Model No.: 8 1/2" IADC537
Type: Center Drill Bit
Material: Tungsten Carbide
Use: Well Drilling
Packaging: PDC bits will be packing by iron case or carton case,wooden case,according to customers' requirement.
Productivity: 10000 Piece/Pieces per Year
Place of Origin: Cangzhou,Hebei
Supply Ability: Level 1
HS Code: 8207199000
Port: Tianjing Port,Beijing Airport
There are primarily four (4) types of bearing designs used in tricone drilling bits:
1.) STANDARD OPEN BEARING ROLLER BIT: On these bits the cones will spin freely. This type of bit has a front row of ball bearings and a back row of roller bearings.
2.) STANDARD OPEN BEARING ROLLER BIT FOR AIR DRILLING: Cones are similar to #1, but have air injection directly to the cones to cool the bearings. Air flows into the cone through the passage ways inside the pin. (Not for mud applications)
3. ) SEALED BEARING ROLLERS BITS These bits have an O-Ring seal with a grease reservoir for bearing cooling. The seals acts as a barrier against mud and cuttings to protect the bearings
4. ) JOURNAL BEARING ROLLER BITS These bits are strictly oil/grease cooled with nose bearings, O-Ring seal and a race for maximum performance.
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