Tri-cone bit type

4 3/4'' 126

Diameter

120.7mm

IADC

126

API Pin Connection

2 7/8'' API REG

WOB(KN/mm)

0.35~1.00

RPM(r/min)

150~70

Applicable Formation

Soft with low compressive strength and high drillability, such   as shale, clay, salt bed and soft limestone, etc.

Features

This   bit can sustain higher WOB under normal rotary speed.

  Note:   the upper limits for the bit weight and rotary speed recommend in the table can   not be      used at the same time.