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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-311-645-REG658
Description
ROT-BD-311-645-REG658
See Blast Hole Rotary Bits Table Below for all details
Blast Hole Rotary Bits 635
| IADC Code | Bit Size / Description | Compressive Strength | Ground Description | Bearing / Circulation | Shirttail Protection | Thread Type & Weight | WOB (lbs) | Cutting Structure |
|---|---|---|---|---|---|---|---|---|
| 635 |
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 medium hard formations with high compressive strength. |
100-150 MPA 14,500-23,000 PSI |
Hard, well compacted rocks such as: hard silica limestones, quartzite streaks, pyrite ores, hematite ores, magnetic ores, chromium ores, phosphorite ores and granites. |
Bearing: Roller-Ball-Roller-Thrust Circulation: Jet Air |
Hardmetal on lug and wear resistant carbide on shirttail lip and lug |
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 |
23,630 - 47,250 lbs (Up to 61,250 lbs for 311mm) |
Inner/Nose Rows: Conical Gage Rows: Conical Gage Bevel Protection: Flat-top |