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Regional Offices: Onslow WA, Newman WA, Port Hedland WA, Karratha WA and Tom Price WA.
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ROT-BD-311-435SB
Description
ROT-BD-311-435SB
See Blast Hole Rotary Bits Table Below for all details
Blast Hole Rotary Bits 435
| IADC Code | Bit Size / Description | Compressive Strength | Ground Description | Bearing / Circulation | Shirttail Protection | Thread Type & Weight | WOB (lbs) | Cutting Structure |
|---|---|---|---|---|---|---|---|---|
| 435 |
200mm(7 7/8”) 216mm(8 1/2”) 229mm(9”) 251mm(9 7/8”) 270mm(10 5/8”) 311mm(12 1/4”) TCI sealed roller bearing bit with gauge protection for soft formations with low compressive strength and high drillability. |
65-85 MPA 9,000-12,000 PSI |
Dolomites, soft poorly compacted shales. Long intervals of sandstones, clays, salts, and limestones. |
Bearing: Roller-Ball-Roller-Thrust Circulation: Jet Air |
Hardmetal and wear-resistant carbide on shirttail lip and lug |
200mm: 4 1/2" API REG / 34kg 216mm: 4 1/2" API REG / 38kg 229mm: 4 1/2" API REG / 50kg 251mm: 6 5/8" API REG / 65kg 270mm: 6 5/8" API REG / 74kg 311mm: 6 5/8" API REG / 98kg |
9,880 - 39,500 lbs (Up to 61,250 lbs for 311mm) |
Inner/Nose: Conical Gage Rows: Chisel Gage Bevel: Round |