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Blast Hole Drilling


Technical Description

JCR-BHD  BLAST HOLE DRILL
  JCR – BHD 303 JCR – BHD 306
GENERAL JCR-BHD 303 Model drill is a crawler mounted, self propelled, multi pass, hydraulically operated BLAST HOLE DRILLING RIG JCR-BHD 306 Model drill is a crawler mounted, self propelled, multi pass, hydraulically operated BLAST HOLE DRILLING RIG
DRILLING CAPACITY 114 to 171 mm (4 ½” to 6 ¾”) dia. holes as DTH or Rotary Drilling. Drilling depth 18 mtrs. (60 ft). 159 to 200 mm (6 ¼” to 7 7/8” ) dia. holes as Rotary Drilling and 152 to 171 mm (6” to 6 ¾”) dia. holes as DTH drilling. Drilling depth 150 ft (45 mtrs.).
MOUNTING Heavy duty tracks with adequate supporting rollers on both sides. Each track driven by an independent hydraulic motor.   Heavy duty tracks with adequate supporting rollers on both sides. Each track driven by an independent hydraulic motor
MAST Heavy duty structural steel construction. Mast height suitable for handling drill pipes upto 6.10 mtrs (20 ft) available. Heavy duty structural steel construction. Mast height suitable for handling drill pipes of 6.10 to 11 mtrs (20 to 36 ft) available
FEED Heavy duty single hydraulic cylinder with chain system with micro feed control. Heavy duty single hydraulic cylinder with chain system with micro feed control
ROTARY HEAD Single hydraulic motor with spur gear reduction system . Single hydraulic motor with spur gear reduction system.
AIR COMPRESSOR Single stage oil flooded, screw type with capacity ranging from  550 cfm ( 15 m³/min) and working pressure of 200 psi (14 kg/cm²). Single stage or two stage, oil flooded, screw type with capacity ranging from 600 to 1200 cfm (17 to 34 m³/min) and working pressure ranging from 100 to 350 psi (7 to 24 kg/cm²) available.
POWER UNIT Diesel Engine as Prime Mover for driving compressor and hydraulic system. Diesel Engine as Prime Mover for driving compressor and hydraulic system.
LEVELING JACKS Heavy duty, three nos. hydraulic jacks with check valves. Heavy duty, three nos. hydraulic jacks with check valves.
DUST CONTROL Options of Non Visible Emission (NVE) dust control system or wet type water injection system available.   Options of Non Visible Emission (NVE) dust control system or wet type water injection system available
CONTROLS All controls centralized for single man operation. All controls centralised for single man operation.
OPTIONAL:-
ANGLE HOLE DRILLING KIT  
AUTO INDEXING  
HYDRAULIC WINCH   
CENTRALIZED LUBRICATION SYSTEM.  
DRILL PIPE HANDLING Hydraulic barrel loader to hold upto three drill pipes of sizes 114 mm (4 ½”) (or) 76.2mm (3") dia and lengths upto 6.10 mtrs (20 ft). Hydraulic barrel loader to hold upto six drill pipes of sizes 100 to 140 mm (4” to 5 ½”) dia. and lengths ranging from 6.10 to 11 mtrs (15 to 36 ft) available.
 
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