Product Description
RC UNDERGROUND MAST
The Mast assembly is a lightweight short-feed mast designed for reverse circulation drilling in underground mining.
The assembly consists of the mast frame with a direct feed carriage to which a rotation head is mounted. A slips, breakout and foot clamp assembly can be mounted at the
lower end of the mast frame with a mast foot attached to that.
An extendable beam can be attached to the top of the mast frame as a ceiling prop when required.
Feed: Direct feed, hydraulic cylinder 2.5” with end stroke cushioning
Stroke: 1800 mm
Pull Up force (@ max P): 66.5 kN (6.7T)
Pull Down force (@ max P): 42.5 kN (4.3T)
Speed Up (@max flow): 0.55 m/s
Speed Down: 0.73 m/s
Rotation Head: 2 motor (160cc), oil flooded with integrated dual swivel and blowdown valve.
Maximum Oil Flow: 150 l/min
Maximum Oil Pressure (continuous): 210 bar
Torque (@ P max): 4100 N/m
Rotation Speed (@ max flow): 106 rpm
Breakout: Single hydraulic breakout. Swing in/out, to be used in conjunction with foot clamp.
Max torque: 14,000 Nm
Gripping range (with optional jaw sizes): 67 – 142mm
Foot Clamp: Dual opposed gas springs with hydraulic release
Minimum clamping force: 95 kN
Jaw Size: options to fit drill string
Stinger: Hydraulic extension: 610mm
Dimensions;
Overall length: 4575 mm (with stinger). 3172mm (without stinger)
Overall width: 946mm. Overall height: 692mm
Approximate weight: 1100kg
