PDTHR 800

Top drive DTH cum Rotary drill rig is capable of drilling in different formations such as Hard Rock by DTH, Unconsolidated / Alluvial formations using Air/Water/Foam flush by Rotary Method.

The PDTHR-800 is a top drive DTH cum Rotary drill rig built to perform across a wide range of ground conditions. It drills through hard rock formations using the DTH method and handles unconsolidated or alluvial formations through the Rotary method, using air, water, or foam flush. This dual-method flexibility makes the PDTHR-800 a versatile choice for demanding drilling projects.

Mounted on an Ashok Leyland BS4 6×4 carrier truck, the PDTHR-800 is powered by a robust ELGI air compressor delivering 1,500 CFM at 400 PSI, paired with a Top Head Drive rotary head offering up to 600 kg-m of torque and a rotation speed of 1–100 RPM. The rig features a 7.5-metre mast with a 31-ton capacity, a hydraulic feed system with 40 tons of pull-up force, and a mud pump for circulating drilling fluid downhole. With DTH drilling capacity of 304–355mm and Rotary drilling capacity of 304–406mm, the PDTHR-800 is engineered to deliver reliable, high-performance drilling across large-scale projects.

 

Specifications  
Carrier Truck  
Make Ashok Leyland BS4
Model 6×4 (10 Tyres)
Support Truck  
Make Ashok Leyland BS4
Model 6×4 (10 Tyres)
The Truck is for Mounting Compressor & Mud Pump.  
Air Compressor  
Make ELGI
Maximum Air Flow 1500 CFM
Maximum Rated Pressure 400 PSI Fuel Tank for the compressor
CARRIER TRUCK  
Make ASHOK LEYLAND MAKE WITH BOOGIE SUSPENSION
Model 10 TYRE(6X4)
Technical Specification  
Air Compressor  
Make ELGI
Model 1500/400
CFM 1500
PSI 400
Hydraulic Circuit  
Max Operating Pressure 220 kg/cm2
Hydraulic Tank Capacity 750 Litres
Filtration Non – Returnline 10/25 Microns
Prime Mover Truck
Make Ashok Leyland
Model 2523
Drive 6 x 4
Gross Vehicle Weight 25 MT
Engine Rating 230 HP @ 2200 rpm
Prime Mover Truck
Make Ashok Leyland
Model 2523
Drive 6 x 4
Gross Vehicle Weight 25 MT
Engine Rating 230 HP @ 2200 rpm
Prime Mover Truck
Make Ashok Leyland
Model 2523
Drive 6 x 4
Gross Vehicle Weight 25 MT
Engine Rating 230 HP @ 2200 rpm
Rotary Head Top Head Drive
Torque 600 Kg-M (Optional: 750kgf
Rotation Speed 1 -100 Rpm (Optional: 0-85 rpm)
Mud pump  
Mud Pump – Reputed Make 10/7”1/2
Detroit 4-71 Diesel Engine – Rated 155 HP  
Airline Lubricator  
Capacity 1500 cfm/400 psi
Tank 13 Ltr
Main Hoist Assembly  
Line Pull ( Bare Drum) 3000 Kgf
Max Line Speed 40 M/Minute
Wire Dia 16 mm
Drive Hydraulic
Auxillary Winch  
Line Pull ( Bare Drum) 3000 Kgf
Max Line Speed 40 M/Minute
Feed System  
Pull Up 40 ton
Pull Down 20kgf
Hoisting Speed 44 Mtr/Minute
Mast  
Max Capacity 31 tons
Height 7.5 mtr
Mud Pump  
A mud pump or drilling pump is used to circulate drilling mud (also referred to as drilling fluid) downhole during drilling operations.  
Technical Specifications:  
Make Reputed Make
Model 10” x 7 ½”
DRILLING RODS  
Make PRIME RIGS LIMITED
Model 4.5” X 15ft
Rod Size 4.5
DTH Hammers  
Technical Specifications:  
Make: PRIME RIGS LIMITED
Rod Size 6.5”, 8”
DTH Button Bit  
Technical Specifications:  
Make: PRIME RIGS LIMITED
Size 6.5”
Available Ranges 3”-18”
Drag Bit  
Technical Specifications:  
Make: PRIME RIGS LIMITED
Size 12 ¼”, 14 ¼”, 17 ¼”
Over Burden Bit  
Make: PRIME RIGS LIMITED
Size 8.5″ to 12
Drilling Method Hole Diameter
Mm Inches
DTH 304 – 355 12 “ – 14″
Rotary 304-406 12”- 16”
Cylinders Bore Stroke
Stabilizing Cylinders 4 Nos 125 mm 610 mm
Mast Raising Cylinder 100mm 650 mm
Feed Cylinder 160 mm 2350 mm
Breakout Wrench 80 mm 300 mm

Frequently Asked Questions

What drilling methods does the PDTHR-800 support?

The PDTHR-800 supports both DTH drilling for hard rock formations and rotary drilling for unconsolidated or alluvial formations, using air, water, or foam flush methods.

What hole diameters can the PDTHR-800 drill?

The PDTHR-800 drills 304–355 mm (12–14 inches) diameter holes using the DTH method and 304–406 mm (12–16 inches) diameter holes using the rotary method.

What powers the PDTHR-800’s drilling operations?

The rig is equipped with an ELGI air compressor delivering 1,500 CFM at 400 PSI, providing strong and consistent air power for both DTH and rotary drilling.

What is the mast capacity of the PDTHR-800?

The PDTHR-800’s mast stands 7.5 metres tall with a maximum capacity of 31 tons, supporting stable and efficient drilling across demanding project conditions.

What truck is the PDTHR-800 mounted on?

The PDTHR-800 is mounted on an Ashok Leyland BS4 6×4 carrier truck, with a matching support truck used for mounting the compressor and mud pump.

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