JSC Mining machines

These bits with open bearings and central flushing with air or water-air mixture are designed for drilling blast holes. The bits of this line can have either journal bearings (the bits ranging from 5 1/8" to 6 1/4") or roller bearings (the bits ranging from 6 1/4" to 15 1/2"). They show high performance due to high-reliability bearing elements, cutting structure and bit body protection.<br />
Cutting structure<br />
The bits of this line have TCI or milled teeth as their cutting structure. The gauge is protected with TCI.<br />
Shirttail and leg protection<br />
Depending on the formations abrasiveness shirttail and leg are hardfaced along the leading edge and protected with TCI.