Rick Rowlands
Titanium
- Joined
- Jan 8, 2005
- Location
- Youngstown, Ohio
On my 10" rolling mill the mill couplings are attached to the cast iron rolls with a tapered fit. The Big end of the taper is a little over 4" dia., the taper is about 4.25" long and the small end is only about a tenth of an inch smaller in diameter. There are no setscrews, keys, or anything else holding the couplings in place. I can't figure out how it holds together.
One of the couplings has the tapered end of a roll broke off flush in it. I tried pressing that roll end out of the coupling with about 75 tons of force and it would not budge. I'm now whittling it out by drilling out as much metal as possible and hoping it finally frees up. The roll end is cast iron and the coupling is steel.
I would just like to know how common this type of tapered fit is, and how it holds so well.
One of the couplings has the tapered end of a roll broke off flush in it. I tried pressing that roll end out of the coupling with about 75 tons of force and it would not budge. I'm now whittling it out by drilling out as much metal as possible and hoping it finally frees up. The roll end is cast iron and the coupling is steel.
I would just like to know how common this type of tapered fit is, and how it holds so well.