Product name: 5inch High Air Pressure DTH Hammer With DHD350 Shank For Coal Mining
Product category: Down The Hole Hammer
Matched hammer: Hammer DHD350
Connection thread: API 2 3/8 REG
Working pressure(bar): 10~25
Outer diameter(mm): 125
Weight(KGS): 69
Bit diameter recommend(mm): 127~135
Kingdrilling has become The Driller’s Choice for some of the world’s small and middle mining projects, thanks to a reliable quality and high cost performance that can supply and service Kingdrilling products in even the most remote and inaccessible parts of the world.
Our customers strongly recommend the DTH hammer for its exceptional performance and exceptional value. With its higher impact rate, lower energy consumption, simple design, reliable parts, long life, easy and cheap maintenance, as well as lower air and oil consumption, this product is a must-have for any drilling operation. Choose the DTH hammer for a reliable and efficient drilling experience, backed by our professional expertise.
High air pressure DTH hammer with DHD350 shank technical parameters:
| Model | Spline | OD
(mm) | Hole
range
(mm) | Length
(mm) | Connection
Thread | Working pressure
(Bar) | Air Consumption |
| MH35D | DHD3.5 | 82 | 90~115 | 888 | API2-3/8"REG | 10~15 | 10BAR/145PSI-134CFM | 15BAR/217.5PSI-265CFM |
| MH40D | DHD340/COP44 | 99 | 110~135 | 1011 | API2-3/8"REG | 12~20 | 10BAR/145PSI-212CFM | 18BAR/261PSI-353CFM | 24BAR/348PSI-530CFM |
| MH50D | DHD350/COP54 | 125 | 135~155 | 1110 | API2-3/8"REG/API2-7/8"IF/API3-1/2"REG | 13-23 | 10BAR/145PSI-247CFM | 18BAR/261PSI-494CFM | 24BAR/348PSI-671CFM |
| MH60D | DHD360/COP64 | 142 | 155~203 | 1238 | API3-1/2"REG | 15~30 | 10BAR/145PSI-318CFM | 18BAR/261PSI-635CFM | 24BAR/348PSI-918CFM |
| MH80D | DHD380/COP84 | 180 | 195~254 | 1359 | API4-1/2"REG | 15~30 | 10BAR/145PSI-424CFM | 18BAR/261PSI-777CFM | 24BAR/348PSI-988CFM |
How to order?
Shank Type + Top Sub Thread + (With/Without Valve, if this parameter is optional)
FAQ:
1. What is DTH hammer?
Down-the-hole drilling (DTH) essentially involves a drilling hammer at the bottom of a drill string. It relies on three elements for drilling holes: bit loading (weight), rotation and air. These active elements combine to be efficient at crushing rock.
2. What type of drill is best for stone?
Drilling through stone, brick, granite, and even marble is possible, but it takes a tough drill bit made of hard metal to do it. Kingdrilling drill bits are specifically designed to tackle stone and can bore through these hard surfaces with ease.
3. Can you drill through cobblestone?
Because cobble is so hard and challenging to cut, directional drilling is challenging. Cobble fragments roll away and do not stay in place during drilling because they are constantly moving and make it impossible for rock fragments to pierce them.
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