Circle Boring & Machine

Precision Milling & Boring

Home Circle Boring has the capability and experience to successfully complete all of your large part milling and boring projects.  We machine parts weighing up to 40,000 pounds by more than 20 feet long and over 9 feet tall.  We also machine parts that you can easily hold in the palm of your hand.
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Bolster Plates
Die Sets
Forging Industry
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Gear Cases The mold base shown in process to the right was machined from a solid forging.  The forging was a 6 feet square by 5 feet thick.  The tapered bore around the center stem was circular interpolated on one of our large CNC mills. Other machining was also done down at the bottom of that bore. Very few machine shops can handle a milling and boring project of this size and complexity. 

Plate Work
Fastener Industry
R&D Machining
Repair Machining
Facilities

The part being bored on the left was entirely fabricated out of Hastelloy™.  Many extreme machining challenges were met to successfully complete this project.  The bores pictured were 32" diameter and the bore on the right side had another intersecting bore from the top.  There were many other elements of this project that required outstanding milling and boring skills and equipment to complete the project to the needed specifications.

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We are known for the finish bores we achieve on critical parts.  We have been able to help some customers eliminate a honing operation on bearing surfaces with the bore finishes we regularly accomplish.

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