The Mincon HDD70PR pull-reamer hammer uses our proven technology to define the benchmark for HDD tools. Thanks to its patented, reverse-airflow hammer cycle, it can reliably be used to ream pilot bores between 89mm (3½”) and 108mm (5¼”), to a full hole size of 229mm (9"). Mincon's design means that minimal feed and rotational force are required from the drilling machine, thanks to the high-pressure, high-volume air that powers the hammer.

• Bit Options: 178mm, 203mm, 229mm (7”, 8”, 9”)
• Thread type: 2⅜” – 3.5” API Reg Pin
• Minimum Air Package under 250’ (76m): 25.5 m³/ min @ 24.1 bar (900 cfm @ 350 psi)
• Minimum Air Package Over 250’ (76m): 35.42 m³ / min @24.1 Bar AC* (1,250 cfm @ 350 psi AC*)
• Rig Application: 9,100kg – 18,150kg (20,000 – 40,000 lbs)
• Available accessories: Remote Oiler / Foam Injection System
• Hammer lubrication: Mincon RDO Envirosafe Rock Drill Oil
• Recommended drilling fluids: Mincon Hole Control (Polymer) / Foam

*After-cooled air. Mincon recommends using after-cooled air compressors when ambient temperatures exceed 7 degrees celsius (45 degrees Fahrenheit).