8 Inch QL80 Hammer Down The Hole Drilling
8 Inch QL80 DTH Hammer For Rock Drilling Down The Hole Drilling
Description
"DTH" is the short for "Down The Hole" and sometimes it is also called "RAB" in some markets, "RAB" is short for "Rotary Air Blasting".
Specifications
| Description |
Thread connection |
Outside diameter |
Rec. hole size |
Shank style |
Working pressure |
Length without bit |
Weight without bit |
|
|
mm | inch |
mm | inch |
|
bar | psi |
mm | inch |
kg | lbs |
| QL 80 STD |
API 4 1/2 Reg Pin |
181 | 7 1/8 |
200 - 305 | 7 7/8 - 12 |
QL 80 |
6-24 | 87-350 |
1461 | 57 1/2 |
203 | 446 |
| QL 80 STD |
4 1/2 BECO Pin |
181 | 7 1/8 |
200 - 305 | 7 7/8 - 12 |
QL 80 |
6-24 | 87-350 |
1461 | 57 1/2 |
203 | 446 |
| QL 80 HF |
API 4 1/2 Reg Pin |
181 | 7 1/8 |
200 - 305 | 7 7/8 - 12 |
QL 80 |
6-24 | 87-350 |
1461 | 57 1/2 |
203 | 446 |
| QL 80 HC |
API 4 1/2 Reg Pin |
181 | 7 1/8 |
200 - 305 | 7 7/8 - 12 |
QL 80 |
6-24 | 87-350 |
1478 | 58 3/16 |
203 | 446 |
| QL 85 QM |
API 4 1/2 Reg Pin |
194 | 7 5/8 |
216 - 305 | 216 - 305 |
QL 80 |
6-24 | 87-350 |
1461 | 57 1/2 |
250 | 551 |
Usage
Rotation drill rig, air compressor and the "DTH drill string" are the essential unit for DTH drilling while the "DTH drill string" is always made up of DTH drill rods, DTH hammer and DTH bits. As one of key component, the DTH hammer acts as a role of converting the air pressure to the impact energy, simultaneously transferring impact energy and rotation force to DTH bits.
As specialist manufacturer and provider of DTH drilling tools, hereby we recommend our newest generation DTH hammer which is improved by absorbing art technology, selecting superior alloy steel and robust design. It is proved by more than thousands times of test that our newest DTH hammer has longer life, lower air consumption and 15% higher penetration speed compared the conventional DTH hammer in the market.
Advantages
- With longer operating life
- Excellent anti-wear properties
- Easy to operate, stable and reliable
- Smooth with high efficiency
