5 1/4” TRICONE BIT IADC437/517/537/617/637

Structure Characteristics

1. In the form of roller sealed bearing,so as to improve the bearing capacity .
2. The bearing composite rubber sealed ring adopts the high saturated nitrile rubber with high wear resistance, which has better wear resistance and high temperature resistance; the compression ratio and section diameter of the seal ring are optimized to improve the sealing performance of the seal ring; the assembly structure of the embedded seal ring with the inner hole groove of the roller is adopted, so that the sealing of the drill bit can be kept effective even if the shirttail t is worn, and the service life of the drill bit can be prolonged.
3. Vacuum pumping and oil filling are adopted, and the oil storage pressure balance system can balance the internal and external pressure difference of the bearing, and provide good lubrication guarantee for the bearing system.
4. The bit is made of cemented carbide inserts with high strength and toughness for oil and water well,mining,construction,Horizontal Directional Drilling ( HDD ) etc.

Product specification

Application

IADC 437  
It is suitable for soft and medium- soft strata with low compressive strength and high drillability, such as clay, mudstone, chalk, gypsum, salt rock, soft shale, and soft limestone.

IADC 517/537  
It is suitable for soft formation with low compressive strength, such as mudstone, gypsum, salt rock, soft shale, and soft limestone.

IADC 617  
It is suitable for medium- hard formations with high compressive strength, such as hard shale, limestone, sandstone, and dolomite.

IADC 637  
It is suitable for hard formation with high compressive strength, such as sandstone, limestone, dolomite and anhydrite, and marble.