Technical Specifications
| Model | FT160BD | FT160BC | FT160A | FT140B | FT140BD | FT100 |
| Length | 1400 mm | 1800 mm | 1668 mm | 1687 mm | 1400 mm | 1312 mm |
| Propelling Stroke | 965 mm | 1365 mm | 1338 mm | 1250 mm | 965 mm | 810 mm |
| Cylinder Bore | 65 mm | 65 mm | 65 mm | 60 mm | 60 mm | 52 mm |
| Weight | ≈14.4 kg | ≈16.9 kg | 17 kg | ≈15.6 kg | ≈13.9 kg | ≈11 kg |
Applications of Rock Drill Air Leg
Mining
Used with air-leg rock drills for tunneling, blastholes, and anchor hole drilling.
Tunneling
Provides stable support for tunnel face drilling, grouting, and support hole construction.
Quarrying
Reliable for blasthole drilling and secondary rock breaking in quarry operations.
Infrastructure
Suitable for slope anchoring, subgrade drilling, and foundation support projects.
Rescue
Applied in obstacle removal, concrete breaking, and narrow-space maintenance work.
Competitive Advantage
Thickened Tube, Longer Service Life
Made from thickened high-strength aluminum alloy, the air leg offers better compressive strength, bending resistance, and a much longer service life than standard thin-wall models.
Reliable Sealing, Stable Performance
The high-quality sealing system helps prevent air leakage, maintain stable thrust, and ensure smooth operation in dusty, high-frequency underground working conditions.
Ergonomic & Labor-Saving
The optimized handle and adjustable structure improve operating comfort, reduce worker fatigue, and support more stable drilling in horizontal, vertical, and angled applications.
Precision Manufacturing
High-precision machining ensures smooth telescopic movement, accurate control, and reliable adjustment, while the anti-corrosion surface improves durability in harsh environments.
Wide Compatibility
Designed for direct replacement, the air leg offers high interchangeability with original parts and fits a wide range of mainstream pneumatic rock drills.
Flexible Customization
Custom length, handle material, tube color, logo, and packaging options are available to meet different working conditions and branding requirements.
Rock Drill Air Leg Component Disassembly Diagram
| No. | English Name | No. | English Name | No. | English Name |
| 1 | Outer pipe | 12 | Dust seal set | 23 | Pad |
| 2 | flexible tube weldment | 13 | Air pipe rubber pad | 24 | Lock nut |
| 3 | Air pipe | 14 | Lock nut | 25 | Yx-seal ring |
| 4 | Frame pad | 15 | seal set | 26 | O-ring |
| 5 | Guide sleeve | 16 | Support ring | 27 | O-ring |
| 6 | Piston | 17 | Handle | 28 | O-ring |
| 7 | Lower tube socket | 18 | Small hexagonal head bolt | 29 | Spring pad |
| 8 | Frame | 19 | Foot | 30 | Spring pad |
| 9 | Locking ring | 20 | Center | 31 | Small hexagonal head bolt |
| 10 | 21 | Lock sleeve | 32 | hexagon head nut flat | |
| 11 | Rubber ring | 22 | Rubber pad |