ND Series High Air Pressure DTH Hammers With Foot Valve

ANBIT 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.
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Advantages Of ND Series High Air Pressure DTH Hammers:

1. Valveless air distribution, more reliable.
2. Simple design of the piston, long life span.
3. More effcient energy transfer, faster drilling speed, lower air consumption and lower oil consumption.
4. Fewer intemal parts, simple structure, long life span, less failure and easier to maintain because all the parts are heat trated.
5. Easy to disassemble because the top sub,the drive chuck and the extemal cyinder are connected by muitiple steps thread.

 

Specification Of ND Series High Air Pressure DTH Hammers With Foot Valve
Item DescriptionWeight(kg)
ND35ND45ND55ND55CND65ND85ND1120
1、Top Sub4.26.51513.7204170
2、“O” Ring Of Top Sub0.010.010.010.010.020.020.04
3、Breakout Ring0.010.20.8
4、Chenck Valve0.20.421111.53
5、Spring0.020.040.040.040.040.10.1
6、Compression Buffer0.040.040.080.080.080.421
7、Air Distributor1.42.23.73.5512.520
8、Internal Cylinder1.62.34.54.258.623
9、Piston5.4915.517.223.641125
10、External Cylinder9.5153026.536.862170
11、Guided Sleeve1.22.49.616
12、“O” Ring Of Stop Ring0.010.010.010.020.020.020.04
13、Stop Ring0.20.20.30.50.61.24.5
14、Breakout Ring0.010.20.8
15、Drive Chuck1.953.56.44.5617.548
16、Drill Bit591615.62640120
Technical Data
Length(Without Bit)ND35ND45ND55ND55CND65ND85ND1120
930mm1045mm1214mm1160mm1248mm1492mm1900mm
Weight(Without Bit)25.00kg39.00kg76.50kg72.50kg100.00kg188.00kg480.00kg
External DiameterØ82mmØ99mmØ126mmØ126mmØ142mm Ø144mmØ180mm/Ø185mmØ275mm
Ø146mm Ø148mm
Bit ShankNHD3.5COP44/DHD340COP54/DHD360COP55C/DHD350QCOP64/DHD360COP84/DHD380CDHD1120
Hole RangeØ90-Ø110mmØ110-Ø135mmØ135-Ø155mmØ135-Ø155mmØ155-Ø190mmØ195-Ø254mmØ305-Ø445mm
Connection ThreadAPI2 3”/8REGAPI2 3”/8REGAPI2 3”/8REGAPI2 3”/8REGAPI3 1”/2REGAPI4 1”/2REGAPI6 5”/8REG
API3 1”/2REGAPI3 1”/2REG
API2 7”/8REGAPI2 7”/8REG
Working Pressure1.0-1.5Mpa1.2-2.0Mpa1.3-2.3Mpa1.3-2.3Mpa1.5-2.5Mpa1.5-3.0Mpa2.0-3.5Mpa
Impact Rate at 17 Bar28HZ27HZ25HZ25HZ23HZ27HZ16HZ
Recommended Rotation Speed25-40r/min25-40r/min20-35r/min20-35r/min20-30r/min20-30r/min15-25r/min
Air Consumption1.0Mpa:4.5m³/min1.0Mpa:6.0m³/min1.0Mpa:9.0m³/min1.0Mpa:9.0m³/min1.0Mpa:10.0m³/min1.0Mpa:15.0m³/min1.0Mpa:30.0m³/min
1.5Mpa:9.0m³/min1.8Mpa:10.0m³/min1.8Mpa:15.0m³/min1.8Mpa:15.0m³/min1.8Mpa:20.0m³/min1.8Mpa:26.0m³/min1.8Mpa:56.0m³/min
2.4Mpa:15.0m³/min2.4Mpa:23.0m³/min2.4Mpa:23.0m³/min2.4Mpa:28.5m³/min

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