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What is Deep Hole Drilling?

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An overview of the feature-rich UNE12-2-750-CR from UNISIG. Its two spindles are capable of precision gundrilling to 12mm in diameter and 750mm in depth -- at 12,000 rpm, adding a great deal of productivity within a compact footprint. This fully enclosed machine boasts over 2,000 psi coolant pressure with a contained chip collection system and touchscreen control panel. Counter-rotation of cylindrical workpieces ensures improved hole straightness. UNISIG builds this gundrilling machine to be automation-ready, and frequently integrates robots with its products.
Fully Automated Barrel Cell
Expertly automated for continuous, synchronous production. The UNI gundrills 4 parts at once, while 2 gundrilled parts are precision reamed and 2 parts receive the final step of button rifling.
For rapid parts gundrilling, whether for the firearms industry, marine industry, or other manufacturing industry, check out this overview of our UNISIG 4-Spindle Gundrilling Cell with flexible automatio

The next evolution of automation, this UNISIG UNE6-2i-750-CR Gundrilling Machine is optimized with more advanced features to boost the dual spindles up-time, producing more parts, faster, increasing throughput. In-machine automation …

UNISIG B500-4M BTA drilling machine features start with a massive total spindle power of 130 HP [100KW], facilitating drilling up to 5 inches [127mm] in diameter and 13 feet [4M] deep.
UNX-CP machines from UNISIG are designed to meet the challenges of off-center holes with extreme depth to diameter ratios. Cartesian and Polar positioning [CP] are combined with advanced motion control to achieve the highest accuracy in small diameter deep hole drilling. Programmable off-center continuous counter-rotation improves hole concentricity, even at depth to diameter ratios of 375:1.
Increased precision and production - our UNISIG UNE6-2i-750-CR gundrilling machine featuring in-machine automation with a dual-gripper for rapid part exchange. Reduce the time spindles are not drilling with the dual-gripper head, robot makes fewer trips back and forth to retrieve parts and exchanges parts while other spindle drills. The dual-gripper opens possibilities for dual layer pallets, increased run time, dual workpiece program cycles, and workpiece lengths up to 300mm (12in) without the need for gripper changeover.
For small diameter gundrilling, our UNE6-2i machine allows manufacturers to maintain tolerances while taking advantage of two independent spindles. Designed for what's typically medical applications, parts can be drilled easily from each end, for accuracy without sacrificing productivity or floor space.
gundrill grinder
The complete gundrill grinding solution to re-sharpen your gundrills consists of the grinder, a universal holder for gundrill tools, a digital camera, measuring software, a computer and monitor. The system is base plate mounted for tabletop or cart use.
Before UNISIG, fully automated barrel production was only possible for the largest firearm OEMs. Now, UNISIG has opened the door for small to mid-sized as well as very large manufacturers by developing scalable barrel production cells, designed for productivity and reliability.
Before UNISIG, fully automated barrel production was only possible for the largest firearm OEMs. Now, UNISIG has opened the door for small to mid-sized as well as very large manufacturers by developing scalable barrel production cells, designed for productivity and reliability.
Seamless automation brings together multi-spindle gundrilling, reaming, and rifling machines for unprecedented barrel manufacturing capabilities, in the most advanced cell of its kind.