About CJT Koolcarb Inc...


CJT Koolcarb, Inc. manufactures the highest quality cutting tools available in the industry.

The current catalog contains over 3,000 sizes of coolant and non-coolant fed solid carbide/carbide tipped drills, reamers and end mills available as standards with TiN, TiCN and TiAIN coatings.  With the recent purchase of GenHam Industries, CJT Koolcarb has expanded their offering to include PCD (Polycrystalline Diamond) tools. PCD tools are rapidly becoming the standard for precise yet cost-effective cutting of exotic alloys used in aerospace, automotive and medical industries.




In our modern manufacturing facility, we maintain a stock of over 40,000 performance guaranteed solid carbide and carbide tipped drills, reamers and end mills.  Experienced sales engineers are available to discuss and rapidly quote in application specific tool designs tailored to meet your special tool requirements.


As a complete source for all your cutting tool needs, CJT Koolcarb provides in-factory re-sharpening and re-coat services, as well as dedicated customer service to get you the right tool...on time.

Product Selection Guide

Looking for the perfect tool for your upcoming job? Try out our easy-to-use Product Selection Guide, and find the right tool for your needs.

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Download Catalog

The CJT catalog is a great place to start to find out more about our tools. Just download the catalog, and call us!

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Tool Sharpening

CJT Koolcarb has decades of experience restoring your tools and giving them new life. Make your tool new again.

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CJT KOOLCARB Inc. 494 Mission Street Carol Stream, IL 60188 USA • Outside IL Call: 800.323.2299 • Ph: 630.690.5933 • Fx: 630.690.6355 • e-mail: info@cjtkoolcarb.com