Techman offers the latest in CNC Gun Drilling technology. New to Techman is precision deep hole Gun Drilling with Schoeller Bleckmann Oilfield Gun Drilling Technology

Techman Engineering offers industry-leading gun drilling capabilities. Using technology developed within the Schoeller-Bleckmann Oilfield Equipment group, Techman is able to monitor and influence the trajectory of the tool while drilling. This allows us to drill deeper than is typically possible, and with greater accuracy than our competitors.

Gun drilling is a process used to produce small diameter holes at a high depth-to-diameter ratio, beyond what is capable using more conventional tooling. The process can be used in a variety of applications: for example oil and gas components, mold/diemaking, and most obviously gun barrels from which the process gets its name.

A gun drill is a specialised tool with unique geometry, which has been refined to make the most of modern machinery and high pressure coolant delivery to evacuate chips. Paired with specialised machines the tool is able to perform in extremely deep holes, even in hard and exotic materials.

Techman uses state-of-the-art equipment with dedicated machine tools which puts us at the leading edge of gun drilling capabilities. Working with high depth-to-diameter ratios can introduce unique problems and, as customer demands get ever greater, a frequent issue is preventing the gun drilled hole from wandering off its target path. This is particularly important when two holes must intersect as both holes must be drilled accurately to ensure they meet up.

To overcome this problem, Techman Engineering uses Schoeller-Bleckmann developed technology. We have the ability to track the path of the drill whilst drilling is in progress. This allows the hole to be drilled without any deviations.

The advantage of this technology means Techman is able to exceed industry norms of depth-to-diameter ratios in the region of 100:1 and instead produce holes up to and in excess of 500:1, while at the same time outperforming our competitors in terms of hole straightness and accuracy.

Techman’s gun drilling process can be offered as a standalone service, or combined with our much wider offering of machining capabilities and other special processes we can manufacture complete components to your specification.

Techman Capabilities
• Gun drilling from 3mm to 32mm diameter
• Depths up to 4.5m
• Depth-to-diameter ratio in excess of 500:1
• Work holding of cylindrical parts up to 315mm diameter
• Available as a standalone service or part of a turnkey product