Rotary Piling Tools 8 1/2 Round Insert Teeth Single Rock Roller Bit For rotary Drilling Rig
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.
A.Cutting Structure
The wear-resistance of the teeth is enhanced with premium tungsten carbide hardfacing on the tooth surfaces for the steel tooth bit.The durability of premium tungsten carbide inserts is improved with new formulas and new techniques for insert bit
B.Gauge Structure
Multiple gague protection with gauge trimmers on the heel and gauge inserts on the gauge surface of the cone,tungsten carbide inserts and hardfacing on the shirttail increases gauge holding capacity and bearing life
C.Bearing Structure
High precision journal bearing with two thrust faces,Balls lock the cone.Hardfaced head bearing surface.Cone bearing inlaid with friction-reducing alloy and then silver-plated.Abrasion resistance and seizure of the bearing are improved.and suitable for high rotary speed
D.Seal and Lubrication
The advanced metal seal package consists of two metal seals and two elastic energizers.Compressed energizers ensure good contact being kept on two sealing surfaces of metal rings by elastic force,and achieves the bearing seal.In the drilling,metal seals are relatively dynamic,and the energizers are static.This will improve the reliability and durability of bearing seal.The pressure compensator system and advanced grease can greatly increase the lubricating reliability.
Cases for Roller Bits
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8 1/2 Round Insert Rock Roller Bit Roller Bits For Rotary Drilling Rig Images
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