Model Number: 15 1/2 S115G(IADC:115) Brand Name: TRANSTONE Key Specifications/Special Features: Cutting structure:Wear-resistant of teeth is enhanced with premium tungsten carbide hardfacing on the tooth surfaces for steel tooth bitDurability of premium tungsten carbide inserts is improved with new formulas and new techniques for insert bitGauge structure:

Multiple gaugeprotection with gauge trimmers on the heel of cone, tungsten carbide inserts and hardfacing on the shirttail increases gauge holding capability and bearing lifespan

Bearing structure:

1. High precision rollerbearing with two thrust faces

Balls lock the cone:

1. Thrust faces hardfaced with wear resistant alloy
2. Abrasion resistance and seizure resistance of the bearing are improved

Seal and lubrication:

1. Premium HNBR O-ring, optimal seal compression and curved seal structure can enhance the seal performance
2. The pressure compensator system and advanced grease can greatly increase the lubricating reliability

Product applications:

1. It is suitable for various formations and achieves high RPM under low to medium WOB application