4 Inch DHD340A IR4 Secoroc COP44 High Air Pressure DTH Bit Without Foot Valve

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4 Inch DHD340A IR4 SecorocCOP44 High Air Pressure DTH Bit Without Foot Valve is fitted with cemented carbide inserts, which can provide you with superior service life and drilling productivity, so it is well known and extensively applied to all kinds of rock drilling cases around the world. No matter how difficult the engineering you're dealing with, our drill bits make it easier. Here is the 4-inch DTH drill bit at LEANOMS. WELCOM!
Shank type:
  • 4 inch/ DHD340A/IR4/Secoroc COP44

4 Inch DHD340A IR4 SecorocCOP44 High Air Pressure DTH Bit Without Foot Valve is designed to drill further and the drill bit bodies are made from precision hardened nickel molybdenum steel, with a compound curve shape for faster and smoother cutting and easier removal of cuttings. The following is the specification information of 4-inch DTH bit:

Diameter Gauge Buttons Front Buttons Weight(KG) Part Number
mm Inch Flat Face Convex Face Concave Face Face Type
115 4 1/2 Φ14*7 Φ14*2 Φ14*4 / Convex Face 8.2 LR-DHD340-115CV-1
115 4 1/2 Φ16*7 Φ14*2 Φ14*4 / Convex Face 8.2 LR-DHD340-115CV-2
115 4 1/2 Φ14*8 Φ14*2 Φ14*4 / Convex Face 8.2 LR-DHD340-115CV-3
125 4 15/16 Φ14*8 Φ13*3 Φ14*4 / Convex Face 8.8 LR-DHD340-125CV
127 5    Φ14*8 Φ13*7 / / Flat Face 8.9 LR-DHD340-127FF
130 5 1/8 Φ14*8 Φ14*7 / / Flat Face 9.1 LR-DHD340-130FF

Key Features and Benefits

lValveless and high frequency design ensure smooth operation in various applications.

lSuper strength carbide ensures high quality and performance of products.

lOptimized internal structure maximizes energy output as well as minimizing service requirements.

lAll critical internal components are heat-treated under strict control to make service life longer.


4 inch DTH bit is a widely used size for mining, quarrying, water well drilling and many other construction projects

DHD series dth bit

A comprehensive range of drilling tools means that you can find the most suitable products here, at LEANOMS