DHD340 COP44 Series 4'' Rock Boring Tool Dth Hammers And Bits
Basic Information
Items | Replacement Parts |
1 | Top sub |
2 | O-ring of top sub |
3 | Breakout Ring |
4 | Check Valve |
5 | Spring |
6 | Compression Buffer |
7 | Air Distributor |
8 | Internal cylinder |
9 | Piston |
10 | External cylinder |
11 | Guide sleeve |
12 | O-ring of stop ring |
13 | Stop ring |
14 | Breakout ring |
15 | Drive chunk |
16 | Drill bit |
QL40 Hammer Specification
Drilling Diameter(mm) | Hammer Length(mm) | External Diameter(mm) | Weight(kg) |
φ110-φ135 | 1097(without bit) | 99 | 41(without bit) |
Working Pressure(Mpa) | Air Consumption(m³/min) |
1.2-2.0 | 1.0Mpa: 6m³/min | 1.8Mpa: 10m³/min | 2.4Mpa: 15m³/min |
Impact rate at 17 bar | Connection Rod Thread | Recommended Rotation Speed | Bit Shank |
27HZ | API 2-3/8'' Reg | 25-40 r/min. | QL40 |
DHD340 Hammer Specification
Drilling Diameter(mm) | Hammer Length(mm) | External Diameter(mm) | Weight(kg) |
φ108-φ130 | 881(without bit) | φ99 | 38 |
Working Pressure(bar) | Air Consumption(m³/min) |
8.0-30.0 | 10bar: 5 | 18bar: 10.2 | 24bar: 15 |
Connection Rod Thread | Bit Shank |
API 2-3/8” Reg | DHD340A( With Foot Valve) |
Competitive Advantage
•
Valveless air distribution, more reliable.
•
Simple design of the piston. Long life span.
•
More efficient energy transfer, faster drilling speed, low air consumption and lower oil consumption.
•
Fewer internal parts, simple structure, less failure and easier to maintain.
•
Easy to disassembled because the top sub, the drive chuck and the external cylinder are connected by
multiple steps thread.
Photos
