TCI tricone rock bit - all kinds

description of drill bit:

(1)Bearing Structure of this series tricone rock bit :
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.

(2)Seal and Lubrication of this series tricone rock bit :
The advanced metal seal package consists of two metal seats and two elastic energizers. Compressed energizers ensure good contact being kept on two sealing surfaces of metal rings by elastic force, and achieve the bearing seal. In the drilling, metal seal are relatively dynamic, and the energizers are static. This will improve the reliability and durability of bearing seal. The pressure compensator system and advanced grease can greatly increase the lubricating reliability.

TCI bits series

437 Soft Formation TCI Tricone Bits

The 437 tci bits are used to drill low compressive strength,very soft formations. TCI bits maximize the use of bothconical and chisel tungsten carbide inserts of large diameters and high projection. This cutting structure desigh, combined with maximum cone offset,result in high bit penetration rates. The deep intermesh of cutter rows prevents bits bailing in sticky formations.

517 Medium Formation TCI Tricone Bits

The 517 features aggressive chisel tungsten carbide insert on the heel rows and inner rows. This design provides a fast drilling rate and added cutting structure durability in medium-to-medium hard for-mations. The HAN rubber O-ring provides adequate sealing for bearing durability.

617 Medium-Hard Formation TCI Tricone Bits

The 617 features robust chisel tunsten carbide inserts on the heel row and conical on the inner rows. This design provide a fast drilling rate and added cutting structure durability in medium to medium hard formations. The HSN rubber O-riprovides adequate sealing for bearing durability.

637 Hard Formation TCI Tricone Bits

The 637 bits can be used drill hard and abrasive forma-tions. Ware-resistant tungsten carbide inserts are used in the outer rows to prevent loss of bits gauge.maxmum numbers of hemisphercal-shaped inserts are used in all rows to provide cutter durability and long life.

Steel tooth bit series

114-117 Soft Formation Tooth Bits

The 114-117bits are used to drill low-compressive strength,soft formations.Long projection tooth lengths are used on high offset cones to provide the greatest penetration rates possible .Wear-resistant hard facing is used to control tooth wear.Onthe softest bit types this hard facing completely covers the bit teeth.

127 Medium-Hard Formation Tooth Bits

The 127bits are used to drill high-compressive strength,medium hard formations.Short projection teeth with reduced crest length are used in this series of bit designs.Durable hard facing is applied to reduce tooth wear.