Shenyang ABT Drilling Equipment Co., Ltd.
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ND Series High Air Pressure DTH Hammers Without Foot Valve

ND Series High Air Pressure DTH Hammers Without Foot Valve

ABT produces the highest quality and efficient DTH hammer and drill bits for the mining, construction and water well industries. Drilling and blasting engineers and well contractors rely on ABT equipment because each of our product uses superior materials and advanced processes.
  • Product Description
  • Specification
The high-pressure submerged hole impactor without nylon tube is a valveless high-pressure impactor designed by our company. It is one of the most advanced impactors in the world, and the pressure is 12-30 bar. Its main features are as follows:
1.Out of the trouble of foot valve fracture 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 span,easy and cheap maintenance.
4. The components are few, the structure is simple, and all the parts are hardened. Therefore, the working life is long, the failure is few, and the maintenance is convenient.
5, the joint box card brazing sleeve is threaded and connected with the outer cylinder, easy to disassemble.

According to the different bits of the drill, it is divided into the following series:
ND Series High Air Pressure DTH Hammers Without Foot Valve
Item Description Weight(kg)
ND25A ND35A ND45A ND45S ND55A ND55S ND55C(A) ND65A ND75A ND85A ND1120A
1、Top Sub 3.1 4.2 6.5 6 13.7 13.3 13.7 20 23 34 70
2、“O” Ring Of Top Sub - 0.01 0.01 0.01 0.015 0.015 0.015 0.02 0.015 0.015 0.04
3、Breakout Ring - - - - - - - - - 0.3 0.8
4、Chenck Valve 0.1 0.2 0.35 0.3 0.7 0.7 0.7 0.7 0.7 1.2 2
5、Spring 0.05 0.02 0.05 0.05 0.1 0.1 0.1 0.1 0.1 0.1 0.1
6、Air Distributor 0.6 0.8 1.5 1.3 2 1.9 2 3.5 4.5 6 16
7、Internal Cylinder 0.8 1.3 2.1 1.9 2.8 2.7 2.8 4.2 6.5 6.5 25
8、Piston 3.8 5.5 8.5 7.8 15 14.5 15 23 28 42.5 113
9、External Cylinder 4.5 9.5 15.2 14.6 24 23 25 31.5 40 60 173
10、Guided Sleeve 0.6 1 1.3 1.2 2.6 2.5 3.2 6.5 7.5 5.3 24
11、“O” Ring Of Stop Ring 0.005 0.05 0.01 0.005 0.01 0.01 0.01 0.01 0.01 0.01 0.01
12、Stop Ring 0.1 0.15 0.3 0.2 0.5 0.5 0.5 0.6 0.8 1.2 4
13、Breakout Ring - - - - - - - - - 0.3 0.8
14、Drive Chuck 1.4 1.9 3.4 3.4 6.5 6.2 4 6 8 17.5 46
15、Drill Bit 3.2 5 9 8.5 16 15.5 15.9 26 28.5 40 140
Technical Data
Length(Without Bit) ND25A ND35A ND45A ND45S ND55A ND55S
872mm 888mm 1011mm 986mm 1110mm 1110mm
Weight(Without Bit) 16.00kg 25.00kg 43.20kg 37.00kg 69.00kg 66.00kg
External Diameter Ø71mm Ø82mm Ø99mm Ø92mm Ø126mm Ø116mm
Bit Shank ND25 IR35 COP44/DHD340 COP44/DHD340 COP54/DHD350R COP54/DHD350R
Hole Range Ø71-Ø90mm Ø90-Ø115mm Ø110-Ø135mm Ø105-Ø120mm Ø135-Ø155mm Ø127-Ø145mm
Connection Thread T42x10x1.5 API2 3”/8REG API2 3”/8REG API2 3”/8REG API2 3”/8REG API2 3”/8REG
API3 1”/2REG API3 1”/2REG
API2 7”/8REG API2 7”/8REG
2 7”/8 IF
Working Pressure 1.0-1.5Mpa 1.0-1.5Mpa 1.2-2.0Mpa 1.2-2.0Mpa 1.3-2.3Mpa 1.3-2.3Mpa
Impact Rate at 14 Bar 25HZ 25HZ 30HZ 30HZ 28HZ 28HZ
Recommended Rotation Speed 22-35r/min 25-40r/min 22-35r/min 25-40r/min 20-35r/min 25-35r/min
Air Consumption 1.0Mpa:4.0m³/min 1.0Mpa:3.8m³/min 1.0Mpa:6.0m³/min 1.8Mpa:8.0m³/min 1.0Mpa:7.0m³/min 1.0Mpa:7.0m³/min
1.5Mpa:6.0m³/min 1.5Mpa:7.5m³/min 1.8Mpa:10.0m³/min 2.4Mpa:13.0m³/min 1.8Mpa:14.0m³/min 1.8Mpa:13.5m³/min
2.4Mpa:15.0m³/min 2.4Mpa:19.0m³/min 2.4Mpa:18.0m³/min
Technical Data
Length(Without Bit) ND55C(A) ND65A ND75A ND85A ND1120A
1102mm 1238mm 1258mm 1359mm 1880mm
Weight(Without Bit) 68.00kg 98.00kg 120.00kg 175.00kg 474.00kg
External Diameter Ø126mm Ø142/Ø146mm Ø165mm Ø180/Ø185mm Ø275mm
Bit Shank ND55C/DHD350Q COP64/DHD360 COP64/DHD360 COP84/DHD380 CDHD1120
Hole Range Ø135-Ø155mm Ø155-Ø203mm Ø175-Ø216mm Ø195-Ø254mm Ø305-Ø445mm
Connection Thread API2 3”/8REG API3 1”/2REG API3 1”/2REG API4 1”/2REG API6 5”/8REG
API3 1”/2REG
API2 7”/8REG
Working Pressure 1.3-2.3Mpa 1.5-3.0Mpa 1.5-3.0Mpa 1.5-3.0Mpa 2.0-3.5Mpa
Impact Rate at 17 Bar 28HZ 25HZ 23HZ 22HZ 20HZ
Recommended Rotation Speed 22-35r/min 20-30r/min 20-30r/min 15-25r/min 15-25r/min
Air Consumption 1.0Mpa:8.0m³/min 1.0Mpa:9.0m³/min 1.0Mpa:11.0m³/min 1.0Mpa:12.0m³/min 1.0Mpa:28.0m³/min
1.8Mpa:6.0m³/min 1.8Mpa:18.0m³/min 1.8Mpa:20.0m³/min 1.8Mpa:22.0m³/min 1.8Mpa:50.0m³/min
2.4Mpa:19.0m³/min 2.4Mpa:26.0m³/min 2.4Mpa:28.0m³/min 2.4Mpa:28.0m³/min 2.4Mpa:71.0m³/min
 
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Add:No. 95-2, blacksmith Road, Hunnan District, Shenyang, Liaoning