MODEL C370R BLASTHOLE DRILL SPECIFICATIONS RATED CAPACITY : Nominal hole size 10 5/8” (270 mm) to 12 ¼” (311 mm)dia by Rotary method . Total depth capacity: 160’ with 40’ long drill pipe STANDARD MOUNTING : CAT USA, 200mm Triple grouser track long with 13 bottom rollers and 3 carrier rollers each side. Independent hydraulic motor with Planetary gearbox drive for each track. Propel speed is 1.6 KMPH on plain grounds and 0.8 KMPH on Gradients. Gradeability upto 25% grades with Mast down. PULLDOWN AND HOIST : Pulldown is achieved through twin hydraulic cylinders and roller chain arrangement. 43’ head travel for handling 40’ long drill pipe. Bit Loading : 80,000 LBS. Hoisting capacity : 33,000 LBS. Standard feed rate : 12 FPM Standard hoist rate : 25 FPM Fast feed rate : 80 FPM Fast hoist rate : 170 FPM MAST : Electrically welded square and rectangular steel tube construction to withstand adverse drilling conditions. Mast is raised and lowered by two hydraulic cylinders with safety check valves. Working height of mast 52’ 2” for 40’ long drill pipe. ROTARY HEAD : Axial piston hydraulic motors driven top head drive through Planetary gearbox and spur gear reduction with a constant torque of 1,08,000 Inch-pounds at 0 - 150 RPM infinitely variable speed. AIR COMPRESSOR : Screw compressor with a capacity of 1880 CFM at 100 PSI. PRIME MOVER : CAT USA make Diesel engine model C23 or Cummins Make QSK23 800 H.P running @ 1800 RPM and drives Screw compressor from the flywheel and a set of Hydraulic pumps from the front PTO. Emission norms as per EPA TIER III. Fuel tank capacity: 1000 Lits DRILL PIPE HANDLING : Hydraulically operated 4 pod loader suitable for handling 10 ¾” dia , 40’ long drill pipe Hydraulic power breakout system and stem wrench are provided as standard. LEVELLING JACKS : Three hydraulic jacks – one front 200mm bore, 48” stroke and two rear 160mm bore, 48” stroke equipped with heavy duty telescopic guide tubes and lock check valves for safety. OPERATOR’S CAB : Fully enclosed steel fabricated, sound suppressed to 85dB, spacious, Double panelled and safety glassed cab with centralised Electric “Joy stick” controls for operator’s convenience. Adjustable seat for operator’s comfort and a seat for helper DUST CONTROL SYSTEM : NVE type dust control system, equipped with hydraulic motor driven suction blower and dry type filter cartridges. HYDRAULIC SYSTEM : Open loop hydraulic system for propel, rotation, feed, fan and auxiliary circuits. Axial piston, variable volume pumps - 2 no’s, 58 GPM each at 4000 PSI for Tram/Rotation circuit. Axial piston variable volume pump 18 GPM at 3000 PSI for feed circuit. Tandem gear pump 64 GPM at 3500 PSI for ROC fan circuit and 26 GPM at 2000 PSI for auxiliary circuit. Hydraulic oil reservoir with suction strainers and 10 micron return line filters and pressure filter for pilot line. Relief valves in all circuits. POWER BREAKOUT : Hydraulically operated Power Breakout system for easy removal of drill pipes. NIGHT LIGHTING : Adequate lighting to enable operation of drill at night times. Lights suitable for 24V, DC supply. ANGLE HOLE DRILLING : Angle hole drilling kit upto 25 in steps of 5. WINCH : Hydraulic winch is provided for handling accessories. ACCESSORIES : Four nos of Drillpipes, Two nos Spindle subs and one no each of Bitsub, Hammersub,Bit breakout baskets are supplied. OPTIONAL EQUIPMENT : Centralised Lubrication system Water injection system with water tank Shocksub for rotary head Rotary Deck Bushing Electronic depth counter Automatic Power breakout system Fire detection and suppression system Fast fuelling system.