Products
SJ Series Metal Sealed Bearing Tri-Cone Bit
- Type:Roller Cone Bit
- CAS No:
- Qty in 20' FCL:
- Min. Order:
- Packaging:
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Bit Size
Bit Model
inch
mm
7 7/8
200
SJ517G
SJ527G
SJ547GY
SJ617GY
SJ627G
SJ637GY
8 1/2
215.9
SJT117GW
SJT127GW
SJT437GK
SJT447GK
SJT517G
SJT537G
SJT617GY
SJT627G
SJT637GY
9 1/2
241.3
SJT117GW
SJT127GW
SJT437G
SJT517G
SJT537G
SJT547G
SJT617GY
12 1/4
311.1
SJT117GW
SJT127GW
SJT437G
SJT517G
SJT537G
SJT617GY
SJT627G
SJT637GY
17 1/2
444.5
SJT117GW
SJT127GW
SJT517G
SJT537G
SJT617GY
SJT627G
SJT637GY
-
Cutting Structure
Enhancing the wear-resistance of teeth with high-density premium tungsten carbide hardfacing on the tooth surfaces for steel tooth bit. Reinforcing the compressive mechanical properties of inserts by using premium tungsten carbide insert with new formula and new techniques for insert bit.
Gauge Structure
Multiple gauge 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 capabilities and seal protection.
Bearing Structure
High precision journal bearing with two thrust faces. Balls lock cone. Hardfaced head bearing surface. Cone bearing inlaid with friction reducing alloy and then silver-plated. Abrasion resistance and seizure resistance of the bearing are improved, and suitable for high rotary speed.
Seal and Lubrication
The advanced metal seal package consists of two metal seals and two elastic rubber energizers. Energizers ensure good contact being kept on the two sealing surfaces of metal rings through elastic force generated by compression, and achieves the bearing sealing. In the drilling, the metal seals are relatively dynamic, and the energizers are static. This will increase the reliability and durability of bearing seal. The pressure compensator system and advanced grease can greatly increase the lubricating reliability.
Product Application
It is applicable for downhole motor and high-speed rotary reliability.