Active Member
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[China]
Address: B2-0645 ROOM, CENTURY-TEA-TRADE-CENTER, NO.10 MALIANDAO ROAD, XUANWU DISTRICT, BEIJING, CHINA
Contact name:Jade
FLRT Bit |
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12 1/4" FSG125G , Tricone Drill Bit , Sealed Roller Bearing with Gauge Protection , Roller Bit
RECOMMENDED DRILLING PARAMETERS FOR APPLICATION
| Types & IADC Code | 114 115 | 124 125 | 134 135 | 214 215 | 244 245 | 324 325 | |
| WOB | KN/mm(Bit Dia.) | 0.3~0.75 | 0.3~0.85 | 0.3~0.95 | 0.35~0.95 | 0.35~0.95 | 0.4~1.0 |
| Lb/in. (Bit Dia.) | 1712~4285 | 1715~4857 | 1715~5428 | 2000~5428 | 2000~5428 | 2285~5714 | |
| Rotation Speed (Rpm) | 200~80 | 200~80 | 180~80 | 180~80 | 180~60 | 150~60 | |
The above chart represents commonly available sizes and types, we do produce other sizes and types of rock bits which do not appear on this list. Please contact us for more information.
Bearing systems
Roller cone bearing systems are designed to be in satisfactory operating condition when the cutting structure of the bit is worn out. To achieve this standard of bearing performance, modern goals for seal and bearing system life are 1 million or more revolutions of a bit without failure, as opposed to ≈300,000 or fewer in the recent past. To achieve this goal, research into bearing, seal, and lubricant designs and into materials that improve seal and bearing life is ongoing.
Roller-cone bits primarily use two types of bearings: roller bearings and journal bearings, sometimes called friction bearings. Each type is normally composed of a number of separate components, including:
1-Primary bearings
2-Secondary bearings
3-Seal system
4-Features that resist thrust loading
5-Cone retention balls
6-A lubrication system
