- Model NO.: 8 1/2 Inch 637
- Bearing Type: Journal Bearing
- Nozzle Number: 3
- Bit Size: 8 1/2 Inch
- Specification: Tungsten Carbide
- HS Code: 8207191
- Color: Golden or as You Wish
- IADC: 637
- Application Formation: High Compressive Medium Hard Rocks
- Trademark: superior
- Origin: China
Our product line also includes tungsten carbide insert (TCI) bits and steel tooth bits for the toughest drilling applications.
TCI Tricone bits offer a variety of carbide inserts such as spherically shaped inserts for very hard rock or conically shaped inserts for softer rock. The number of rows of inserts is directly related to the type of application and the size of hole to be drilled. There are also open and sealed bearings available as well as three types of shirttail protection to choose from.
The wear resistance of teeth is enhanced with premium tungsten carbide hardfacing on the tooth surfaces for steel tooth bit. The durability of premium tungsten carbide inserts is improved with new formulas and new techniques for insert bit.
Multiple gauge protection with gauge trimmers on the heel (in the outer row)and gauge inserts on the gauge surface of the cone, tungsten carbide and hardfacing on the shirttail increases gauge holding capacity and bearing life.
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 resistance of the bearing are improved, and suitable for high rotary speed.
Seal and Lubrication:
Premium HNBR O-ring, optimal seal compression and curved seal structure can enhance the seal performance. The pressure compensator system and advanced grease can greatly increase the lubricating reliability.
It can receive high WOB in the conventional drilling. It is suitable for various formations by matching cutting structure with different tooth shape, tooth density and tooth exposure height.
You are welcome to visit our factory checking our quality and process of our products. Please feel free to contact us.