The air leg drill combines a pneumatic percussion tool with a separate leg that supports forward feed. Compressed air drives the impact mechanism, and the leg keeps the bit loaded as drilling advances. Rotation changes the cutting position between blows. A connected water circuit carries loosened rock out of the hole during wet work. The YT28 option has a defined drill-steel connection and operating conditions for the site air and water supplies. It serves tunnel faces and underground development where the crew repositions the drill for each planned hole. The tool, support and hoses work together as the drilling package.
Product Parameters
|
Parameter |
Value |
|
Model |
YT28 |
|
Weight |
28 kg |
|
Overall dimensions |
661×248×202 mm |
|
Cylinder / piston stroke |
80 mm / 60 mm |
|
Impact energy |
≥75.5 J |
|
Impact frequency |
≥36.7 Hz |
|
Air consumption |
≤80 L/s |
|
Working air pressure |
0.6 MPa |
|
Working water pressure |
0.3 MPa |
|
Drilling diameter |
34-42 mm |
|
Recommended depth |
5 m |
|
Shank |
22×108 mm |
Main Applications
• The air leg drill drills face holes during underground mine development.
• Tunnel headings use a supported pneumatic assembly that can be moved between hole positions.
• Railway, highway and water-conservancy rock work can use the selected model and drill steel.
Why choose us
We supply air leg drill within a pneumatic range that includes YT28,YT23,YT24,YT27 and YT29A. This lets buyers compare air-leg models through one supplier. The drill, leg, lubricator, hoses and wear parts can be discussed together before ordering. An agreed accessory list also gives the receiving crew a clear record of the package and helps maintenance staff identify the parts required for their chosen model.
For a replacement tool, it is useful to identify the existing air leg and drill steel so the new package can be checked against equipment already on site.
FAQ
Q: Can the YT28 option drill wet holes?
A: Yes. Its linked air-and-water circuit supplies flushing water during drilling.
Q: Can compressor outlet pressure alone confirm suitability?
A: No. Pressure and available flow must also be checked at the drill.
Q: Can accessories be supplied with the tool?
A: Yes. The leg, lubricator, hoses and drill steel can be agreed with the order.
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