NK90——W series down-the-hole drill bit

NK90 series down-the-hole drill bits

NK90 is a flat-type down-the-hole drill bit, which is suitable for drilling very hard and corrosive rock formations under high wind pressure. The drilling speed is faster and the drill body wears less.

NK90 drill bit introduction

The NK90 down-the-hole drill bit uses high-quality steel and cemented carbide as raw materials. After a special heat treatment process, the button drill bit is achieved by excavating the hard rock of the button bit, and reduces the energy loss during the transmission process. The tooth force is uniform and difficult. Lost teeth and teeth, so the impact energy is concentrated on the rock to achieve high efficiency driving.

NK90 down-the-hole drill bit features

Long bit life

The drill bit of this model has a long service life. The drill bit is made of cemented carbide. The wear ratio of this material is more than 10-20 times that of similar products, so the service life is greatly extended.

Wide range of use

It has a wide range of applications. Practice has proved that the bit is suitable for drilling in medium-hard formations such as carbonate rock, limestone, siltstone, and sandstone.

high working efficiency

The drilling efficiency of the drill bit is high, the hard alloy has high hardness and wear resistance, and the drill bit can always remain sharp, thus greatly improving the speed of the tooth.


The drill bit is cost-effective. Because the drill bit has a fast drilling speed and long service life, the number of drilling times is small, and the drilling cost is greatly reduced.

NK90 bit technical parameters

NK90 drill bit is the best high-pressure down-the-hole drill bit in China. We have exported this bit to many countries and the feedback is very good. You are welcome to contact us if you need it. We can provide all series of drill equipment and drilling tools.