This is a vertical drill rig—a borehole drilling machine mounted on a mobile chassis and used for water well drilling, geotechnical exploration, and foundation work. The URB2A2 unit is installed on a ZIL-131 vehicle chassis, combining portability with substantial drilling capacity.
The machine is powered by a Mercedes-Benz OM366 diesel engine delivering 130 kW. The drilling head offers three rotation speeds: 140 rpm (producing 2010 Nm of torque), 225 rpm (1210 Nm), and 325 rpm (830 Nm), with a stroke of 5200 mm. The rotary mechanism can lift drilling tools at speeds of 0 to 1.25 m/s, with a lifting capacity at the elevator of 5100 kN. The drilling pump (NB-50) provides a maximum flow of 0.011 m³/s at a pressure of 6.3 MPa. An Atlas Copco XAS-186 compressor mounted on the deck supplies air at 0.7 MPa with a volume flow of 11.1 m³/min, enabling foam drilling when foaming agents are added to the air stream. The unit accommodates drill rods up to 200 mm in diameter.
In transport position, the rig measures 8080 × 2500 × 3500 mm and weighs no more than 10,100 kg (13,800 kg in working position); in working position, the overall height extends to 8380 mm. The base vehicle is a ZIL-131 from 1985 manufacture.
The equipment is reported to be in working condition. Ten drill rods of 50 mm diameter and 4700 mm length are included with the sale, along with rod wrapping keys. Optional additional equipment available at extra cost includes a second-hand hydraulic pump (€800), a rotator following capital repair (€2000), and a mud pump NB-50 (€2000).
This description was generated automatically from the listing details and may not reflect every specification. Please confirm with the seller before purchase.