The HEM receives hydraulic power from the excavator’s hammer circuit; no additional hydraulic plumbing is required. TEI solely uses their patented hydraulic drifters and feed systems to build the HEM. These technically advanced drifters have an Automatic Stroke Adjustment or ASA. This feature brings the hammer into an idle mode when the drill string is not engaged. When the operator puts down pressure on the drill string the ASA automatically brings the hammer up to full power. A built-in swivel accepts air, water or grout for all types of drilling including the installation of the popular hollow bars.
Large Excavator Mounts
The HEM (Hydraulic Excavator Mount) is the most popular drilling attachment manufactured at TEI Rock Drills. The stable excavator base with long boom combine to form an excellent drilling platform.