Product Introduction
The YT23(7655) Air Leg Rock Drill delivers powerful performance and high efficiency. It features an integrated air-water interlock system for dust suppression, a rapid-extension air leg, and adjustable air pressure controls. The control handles are centrally arranged to minimize operator fatigue. A directional muffler effectively reduces noise levels, thereby improving the working environment. The YT23(7655) Air Leg Rock Drill is ideally suited for applications in mining, tunneling, water conservancy projects, and infrastructure construction.
Product Attributes
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Weight |
24 kg |
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Overall Length |
668 mm |
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Operating Air Pressure |
0.63 MPa |
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Cylinder Diameter |
70 mm |
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Piston Stroke |
70 mm |
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Impact Frequency |
≥28 Hz |
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Impact Energy |
≥45 J |
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Air Consumption |
≤38 L/s |
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Noise Level |
≤112 dB(A) |
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Operating Water Pressure |
0.2–0.3 MPa |
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Air Hose Inner Diameter |
19 mm |
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Water Hose Inner Diameter |
13 mm |
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Drilling Diameter |
34–42 mm |
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Max. Drilling Depth |
5 m |
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Shank Rod Specification |
B22×108 mm |
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FY200A Oil Lubricator |
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Weight |
1.2 kg |
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Oil Capacity |
0.2 L |
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Air Leg |
FT160A Type |
FT160B Type |
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Weight |
17 kg |
16 kg |
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Extended Length |
3006 mm |
2526 mm |
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Retracted Length |
1668 mm |
1428 mm |
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Feed Length |
1338 mm |
1098 mm |
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Axial Thrust |
2000 N |
2000 N |
Product Features
High Parts Interchangeability
The components of this model can be used with models. This means you do not need to keep spare parts for it. This helps reduce the pressure of keeping a lot of inventory.
Cold-Start Performance
The valve assembly has been designed to work well in cold temperatures. It can start reliably at -20°C. This makes it suitable for use in altitude and cold mining areas.
Low Air Consumption per Meter
We tested this model in the field. It uses 1.2 cubic meters of air per meter drilled. This is 8% less than models, in the same class. It works well with air compressors that do not move a lot of air.
Extended Maintenance Intervals
The piston and cylinder are made from alloys that resist wear. Under conditions you do not need to overhaul it until you have drilled 5,000 meters. This means you have to shut it down for maintenance often.
Key Points for the Operation and Maintenance of the YT23 (7655) Air-Leg Rock Drill
Maintain Lubrication
When used in conjunction with an FY200 oiler, the machine consumes approximately 2–3 kilograms of oil per shift. It is absolutely critical-never allow the machine to run dry without lubrication.
Maintain Stable Air Pressure
The optimal operating air pressure range is between 0.4 and 0.63 MPa. If the impact force feels off, use the intake pressure regulator to make fine adjustments.
Prevent Silencer Blockage
Periodically clear dust and debris from the silencer. If exhaust flow is restricted-creating excessive back pressure-the machine's impact force will be significantly diminished.
Monitor the Water Needle
The water needle (part of the air-water linkage system) is a consumable component. Inspect it every two weeks or so; if you find it is clogged or broken, replace it immediately.
Protect the Air Leg
Wipe down the telescopic rod after each use. Never retract the rod while it is coated in mud or sand, as this will quickly abrade and destroy the internal seals.
Purge Fluid Before Shutting Down
Once work is complete, shut off the water supply first, then let the machine run in idle mode for about 10 seconds. This expels any residual water from the machine head; otherwise, moisture left overnight will lead to internal rusting.
Our Factory
Our facility is equipped with key processing machinery-including precision horizontal machining centers, CNC thread grinding machines, and versatile controlled-atmosphere heat treatment furnaces-as well as a Coordinate Measuring Machine (CMM) and a comprehensive performance test bench for rock drills. This ensures the utmost precision in machining and the highest quality in heat treatment for all core components, ranging from cylinder blocks and pistons to valve assemblies. Furthermore, every finished unit undergoes rigorous testing-measuring parameters such as impact energy and air consumption-before leaving the factory, with all data fully traceable.
Our Certification
FAQ
Q: What are its drilling capabilities?
A: It drills holes 34–42 mm in diameter and up to 5 m deep, suitable for horizontal, inclined, and upward anchor-hole drilling.
Q: Does the integrated air-water linkage system operate automatically?
A: Yes. Water supply is automatically initiated when the air is turned on and automatically shut off when the air is turned off; this prevents water wastage and accumulation while effectively suppressing dust.
Q: How effective is the directional muffler?
A: It directs exhaust air rearward, thereby reducing noise levels at the operator's station by approximately 15–20 decibels. Additionally, it prevents exhaust-induced dust dispersion, significantly improving the working environment.
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