Tier 2process
Deep Hole Gun Drilling for Aerospace & Defense
Gun drilling creates deep, straight holes with exceptional straightness and surface finish. Critical for aerospace hydraulic components, landing gear, and fuel system parts requiring holes with length-to-diameter ratios exceeding 20:1.
±0.002" per 12"
Tolerances
32-63 Ra
Surface Finish
0+
Qualified Shops
Certified
AS9100
Why Aerospace Requires Gun Drilling
- ✓Landing gear require deep, precise bores
- ✓Hydraulic systems need straight fluid passages
- ✓Fuel system tubes require consistent ID
- ✓Actuator bodies have deep internal features
- ✓Cannot be achieved with standard drilling
Typical Applications
→Landing gear main struts
→Hydraulic cylinders
→Fuel rails and manifolds
→Actuator bodies
→Heat exchanger tubes
→Barrel and tube assemblies
Materials Commonly Machined
4340 steel300M steelTitaniumAluminumStainless steelInconel
Technical Considerations
- •Depths up to 100x diameter possible
- •High-pressure coolant through tool (1000+ PSI)
- •Single-flute drill with guide pad
- •BTA system for larger diameters
Tolerances Achievable
- Position
- ±0.002" per 12"
- Surface Finish
- 32-63 Ra
- General
- ±0.001" diameter
Related Capabilities
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Find Qualified ShopsFrequently Asked Questions
What is Gun Drilling?
Gun drilling creates deep, straight holes with exceptional straightness and surface finish. Critical for aerospace hydraulic components, landing gear, and fuel system parts requiring holes with length-to-diameter ratios exceeding 20:1.
Why is Gun Drilling important for aerospace?
Landing gear require deep, precise bores
What tolerances can be achieved?
±0.002" per 12"