25/16ballhitch1 1/4 shank

This is in a swiss lathe, so I'm flooding with neat oil. I've been using high pressure (around 800psi) on both the turn and cutoff, but I'm considering trying without it. My tools are within .001" of on center.

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1 1/4receiver hitch with2 ball

Now I'm running a job in 304. The inserts I'm using are Iscar CCMT 3-0 PF IC907 for turning, and an Iscar GIP 3.00-0.20 IC908 for cut off. I'm getting like 60 parts before insert failure.

I've read that 304 needs much higher surface speeds than 303, so I've experimented with speeds from 300sfm up to about 650sfm. Doesn't seem to do much if anything for tool life. My feed is probably pretty slow at I think .001ipr turning and .002ipr for cut off, but I have to maintain a minimum of a 32ra surface finish, so I can't push my feed too much. I've thought about going to a .016r insert so I can feed faster and maintain surface finish, but that seemed like more tool pressure, which will likely increase heat issues, which is what's killing the inserts, I think.

2 inch ball 1 1 4 shankheavy duty

So do you guys have any hints you'd pass along about 304? I'm getting really sick of being covered with oil from changing inserts every 40 minutes or so.

So I turn 303 all day every day. Make thousands of parts a month out of it. I have a speed and feed that I know will give me a surface finish of around 24Ra, makes chips manageable, and will last for around a thousand parts with the inserts I use.