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

NSD 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:

NSD Series High Air Pressure DTH Hammers  Without Foot Valve
Item Description Weight(kg)
NSD4A NSD5A NSD6A NSD8A NSD10A NSD12A
1、Top Sub 6.5 13.7 20 34 59 70
2、“O” Ring Of Top Sub 0.1 0.015 0.015 0.015 0.03 0.04
3、Breakout Ring - - - 0.3 0.5 0.8
4、Chenck Valve 0.35 0.7 0.7 1.2 1.4 2
5、Spring 0.05 0.1 0.1 0.1 0.3 0.1
6、Air Distributor 1.5 2 3.5 6 10.5 16
7、Internal Cylinder 2.1 2.8 4.2 6.5 12.5 25
8、Piston 8.5 15 23 42.5 77 113
9、External Cylinder 15.3 24 28 59 110 175
10、Guided Sleeve 1.3 2.6 2.5 6 11.5 25
11、“O” Ring Of Stop Ring 0.005 0.01 0.01 0.01 0.01 0.01
12、Stop Ring 0.2 0.5 0.5 1.2 1.5 4.5
13、Breakout Ring - - - 0.3 0.5 0.08
14、Drive Chuck 4 7.5 7.5 16 31.5 48
15、Drill Bit 9.8 16 27 37 108 165
Technical Data
Length(Without Bit) NSD4A NSD5A NSD6A NSD8A NSD10A NSD12A
1012mm 1090mm 1011mm 986mm 1110mm 1110mm
Weight(Without Bit) 40.00kg 70.00kg 43.20kg 37.00kg 69.00kg 66.00kg
External Diameter Ø99mm Ø126mm Ø146mm Ø180/Ø185mm Ø226mm Ø275mm
Bit Shank SD4 SD5 SD6 SD8 SD10 SD12
Hole Range Ø110-Ø135mm Ø155-Ø190mm Ø155-Ø203mm Ø195-Ø254mm Ø254-Ø311mm Ø305-Ø445mm
Connection Thread API2 3”/8REG API2 3”/8REG API3 1”/2REG API4 1”/2REG AP6 5”/8REG API6 5”/8REG 
API3 1”/2REG
API2 7”/8REG
Working Pressure 1.2-2.0Mpa 1.3-2.3Mpa 1.5-2.5Mpa 1.5-3.0Mpa 2.0-3.5Mpa 2.0-3.5Mpa
Impact Rate at 17 Bar 30HZ 28HZ 25HZ 22HZ 20HZ 20HZ
Recommended Rotation Speed 25-40r/min 20-35r/min 20-30r/min 15-25r/min 15-25r/min 15-25r/min
20-35r/min
Air Consumption 1.0Mpa:6.0m³/min 1.0Mpa:7.0m³/min 1.0Mpa:9.0m³/min 1.0Mpa:12.0m³/min 1.8Mpa:14.0m³/min 1.0Mpa:28.0m³/min
1.8Mpa:9.0m³/min 1.8Mpa:14.0m³/min 1.8Mpa:18.0m³/min 1.8Mpa:22.0m³/min 2.4Mpa:65.0m³/min 1.8Mpa:50.0m³/min
2.4Mpa:14.0m³/min 2.4Mpa:19.0m³/min 2.4Mpa:26.0m³/min 2.4Mpa:28.0m³/min 2.4Mpa:71.0m³/min
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CONTACT
Tel:+86-13889196063
Add:No. 95-2, blacksmith Road, Hunnan District, Shenyang, Liaoning