Rotary Dando Terrier
Lightweight, compact and easy to manoeuvre through tight spaces, the Rotary Dando Terrier rig is capable of a wide range of drilling techniques including continuous flight & hollow stem augering, tricone & drag bits and rotary core drilling as well as DTH hammers.
The rig can also be fitted with mast dump to allow angle drilling up to 45 degrees from vertical. Supplied with Dando’s new track mounted compressor unit, providing 400cfm at 170psi, the first machine sold is being used for gold exploration in the deep jungles of the Congo using Rotary Air Blast drilling. The Terrier’s ultra-small footprint and easy manoeuvrability means the rig is particularly suited to work in jungle and forest environments, causing very little disturbance to its surroundings.
HYDRAULIC ROTARY DRILLING MAST AND HEAD
Driven by a hydraulic motor fitted with a 7 : 1 ratio gearbox with manual gear change, providing full controlled power and rotational speeds in forward or reverse. Integral side inlet water swivel with BW Rod connection fitted to travelling carriage plate with bolts.
Maximum Torque 155.6 ft-lb, 211Nm
Maximum Spindle Speed 360 rpm
Maximum Torque 1089 ft-lb, 1477Nm
Maximum Spindle Speed 52 rpm
Guide Ring: 170mm effective ID
MAST AND CARRIAGE ASSEMBLY
A fabricated welded steel box section construction fitted with a pair of wheels and two levelling jacks. Hydraulically raised and lowered by a single double-acting ram on the main Terrier undercarriage and attached via the pivot frame assembly.
Height= 2195mm (2.2m stroke); 1962mm (1.6m stroke)
FEED AND HOIST SYSTEM
Provided by a single double-acting ram transmitting adjustable hydraulic load to the rotary head.
Stroke: 2.2m to accommodate 2.0m effective length drill rods.
Stroke: 1.6m to accommodate 1.0m effective length drill rods.
Feed force: 1000kgf
CONTROLS AND HYDRAULIC POWER
Hydraulic functions of the hoist/feed and rotation are controlled from the main hydraulic control valve on the Terrier. Hydraulic power is supplied via PTO from the main Terrier hydraulic power pack.
Weight of Dando Terrier base assembly: 754kg
Weight of rotary head mast assembly attachment:
Long Mast 2.2 Stroke: 359kg
Short Mast 1.6 Stroke: 265kg
Set of stabilising jacks.
Chalwyn Valve and Spark Arrestor
Wireless Remote for Tracking
Seismic Drilling in Brazil
Angle Drilling in Spain
Gold Exploration in Congo
Angle Drilling Terrier at Dando's Factory in the UK