Chemgrout CG-680 MixerChemgrout mixer unit has had all of its consumable parts replaced and has been painted and repaired

Chemgrout CG-680 Mixer


Geoprobe 7720 DT

Geoprobe 7720 DT

Custom Air Core Drill

Currently under offer



This is a custom-built air core drill that has low engine hours of 3588 and is fitted with a Sullair 390CFM x 200PSI onboard compressor. The drill is in good operating condition and is being sold with some additional drilling rods, innertubes and equipment

Engine : Cummins 6 CT 8.3 – C , Power Rating 210 bhp  157 kw under rated by 25 bhp  Peak Torque 567 lb-ft 769 Nm  at 2,200 RPM

Compressor : Sullair series 16 , Output Rating , 390 cfm @ 200 psi Max 2,200 RPM , Required Power 110 bhp over rated by 15 bhp

Hydraulic Pumps: Twin Danfoss pumps, Required Power 90 bhp, Max

Head Drive: Hydco 250 twin drive modified, Rotation Speed  0 / 250 rpm, Torque 1,800 Nm, Travers Speed 1.2 metres per second

Pull Down :  5,000 kg

Pull Back: 7,000 kg

Drill Depth: NQ Air Core 150 metres, BQ Air Core  220 metres, Reverse Air Blast 110 metres, Diamond Core 350 metres

Cyclone: Rotary splitter speed 0 / 180 rpm, raise and lower  0 / 1 metre, arc of swing 230 degrees, Sample Collection: three-pot magazine. bag or open for bulk sample

Water Injection pump : Bean , 0 / 28 lpm @ 1,500 psi

Cooling Fans : Two-stage electric hi-flow , Fans 6 x 40 cm, Flow Rate  2,100 cfm each,

Rod Rack: Hydraulic raise and lower arc 80 degrees, up and down dump  0.8 metres: Capacity  30 NQ AC rods / 90 metres

Mast Specification : Length: 4.6 metres.  Width: 0.21 metres,  Depth: 0.2 metres, Arc 0 / 93 degrees, Feed Drive: hydraulic planetary with internal braking

Dump Ram: internal, Hydraulic rod clamp, make and break clamps. Head drive safety brake.

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