CNC Gun Drilling Machine (Deep Hole Drilling)
Comprehensive Deep Hole Portfolio · Configured to Your Application
Full Specifications
Deep Hole Machining Portfolio · Process & Size Range
| Process | Hole Diameter Range | Max Depth | Typical Applications |
|---|---|---|---|
| Single-Spindle Gun Drilling | Ø1.5 – Ø40 mm | Up to 4,000 mm | Moulds, dies (cooling channels), small precision components |
| Multi-Spindle Gun Drilling (2 / 4 / 6 spindle) | Ø2 – Ø40 mm | Up to 2,500 mm | High-volume auto components, injector bodies, fuel rails |
| BTA Deep Hole Drilling | Ø20 – Ø100 mm | Up to 3,000 mm | Hydraulic cylinders, oilfield drillpipe, large bore components |
| Deep Hole Honing | Ø25 – Ø1,000 mm | Up to 4,000 mm | Hydraulic cylinder ID finishing, large tube repair, valve bodies |
| Skiving & Roller Burnishing | Ø50 – Ø600 mm | Up to 4,000 mm | Hydraulic cylinder finishing (single-pass to mirror surface) |
Frequently Asked Questions
What deep hole machining processes does Stallion offer?
The Stallion deep hole portfolio covers five major processes: gun drilling (single, double, four and six spindle configurations), BTA deep hole drilling, deep hole boring, deep hole honing, and deep hole skiving & roller burnishing. Each is offered across a range of bore diameters and depths, and is configured to the customer's specific application.
What's the difference between gun drilling and BTA drilling?
Gun drilling uses a single-flute tool with high-pressure coolant pumped through the tool — best for bore diameters from Ø1.5 to Ø40 mm and the highest depth-to-diameter ratios (up to 100:1). BTA (Boring and Trepanning Association) drilling uses a different tool architecture with external coolant supply and internal chip evacuation — preferred for larger bores (Ø20 to Ø100 mm) and high material-removal-rate applications like hydraulic cylinders and oilfield components.
What is the typical depth-to-diameter ratio achievable on Stallion deep hole platforms?
Stallion gun drilling platforms routinely achieve L/D ratios of 20:1 to 50:1 in production, with specialised configurations reaching 100:1 — well beyond the practical limit of conventional twist drilling (typically 5:1 to 8:1). The combination of rigid bed structure, drill-bar support, high-pressure coolant and CNC depth control delivers straightness and accuracy across the full depth.
Which industries use Stallion deep hole machining platforms?
Mould and die making (cooling channels in moulds and dies), hydraulic and pneumatic cylinder manufacturing, oilfield and gas industry (drillpipe, downhole tools), automotive (engine blocks, injector bodies, fuel rails), aerospace (deep structural bores), and military / defence (gun barrels, weapon components, armoured systems).
Why is the Stallion deep hole machining portfolio superior to competitor offerings?
The Stallion deep hole portfolio spans five process categories from Ø1.5 mm micro-drilling to Ø1000 mm large-bore honing — on platforms built with rigid cast-iron bed structures, AC servo drive, ball-screw motion, drill-bar support assemblies enabling up to 100:1 L/D ratios, high-pressure coolant delivery and full CNC axis control. Critical components including AC servo drives, ball screws, high-pressure coolant systems, precision bearings and CNC controls are sourced from leading international suppliers across Japan, Germany, Taiwan and Europe for maximum quality and long-term bore accuracy.