Boart Longyear LM-90 Diamond Core Drill
The LM™90 is the largest Boart Longyear underground diamond coring rig and is suited for drilling deep holes. Equipped with a 29,000-lb feed frame, this drill provides high pullback force as well as a relatively quick rod-handling rate. The feed cylinder is reversible for increased up-hole drilling capacity.
The rig is modular in design with a number of options which make it easier to tailor to specific needs and to upgrade when requirements change. With the assistance of a positioner and a turntable the drill is capable of drilling holes in all angles from vertically up to vertically down. The drill uses an electric motor to power the hydraulics on the machine.
DA Smith's LM90 has been upgraded from a 120 hp motor to an LM110 150 hp motor for increased capacity.
Boart Longyear LM-90 Technical Overview