DOWN-THE-HOLE HAMMER DRILL  
   
RATED CAPACITY
 

165 mm dia. Holes upto 180 mtrs. by DTH method in hard rock and 203/215 mm dia. Holes upto 180 mtrs by mud rotary method in alluvial soil. Larger Hole by mud Rotary method through reaming operation.

 
PULL DOWN:
 

Through hydraulic cylinder and wire rope. Pull down force variable upto 12,500 Kgs. Micro-Feed’ and Hold-back arrangement.

 
PULL UP (HOISTINNG)
 

Variable upto 8500 Kgs.(High speed hoisting provided.)

 
ROTATION HEAD
 

Top drive hydraulic motor driven through gear train immersed in oil bath providing infinitely variable speeds of 0-100 / 0-150 RPM.

 
AIR COMPRESSOR
 

17 mt.3/min at 10 kg./cm2 (600 CFM ,150 PSIG), Rotary screw type, driven by its own separate diesel engine.

 
MUD PUMP
 

‘PRECISION’ make model S-125 duplex double acting reciprocating mud pump having 5” stroke and fitted with 4.1/2”  liner capable of delivering 550 LPM and a maximum pressure of 13.85 Kg/cm2

 
MOUNTING
 

‘4 x 4 / 6 x 4 drive Ashok Leyland / TATA Truck Chassis.

 
POWER UNIT
 

Rig including mud pump driven by truck engine through power take off. Compressor driven by independent diesel engine.

 

MAST

 

Heavy duty structural steel / tubular tube construction electrically welded capable of handling 6.1 mtrs. (20’) long drill rods. Mast raised and lowered by hydraulic cylinder. 

 

HYDRAULIC SYSTEM

 

Comprising of hydraulic pumps, control valves, reservoir, etc.

 

LEVELLING JACKS

 

4 Nos. Hydraulic leveling jacks with safety check valves provided.

 
AIR LINE LUBRICATOR
 

13.5 Ltrs. Capacity provided.

 
WATER/FOAM INJECTION SYSTEM
 

Provided on Rig.

 
 
AUXILIARY WINCH
 

5000 Kgs. Capacity hydraulic motor driven Auxiliary winch provided.

 
BREAK-OUT SYSTEM
 

Hydraulically operated. 

 
DRILL ROD RECOMMENDED
 

89mm OD / 73mm OD - 6 Mtrs. / 3 Mtrs. external flush type drill rods with joints as per API standard.

 
OPTIONAL
 

Mounting  on two truck concept

Choice of Compressors
Reciprocating pump operated water injection system
Hydraulically operated jib Boom  on the top of the mast.
ODEX system for simultaneous casing lowering