- Application: Used for soft formation with low compressive strength and high drill-ability, such as shale, soft limestone, soft sandstone, gravel clay, soft dolomite, salt rock and coal seam, etc.
Compressive strength: 50-90 Mpa - Lug protection (G feature): Hard-metal and wear resistant carbide were applied to shirttail and shirttail lip. The shirttail features a “ terraced design”, which increases escape area and the bailing velocity and decrease cuttings regrind and wear on the bit
- Bearing structure (SGA): Bearing Type: RollerBall- RollerThrust Button/O ring seal
- Shirttail lip protection (W): Radial surface of shirttail lip is processed by milling groove, and wear-resisting alloy is applied inside to strengthen shirttail lip protection and increase the bearing.
SGA 515 WG 12 1/4"
- IADC: Code 515
- Connection Thread: 6 5/8” API
- Bit Diameter: 311 mm
- Weight on Bit: 40000-72000lbs
- Rotary Speed: 80-100pm
- Air Pressure: 0.2-0.4MPa
Record Performance at Codelco
Our Drillco tricones have achieved a new record performance, now at Codelco, Gabriela Mistral Division. Tricones have achieved a record useful life of 12694 meters, drilling in hard rock conditions. The Drill & Blast team at Gabriela Mistral Mine have been ...
Read full case study