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|Bearing Type:||Sealed Roller Bearing||Cutting Material:||TCI|
|Standard:||API-7-1, ISO 9001:2008||Series:||FG|
|IADC:||435||Supplementary Features 1:||G : Reinforced Gauge Protection|
|Supplementary Features 2:||T : Trimming Cutter|
9 5/8" FSG515G , TCI Bit , Sealed Roller Bearing , Tricone Roller Bit , Tricone Drill Bit
Bit Size :9 5/8 inch ( 244.5mm )
IADC : 515
SERIES : FG
Tooth type : ( TCI ) Tungsten Carbide Insert
Connection : 6 5/8 inch API REG PIN
Nozzle : three jet (side) nozzles
From 3 7/8inch to 36inch
RECOMMENDED DRILLING PARAMETERS FOR APPLICATION
|Types & IADC Code||415||
|Lb/in. (Bit Dia.)||2000~5428||2000~5428||2285~4000||2285~4000||2571~6285||2857~6857|
|Rotation Speed (Rpm)||150~60||150~60||140~80||120~80||110~60||100~50|
Most roller-cone bits incorporate what appears to be a ball-type bearing. This is the cone retention feature. The balls prevent cones from separating from their journals. Finally, the lubrication system contains the lubricant that, throughout the life of the bearing system, provides lubrication to bearings and seals. These features are described below.
Roller bearings are a common bit-bearing system because they can reliably support large loads and generally perform well in the drilling environment. They are typically used on larger-diameter bits (> 14 in.), which have more physical space to accommodate the rollers. To enhance bearing life, leading manufacturers continually research bearing materials, sizing, and shape.
Journal bearings consist of at least one rotating surface separated from the journal by a film of lubricant. The surfaces are specially designed so that the film of lubricant separates them; were they to touch, mating bearing components would gall or possibly fuse. As long as satisfactory lubrication is provided and loading remains within design limits, journal bearings are extremely efficient. Fig. 3 compares roller-bearing and journal-bearing assemblies.