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

:

8.23 mtrs (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/cm^{2 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