high quality tricone drill bit for drilling \ 12 1\ 4 with API certificate

high quality tricone drill bit for drilling \ 12 1\ 4 with API certificate
 

Product description:

1. Cutting structure


Having different cutting actions, conical inserts are placed in permanent contact area and wedge inserts are placed in


alternative contact area so that the drilling efficiency is greatly improved. Wear resistance of cutting


structure is enhanced by setting diamond inserts in the permanent contact area of the cone where


inserts are severely worn. Tungsten carbide inserts are placed on cone top face to protect cone


body from abrasive erosion.


2. Gauge Structure


With active cutting gauge protection inserts on bit body, the bit has good gauge protection inserts


on bit body, the bit has good gauge protection and up drill capability


3. Bearing Structure


High precision journal bearing, Ball lock the cone. Hardface heard bearing surface. Cone bearing


inlaid with friction reducing alloy. Abrasion resistance and seizure resistance of the bearing are improved. Compared


with three cone bit, the leg bearing is bigger, so it can receive higher WOB and high reliability.