Karl Townsend wrote:

The 16" hydraulic chuck on my Mazak won't make full stroke. So I've spent
eight hours removing and disassembling it. What a job!

Anyway, swarf had gotten between the ram and bore on the chuck and left
faint gouge track marks. These two pieces are hardened and ground to a very
tight fit. Press fit taking it offG. You can easily see the tracks but it
takes the edge of your fingernail to feel them.

How would you take these out? The bore is 6" diameter by 3" deep. I don't
want to be at this forever. Anyway to chuck it up in the lathe and power
polish?

Karl

Karl, there's only one "right" way to do this - hone it out, replate,
hone it out .. very expensive, but that's the only correct way. Or live
with it, of course. Cleaned up, it will last much longer.

GWE