Very soft ground
Used in clay, silt and mud-like soils. This series has the longest teeth. Available with ball-journal, felt-journal and felt friction bearings.
04.3 / Bits
Choose the IADC group from the formation.
The wrong bit slows the right mast. Groups run from very soft ground to hard abrasive rock.
IADC 111 – 637 CODE MAPPING
Choose the IADC group from the formation.
The wrong bit slows the right mast. Groups run from very soft ground to hard abrasive rock.
Moderately soft formations
Advances quickly in gravelly and alluvial ground. Available with ball-journal, felt-journal and felt friction bearings.
Abrasive formations
Closely spaced hardened teeth, diamond-reinforced for abrasive formations. Ball-journal, felt-journal and felt friction bearings.
Soft rock and lower formations
Should be run at slow speed. Felt-journal and felt friction bearings.
Soft rocks
Smaller primary tooth tips for faster cutting. Use at slow speed. Felt-journal and felt friction bearings.
Soft to medium-hard formations
Shorter, more closely spaced teeth. Use at medium speed. Felt-journal and felt friction bearings.
Medium-hard and abrasive formations
Shorter tooth structure for harder rock. Used at medium speed. Felt-journal and felt friction bearings.
Hard and abrasive formations
Short conical teeth for crushing under continuous weight. Used at high speed. Ball-journal, felt-journal and felt friction bearings.