LEANOMS manufactures a complete line of RC Drilling Hammer hammers and bits to suit a variety of depths and ground conditions. Reverse circulation drilling is becoming increasingly popular around the world due to its high-quality sample results and speed of operation for shallower holes. It is, in fact, the most widely used sampling method. This is largely due to our creative designs, and we're still working on expanding the capabilities of this useful sampling method. We also offer a comprehensive range of technical services, including product selection, technical advice, and on-site support.
RC Drilling Hammer Working principle：
1. With the piston resting on the percussion RC bit and the RC Drilling Hammer closed up in the drilling position, high-pressure air is directed into the bottom chamber of the Hammer and the piston lifts. This commences the piston cycle.
2. As the piston travels upwards it forms the top chamber by forming a seal with the inner tube and the ID of the piston. Further movement seals the port that feeds the bottom chamber and also simultaneously releases the seal on the bottom chamber allowing the air to expand and exhaust down the splines of the percussion bit. At the same time, the Top chamber port is opened which feeds the high-pressure air into the previously formed top chamber thus increasing the pressure above the piston and forcing it back down.
3. During the down cycle or power stroke the piston reseals the bottom chamber on the piston bearing bush thus stopping the exhaust air and creating a chamber of high-pressure air below the piston which forces the piston back up the RC Drilling Hammer
4. Lifting the hammer from the bottom of the hole allows the percussion bit to slide down the drive sub also allowing the piston to slide down the RC Drilling Hammer and rest on the piston bearing bush. The piston strike face and the strike face of the percussion RC bit can now not come into contact thus allowing the free flow of high-pressure air directly through the hammer without the RC Drilling Hammer cycling.
