Mining Down The Hole Hammer 4inch Rock DTH Down Hole Hammer Bits With DHD340 Shank

Brand Name:MING
Certification:ISO9001
Model Number:MH40D
Minimum Order Quantity:1PC
Delivery Time:3-5WEEKS
Payment Terms:T/T, D/P, Western Union
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Location: Wuhan China
Address: 1-2-905 California Sunshine, Optical Valley Street,Wuhan 430074, China
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Product Details

Product name: 4inch high air pressure DTH rock hammer with DHD340 shank for mining

Product category: Drilling rig accessories

Matched hammer: Hammer COP44

Connection thread: API 2 3/8 REG

Working pressure(bar): 10~25

Outer diameter(mm): 99

Weight(KGS): 40.7

Bit diameter recommend(mm): 115~130


Kingdrilling DTH hammer feature:
1. Patented innovation to ensure maximum energy transfer

2. Simplified design for easier servicing and higher reliability

3. Hardened wear sleeve for wear resistance even in abrasive conditions

4. Multi-start threads on backhead and chuck for easy coupling/uncoupling

5. Specialised heat-treatment hardening for critical components for maximum longevity


4inch high air pressure DTH rock hammer with DHD340 shank technical parameters:


Model

OD

(mm)

Hole range

(mm)

Length(mm)Connection
Thread

Working
pressure

(Mpa)

Air Consumption

Weight

(Kg)

MH35D8290~115888API2-3/8"REG1.0~1.51.0Mpa-3.8m3/min1.5Mpa-7.5m3/min25
MH40D99110~1351011API2-3/8"REG1.2~2.01.0Mpa-6m3/min1.8Mpa-10m3/min2.4Mpa-15m3/min43.2
MH50D125135~1551110API2-3/8"REG/API2-7/8"IF/API3-1/2"REG1.3-2.31.0Mpa-7m3/min1.8Mpa-14m3/min2.4Mpa-19m3/min69
MH60D142155~2031238API3-1/2"REG1.5~3.01.0Mpa-9m3/min1.8Mpa-18m3/min2.4Mpa-26m3/min98
MH80D180195~2541359API4-1/2"REG1.5~3.01.0Mpa-12m3/min1.8Mpa-22m3/min2.4Mpa-28m3/min175

How to order?
Shank Type + Top Sub Thread + (With/Without Valve, if this parameter is optional)


FAQ:

1. What is rock drilling?

Rock drilling tools include those used for oil and natural gas exploration, mining, construction, and all other industrial operations that need to excavate or drill through natural rocks, concrete, and masonry.


2. What is the weakest rock in the world?

Loess is formed from fine (small) grained, windblown sediment in glacier or desert areas. Loess is made of mostly silt but may also have some small amounts of sand and clay. The major mineral present is quartz with minor amounts of feldspar, calcite, dolomite, and clay.


3. What is DTH bit?

Down-the-hole (DTH) hammer bits are used with Down-the-hole hammers for drilling holes through a wide range of rocks types. In conjunction with DTH hammers, drill hammer bits are designed with a splined drive for rotating the bit in the ground.


MORE INFORMATION:


China Mining Down The Hole Hammer 4inch Rock DTH Down Hole Hammer Bits With DHD340 Shank supplier

Mining Down The Hole Hammer 4inch Rock DTH Down Hole Hammer Bits With DHD340 Shank

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