Boring

• Grand Valley has 50 years experience in machining inside diameters. We can bore up to 84" inside diameter. We can hone up to 34" inside diameter.
• Grand Valley has developed proprietary tooling which allows us to bore 40 feet in one direction. We can bore your parts up to 70 feet in length.
• Our deep hole facility is located in Pleasantville, PA approximately 4 miles away from the main facility. This facility was designed around parts with bores ranging from 9" to 26" and in lengths up to 54'.
• Pleasantville also has quick turnaround line boring capacity to service your needs. In addition to boring, we have two engine lathes (36" over the cross slide X 40 feet in length) and crane capacity up to 40,000 lbs.

If it looks like it doesn't fit, call us with your sizes.
Maybe we can help!!

Grand Valley has developed proficiency in several different techniques that facilitate machining of your parts

• Line Boring involves rotating the cutting tool (which is located on a bar between bearings) while the piece is stationary. It allows work on bores that do not lend themselves to rotation. It permits bore work which does not require 100% cleanup
• Push Boring is the most common form of stock removal from inside diameters. Grand Valley has developed proprietary tooling which allows us to remove large amounts of material in a single pass, or to bore up to 40 feet in one direction. Push Boring is typically used to produce straight bore in line with the O. D.
• Pull Boring is a technique which pilots off the rough bore. Pull boring can be used in smaller diameters to remove material quickly with good surface finish. Pull boring will follow the existing hole.

• Bored Ingot and Electrode molds produce higher yields than "as cast" molds. They are easier to strip and require little or no surface preparation