Down The Hole Hammer Drils Rigs
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These are meant for
drilling borehole in hard compact formation (Rock
Drilling). They combine both percussion and rotary
action with air media. Sometimes Air Rotary DTH are
provided with mud pump for negotiating the overburden.
RATED CAPACITY:
115 mm diameter. Holes up to 120 meters, by DTH method
in hard rock and 165 mm diameter. Holes up to 120
meters. By mud rotary method in alluvial soil.
PULL DOWN:
Through hydraulic cylinder and wire rope, pull down
force variable up to 5000 kgs. " Micro-Feed" arrangement
provided
PULL DOWN (HOSTING):
Variable up to 6690 Kgs.
ROTATION HEAD:
Top Drive hydraulic motor driven through gear train
immersed in oil bath providing infinitely variable
speeds of O-100 RPM
AIR COMPRESSOR:
11.5 mt. 3/min at 7 Kg/cm2 (4000 CFM 100 PSIG) Rotary
screw type, driven by its own separate diesel engine.
MUD PUMP:
PRECISION' Model 'S-125 Duplex Double acting
reciprocating Mud pump having 5" stroke and fitted with
4" liner cable of delivering 450 LPM and a maximum
working pressure of 17.5 kg/cm2
MOUNTING:
4 x 2 drive truck chassis.
POWER UNIT:
Rig including mud pump driven by truck engine through
power take off.
MAST:
Heavy duty structural steel construction electrically
welded capable of handling 4.5 meters. (15') Long drill
rod. Mast raised and lowered by hydraulic cylinder.
HYDRAULIC SYSTEM:
Comprising of Hydraulic pumps, Control valves,
reservoir, etc. Total oil displacement around 130 LPM at
a pressure of 100 kg/cm2
LEVELLING JACKS:
4 Nos. Mechanical screw jacks provided
AIR LINE LUBRICATOR:
8 Ltrs. Capacity provided.
DRILL ROD RECOMMENDED:
73/76mm x 4.5 meters. (2 7/8" x 15') long.
OPTIONAL:
4 x 4 drive truck chassis for mounting
Choice of Compressors
Pull down system through hydraulic cylinder and chain
Hydraulic leveling jacks.
Mast Suitable to carry 3 mtrs. (10') long drill rod.
Auxiliary winch having 3000 kgs, capacity.
Water/Foam injection system.
ODEX system for simultaneous casing lowering
Hydraulic break out system |
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