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Roschen Global
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| Quantity: | |
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8 1/2'' IADC127
ROSCHEN
ROS-ST-216
Product Description
Tricone Bits with Steel Milled Teeth 8 1/2'' IADC127
Product description:
Tricone Bits with Steel Milled Teeth 8 1/2'' IADC127
Code No. | ROS-ST-216 |
Diameter | 8 1/2'' / 216mm |
Pin Type Dimensions | 4 1/2'' API |
Teeth Type | Steel Milled |
IADC No | 127 |
Steel milled teeth Tricone drill Bits
ROSCHEN manufactures heavy duty Steel tooth tricone bits to meet your customized drilling needs. We have classified the bits based on their diameter (footprint), American Petroleum Industry number and International Association of Drilling Contractor number (IADC number). The IADC number further classifies the tricone drill bits based on the tooth material of construction, suitability for drilling into soft, medium or hard rock and bearing type used. ROSCHEN offers tricone bits for all possible combinations of IADC number.
Rock formation | Bit type | Bit size | Drilling weight | Rotary speed | ||
mm | inch | kN/mm | r/min | |||
Very soft | Soft Marl, Clays, Sands, Salts etc. | 1 | 187.3~346.1 | 7 3/8~13 5/8 | 441~735 | 120~50 |
soft | Clays, Soft Shale, Marl, Sands, Salts etc. | 2 | 95.2~174.6 | 3 3/4-6 7/8 | 245-490 | 100-50 |
187.3~346.1 | 7 3/8-13 5/8 | 490-784 | 90-40 | |||
Medium soft | Shale, Marl, Sandstone, Soft Limestone etc. | 3 | 95.2~174.6 | 3 3/4-6 7/8 | 245-490 | 80-40 |
187.3~311.1 | 7 3/8- 12 1/4 | 490-784 | 80-40 | |||
medium | Hard Shale, Limestone, Medium/Hard Sandstone etc. | 4 | 95.2~174.6 | 3 3/4-6 7/8 | 294-539 | 80-60 |
187.3~241.3 | 7 3/8-9 1/2 | 539-833 | 60-40 | |||
medium hard | Hard Dolomite, Limestone, Hard Sandy, Rock etc. | 5 | 95.2~174.6 | 3 3/4-6 7/8 | 294-539 | 80-60 |
187.3~241.3 | 7 3/8-9 1/2 | 539-833 | 60-40 | |||
hard | Sandy, Shale, Quartzite, Hard Dolomite, Hard Sandstone etc. | 6 | 95.~-174.6 | 3 3/4-6 7/8 | 294-539 | 80-40 |
187.3-215.9 | 7 3/8-8 1/2 | 580-882 | 60-40 | |||
Very hard | Quartzite, Chert, Basalt Granites, Pyrites etc. | 7 | 95.2-174.6 | 3 3/4-6 7/8 | 294-539 | 80-40 |
ROSCHEN offers heavy duty Steel tricone drill bits to meet your customized drilling needs. We have classified the bits based on their diameter (footprint), International Association of Drilling Contractor number (IADC number) and American Petroleum Industry number (API Number). The IADC number further classifies the tricone bits based on the tooth material of construction, suitability for drilling into soft, medium or hard rock and bearing type used. ROSCHEN offers tricone bits for all possible combinations of IADC number.
