A borehole drill bit is a type of drilling tool that is used to drill a borehole on the ground or on the stone, there are two types of drill bits, one is called a rotary roller drill bit, and the other is called a DTH hammer drill bit. Here we are going to tell the differences between the rotary roller drill bit and the DTH hammer drill bit.
What is the rotary roller drill bit?
The rotary roller drill bit is a type of water well borehole drilling bit, it is also called a rotary tricone drill bit. There are three rollers covered with teeth on the drill bit, when drilling a water well borehole, the roller will rotate itself to cut the earth into small pieces. This rotary roller drill bit is used to drill soft formations, but it can also drill through some rocks.
What is the DTH hammer drill bit?
The DTH hammer drill bit is a type of drill bit that needs compressed air to drill, it is also called a percussion drill bit. The DTH hammer drill bit is a fixed cutting head drill bit, the cutting head can not rotate itself. To drill fast through the rocks, the shape of the cutting head is different too, there are convex faces, double gauge faces, and drop centers, etc.
Check the specifications of the different types of borehole drill bits.
- DTH drill bit, a kind of compressed air drill bit.
- Tricone drill bit, a kind of water circular drill bit.
- PDC drill bit, uses water to drill.
- Drag drill bit or core drilling bit, uses water to drill.
The differences between the rotary roller drill bit and the DTH hammer drill bit are as follows, the rotary roller drilling bit drills with a mud pump, the mud pump pumps the water into the drilling borehole, and the drill bit will be cooled down, the cuts will be flush out of the water well borehole too. The DTH hammer drill bit uses compressed air to drill and this drill bit can drill through rocks very fast. As the compressed air goes through the DTH hammer, the DTH hammer will hit the rocks into pieces and the cuts will be blown out of the borehole.