ZEGA UJ21D Jumbo Drill Rig
| Technical specifications | |
| Hole range | Φ41 - 102 mm |
| Hole depth | 3,440 mm |
| Drill rod size | T38 - H35 - R32 * 3,700 mm |
| Face size (W x H) | 6,600 x 6,300 mm |
| Drilling coverage area | 35 ㎡ |
| Turning radius ( inner / outer ) | 2,650 / 5,000 mm |
| Dimension (LxWxH-roof up/down) | 10,680x1,700x2,190/2,890 mm |
| Weight | ≤12,000 Kg |
| Drifter | |
| Model | ZY104M |
| Impact power | 20 kW |
| Max. torque | 752 Nm |
| Impact frequency | 60 Hz |
| Rotation speed | 0 - 388 rpm |
| Weight | 170 kg |
| Air compressor | |
| Model | 7 bar |
| Working pressure | 0.3 m |
| Rated capacity FAD | 3 / min |
| Diesel engine | |
| Model | B3.9CS4-C100, (Cummins) |
| Rated power | 81 kW |
| RPM | 2,200 rpm |
| Electric motor | |
| Rated power | 55 kW |
| Voltage | 380 V |
| Reel cable length | 80 m |
| Feed | |
| Total length | 5,500 mm |
| Feeding length | 3,440 mm |
| Extension length | 1,600 mm |
| Tramming | |
| Tramming Speed | 12 / 4.5 km / h |
| Gradeability | 15° degree |
| Articulated steering angle | ±41°degree |
| Tramming brake | 2 independent circuits |
| Hydraulic jacks | 4 |
| Fuel tank volume | 63 L |
| Ground clearance | 260 mm |
| Boom | |
| Parallel holding | Complete |
| Boom extension | 1,200 mm |
| Boom swing angle L / R | ±35° |
| Boom lifting angle | +68/-40° |
| Feed tilt angle | +40/-68° |
| Feed swing angle | +3/-90° |
| Feed roll-over | 360°（Spiral） |
| Water system | |
| Flow rate | 66 L/min |
| Working pressure | 13 bar |
| Min. water inlet pressure | 2 bar |
