D-Force Series

D-Force bits are currently available in 6-3/4" (171 mm) through 16" (404.4 mm) sizes.

The new D-Force series is engineered for highly abrasive and broken ground applications, often found in gold bearing formations as well as some copper and coal bearing formations. Advancements in this series provide added durability and increased penetration rates in the most challenging blast hole drilling formations.                                                                           

Features of the series include:

• Advanced Bearing Package- Bearings are engineered to minimize heating, providing a longer bearing life under a wide variety of operating conditions.
• Enhanced Shirttail Protection - Abrasion resistant Semi-Round Top (SRT) inserts are set into the Varel Sidewinder design, or "S" pattern, in the leg. This insert design, coupled with the body of the D-Force bit, creates an extremely strong gauge, beneficial for holding gauge while drilling ahead and effective in unstable/fracturing formations and collaring protection.
• Improved Cutting Elements - Precision cutting elements are further processed with Varel's patented High Energy Tumbling^TM (HET) method which produces a unique cutting structure surface that extends bit life and increases drilling rate.