Direct Rotary Drills [DR 500]
ROTARY DRILLS They are meant for drilling in alluvial and semi-consolidated formations and for virgin areas in connection with exploration program, by using drilling mud fluid.
   
MODEL DR –500 HYDRAULIC SYSTEM
Rated capacity  : Drill Rod  Hole Dia   Depth Pump type : Fixed displacement vane type.
    60 mm   152 mm 198.2 mtrs Discharge : 60 LPM at 70 Kg./cm2
    73 mm 203 mm 152.5 mtrs Drive : Direct coupled
    89 mm 305 mm 91.5 mtrs      
MAST :   ENGINE : Truck / Trailer / Skid
Construction : Electrically welded tubular steel construction Model : Truck Engine  Diesel  Diesel
Height- Standard : 5.48 mtrs. (above rotary table) BHP   ----                   40         40
-  Optional : 8.23mtrs (above rotary table) Speed (RPM)   ----                   2000      2000
Gross Load capacity : 9091 kgs      
Crown Block : 2 sheaves for wire lines; TRANSMISSION : 4 or 5 forward and 1 reverse
    Angled over the drums; KELLY : 73 mm x 4.27 Mtrs.
    2 spring mounted pull-down     Long Round 3 flutted.
    Tension sheaves. LEVELLING JACKS : 4 Nos. mechanical
Raising & Lowering : Two double acting Hydraulic cylinders MOUNTING : Truck or Trailer
      OVERALL DIMENSION : Approx. Mast lowered position
ROTARY TABLE :       Length     :  60 Mtrs.
Opening : 120 mm     Breadth   :  30 Mtrs.
Construction : Spiral Bevel Gears; Oil bath lubrication. Roller bearings.     Height     :   3.20 Mtrs.
Drive : Torque tube      
           
Clutch : Disc type      
Retraction : 356 mm Hydraulic actuated      
PULL DOWN :        
Type : Chain, Hydraulic actuated.      
Feed : 3.96 Mtrs.      
Max. Pull down load : 2273 Kgs OPTIONAL :    
     

* PRECISION make , S-150 Duplex double acting mud pump having 139.7 mm bore and  152.4 mm stroke at a maximum of 100 strokes/min with a discharge of 915 LPM at 17.99 Kg/cm2 pressure

DRAW WORKS : Two identical Drums. * DTH attachment for drilling in hard Rock by DTH   method.
Barrel dia x Length : 133 mm x 127 mm * Hydraulic leveling jacks with safety check valves.
Flange dia : 305 mm * Hydraulic Break out Wrench.
Pull Capacity : 2273 Kgs. (single line bare drum)                          
Clutch : Multi disc type
Brake : High leverage mechanical
Drive : Torque tube
MUD PUMP : STANDARD
Make : Precision
Model : S-125
Type : Duplex double acting
Bore x Stroke : 114.3 mm x 127 mm
Max. Stroke/Min : 110
Pressure & Discharge : 550 LPM at 13.85 kg./cm2
Drive : `V’ Belt
Clutch : Friction disc type