PRING S

Ring Bit Casing System – PRING-S

The Pneumec P-RING concentric drilling system is designed to drill and case a hole simultaneously through unstable ground conditions. The driver bit incorporated with a sacrificial ring or reusable ring makes it a perfect drill with a complete full face that significantly improves the penetration rate and hole straightness. The internal flushing grooves together with the casing shoes gives a good seal to the bottom of the drilling hole, and thus minimizing the disturbance to the surroundings in certain sensitive ground conditions.

The Pneumec PRING-S system has a completely full face concentric design consisting of a driver bit, a ring assembly with the ring and casing shoe attached together. The driver bit has several retaining recesses on its body and when the system is rotating clockwise, the ring locks into them. Though the ring assembly is designed for single use, it can be recovered when the casing is pulled out of the hole.