A few weeks back I picked up an old Delta Rockwell drill press. The only ID number on it is 118-1869. It is a 240/480 3-phase drill press weighing about 9900 pounds (ok so maybe more like 400). The motor pulley has 4 sizes and the quill has five. So two questions:
1) How old is it?
2) I'm used to both pulleys having the same number of sizes. What gives with the different counts and which ones am I allowed/supposed to use?
Once I have the VFD and control box installed and it is running, I'll post pics.