Uhh... so yeah it was the G50 command... I reset it to 2500 and put the spindle to 1000 - much faster.
But holy hell this thing sounds like an airplane about to take off at even 1500rpm. I don't think I would be comfortable running it much above that! At 2500rpm it lost it's grip on my test piece of stock - I was nervous just standing next to the machine at that speed, it was like a wind tunnel and the coolant spray was actually getting blown towards the chuck by the amount of wind and the dry chips in the machine were getting blown around inside. And my tach showed 2550rpm.
Here's another question (maybe I ought to start a new thread for it)... I was considering getting a collet chuck for this machine since most of the parts I do are smaller than I'd ever need a 12" chuck for. Well, I was digging through the boxes of stuff that came with it and under a bunch of toolholders is a collet chuck! I called the previous owner and he said its the one that came with the machine, but it is missing the drawnut (well, whatever is meant to go on the end of the drawtube and interface with the base of the collet). He also wasn't sure what type of collets it was, except that it wasn't 5C - it was something else. The collet chuck is only stamped "312" on the back, nothing else.
Anyone have any ideas what sort of collet chuck this may be? I can get all the dimensions from it.  |