8 State-of-the-Art CNC Grinding Machines
8 Manual Grinding Machines
Over 50 Years of Precision Grinding Experience

Whether you need one part or thousands,
Cowan gets the job done right and delivered on time.

• O.D. & I.D. Grinding
• O.D. & I.D. Taper Grinding
• O.D. Profile Grinding
• Diamond Roll Form Grinding
• Hard Chrome Grinding

Cowan Precision Grinding has built a reputation
as the “go-to guys” for challenging grinding jobs.

O.D. Grinding to 12" diameter x 42" in length
I.D. Grinding from .375" to 12" diameter x 8" deep
Diameters and Roundness within ±.00005”

Precision grinding done right,
and delivered on time since 1968.

Precision O.D., I.D., Taper & Profile Grinding

"Don't buy your material twice.  Cowan gets the job done right the first time."

When Frank Cowan started Cowan Precision Grinding in 1968 in Burbank, California, he had a 1956 Cincinnati Universal Grinder and a plan to offer the best possible precision grinding service to the growing Southern California aerospace industry. From these humble beginnings, Cowan has grown to become a top supplier for a wide variety of precision grinding services.  Read More...

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Our Equipment

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Our Capabilities

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Our Approvals

Cowan is ISO 9001:2015 & AS9100D Compliant



"Expert precision grinding delivered on time.  Every time."

Call us at (818) 361-3512