The new MMB326 hydraulic drifter rock drill attachment from TEI Rock Drills pairs with the Brokk 300 and allows for drilling of up to 3-in. holes in concrete, rock and compact soil. The attachment is manufactured with a lightweight, compact TE326 drill head, featuring patented technology to improve longevity and productivity.
At just under 30 in. long, the MMB326 delivers 200 ft.-lb. of impact energy at 3,480 blows per minute. The drill also produces 250 ft.-lb. of torque and reaches rotation speeds of up to 250 rpm, which Brokk says makes it a more accurate and faster alternative to jackleg drilling through brick, concrete and rock. The manufacturer adds that the combination also eliminates fatigue caused by operating the heavy manual tools and promotes safety by allowing operators to stand farther away from the drilling site.
The drill head itself (TE326) is a versatile hydraulic drifter that incorporates TEI’s patented Automatic Stroke Adjustment (ASA) technology. The high-frequency and smooth operation prolongs the drifter and tool life, increasing productivity and profits for the user by reducing downtime and parts costs. Additional features, such as variable rotation speeds up to 250 rpm, help to minimize the risk of jamming, while the reversible rotation motors deliver high torque to ensure powerful drilling.
In addition, the drill attachment is quieter than pneumatic handheld alternatives, allowing construction crews to use the equipment in locations governed by noise-control ordinances, such as in and around apartment buildings, high-rise towers and other residential areas.
Upon purchase, a certified TEI technician will set up the attachment on the Brokk machine. If required, operational training can be provided.
- Expanded hole range up to 3 in. (76 mm) in diameter
- 360-degree positioner for drilling in a variety of positions
- Option for use as manual centralizer for rock drilling or with a hydraulic clamp for extension drilling and roof bolting
- Available in 5.9 ft. (1.8 m) or 7.8 ft. (2.4 m) mast lengths
- Direct integration with the Brokk controls