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China Changsha Hjg High Air Pressure Rock Drilling DTH Hammer Without Footvalve pictures & photos

China Changsha Hjg High Air Pressure Rock Drilling DTH Hammer Without Footvalve

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Local Area:	Changsha, Hunan, China
R&D Capacity:	OEM, ODM, Other
Payment Terms:	LC, T/T, PayPal

Customized:	Customized
Certification:	BIN, JIS, AISI, API
Length:	Stub-length

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Product Description

Rock Drilling DTH Hammer
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 Thread986 mm37.20 kg Φ92 mm Cop44DHD340Φ105mm _ Φ120mmAPI 2 3/8'' Reg Working PressureImpact rate at 0.5 MPaRecommended Rotary SpeedAir Consumption1.0 MPa1.8 MPa2.4 MPa1.0_2.5 MPa30 Hz25-40 rpm5 m³/min 8 m³/min13 m³/min