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.
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.
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.
Top Drive hydraulic motor driven through
gear train immersed in oil bath providing
infinitely variable speeds of O-100 RPM
11.5 mt. 3/min at 7 Kg/cm2 (4000 CFM 100
PSIG) Rotary screw type, driven by its own
separate diesel engine.
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
4 x 2 drive truck chassis.
including mud pump driven by truck engine
through power take off.
Heavy duty structural steel construction
electrically welded capable of handling 4.5
meters. (15') Long drill rod. Mast raised
and lowered by hydraulic cylinder.
Comprising of Hydraulic pumps, Control
valves, reservoir, etc. Total oil
displacement around 130 LPM at a pressure of
4 Nos. Mechanical screw jacks provided
AIR LINE LUBRICATOR:
Ltrs. Capacity provided.
DRILL ROD RECOMMENDED:
73/76mm x 4.5 meters. (2 7/8" x 15') long.
4 x 4 drive truck chassis for mounting
Choice of Compressors
Pull down system through hydraulic cylinder
Hydraulic leveling jacks.
Mast Suitable to carry 3 mtrs. (10') long