12 1/4' Cone Rock Roller Drill Bits for Rotary Drilling Machines

The products adapt to the machine with all the performance features such as a high feed rate, a long service life and short tool changing times. Together with the parts supply assurance, a high daily production volume, and above-average economy is guaranteed
roller bits are tools for boring into rock and earth. They are used to drill blasting holes and penetrate both soft and hard rock materials. Products are also used in many other mining, quarrying, tunneling, construction, geological exploration, and blasting applications. Roller bits can be classified as chiseling bits, tapered or threaded cross-style bits, anchor bits or self-drilling anchor systems, blasting furnace taping hole bits or rods, or coal cutter bits. They feature a hollow body with multiple, outward-extending wings.
1.We have a few senior engineers o specializes in tungsten carbide field for many decades.we can select appropriate grade and composition according to your application and your requirements.
2.for your non-standard parts,we have strong ability to make mold by ourselves,and produce them per your requirements.
3. we have strict quality control and assurance system to guarantee the consistent quality

Single Roller Bits BIT SIZE(SINGLE ROLLER) BIT TYPE In. mm 5 7/8 149.2 517,537,617,637,737 6 152.4 517,537,617,637,737 8 1/2 215.9 517,537,617,637,737 9 7/8 250.8 517,537,617,637,737 10 5/8 269.9 517,537,617,637,737 12 1/4 311.1 517,537,617,637,737 14 3/4” 374.6 517,537,617,637,737 17 1/2” 444.5 517,537,617,637,737

Product Details

Single cone bit is a kind of deceleration bit, which is the speed of cone is smaller than the speed of drill, mainly disorderly cutting broken rock. It is suitable for old well sidetracking and deepening the slim hole drilling operation under high rotary speed and drilling pressure.

Cases for Roller Bits

Application

HKM locates in Hunan province which is in the center of China famous for heavy equipment manufacturers. Kellyway is committed to manufacture and supply most reliable and highest cost-performance products for piling works including Kelly Bars, Drilling Tools, Drilling teeth, Double and Single Wall Casing, Roller Bits, Hydraulic Pile Breaker, Loading Test Jack. From our experience we have a deep understanding on piling works that the properly chosen drilling tools and drilling teeth will sharply increase our drilling efficiency and save operation cost. Kellyway is working on provide the one stop piling solutions for our domestic and global customers and we are dedicated to be your best partner for your piling works from China.