12 1/4" IADC437 high quality TCI tricone bit/roller bit for water well/oil well

tricone rotary bits tricone rotary bits for oil mine water well cutting tools machine

Specification
1.Sizes rang from 2 7/8" to 26"
2.Covers all IADC codes
3.Long life and full model
4.Reliable bearing system
5..Fast drilling rate
6.good after-sales service
7.API SGS Certificate

description of drill bit :
1)This series tricone bit use Sealed roller bearing structure. With rollers arranged in grooves recessed in the cone body, the size of the bearing journal is increased.
2)Surface of the high precision bearing heat treated by using advanced heat treatment process to improve the load capacity and service life of the bearing.
3)Preventing reflux structure has dual function, it can avoid air counterflow and dust enteri
ng into bearing when the air-compressor stop working accidentally, and separate air and water in order to avoid water entering into bearing when it works normally to prolong the life of bearing.
4)The bit bearing can be ball locked.
5)High precision bearing with two thrust faces. Balls lock the cone.Hardface heard bearing surface. Cone bearing inlaid with friction-reducing alloy and then silver-plated. Abrasion resistance and seizure resistance of the bearing are improved and suitable for high rotary speed.

advantage
1)soft with low compressive strength ,such as soft marl ,clay, unconsolidated sand-storm ,salt or hard shale,ect.
2)The world's latest sealing technology ,ensure the bearing is more effcient ,and more suitable for drilling at high rotary speed and high tem-perature working condition.
3)Bits bear is enhanced treatment ,and prolonging the bit working life,reducing the drilling cost.