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Used Boring Mills For Sale

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Please view the regularly updated inventory of used Boring Mills below. Inventory includes a variety of brands, sizes, and capacities. Below is our up to date selection of used Boring Mills. Our brands include but are not limited to: Giddings & Lewis, Toshiba, DeVlieg and much more. If you don’t find the Boring Mills you are looking for, please contact us!








The process of milling uses a rotary cutter to remove the material in place. There are two main classes of the mill process. There is peripheral milling and face milling. Peripheral milling is when the cutting is done along the circumference of the actual cutter. It is primarily used when cutting deep slots and gear teeth. Face milling is when the cutting is primarily at the corners of the milling cutter. It is primarily used to cut flat surfaces into the material.

CNC milling machines are used for cutting, contouring, reaming, threading, planning, drilling, turning, grinding and diesinking.  They can cut into various materials but are mainly used for cutting metal. A great example what mills help create are car engine blocks!

Boring mill machines are used to bore holes into the material being processed.  There are vertical and horizontal boring mills. The horizontal boring mills have the material lay on the table while the boring bar rotates around a horizontal axis.  (Similar to Horizontal Machining Centers) The vertical boring mills have the material rotate around a vertical axis. The boring tool does not turn while performing the cut.  There are also horizontal boring mills that has its spindle work parallel to the ground. Boring mills are used for smoothing or roughening out the inside of a cut hole.

Should I choose a vertical or horizontal boring mill?  Horizontal boring mills typically are more versatile due to the fact that you are not limited in the workpiece size.  Vertical boring mills are more limited in that aspect. However, they are both able to run at similar production capacities.  It really depends on the type of workpiece/job to be performed.

What are some benefits/uses of using boring mills?

  • They can minimize tool deflection!  The spindle can be kept short to prevent deflection of the tool due to it advancing from the headstock. 
  • Boring mills are very durable.  With proper maintenance, they can last decades.  You will see the machine retain its value over the years.
  • These machines can handle very large workpieces.  They can mount larger workpieces than a horizontal milling machine.
  • They can enlarge holes in the workpieces that are not suited for lasers or EDM’s.
  • They smooth out the interior surfaces of holes.
  • Versatile.
  • Great investment that ends up paying for itself over time.

Revelation Machinery can always help you find what you need!  If you have any questions about Boring Mills or need to find a specific brand/type, please feel free to contact us!  If you need to sell your used Boring Mills, do so here.