DTH 300
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
 

Up 115 mm dia , to a depth of 100 Mtrs
 
ANGLE HOLE DRILLING :
 

upto 30 Degrees to vertical.

 
PULL DOWN PRESSURE:
 

Variable to 800 Kgs. (1760 lbs) Feed Length - Suitable for 3 Mts. Drill Rods.

 
HOISTING CAPACITY:
 

1200 Kgs. (2640 lbs)

 
AIR COMPRESSOR:
 

8.5 M3 at 7 Kg/cm2 (300 CFM at 100 PSI) Driven by independent diesel engine.

 
ROTATION HEAD:
 

Hydraulic Top Drive Head: Variable speed 0 to 60 RPM.
 
POWER UNIT:
 
For Rig from Truck Engine through power take off; independent diesel engine for compressor.
 
MOUNTING:
 

Truck, OPTIONAL Trailer, or Crawler Track.

 

LEVELING JACKS:

 

4 Nos. Mechanical jacks

 

MAST (BOOM):

 

Structural steel 4865 mm long.

Ground Clearance 300 mm
Sliding stroke 750 mm
Effective Downward stroke 450 mm.
 

DRILL ROD:

 

73/76 mm x 3 mts (2 7/8"/3" x 10') long.
 
HYDRAULIC SYSTEM:
 

Two individual Circuits, Maximum pressure 70 Kg/cm^2 ,Total Oil displacement 130 LPM

 
HYDRAULIC RESERVOIR:
 

Capacity 250 Liters.

 
AIR LINE LUBRICATOR:
 

8 Liters.

 
OPTIONAL:
 

Hydraulic Break Out Cylinder,

Dust Extractor
Foam/ Water injection Device.
 
SPECIAL FEATURES:
 

Suitable for Water Well drilling and exploration holes

Robust Components designed easily mounted on Truck
Quicker set up because of hydraulic cylinders.
Hydraulic pull down System
Hydraulic feed gives required pull down force while rotation control gives rotation to the Down the Hole Hammer.