2018 Hot High Air Pressure DTH Hammer Without Foot Vlave HD45A

• Customization: Available
• Mining Object: Mining
• Transport Package: Box
• Model NO.: HD45A
• Trademark: HJG
• Origin: China
• HS Code: 84123100

Product Description

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 Diameter	Bit Shank	Hole Range	Connection Thread
1248 mm	100.00 kg	Φ142 mm	Cop64, DHD360	Φ155mm _ Φ190mm	API 3 1/2'' 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	23 Hz	20-30 rpm		10 m³/min	20 m³/min	28 m³/min