Rail Path and Machinery Pad Milling or Machining
- Milling equipment is used to machine the Rail Path and Machinery Pads on new draglines and for major rebuilds on the same type of equipment.
- Milling equipment runs on rails to machine circular paths for the swing rack and roller circle on the dragline.
- Surface finish must be maintained within .0005 inch/inch with a flatness requirement of .020 inch over a circle up to 59 feet in diameter. The finished circular pad may be as much as 75 inches in width.