DeHoff Deep Hole Drilling Machines

Unsurpassed quality, accuracy, and durability

Since 1956, DeHoff has contributed significant advances to deep hole drilling technology, and we have grown to become one of the largest manufacturers of high-performance drilling machines in the world!

DeHoff gundrilling and BTA/STS machines feature a durable, heavy-duty design that delivers unmatched performance. Each machine incorporates a cast iron drill head base with hardened and ground steel box ways, plus hand-scraped and fitted mating components (versus linear guide ways and milled surfaces). This results in superior vibration dampening and extended tool life.

All DeHoff machines are built-to-order by Kays Engineering in our Marshall, Missouri facility. They feature standard elements like high-pressure coolant systems, computer controls, and full machine enclosures, but can also be customized to suit your specific high-volume production application. We design and manufacture all sub-assemblies in-house to ensure superior machine quality, accuracy, and durability that lasts for decades.

DeHoff gun drill

10 Series

High-volume production gundrilling

20 Series

High-torque gundrilling applications


Gundrilling complex hole patterns

BTA deep hole drilling machine


Versatile drilling machines for large diameter holes

Gun Barrel

The complete gun barrel manufacturing system

Custom Machines

Unique solutions to meet your production requirements

Gundrilling machine

Features & Options

Learn more about the DeHoff coolant system, machine control, fixturing options, and high-torque gearbox

Which machine is right for your application?

Call us! We're here to help you.

Ed Kays, President
660.886.9929 (ext. 116)