According To API Standards Rock Drilling Tools For Medium Hard Formations
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Click here to know how to select bits ABOUT IADC.pdf
Bits thread are manufactured according to API standards.
| BIT SIZE |
BIT WEIGHT |
THREAD TYPE(API) |
| 7 7/8” (200mm) |
36KG |
4 1/2” REG |
| 9 7/8” (251mm) |
67KG |
6 5/8” REG |
| 11” (280mm) |
76KG |
6 5/8” REG |
| 6 5/8” (311mm) |
100KG |
6 5/8” REG |
IADC 6 SERIES DRILL BITS
The medium formation TCI tricone bits features aggressive chisel tungsten carbide inserts on the heel rows and inner rows.
This design provides a fast drilling rate and added cutting structure durability in medium to medium hard for mations.
The HSN rubber O-ring provides adequate sealing for bearing durability.
Advantage:
- Suitable for soft to extremely hard and abrasive formations.
- High temperature heat treatment forged alloy steel.
- Specifically designed tungsten carbide insert.
- Advanced synthetic grease improves bearing lubrication and reliability.
- Sealed bearing can improves bearing life for longer drilling time and more footage drilled.
- Tungsten carbide pucks added on the shirttail to protect against abrasive applications.
- Thread protected to prevent it damaged during transportation.
Common fault analysis of Tricone bits
1. Early wear of the shirttail
Fault description: Abrasive 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.
Method: The designer should strength the shirttail with certain measures to increase the wear-resistance capacity of shirttails.
2. Early wear and loose movement of the bearing
Fault description: Excessive 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.
Method: Reduce bit pressure and increase air pressure.
3. Cutting structure failure
Fault description: Excessive WOB or Rotation speed; Wrong bit selection; Cuttings blowing in bad conditions caused repeating crushing.
Method: 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.
The above represents commonly available sizes and types, we do produce other sizes and types of rock drill bits which do not appear on . Please contact us for more information.
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High Efficient Rock Drilling Tools For Medium Hard Formations API Standards Images
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