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7 7/8 Inch Tricone Rock Bit Sealed Bearing Abrasion Resistance Long Run Times

Categories Tricone Rock Bit
Brand Name: Tianying
Model Number: IADC 645
Certification: ISO 9001
Place of Origin: CHINA
MOQ: 1 piece
Price: USD 1000-2000 per piece
Payment Terms: L/C, T/T
Supply Ability: 1000 pcs per Month
Delivery Time: 10-15 working days
Packaging Details: Wooden case , signle item per case
Bearing type: Sealed Bearing
Machine Type: Roller cone bit
Material: Steel,Tungsten carbide and Grease
Size: 7 7/8 inch or 200mm
Application: Open Pit Mines Drilling
Advantage: Endure Long Run times
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7 7/8 Inch Tricone Rock Bit Sealed Bearing Abrasion Resistance Long Run Times

Tungsten Carbide Insert Tricone Rock Bit For Various Formation Drilling


Click here for catalogueTCI DRILL BIT.pdf


IADC 6 SERIES DRILL BITS


These bits are used to drill high-compressive strength, medium hard formations. A small amount of cone offset and low insert projection is used to prevent cutting structure damage when hard streaks are encountered. Increased numbers of blunter, smaller diameter inserts are used to increase life in harder, more abrasive formations.


Structural Features


Tricone bit Cutting Structure

1. The durability of premium tungsten carbide inserts is improved with new formulas and new techniques for insert bit.

2. Tricone bit Gauge Structure

Multiple gauge protection with gauge trimmers on heel and gauge inserts on the gauge surface of the cone, tungsten carbide inserts and hardfacing on the shirttail increases gauge holding capability and bearing life.

3. Tricone bit Sealed Bearing Structure and Lubrication

High precision bearing with two thrust faces. Balls lock the cone.Hardface heard bearing surface. Cone bearing inlaid with friction-reducing alloy. Abrasion resistance and seizure resistance of the bearing are improved and suitable for high rotary speed. Grease compensator to maintain pressure inside the bearing and improve lubrication.

4. Tricone bit Sealed Bearing Structure

API standard threads are turned with precision machining making them concentric to the gage rows for uniform loading on bearings.


Common fault analysis of Tricone bits


Common faultFault descriptionMethod
Early wear of the shirttailAbrasive formations, bent drill rod, seriously worn stabilizer and insufficient air for drilling rate attained etc, are all the causes which result in premature shirttail wear. In this case, the configuration of cones is good and the amount of inserts wear is small. Shairttail wear can also allow the big roller bearings to fall out resulting in bit failure.The designer should strength the shirttail with certain measures to increase the wear-resistance capacity of shirttails.
Early wear and loose movement of the bearingExcessive weight on bit, insufficent air to clean the hole and/or cool the bearing, leads to bearings overheating due to improper cooling and poor cuttings removal can shorten the service life of bit bearing.Reduce bit pressure and increase air pressure
Cutting structure failureExcessive WOB or Rotation speed; Wrong bit selection; Cuttings blowing in bad conditions caused repeating crushing.Correctly select operating parameters and rotary types for specific working conditions

Main Products We Provide


We mainly provide Tricone Bits(TCI Drill Bits) for open pit mining.

a). Type: Tungsten Carbide Insert (TCI)

b). Formation Application: Soft to Hard Formation

c). Size Available: 7 7/8''~26''

d). Popular IADC Code: IADC545,645,725,735,745,825,835


Don’t see the bit you are looking for? Give us a call, we can customize any bit to fit your unique circumstances.


Don’t see the bit you are looking for? Give us a call, we can customize any bit to fit your unique circumstances.

Product Tags:

tci drag drill

  

tricone drilling bits

  
Quality 7 7/8 Inch Tricone Rock Bit Sealed Bearing Abrasion Resistance Long Run Times for sale
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