DTH hammer and Bit

Down-the-hole drilling is a technique where the drill bit is mounted at the end of a drill string and driven by a pneumatic hammer. This method is efficient for drilling through hard rock formations encountered in surface mining. The hammer continuously strikes the bit, creating downward force and breaking the rock. The broken rock fragments are then flushed out of the hole using compressed air or water.:

Product details

DTH Hammers and Bits

ProDrill offers Down-the-hole (DTH) hammers and bits for drilling diameters from 90mm to 305mm。The DTH hammers and the bits are manufactured to the highest standards using premium grade steel alloys that are heat treated and hardened for maximum productivity without compromising durability or reliability.

Advantages of Prodrill™ DTH ( Down-the-Hole) drill bits :

The longer life of the drill: the excellent alloy material, with longer using life which better than the similar products;
High Drilling Efficiency: the drill bits buttons is wear-resistant, so that thedrill can always keep sharp, thus greatly improving the speed of the drilling.
The drilling speed is stable: the DTH bit is scraped and cut to break the rock.
Good Performance: the DTH bit has strong wear resistance, good diameter protection and can make the cutting TCI be used efficiently.
The use of a wide range: the practice proves that the bit is suitable for carbonate rock, limestone, chalk, clay rock, siltstone, sandstone and other soft and hard (9 - grade drill ability of rock, hard rock drilling),compared with normal bit, especially drilling in 6-8 grade rock the effect is particularly significant.

The application of DTH Hammer：

Prodrill™ drill bits is mainly used in geological exploration, coal mine, water conservancy and hydropower, highway, railway, bridge, construction and construction, etc

ProDrill ™ DTH Bits Face design :

Drill Bit Characteristics：

Flat Face：This flat face is suitable for drilling very hard rock formations and corrosive wall formations at high air pressures. When the bits is drilling,the faster the drilling speed, the less wear of the drill body.
Concave Face：This Concave face is suitable for all rock formations, especially in medium-hard and homogeneous rock formations, the effect is good.The blast hole deviation is small, and the slag discharge effect is good.
Convex Face:This Convex face is suitable for low- to medium-pressure drilling of soft-medium hard rock for mations, and the drill block is not easy to corrode.The characteristics of this design are the low load of the side button, the wear is not badly and the drilling speed is fast.
Double Gauge Face：This double-sided button face is suitable for drilling very hard rock formations at high air pressures. When the bits is drilling, drilling speed
is fast, the bit body wear will also be less.
Drop Center:When using low-medium pressure to drillsoft-medium hard and fractured rock formatlons, in order to obtain fast rock driling speed and less blashole slope, this face shape is usually used.