14 3/4" FSG515G , Rubber Sealed Roller Bearing , Reinforced Gage
Protection , TCI Tricone Bit , Tricone Drill Bit
PRODUCT SPECIFICATIONGS
Bit Size : 14 3/4 inch ( 347.4 mm )
IADC : 515
SERIES : FSG
Tooth type : ( TC I) Tungsten Carbide Insert
Connection : 7 5/8 inch API REG PIN
Nozzle Three jet(side) nozzles,
RECOMMENDED DRILLING PARAMETERS FOR APPLICATION
Types & IADC Code | 415 | 435 445 | 515 525 | 535 545 | 615 625 | 635 |
| WOB | KN/mm (Bit Dia.) | 0.35~0.95 | 0.35~0.95 | 0.4~0.7 | 0.4~0.7 | 0.45~1.1 | 0.5~1.2 |
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
|
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.
ROLLER CONE BIT CONE DESIGN
One important factor which affects journal angle is the degree of
meshing or interfit (i.e. the distance that the crests of the teeth
of one cone extend into the grooves of the other). The amount of
interfit affects several aspects of bit design.
1. It allows increased space for tooth depth, more space for
bearings and greater cone thickness
2. It allows mechanical cleaning of the grooves, thus helping to
prevent bit balling
3. It provides space for one cone to extend across the centre of
the hole to prevent coring effects
4. It helps the cutting action of the cones by increasing cone
slippage.
