Hjg Valveless high pressure down-the-hole hammer with bottom valve

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 st

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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 

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

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