The results are promising. The TERRA-JET 3008 ES provides HDD bores in lengths up to 100 m (420 ft) and backream diameters up to 420 mm/16.5”. The bores may have curves with a minimum bending radius of R = 24 m. The high torque of 3’000 Nm and the high thrust and pullback forces of 80 kN (8 tons) are unique. It allows HDD bores in hard ground.
- The TERRA-JET 3008 ES can be pit or surface launched. This HDD system has a modular design. Its main components are the pit frame, the hydraulic power pack and the mixing+pumping station.
With its 2 separated hydraulic circuits for thrust and rotation, the TERRA-JET 3008 ES can operate simultaneously at maximum torque and maximum thrust or pullback force. The hydro-chain-drive has the highest efficiency rate, low wear and is dirt resistant. Due to the movable break-apart-system.
- The PERKINS Powered 3008 ES drives the pit frame and the mixing+pumping station. As an option, it can be equipped with a Diesel particulate filter (DPF), which fulfils the strictest anti-pollution norms.
- The TERRA-JET 3008 ES is equipped with a second generation Automatic Drilling and Backreaming System (ADBS).
This patented system automatically and within milliseconds adjusts the working speed of the drill to suite the ground conditions. In soft ground the drill operates at maximum speed, in hard ground slowly, but always at the optimum speed.
This allows the operator to operate the drill at maximum efficiency in a controlled and relaxed manner and prevents the drill rods and drilling tools from being overloaded. During the pilot bore the ADBS controls the thrust force. If the drill head hits an unexpected obstacle, the ADBS stops the drilling speed immediately and drills very slowly through the obstacle. All automatically!
Technical Data * Depending on ground conditions
** Depending on drill rod size
Technical specifications can be changed without previous notice.
pullback force8 to (80 kN)17’600 ft.lbs (9 US tons) thrust force8 to (80 kN)17’600 ft.lbs (9 US tons) driving power44 kW (60 PS)44 kW (60 HP) torque, 1st speed3’000 Nm1’920 ft.lbs drill rod rotation speed, 1st speed0 – 63 U/min0 – 63 rpm drill rod rotation speed, 2nd speed drilling fluid volume100 l/min26 gpm maximum drilling fluid pressure70 bar1000 psi drilling speed – quick gear14 m/min46 ft/min14 m/min46 ft/min drilling speed – at full load14 m/min46 ft/min noise emission in 7 m distance–– noise emission at operators ear–– pilot bore diameterø 60 – 100 mmØ 2.4″ – 4″ maximum backream diameter*ø 420 mmø 16.5″ maximum drilling length *150 m500 ft drill rods, length1.0 m3.3 ft drill rods, diameterø 57 / 54 mmø 2.25 / 2.12 “ minimum turning radius**24 m80 ft Dimensions pit cradle LxWxH2.0 x 0.90 x 1.25 m6.6 x 3.0 x 4.1 ft dimensions hydraulic power pack LxWxH1.95 x 0.94 x 1.75 m6.5 x 3.1 x 5.78 ft dimensions Mixing and Pumping Station LxWxH1.45 x 0.75 x 1.0 m4.8 x 2.5 x 3.3 ft weight of the pit cradle1’000 kg2’200 lbs weight of hydraulic power pack900 kg1980 lbs weight of Mixing and Pumping Station205 kg451 lbs