5 x Diameter endmills

[Leigh @ Kodiak]

We are looking at a job where we are going to need to rough out some DEEP pockets in QT100 steel. We are going to need to use a tool that 1"-1.25" in diameter, and 5" long.

 

I'm just wondering if anybody has experience with tooling similar to this, and what tools they would recommend. In particular, I am wondering about the Sandvik 390 tools with integrated dampening.

 

Any experience that anybody can share is greatly appreciated!

[Mr. M]

Seco has some that the heads screw on a carbide shaft and go to 10x dia.

[cobra95kev]

Iscar does too. They are called Multi-masters.

I haven't had a chance to use them yet though.

[strabe]

I have personally used Sandvik's "Anti-Vibe" boring bars and they're phenomenal. I don't know if they're called 390 though. No chatter at all at 10 X dia.

[Mike S @ S4A]

I've used the Iscar Multimaster in 1/2" diameter only....finishing full radii on pockets 3 1/2" deep in A36 HRS... interesting system...no idea what they're like in larger diameters

[Colin Gilchrist]

Basically you want a tool that has short flutes and a stout rigid shaft...

 

Sandvik and Ingersoll both carry good tools for this.

 

Do not try and use any type of endmill with full length flutes...

[RObert TImby]

Racerx

 

I just got done making some two dies that are 64.0 x 36.0 x 12.8 deep with a .750 corner radius, I was using Ingersoll 1.0 diam head with a .950 carbide shaft that was grinded down from 1.0 and three adapters to give me the length. they worked great!!! When westtec was in town i went up there to see what the cutting guys had nobody would touch me except Ingersoll and Sandvik. I talked to Sandvik they did not have anything that small but they do make a good product with the captos. I went with Ingersoll cuz of the size. to give you a head ups both are $$$.

 

hope it helps