- Model NO.: HM4
- Certification: BIN, JIS
- Type: Drilling Machine
- Trademark: HJG
- HS Code: 84123100
- Customized: Customized
- Length: Taper-length
- Mining Object: Mining
- Origin: China
It is a kind of high air pressure DTH Hammer without footvalve, our newest design. It is also one of the most advanced DTH Hammers in the world.
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.
|Length(exclude bit)||Weight(exclude bit)||External Diameter||Bit Shank||Hole Range||Connection Thread|
|1005 mm||40.00 kg||Φ99 mm||HM4||Φ110mm _ Φ135mm||API 2 3/8'' Reg|
|Working Pressure||Impact rate at 0.5 MPa||Recommended Rotary Speed||Air Consumption|
|1.0 MPa||1.8 MPa||2.4 MPa|
|1.0 - 2.5 MPa||30 Hz||25-40 rpm||5 m³/min||9 m³/min||14 m³/min|