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Shank Size: H22 × 108 mm
Hole Diameter: 34–42 mm
Maximum Hole Depth: 5 m
Working Air Pressure: 0.63 MPa
Working Water Pressure: 0.3 MPa
Impact Frequency: ≥37 Hz
Air Consumption: ≤81 L/s
Weight: 26 kg
Length: 661 mm
Shank Size: H22 × 108 mm
Hole Diameter: 34–42 mm
Maximum Hole Depth: 5 m
Working Air Pressure: 0.63 MPa
Working Water Pressure: 0.3 MPa
Impact Frequency: ≥37 Hz
Air Consumption: ≤81 L/s
Weight: 26 kg
Length: 661 mm
General Introduction
The YT28 pneumatic air-leg rock drill is a compressed-air-powered drilling machine designed for mining and tunnelling operations.
The YT28 air-leg rock drill is designed for horizontal and inclined blast holes and roof-bolting holes in medium-hard rock (f=8–18). It is widely used in mining, tunnelling, railway and water conservancy projects, and can be paired with FT160BC/FT160BD air legs and an FY200B line oiler.
The YT28 works with H22 × 108 mm tapered drill rods and is suitable for drilling holes from 34 to 42 mm in diameter.
Application
The YT28 air-leg rock drill is designed for drilling horizontal and inclined blast holes in medium-hard rock with a hardness of f=8–18. It is widely used in mining, tunnelling, railway and water conservancy projects, as well as for roof-bolting holes.
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Technical Parameters
Category | Parameter | Specification |
YT28 Rock Drill | Model | YT28 |
Machine Weight | 26 kg | |
Overall Length | 661 mm | |
Drill Rod Shank Size | H22 × 108 mm | |
Borehole Diameter | 34–42 mm | |
Maximum Drilling Depth | 5 m | |
Impact Frequency | ≥37 Hz | |
Air Consumption | ≤81 L/s | |
Working Air Pressure | 0.63 MPa | |
Working Water Pressure | 0.3 MPa | |
Piston Diameter | 80 mm | |
Piston Stroke | 60 mm | |
Capacity | 200 ml | |
FY200B Line Oiler | Weight | 1.02 kg |
Model | FT160BC / FT160BD | |
Air Leg | Weight | 16.9 kg / 14.4 kg |
Length | 1,800 mm / 1,400 mm | |
Feed Length | 1,365 mm / 965 mm |
Product structures and part numbers
YT28 Air-Leg Rock Drill Parts List | |||
Code | Part No. | English Name | Qty |
1 | YT28-1.02 | Inner ratchet | 1 |
2 | YT28-1.03 | Valve chest | 1 |
3 | YT28-1.05 | Valve cover | 1 |
4 | YT28-1.08 | Rifle nut | 1 |
5 | YT28-1.10 | Piston | 1 |
6 | YT28-1.11ᵃ | Cylinder | 1 |
7 | YT28-1.12ᵃ | Guide sleeve | 1 |
8 | YT28-1.13 | Muffler | 1 |
9 | YT28-1.14 | Bush | 1 |
10 | YT24-1.04 | Valve | 1 |
11 | YT24-1.06 | Setting pin | 1 |
12 | YT24-1.07 | Ratchet pawl | 4 |
13 | YT24-1.09 | Rifle bar | 1 |
14 | YT24-1.15 | Crowned spring | 4 |
15 | YT28-2.01ᵇ | Front head | 1 |
16 | YT28-2.02ᵃ | Rotation sleeve | 1 |
17 | YT24-2.03 | Shank sleeve | 1 |
18 | YT28-2.12 | Spring pad | 2 |
19 | YT28-2.05 | Yoke spring | 2 |
20 | YT24-2.06 | Yoke bolt | 2 |
21 | YT24-2.07ᵃ | Yoke | 1 |
22 | YT28-2.09 | Shaft | 1 |
23 | GB889-86 | Hex locking nut | 2 |
24 | YT28-3.02 | Side bolt | 2 |
25 | YT28-3.03ᵃ | Operating valve | 1 |
26 | YT28-3.04 | Water tube | 1 |
27 | YT28-3.05 | Air tube | 1 |
28 | YT28-3.07 | Big seal sleeve | 1 |
29 | YT28-3.08ᵃ | Handle | 1 |
30 | YT28-3.13 | well ring | 2 |
31 | YT28-3.14 | Pressure regulating valve | 1 |
32 | YT28-3.21 | Control handle | 1 |
33 | YT28-3.27 | Left handle | 1 |
34 | YT24-3.01 | Elastic ring | 1 |
35 | YT24-3.06 | Small seal sleeve | 2 |
36 | YT24-3.09 | Side bolt nut | 2 |
37 | YT24-3.10 | Steel retaining ring | 1 |
38 | YT28-3.11 | Air connection tube | 1 |
39 | YT24-3.12 | Trigger | 1 |
40 | YT24-3.15 | Change-over valve | 1 |
41 | YT24-3.16 | Spring | 1 |
42 | YT28-3.18 | Water connection tube | 1 |
43 | YT24-3.19 | Steel retaining ring | 1 |
44 | YT24-3.22 | Fixing pin | 1 |
45 | YT24-3.23 | Water valve body | 1 |
46 | YT24-3.24 | Steel retaining ring | 1 |
47 | YT24-3.25ᵃ | Spring cover | 1 |
48 | YT24-3.26 | Water valve | 1 |
49 | YT24-3.28 | Right handle | 1 |
50 | YT24-3.29 | Rubber handle | 1 |
51 | YT24-3.30 | Seal ring | 1 |
52 | YT25-3.06 | Spring | 1 |
53 | YT25-3.09 | Water tube sleeve | 1 |
54 | YT25-3.13 | Rubber pad | 1 |
55 | YT25-3.14 | Air tube pad | 1 |
56 | YT25-3.20 | Spring | 1 |
57 | YT25-3.21 | Setting pin | 1 |
58 | YT25-3.24 | O-seal ring | 1 |
59 | YT25-3.35 | Pad | 1 |
60 | GB1235-79 | O-ring 8 × 1.9 | 1 |
61 | GB1235-79 | O-ring 22 × 2.4 | 1 |
62 | GB1235-79 | O-ring 25 × 2.4 | 1 |
63 | GB1235-79 | O-ring 36 × 3.5 | 3 |
64 | ZBJ15001-87 | Hoop Φ100 | 1 |
65 | GB879-76 | Elastic pin 8 × 24 | 1 |
66 | GB93-87 | Spring pad 10 | 1 |
67 | GB6172-86 | Hex thin nut M10 | 1 |
68 | 25-01 | Wing nut | 1 |
69 | 25-04 | Conical pipe connector | 1 |
70 | 25-16 | Pipe connector | 1 |
71 | ZBJ15001-87 | Hoop Φ38 | 1 |
Features
· High Drilling Efficiency
The YT28 delivers high impact frequency and fast feed speed, helping improve drilling efficiency in mining and tunnelling operations.
· Strong Flushing Performance
Efficient hole flushing helps remove rock cuttings and maintain smooth drilling progress.
· Low Air Consumption
The optimized pneumatic system provides efficient power transmission while controlling compressed-air consumption.
· Low Noise and Vibration
Reduced operating noise and vibration help improve working conditions and provide better machine control.
· Lightweight Construction
With a machine weight of 26 kg, the YT28 is relatively easy to handle, position and operate in underground working environments.
· Reliable and Durable
Its robust structure and durable components support stable performance under demanding rock-drilling conditions.
· Easy Operation
The grouped control mechanism allows convenient air and water control, helping operators start and control the machine quickly.
· Easy Maintenance
The practical structure and interchangeable spare parts simplify daily servicing and replacement of wearing components.
· Flexible Configuration
The YT28 can be used with a compatible air leg and line oiler to form a complete pneumatic rock-drilling system.
Inquiry
Request a Quote for the YT28 Air-Leg Rock Drill
Contact us for product details, technical support and quotation.
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CORE MESSAGE
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From shallow hole to deep hole drilling systems, Qstone provides complete rock drilling solutions for global mining and construction projects.
Luoyang Qianshi Machinery Equipment Co., Ltd
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Phone：15538565281
Email：info@q-stones.com
Address：Second floor, Forbidden City, Xigong District, Luoyang City, Henan Province
Copyright © 2026 Luoyang Qianshi Machinery Equipment Co., Ltd All Rights Reserved.
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