Hjg Hn 120A DTH Hammer (NUMA120)

China Hjg Hn 120A DTH Hammer (NUMA120), Find details about China Dth Hammer, Rock Drilling from Hjg Hn 120A DTH Hammer (NUMA120)

Model NO.
NUMA 120
Mining Object
Mining
Trademark
HJG
Origin
China
HS Code
84123100
Model NO.
NUMA 120
Mining Object
Mining
Trademark
HJG
Origin
China
HS Code
84123100
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 DiameterBit ShankHole RangeConnection Thread
1880 mm475.00 kg Φ275 mm  NUMA120Φ305mm _ Φ445mmAPI 6 5/8'' Reg
Working PressureImpact rate at 0.5 MPaRecommended Rotary SpeedAir Consumption
1.0 MPa1.8 MPa2.4 MPa
1.0 - 2.5 MPa20 Hz15-25 rpm28 m³/min 50 m³/min71 m³/min

Hjg Hn 120A DTH Hammer (NUMA120)
Hjg Hn 120A DTH Hammer (NUMA120)
Hjg Hn 120A DTH Hammer (NUMA120)
Hjg Hn 120A DTH Hammer (NUMA120)
Hjg Hn 120A DTH Hammer (NUMA120)
Hjg Hn 120A DTH Hammer (NUMA120)