The HR 120 is a multipurpose compact drilling rig suitable for medium to large diameter drilled shafts for drilling in any kind of soil by using a rotary system with kelly bar, augers and buckets. The HR 120 utilizes friction or interlocking kelly bars for various depths. The cabin has been designed to offer maximum efficiency and comfort for the operator which can also be equipped with an electronic depth counter, automatic levelling system, and air conditioning and heating system. The HR 120 comes mounted on expandable crawlers, but can even be mounted on a truck. In either version, the kelly bar does not have to be removed for transport, which decreases the transport costs, and set-up time on the jobsite. The HR 120 can be configured for works for Bored piles, Continuous Flight Auger (CFA), and even Diaphragm Walls by use of kelly.
Pictures
Working characteristics
| Works with Augers & Buckets | ||
| Max Diameter | 1.300 mm | 4.3 ft |
| Max Diameter (without lower mast extension) | 1.500 mm | 5 ft |
| Depths | 35 - 40 m | 114 - 131 ft |
Technical data
| Rotary | ||
| Nominal Torque | 120 KNm | 88,500 lbsft |
| Nominal Pull-Back/Pull-Down | 160 - 100 KN (cylinder 2.500mm) 170 - 135 KN (cylinder 4.300mm)* | 36,000 - 22,500 lbs (cylinder 8.2 ft) 38,250 - 30,375 lbs (cylinder 14 ft)* |
| Unloading speed/td> | 160 rpm | |
| Stroke | 2.500 - 4.300* mm | 8.2 - 14* ft |
| Winches | ||
| Main Winch Nominal Pullback | 120 KN | 26,500 lbs |
| Secondary Winch Nominal Pullback | 72 KN | 16,000 lbs |
| Engine | ||
| brand | CATERPILLAR | |
| Model | C6.6 | |
| Power | 129 KW @ 2.200 rpm | 173 HP @ 2,200 rpm |
| Hydraulic system | ||
| Hydraulic oil tank | 460 liters | 121 gal |
| Fuel tank | 145 liters | 38 gal |
| Crawler | ||
| Length | 4.180 mm | 13.7 ft |
| Width | 2.540 - 3.640 mm | 8 - 12 ft |
| Shoes | 600 mm | 2 ft |
| Weight | ||
| Approx Weight | 28 ton | 62,000 lbs |
| * on request | ||