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YT27 Air-Leg Rock Drill (High-Efficiency Pusher Leg Rock Drill)
Weight: 27 kg
Type: Air-Leg Supported
Impact Energy: ≥ 75.5 J
Application: Mining, Tunneling
Feature: Powerful & Durable
- Technical Specifications
YT27 Air-Leg Rock Drill (High-Efficiency Pusher Leg Rock Drill)
The YT27 Air-Leg Rock Drill stands out as a cutting-edge tool in the realm of rock drilling machinery. Tailored for demanding environments such as railway, highway, and mining operations, this drill offers unparalleled efficiency and precision.
Known for its high-speed performance and robust design, the YT27 is the preferred choice for drilling horizontal and inclined blast holes in medium-hard to hard rock (f=8-18).
In short, the YT27 is a pneumatic pusher-leg rock drill used for highly efficient blast-hole drilling in tunneling, quarrying, and underground mining.
🔍 YT27 vs YT28: Which One to Choose?
While both are industry standards, the YT27 is often favored for projects requiring a stable 27kg drilling platform. The YT27 delivers higher impact frequency and torque, making it excellent for rapid penetration in homogenous hard rock formations compared to the slightly lighter YT28.
Technical Specifications: YT27 Rock Drill
| Parameter | Detailed Data |
|---|---|
| Machine Weight | 27 kg |
| Dimensions (L×W×H) | 659 x 248 x 205 mm |
| Cylinder Bore | 82 mm |
| Impact Energy | ≥ 78J (0.63MPa) | ≥ 69J (0.5MPa) |
| Air Consumption | ≤ 88 L/s (0.63MPa) | ≤ 65 L/s (0.5MPa) |
| Impact Frequency | ≥ 39 Hz (0.63MPa) | ≥ 37 Hz (0.5MPa) |
| Rotation Torque | ≥ 20 N·m (0.63MPa) |
| Working Pressure | 0.40 ~ 0.63 MPa |
| Water Pressure | 0.1 - 0.15 MPa lower than air pressure |
| Optimum Hole Dia. | 34 ~ 45 mm |
| Max Hole Depth | 5 Meters |
| Shank Size (Hex) | H22 x 108 ± 1 mm |
Air-Leg (Pusher Leg) Specifications
| Spec | FT160A | FT160B |
|---|---|---|
| Length (mm) | 1668 | 1428 |
| Stroke (mm) | 1338 | 1098 |
| Weight (kg) | 17 | 16 |
| Spec | FT160C | FT170 |
|---|---|---|
| Length (mm) | 1820 | 1668 |
| Stroke (mm) | 1490 | 1338 |
| Weight (kg) | 18 | 18 |
💡 Eco-Friendly Demolition Solution: After drilling with YT27, achieve noise-free rock breaking with: Silent Cracking Agent (HSCA)
Complete FT160A Pusher Leg Spare Parts & Components
| No. | Part Code | Part Name (English) |
|---|---|---|
| 1 | FT160A-1 | Lock Nut |
| 2 | FT160A-2 | Check Pad |
| 3 | FT160A-3 | Elastic Rubber Pad |
| 4 | FT160A-4 | Anti-Loosening Sleeve |
| 5 | 32X3.1GB1235-76 | O-Ring Seal |
| 6 | 38X3.5GB1235-76 | O-Ring Seal |
| 7 | 45X3.1GB1235-76 | O-Ring Seal |
| 8 | FT160A-16 | Air Pipe Rubber Pad |
| 9 | FT160A-10 | Double YX Seal Ring |
| 10 | FT140-14 | Air Pipe (Inner Tube) |
| 11 | GB5782 M10X40 | Hex Bolt |
| 12 | AM10 GB53-76 | Hex Nut |
| 20 | FT160A-12 | Piston Rod Weldment |
| 21 | FT160A-11 | Outer Tube |
| 22 | FT160A-9 | YX Seal Ring |
| 29 | FT160A-13 | Guide Sleeve |
| 30 | FT140-16A | Dust Cover |
YT27 Rock Drill FAQs & Troubleshooting
Q1: What is the best air pressure for YT27 efficiency?
A: To achieve its peak 78J impact energy, the YT27 requires a stable working pressure of 0.63 MPa (90 PSI). Operating below 0.4 MPa will significantly reduce penetration rates and may cause drill jamming.
Q2: How often should I check the FT160A air leg?
A: We recommend a daily check of the YX seal rings (Ref No. 9 & 22). Any air leakage in the pusher leg will result in inconsistent feed pressure, leading to operator fatigue and uneven boreholes.
Q3: What is the maximum drilling depth for the YT27?
A: When paired with standard H22 tapered drill steels, the YT27 is capable of drilling boreholes up to 5 meters deep in medium-hard to hard rock (f=8 to 18).
Q4: Can the YT27 be used for vertical drilling?
A: The YT27 is primarily optimized for horizontal and inclined drilling using a pusher leg. For vertical upward drilling in mining, we recommend using a specialized stoper rock drill.
Q5: Why is my YT27 impact energy feeling low?
A: First, verify that your FY250 line oiler is filled; lack of lubrication is the #1 cause of power loss. Second, check the valve chest assembly for debris that might be restricting air flow.
Q6: Is it compatible with international spare parts?
A: Yes. The Expandag YT27 is manufactured to global industrial standards, ensuring 100% compatibility with standard Toyo-type and Shenyang-style components worldwide.
