Hjg HD225A DTH Hammer (NUMA100)

• Customized: Customized
• Standard: JIS
• Length: Jobber-length
• Type: Core Drill Bit
• Material: Tungsten Carbide
• Usage: Wood Drilling, Well Drilling, Metal Drilling
• Hayır. Modeli.: NUMA100
• madencilik nesnesi: madencilik
• Ticari Marka: HJG
• Menşei: China
• HS Kodu: 84123100

Ürün Açıklaması

Based on the characteristics of the wells, oil, gas and construction drilling, our company self-designed, developed and manufactured this kind of high air pressure DTH hammer.


It has the following characteristics:
1. Using the latest rock drilling theory, optimizing the inside structure and the size of the air distribution, to make the DTH Hammer obtain the optimal energy transfer and make it achieve faster drilling speed and lower air consumption.
2. For such projects as the drill bit break, retrieving very difficult, we specially designed a safe and reliable anti-shedding device for the bit.
3. The check valve can be replaced to the one with bigger ail controlling hole to provide more efficient cuttings discharge.
4. The top sub and the drive chuck have special thread, which can achieve an easier disassemble.

Length(exclude bit)	Weight(exclude bit)	External Diameter	Bit Shank	Hole Range	Connection Thread
1745 mm	315.00 kg	Φ225 mm	NUMA100	Φ254mm _ Φ311mm	API 4 1/2'' Reg API 6 5/8'' 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	20 Hz	15-25 rpm		22 m³/min	40 m³/min	65 m³/min