Hunan New Diamond Construction Machinery Co., Ltd.
Hunan New Diamond Construction Machinery Co., Ltd.

Hunan New Diamond Construction Machinery Co., Ltd.

Home ProductsWater Well Drilling Hammer

Mining Drilling Tools DTH Hammer

Mining Drilling Tools DTH Hammer

  • Mining Drilling Tools DTH Hammer
Mining Drilling Tools DTH Hammer
Product Details:
Place of Origin: Hunan, China (Mainland)
Brand Name: New Diamond
Certification: ISO9001:2008
Model Number: ND series
Payment & Shipping Terms:
Minimum Order Quantity: Negotiable
Price: Negotiable
Packaging Details: Carton packaging and wooden box packing
Delivery Time: 5-8 work days
Payment Terms: L/C, T/T, Western Union
Supply Ability: According to order quantity
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Detailed Product Description
Use: Water Well/ Ore Mining Machine Type: Drilling Equipment
Processing Type: Forging Color: According To Demand
Usege: Mining&Construction&Water Well Drilling
High Light:

dth tools


water drilling tools


Mining Drilling Tools DTH Hammer


DTH hammers are used for blast hole drilling and water well drilling project.Working with DTH drilling pipe and DTH drill bit, mainly applied in Mining,Marble quarry or well drilling and other construction projects.


1. Based on previous experience of ordinary hammers, combined with the features of reverse circulation hammer, optimized internal structure and ideal energy transfer, thus ensuring the series of hammers drilling with fast, smooth and continuous sampling.

2. The internal structure is very simple with components of high rigidity, thus ensuring long life and easy maintenance of the hammer.


3. The collection tube adopts an integrative design and can be replaced without disassembling the hammer. With carburizing treatment, it has good abrasive resistance.


4. Equipped with bits designed with patent. Simply by replacing the drill bit, the same hammer
can drill holes of different sizes ensuring that the sample is not contaminated.


5. In difficult conditions such as loose soil, hard rock and plenty of water exists, sampling can be done well.



All our products, which passed ISO9001 quality management system, are widely used in open pit mining,tunneling, quarrying, transportation construction,engineering, earth-rock excavation, water wells, pile foundation, and civil engineering project etc. We are one of the companies which have the most complete product lines, the most abundant species and the most widely used products in drilling industry.


Technical Data
Length(Without Bit) ND142A ND180A ND225A ND275A ND330A ND475A ND525A
1388mm 1520mm 1745mm 2626mm 3870mm 4080mm 4260mm
Weight(Without Bit) 102.00kg 178.00kg 315.00kg 650.00kg 1050.00kg 2775.00kg 3626.00kg
External Diameter Ø142mm Ø180mm Ø225mm Ø275mm Ø330mm Ø475mm Ø525mm
Bit Shank DHD360 QL80 NUMA100 NUMA125 ND330 ND475 ND525
Hole Range Ø155-Ø195mm Ø195-Ø254mm Ø254-Ø311mm Ø305-Ø445mm Ø350-Ø660mm Ø508-Ø706mm Ø610-Ø800mm
Connection Thread API3 1”/2REG API4 1”/2REG

API4 1”/2REG

API6 5”/8REG

API6 5”/8REG

API7 5”/8REG

API7 5”/8REG API8 5”/8REG API8 5”/8REG
Working Pressure 1.0-2.5Mpa 1.8-3.0Mpa 1.8-3.0Mpa 1.8-3.0Mpa 1.8-3.0Mpa 2.0-3.0Mpa 2.0-3.0Mpa
Impact Rate at 17 Bar 25HZ 20HZ 20HZ 20HZ 20HZ 20HZ 20HZ
Recommended Rotation Speed 20-30r/min 15-25r/min 15-25r/min 15-25r/min 15-25r/min 15-25r/min 15-25r/min
Air Consumption

























1.Using the latest rock drilling theory,optimizing the inside structure and the size of the air distrbution,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 replaced to the one with bigger air controlling hole to provide more efficient cutting discharge.


4.The top sub and the drive chuck have special thread,which can achieve an easier disassemble.


Feature Advantage

1. Fast drilling speed and low air consumption due to the special inner structure.
2. Smooth performance and long service due to high quality alloy steel materials and advanced processing.


Technology adapted

1. Low problem rate and easy to maintenance due to simple, reliable and easy assemble and disassemble inner.


Structure of hammer

1. Easy to depart bit from hammer due to multi—head thread connecting chuck and cylinder of hammer.
2. Interchangeable with DTH bit and drill pipe.


The appearance of the picture is different from that of the actual product, and the actual product is the standard.


Mining Drilling Tools DTH Hammer 0

Item Description Weight(kg)
ND142A ND180A ND225A ND275A ND330A ND475A ND525A
1,Top Sub 20.00 34.00 59.00 230.00 320.00 800.00 960.00
2,“O” Ring Of Top Sub 0.02 0.015 0.03 0.04 0.10 0.02 0.03
3,Breakout Ring - 0.60 0.80 1.00 2.00 3.55 5.00
4,Chenck Valve 0.70 1.20 1.40 2.00 5.00 13.50 18.00
5,Spring 0.10 0.10 0.30 0.50 0.80 0.35 0.45
6,Air Distributor 3.50 6.00 10.50 16.00 35.00 58.90 79.50
7,Internal Cylinder 4.20 6.50 12.50 25.00 30.00 101.60 137.00
8,Piston 23.00 42.50 77.00 113.00 190.00 517.00 698.00
9,External Cylinder 31.50 60.00 110.00 170.00 316.00 952.00 1285.00
10,Guided Sleeve 6.50 6.30 4.50 23.00 38.00 98.00 132.00
11,“O” Ring Of Stop Ring 0.01 0.01 0.02 0.03 0.05 0.02 0.02
12,Stop Ring 0.60 1.40 1.90 4.00 6.00 14.25 19.50
13,Breakout Ring 0.20 0.60 0.80 1.00 2.00 3.55 5.00
14,Drive Chuck 5.00 12.00 21.00 34.00 64.00 162.00 219.00
15,Retainer 3.50 6.50 9.00 30.00 42.00 50.00 67.50
16,Drill Bit 27.00 37.00 68.00 185.00 240.00 528.00 1328.00



Contact Details
Hunan New Diamond Construction Machinery Co., Ltd.

Contact Person: Rick.liao

Tel: +8618692219720

Send your inquiry directly to us
Hunan New Diamond Construction Machinery Co., Ltd.
PinJiang Industry Park,PingJiang county,YueYang City,Hunan,China.
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