RT3-ST model allows to drill holes of diameters from 600 to 2500 mm to various depths up to 80 m.
Some unique features of design and construction give the machine a high degree of efficiency and reliability:
- 185 HP, GM 4-53T diesel engine with ZF 4WG181 torque converter
- 3-roller table, with forced lubrication system and damping mounting through teflon rigs
- 16 ton pull down system through two 760 mm stroke hydraulic jacks
- fully detachable basic frame and subframe for ease of transport
- special steel Kelly bars with throughout welded extruded driving ribs
- intake air filter.