Non-sealed ball and roller bearing
FORMATION: Medium to hard strength with hard streaks(calcite, dolomite, limestone, anhydrites, hard shales).
CUTTING STRUCTURE: The TO22 has slightly shorter tooth length and more close spacing than TO21. Long crests in outer rows have self-sharpening hardfacing for maximum penetration and long life.
Journal Angle – 36°
Skew Angle – 2°
Gage Row Tooth Shape – A
ROTARY SPEED
150 – 60 RPM
IADC CODE 2-2-1
Non-sealed ball and roller bearing
FORMATION
Medium to hard strength with hard streaks(calcite, dolomite, limestone, anhydrites, hard shales).
CUTTING STRUCTURE
The TO22 has slightly shorter tooth length and more close spacing than TO21. Long crests in outer rows have self-sharpening hardfacing for maximum penetration and long life.
Journal Angle
36°
Skew Angle
2°
Gage Row Tooth Shape
A
ROTARY SPEED
150 – 60 RPM
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