DHD340 COP44 Series 4'' Rock Boring Tool Dth Hammers And Bits
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 |
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|
Impact rate at 17 bar |
Connection Rod Thread |
Recommended Rotation Speed |
Bit Shank |
||||
|
27HZ |
API 2-3/8'' Reg |
25-40 r/min. |
QL40 |
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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 |
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|
Connection Rod Thread |
Bit Shank |
||||||
|
API 2-3/8” Reg |
DHD340A( With Foot Valve) |
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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
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.