Circle Boring & Machine

Precision Milling, Boring and Turning

Milling And Boring

Large Part Turning

Bolster Plates

Die Sets

Forging Industry

Machine Tool

Gear Cases

Flat Plate Work

Fastener Industry

R&D Machining 

Repair Machining


Contact Us

Circle Boring & Machine Company was founded in 1960 and was built on our capabilities with precision boring and milling.  Our CNC milling, boring and turning capacity is today matched by few  in the industry.  The expertise we have in these areas of machining has helped our customers turn their innovations into realities.

We can machine parts over 20 feet long, weighing up to 40,000 pounds.  We also machine parts that fit in the palm of your hand.  Our 25,000 sq. ft. building has six bridge cranes in four separate bays.  We are more than just a typical job shop.

We have recently made major investments in our turning departments.  Our CNC vertical lathes can turn parts up to 68 inch diameter by 60 inches high. Be sure to check out our Large Part Turning page that details the types of turning work that we do.

                      Markets Served and Services Offered:

  • Stamping industry (die sets and bolsters)
  • Forging & metalworking (rams, sow blocks, side rails)
  • Mining and off-road equipment
  • Renewable energy
  • Machine tool
  • Special machine builders
  • Automation / Assembly (indexing dials, machine bases & frames)
  • Transmission gear cases
  • Gear blanks
  • Ring turning
  • Flat plate work
  • Research & development machining
  • Printing press side frames
  • Blanchard grinding to 84"
  • Repair machining

Please browse through the links to the left to see examples of the many types of parts we machine and what services we can supply to your company.

The large gear blank shown to the left was machined in our CNC turning department.  Our equipment and our experienced operators combine to give you an excellent part at a good price.

Check out Our Turning Department


Circle Boring & Machine Co., Inc

3161 Forest View Road

Rockford, IL  61109


Phone (815) 398-4150

Fax (815) 387-0062

 Sales Manager: Gary French  (


                                       2012 Circle Boring & Machine Co., Inc.