Wow. I'm glad you're still alive after running that chuck at 2500. Seriously man, not only is that dangerous, but the LC40 is one of the most powerful CNC turning centers Okuma ever made. If you're going to be turning small parts the collet chuck is the only option. You had a physics lesson that you'll not soon forget, always check your chuck pressure.
If you're going to be parting things off from round stock you'll want spindle liners for the appropriate material diameters as well, our you'll experience vibration and compromise work holding capabilities or worse...
Be careful, set your G50, use the tool path graphics if it has them, drive slow in single block, watch your Distance To Go, be careful. And be careful too.