8 3/4" 222 mm
HB639J
Profile Medium Parabolic
Blades 6
Cutter Type 13, 16 & 19 mm Diamond Cylinder
Cutter Count 39
Guage Protection Carbide and Diamond

Body Material Stainless Steel
Body Length 114 mm (4.5")
Shank Length 64 mm (2.5")

Pin Connection 4 1/2 API. Regular
Make Up Torque 2100 m, daN (15500 ft/lbs)

Back Rake 18.5 - 19.5 Degrees
Side Rake 1 Degrees
Junk Slot Area 8800 sq. mm (13.6 sq.in.)

Nozzles 9 Nozzles (3 Fixed, 6 Interchangeable)
TFA. 440 -800 sq. mm. (.700-1.2 sq. in.)
Flow Rate .75 to 1.5 m3
Weight on Bit 1000 - 10000 daN
R.P.M. 30 - 220
Formation Soft to Medium



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