Professional Drilling Tools manufacturer

25 Years Manufacturing Experience

JD25A 3inch Water Well DTH Drilling Hammer

Short Description:

Model Number 3/3.5,4,5,6,8,10,12 inches
Drill Rock hardness F=6-20
Condition New
Type Rotary Drilling Rig
Processing Type Forging
 Place of Origin Beijing, China (Mainland)
Brand Name JCDRILL
Usage Rock drilling
Material Carbide

Product Detail

Product Tags

Product Detail

Essential details
Condition: New Brand Name: JCDRILL
Warranty: Unavailable Type: DTH Hammer
Applicable Industries: Energy & Mining Machine Type: Drilling Tool
Showroom Location: None Processing Type: Forging
Video outgoing-inspection: Provided Use: Mining,Quarrying,Tunneling,Construction
Machinery Test Report: Provided Color: Green,blue,golden etc
Marketing Type: Ordinary Product Series: CIR, BR, COP,DHD,MISSION,QL,SD,NUMA
Place of Origin: Beijing, China

Product Features

Introduction

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In air-circulation drilling, if a formation is too hard for penetration by a drag bit, a DTH hammer is generally employed. This tool was developed for the mining and quarrying industry. The ‘business’ end – the button bit – is studded with hemispherical tungsten carbide ‘buttons,’ and with channels built in to allow the passage of compressed air. When the hammer is pressed against the ground, the bit is forced into a pneumatic hammer action (like a road drill) by compressed air fed down the drill pipes. Then, as the tool is rotated in the hole, the buttons act across the entire base of the borehole. Most hammers rotate at speeds of 20 to 30 revolutions per minute, and blows can be struck at rates of up to 4000 per minute. Debris is normally flushed (blown) out of the hole at the end of each drill pipe. DTH hammers are most effective in hard rock formations such as limestones or basalts; soft, fine-grained formations tend to clog the air ducts or jam the piston slides.

Nonetheless, DTH hammers are extremely cost-effective and hence very popular with commercial drillers。

DTH Hammer
Type Model Outer Diameter
High pressure DTH Hammer
3 inch JD25A 71mm
3.5 inch JD35A/M30 82mm
4 inch JD45A/QL40A/M40/SD4 99mm
5 inch JD55A/QL50A/M50/SD5 125mm
6 inch JD65A/QL60A/M60/SD6 142mm
8 inch JD85A/QL80A/M80/SD8 180mm
10 inch HD100A/SD10 225mm
12 inch JD125A/SD12 275mm
14 inch JD140A -
Middel Pressure DTH Hammer
2.5 inch BR1 56mm
3 inch BR2 64mm
3.5 inch BR3 82mm
Lower Pressure DTH Hammer
3 inch CIR65 68mm
3.5 inch CIR70 76mm
4 inch CIR90 99mm
5 inch CIR110 110mm
6 inch CIR150 150mm
8 inch CIR170 170mm
Back Hammer
6 inch BH140 155mm
8 inch BH170 190mm
10 inch BH190 220mm
12 inch BH240 190mm
hammer
Type Model Length Weight External Dia.(mm) Hole Range
(mm) (kg) (mm)
3.5 inch DHD3.5 930 25 82 90-110
4 inch DHD340 1030 39 99 110-135
SD4 1084 40.5 99
QL40 1097 41 99
Mission40 1005 40 99
5 inch DHD350 1214 76.5 125 135-155
SD5 1175 72.5 125
QL50 1147 73 125
Mission50 1110 68.5 125
6 inch DHD360 1248 100 142 155-190
SD6 1261 100 142
QL60 1212 95 146
Mission60 1161 90 146
8 inch D85 1492 188 180 195-254
SD8 1463 192 180
QL80 1465 182 180
Mission80 1338 176 180
10 inch SD10 1502 290 226 254-311
NUMA100 1510 288 226
12 inch DHD1120 All can be designed according to your requests!
Numa120
Numa 125
14 inch JD140A

Picture

详情1 详情2

Commercial Terms of Product

Minimum Order Quantity N/A
Price
Packaging Details Standard Export Delivery Package
Delivery Time 7days
Payment Terms T/T
Supply Ability Based on Detailed Order

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