only applies to 40 and 50 taper toolholders. The 30s are either BT 30 or NMTB 30. I think you'll find that any 30 taper holder will work...

I have a CAT30 holder, had to modify it to fit a BT30 spindle by making the drive dog slots symmetrical. That said, I've never seen a CAT30 Robodrill.

QB