8 1/2" iadc 117 milled tooth tricone bit
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8 1/2" iadc 117 milled tooth tricone bit
When the Tricone Bit iadc 117 is working, the teeth on the main cone and the secondary cone of the cone are crushed by the formation while being subjected to the reaction force of the formation, causing the high-frequency sloshing of the cone along the axial direction, and the pressure difference between the inside and the outside of the bearing chamber due to the axial sway . The main function of the elastic reservoir is to balance the pressure difference between the inside and outside of the bearing to ensure that the bearing seal works under a small pressure difference.
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