YT29A Heavy-Duty Air Leg Rock Drill (Tunneling Expert)
The YT29A Air-Leg Rock Drill is the most powerful pneumatic machine in the YT series, specifically designed for the most demanding Tunneling and Mining operations.
With superior impact energy (≥78J), it excels in drilling horizontal and inclined blastholes in hard and super-hard rock. When paired with our FT160 or FT170 Air-Legs, it offers unmatched efficiency for railway, highway, and hydro-power construction.
Key Features & Advantages
● Superior Power (≥78J): Delivers significantly higher impact energy than YT28, ensuring faster penetration in hard rock.
● Optimized for Tunneling: The grouped control mechanism allows for quick start-up and responsive handling, ideal for roadway excavation.
● High Torque: Strong rotation torque prevents jamming in deep holes or complex rock formations.
● Robust Durability: Heavy-duty body (27kg) built for long service life in harsh mining environments.
Technical Specifications (Model YT29A)
YT29A Machine Specs
Weight
27
kg
Size (L×W×H)
659 x 248 x 205
mm
Cylinder Diameter
82
mm
Working Air Pressure
0.40 ~ 0.63
Mpa
Impact Energy
≥ 78 (@0.63Mpa)
J
Air Consumption
≤ 88 (@0.63Mpa)
L/s
Impact Frequency
≥ 39 (@0.63Mpa)
Hz
Torque
≥ 20 (@0.63Mpa)
N·m
Drilling Diameter
34 ~ 45
mm
Max. Drilling Depth
5
m
Shank Size
H22 x 108±1
mm
Compatible Air-Legs
Weight
Feed Length
FT160A (Standard)
17 kg
1338 mm
FT160B (Short)
16 kg
1098 mm
FT160C (Long)
18 kg
1490 mm
FT170
18 kg
1338 mm
💡 Tunneling Solution: Drill & Expand
Use the powerful YT29A to drill deep blast holes rapidly, then apply our High-Range Mortar for controlled rock removal: