Heavy Duty Down The Hole Hammer DTH Drilling Machine Parts 15-35 Bar Air Pressure
Drilling Machine Spares Down The Hole Hammer 6 Inch Shank M60
It has the following advantages:
1. Out of the trouble of foot valve fracture and expansion and contraction;
2. Lower energy consumption and higher impact frequency. The drilling speed is 15-30% higher than the one with foot valve;
3. Simple structure, reliable parts, long life, easy and cheap maintenance;
4. Lower air and oil consumption, the oil consumption is about 10% lower than the one with foot valve.
According to your request, the top sub can be made into two spanners, an air controlling hole can be drilled on the check valve to provide more efficient cuttings discharge.
Products specifications:
| Shank | M60 |
| Length (less bit) | 1161mm |
| Outer diameter | 146-148mm |
| Top sub thread | API 3 1/2" REG pin |
| Weight (less bit) | 96kg (211lbs) |
| Hole range | 155mm-203mm |
| Working pressure | 10-35bar |
| Impact rate at 1.7 Mpa | 25Hz |
| Recommended rotation speed | 20-30 r/min |
| Air consumption at 7-14 bar | 350-1006 CFM |
DTH bits 155-190mm for above hammers can be available.
Our HM serises DTH hammer specifications:
| DTH hammer type | HM30 | HM40 | HM50 | HM60 | HM80 | |
| Length(less bit) mm | 930 | 1005 | 1084 | 1161 | 1300 | |
| Weight(less bit) kg | 25kg (55lbs) | 40kg(88lbs) | 40.5kg(89lbs) | 96kg(210lbs) | 175kg(374lbs) | |
| External diameter mm | Φ82mm | Φ99 | Φ99 | Φ99 | Φ185 | |
| Bit shank | Mission30 | Mission40 | Mission50 | Mission60 | Mission80 | |
| Hole range(mm) | Φ90-105mm | Φ110-130mm | Φ135-155mm | Φ155-190mm | 195mm-254mm | |
| Connection thread | API 2 3/8" Reg. | API 2 3/8"Reg | API 2 3/8"Reg | API 2 3/8"Reg | API 4 1/2"Reg | |
| Working pressure | 1.0-1.5Mpa | 1.0-2.5Mpa | 1.0-2.5Mpa | 1.0-2.5Mpa | 1.0-3.0Mpa | |
| Impact rate at 1.5-1.7Mpa | 30Hz | 30Hz | 28Hz | 25Hz | 22Hz | |
| Recommended Rotation speed | 25-40r/min | 25-40r/min | 25-40r/min | 20-30r/min | 15-25r/min | |
| Air consumption | 1.0Mpa | 3.8m3/min | 5m3/min | 7m3/min | 9m3/min | 12m3/min |
| 1.8Mpa | 7.5m3/min | 9m3/min | 14m3/min | 18m3/min | 22m3/min | |
| 2.4Mpa | / | 14m3/min | 19m3/min | 26m3/min | 28m3/min | |
1.Pre-sale service:
Act as a good adviser and assistant of clients enable them to get rich and generous returns on their investments . 1.Select equipment model. 2.Design and manufacture products according to client's special requirement ; 3.Train technical personnel for clients .
2.Services during the sale:
1.Pre-check and accept products ahead of delivery .
2. Help clients to draft solving plans .
3.After-sale services:
Provide considerate services to minimize clients' worries.
1.Complete After-sales service,professional engineers available to service machinery at home or oversea.
2. 24 hours technical support by e-mail.
3.Other essential technological service.
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