This is a climax bore welder - BW1000. It feeds automatically on a spiral and has a 1/8" pitch "lead screw". I think the range of holes is 7/8" up to 12". The smallest holes I have ever done were about 1.25" diameter and 1.5" deep. The limiting factor for larger holes is the rotation speed. I think there is a reduction add on you can get. The nicest part about this system is the integration with the climax line boring. You put your drive bar in the holes to be repaired. Slide cones over either end of the bar and into the holes for alignment. Weld on the bearings. Slide off the cones and remove the bar. Then the bore welder mounts to the bearings that are welded on. They are in line with the holes and ready for welding. After welding, you slide your bar backing through the bearings and start machining.
