USD1500.00 - USD1800.00 / Pieces
API 12 1/4"IADC127 Tricone Drill Bit Steel Tooth Bit for Well Drilling

API 12 1/4"IADC127 Steel Tooth Bit Tricone Drill Bit for Well Drilling | |
Diameter | 12 1/4” = 311 mm |
Model | 127 |
Pin Thread | API Reg. 6 5/8” |
Gross Weigh/Net Weight | 92 / 80 Kgs |
Packing Size | 350X350X480 mm |
API SPEC 7-1 | |
Bearing | O-Ring Sealed Journal Bearing |
Normal WOB | 0.35~1.05 KN/MM |
Rotary Speed | 120~50 RPM |
Drilling Formation | Soft with low compressive strength and high drill ability,such as shale,clay,sandstone and soft limestone,etc |

API EAST Brand Tricone Bit Tolerance | ||
Outer Diameter of Tricone Bit | Outer Diameter Tolerance | |
3 3/8 ~ 13 3/4 inch | 0 ~ 0.0313 (1/32)inch | 0 ~ 0.79 mm |
14 ~ 17 1/2 inch | 0 ~ 0.0625 (1/16)inch | 0 ~ 1.57 mm |
17 5/8 ~ 26 inch | 0 ~ 0.0938(3/32)inch | 0 ~ 2.38 mm |
EAST Brand Nozzle Sizes of Tricone Bit | |||||
Code of Nozzles | Tricone Bit Diameter | O.D.of Nozzles | Length of Nozzles | Inner Dia. of Nozzles | |
inch | mm | mm | mm | mm | |
S 0 | 3 5/8 ~ 4 | 92.1 ~ 101.6 | 18.12 | 15.96 | 6 ~ 14 |
S 1 | 4 1/8 ~ 5 3/4 | 104.78 ~ 146.1 | 20.30 | 17.48 | 6 ~ 14 |
S 2 | 5 7/8 ~ 7 3/8 | 149.2 ~ 187.3 | 23.50 | 19.05 | 6 ~ 16 |
S 3 | 7 1/8 ~ 8 1/4 | 190.5 ~ 209.6 | 29.74 | 20.62 | 6 ~ 22 |
S 4 | 8 3/8 ~ 14 5/8 | 212.7 ~ 371.5 | 32.89 | 26.97 | 6 ~ 22 |
S 5 | 14 3/4 ~ 26 | 374.6 ~ 660.4 | 40.84 | 26.97 | 6 ~ 22 |
SC2 | 8 3/8 ~ 11 | 212.7 ~ 279.4 | 23.50 | 26.00 | 6 ~ 14 |
SC4 | 11 5/8 ~ 17 1/2 | 295.3 ~ 444.5 | 32.89 | 35.32 | 6 ~ 22 |









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