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DF420
• Hole diameter……………28-45 mm…….. (1 1/8″ – 1 3/4″)
• Weight……………………..41 kg …………… (90.4 lb)
• Percussion pressure……110/140 bar ….. (1 450/2 031 psi)
• Percussion rate………….100/115 Hz
• Percussion oil flow…….40/60 lit./min… (10.6/15.8 US gal/min)
• Rotation torque………….100 Nm………… (73.7 lb/ft)
• Rotation speed…………..245 rpm
Hydraulic System
• Gears main double pump for drilling unit
• Gears third pump for cooling and steering system
• Device of oil pre-heating system
• Oil cooling system
• Anti-jamming device
Engine
Perkins Mod. 1106D- E66TA TIER 3
• Direct injection, turbo intercooler
• 6 cylinders
• Power 158 HP – 116.5 kW at 2 300 rpm
Compressor
Model Tempest 6
• Air flow……………………2.6 m3/min……. (91.8 cfm)
• Maximum pressure…….6 bar…………….. (87 psi)
Hydraulic Dust Collector
• Mod. “Bermuda Chiocciola 500″
• Filtering surface 8 m2 (86 ft2)
• Suction capacity 500 m3/h (294 cfm)
• Automatic cleaning system of the filters
• Number of filters 4
Volumes
• Hydraulic oil tank………200 lt……………. (52.8 US gal)
• Hydraulic oil total……..260 lt……………. (68.7 US gal)
• Compressor oil………….9 lt……………….. (2.4 US gal)
• Diesel engine oil………..10.5 lt…………… (2.8 US gal)
• Diesel tank………………..125 lt……………. (33 US gal)
Tramming
• Tramming speed………..10.5 km/h……… (6.5 mile/h)
Electrical System
Carrier:
• Voltage…………………………………………… 12V
• Batteries…………………………………………. 1 x 12V 65Ah
• Alternator………………………………………. 65 A
Drilling unit:
• Voltage…………………………………………… 24V
• Batteries…………………………………………. 2 x 12V 100Ah
• Alternator………………………………………. 75 A
Carrier
• Cab rotation 370°
• Four-wheel drive
• Three mode steering
• Four hydraulic stabilizer legs
• Hydrostatic drive
• Heat exchanger supplementary air and oil
• Hydrostatic transmission at closet circuit with pump and variable-powered pistons hydraulic motor
