I'm trying to bore 2 journals in a cast iron part; the journals are 1 3/4" but badly worn; I intend to bore them oversize and sleeve using Aluminium Bronze to restore the journals to their nominal size. I have a boring head for the mill that takes a 5/8" boring bar but the problem is the lower journal is 185mm below the top surface of the casting. I want to bore both journals in 1 setup to maintain concentricity but I can't find boring bars anywhere near this length. I can make up a bar from 5/8" dia. bar, but I'm wondering if it will be too flexible. Anyone have experience using such a long boring bar of a similar diameter? Martin
- posted
18 years ago