Barrel Reamer & Hole Opener

Barrel reamer is a kind of drilling bit with two cone shaped ends and cutting edges distributed in point or spiral shape on straight section surface in the middle. It has the features of spiral reamer but it's not easy to get caught in stratum like screw threads and has relatively larger reaming resistance. Barrel reamer is especially suitable for intact soil layer and has dual functions of extruding and cutting. It can realize good molding after reaming and it has long service life. In addition, practice proves that it shows good effect in many general strata. However,when using in high viscosity soil layer, it's easy to produce bit balling phenomenon that the bit is formed into mud balling shape, which leads to very low reaming efficiency. But this will not cause much residue after reaming, which leads to short hole cleaning time. Besides, the machining of this reamer bit is easy and the cost is low.

Core shaft, 16Mn steel sheet, carbide bit

The barrel reamers produced in our factory have specifications of φ300mm~φ1200mm. Threads connected to core shaft can be matched according to users' requirements.

Clean the mud and sand pasted on bit surface every time after back reaming process and particularly clear the nozzle hole for mud. Meantime, check the wear of core shaft connected threads and the conditions of cutting edges. Pay attention and don't collide or heavily press when transporting and stacking in order not to damage cutting edges and threads. Coat thread dope and screw thread protector on threads.