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Core Drilling Rig

TBW coredrilling
Technical Description BHS - TC - Core Drilling Rig:

• DESCRIPTION: BHS, TC-40, is a Tractor Mounted Top drive all Hydraulically operated core Drilling Rig extracting main power from Tractor Engine, is designed for Geo-technical investigation (Geological survey), soil sampling application capable of drilling to a maximum depth of 150 Mt. (500 feet):

Core Drilling   SI   FPS

Drilling Sizes & Drilling Depths





NW Drilling (core 54.0 mm)


150 m


500 feet

NX Casting (88.9 mm Drilling)


50 m

  150 feet
Mast Structure:
Strudy structural channel type Mast of electrically welded construction, main members made out of heavy duty structural steel channels reinforced with suitable cross members, so that it will be strong enough to withstand the varying drilling loads.

Mast Length  

5500 mm

Rotary Head Travel


4500 mm

Centraliser Opening


200 mm

Raising & Lowering


With Hydraulic cylinder

Max. Rod handling Capacity


3 m

Tophead Rotary Drive:
Heavy-duty Hydraulic driven Top head Rotation unit having infinitely variable speed (0 to 500rpm) will be provided. This unit travels on the Mast and is of sturdy construction to absorb sudden & varying shock loads generally encountered during drilling operations.

Output Speed


0-500 rpm

Output Torque


0-500 rpm

Types of Gears


Spur Gears

Drive Motor type


OMT 200 / Orbital

No. of Motors


01 No.

Feed System:
Feed system is provided with adequate travel for handling Drill Pipes & Casing pipes upto 6 Mt. long. The feed system is actuated by a suitable Hydraulic cylinder with wire rope and pulley arrangement. The feed system has the following capabilities:

The feed system has the following capabilies.

Max. Pull Up Force


4500 kgf

Max. Pull Down Force


2400 kgf

Max. Pull Up Speed


40 m/min

Max. Pull Down Speed


65 m/min

Reeving Ratio (Wire Rope)



The feed system will be incorporated with Hold back arrangement to control and limit weight on bit, rapid and slow feed arrangement to suit the variable ground conditions.

Hydraulic System:

Max. Operating pressure


160 kg/cm2

Hydraulic Tank Capacity


300 Lts

Filtration (Nom.) Return Line


10 microns

Hydraulic Oil Cooler


40 GPM (Fin type Oil to Air)

Prime Mover:
Power required for the rig Hydraulics shall be drawn from the tractor engine through the out put shaft (PTO).

Stabilizers (Jacks):
System consists of three Hydraulic Leveling Jacks with 'Reverse flow restricted valves to ensure safe operation. Two numbers are at the front (Operator side) of the rig controlled by two separate valves and one jack at the rear side of the rig controlled by a single valve.



210 kg/cm2

No. of Jacks



Breakout Wrench:
The Drill Rig is equipped with Hydraulic breakout wrench for tightening and loosing of Drill pipes and The Hammer.

Cylinder Bore Diameter


80 mm


3 Inch



300 mm


12 Inch

Water Injection Pump:
Triplex plunger pump shall be used for DTH Drilling.



36 lpm

Max Pressure


40 bar

Winch Assembly:
Hydraulically operated wire line winch is mounted on mast to handle the Casing Pipes, Drill pipes and other handling tools.

Line Pull (Bare Drum)


800 kgf

Line Speed (Bare Drum)


40 mt / min

Air Compressor:
Air compressor of suitable capacity mentioned can be used for carrasying out the DTH drilling activity.

Air Compressor


450 cfm / 150 psi



Reputed make

Note: The compressor shall be mounted on separate two wheel single dummy axle waith mechanical stabilizers quantity one number.

Air Line Lubricator:
Air line lubricator of capacity mentioned below shall be mounted for the supply of lubricating Oil to the hammer.



600 cfm / 200 psi



Reputed make