Balancing USA
Balancing USA specialize in dynamic balancing machine calibration, balancing machine instrumentat……...
61R Raisebore from RUC Cementation Mining Contractors
RUC Cementation Mining Contractors has modified their fleet of Robbins 61R Raisebores to create a 'low profile' rig. This allows the Robbins 61R to operate in more confined spaces, where height restrictions prevent other equipment from operating.
Specifications:
Raise Diameter: Up to 2.1 meter nominal diameter
Raise Length: 100 meters
Pilot Hole Diameter: 11" Tri-cone bit size
Drive Type: Hydraulic Drive
Drive Speeds: 0-24 rpm
Ream Speeds: 0-6 rpm
Pilot Thrust: 109 tonnes at 24 MPA
Reaming Pull: 230 tonnes at 27.5 MPA
Vertical Drilling: 3m (retracted) / 4.5m (extended)
Dip Angle Limit: Vertical to 45º Flatter angles to 30º from horizontal with special supports
Power Requirements: 170 KVA, 1000 Volt, 3 phase, 50 cycle
Water Consumption: 52 litres per second at 100 PSI (approx). Water is recycled through settling sumps
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