Our History

Cobore has over 25 years of experience in deephole machining. After being part of National K Works, Inc., Cobore was established as an independent company in 2005. We take full advantage of the innovative machining techniques and equipment developed through our engineering and carry on a tradition of high-quality, sophisticated manufacturing processes.

Providing drilled holes with tight positional tolerances facilitates the amount of subsequent machine work being performed by the customer. This means that a part with a tightly placed drilled hole eliminates the requirement to purchase grossly oversized material and the associated complex machining operations to machine the outer diameter's position relative to the bore.