Shaybuilder
Cast Iron
- Joined
- Sep 24, 2006
- Location
- Nevada
I just purchased a new to me copy of a Deckel mill in like new condition with less than 100 hours on it. It has all the horizontal arbors except the 1" diameter which I use most. The end of the arbor needs to be ground to 20MM for the sleeve that rides in the needle bearing support and a 18MM thread for the nut to retain the sleeve,cutter & spacers. The arbor is a NT40 taper. I am wondering if I buy a good used arbor if it is case hardened then I could grind through the case hardening to the sleeve diameter and be able to cut the threads. If it is hardened through then I am out of luck on cutting the threads and will have to make a new arbor. If I make a new arbor what is the best material to use? I am concerned with it warping when I cut the keyway. Would making a arbor out of 4140 work?