7/8-20 & 1.5-16 threaded arbors came with my new Clausing 8520 - what are they for?

[phastbus]

Hello, this is my 1st post, hopefully it's in the correct category
.
I just picked up a Clausing 8520, a machine I've been hunting for many years and I'm pretty excited. It came with two arbors I can't identify, both have 7/8-20 threads and one has an adapter with 1.5-16 threads. I thought maybe they were for a drill chuck, but I don't see any chucks that use those large of threads. Any ideas what they were/are for?

 

[rat_stomper]

Probably for a boring head or something like that.

 

[dalmatiangirl61]

Are those tapered? Morse or B&S? If B&S #9, I might have a use for the smaller one on a boring head, assuming you don't need it.

 

[phastbus]

Are those tapered? Morse or B&S? If B&S #9, I might have a use for the smaller one on a boring head, assuming you don't need it.

MT2

 

[phastbus]

Probably for a boring head or something like that.

Thank you, makes sense. The previous owner kept one of his dads other small mills and he kept all the tooling that wasn't MT2, he probably pulled the heads off.

 

[dalmatiangirl61]

MT2

Not the droid parts I'm looking for. Thank you.

 

[Dan from Oakland]

Yup- boring head shanks.

 

[Doozer]

I have an 8520.
Tip if you are interested...
I bought a 5" Kurt for my mill.
It is not too big.
It is perfect sized.
One thing I did though,
was to mill off the coolant trough
on the back of the vise. This way
the back of the vise is flush with
the back of the table. Use the front
table tee slot to bolt down the vise.
The Y travel is 4.9" and the 5" kurt
opening makes good use of all this
travel. Most people say 4" vise is
the max, but from personal experience
the 5" Kurt is really a good fit.

---Doozer