2021 Hjg Valveless High Air Pressure DTH Hammer with Foot Valve DHD340

China 2018 Hjg Valveless High Air Pressure DTH Hammer with Foot Valve DHD340, Find details about China DTH Hammer, Rock Drilling from 2018 Hjg Valveless High Air Pressure DTH Hammer with Foot Valve DHD340

Model NO.
DHD340
Mining Object
Mining
Trademark
HJG
Transport Package
Poly Wood
Specification
SGS ISO
Origin
China
HS Code
84123100
Model NO.
DHD340
Mining Object
Mining
Trademark
HJG
Transport Package
Poly Wood
Specification
SGS ISO
Origin
China
HS Code
84123100
It is a kind of valveless high air pressure DTH Hammer with foot valve.

It has the following advantages:
1. Valveless air distribution. More reliable.
2. Simple design of the piston, long life.
3. More efficient energy transfer, faster drilling speed, lower air consumption and lower oil consumption.
4. Fewer internal parts, simple structure, longer life, less failure and easier to maintain because all the parts are heat treated.
5. Easy to disassemble because the top sub, the drive chuck and the external cylinder are connected by multi-step thread.
Length(exclude bit)Weight(exclude bit)External DiameterBit ShankHole RangeConnection Thread
1030mm39.00 kg Φ99 mm  Cop44, DHD340Φ110mm _ Φ135mm API 2 3/8'' Reg
Working PressureImpact rate at 0.5 MPaRecommended Rotary SpeedAir Consumption
1.0 MPa1.8 MPa 2.4 MPa
1.0 - 2.5 MPa27 Hz25-40 rpm6 m³/min 10 m³/min15 m³/min 

2018 Hjg Valveless High Air Pressure DTH Hammer with Foot Valve DHD340
2018 Hjg Valveless High Air Pressure DTH Hammer with Foot Valve DHD340
2018 Hjg Valveless High Air Pressure DTH Hammer with Foot Valve DHD340