I cut 303 on the A20 all the time and the tools last forever. You MUST have another problem. 303ss cuts like brass I have to try to get the chips to NOT break. I think your speed is too slow for a swiss machine.
What oil are you using? Check your tool center height.
A comment to the other replys, on a swiss you can very rarely do a rough and the finish pass or multiple passes due to the stock support, guide bushing, you can only pull the stock back a small amount appx. .800" on that machine.
I love cutting 303ss, the insert edges last all week and I have used many different manufacturers inserts. You should call up your favorite insert rep and have him help you get this running better. I use Sandvik, Iscar, Mitsubishi, NTK, Kennametal, Utilities, ..... |