JBR-20 CRAWLER MOUNTED BLAST HOLE DRILLING RIG

The JBR − 20 is a Crawler Mounted Blast Hole Drilling Rig especially designed for single pass blast hole drilling up to 650 foot ( 200 Meters) for a drill diameter 3½" to 4⅛" (89 mm to 105 mm). It is capable of rotary drilling with 9200 Kg pull up force and 0 − 100 RPM or may be used with down the hole drills when equipped with a high pressure air compressor.







TECHNICAL SPECIFICATIONS - JBR-20 CRAWLER MOUNTED BLAST HOLE DRILLING RIG
DRILLING DEPTH Maximum 4⅛" Þ Bore Holes, 200 Meter (650 Foot) by using 2" / 2 ½" Drill Rods Odex Dia. − 5" to 8" − 350 foot depth
PRIME MOVER Power required for the rig hydraulic is drawn from the crawler engine through the output PTO Shaft or from extra deck engine.
WORK METHOD DTH Drilling
MAST 6" Channel Structure Mast, Height − 5.5 Meter (18 Foot), Rod Handling − 120", Centralized Opening − 8"
PULL UP SPEED 37 Meter / Min (122 Foot/Min)
PULL UP FORCE 9 200 Kg / 20 240 lbs
PULL DOWN SPEED 55 Meter / Min (181 Foot/Min)
PULL DOWN FORCE 6 318 Kg / 13 900 lbs
HYDRAULIC SYSTEM 210 Kg/cm² (3 000 psi)
Oil Tank − 350 Liters, Oil Filters - SC²-100 - 01 no., SC²-75 − 01 no.
Double super system
REEVING RATIO 1:3
ROTARY HEAD Maximum Torque 303 Kg-Meter (26 400 lbs-inch)
ROTARY HEAD SPEED 0 to 100 rpm
WATER INJECTION PUMP 36 LPM , 40 Kg/cm² water pump driven by hydraulic motor
ADDITIONAL FEATURES Night Lights, Tool Box
SUITABLE COMPRESSOR 450 CFM/150 psi, 450 CFM/175 psi, 600 CFM/ 200 psi
AIR LINE LUBRICATOR Standard − 3 Liters
LEVELLING JACK Four Hydraulic Leveling Jack for accurate leveling drill point having separate lever
HYDRAULIC CYLINDERS Hydraulic Cylinders for Oscillation, Boom Raise, Boom Swing, Mast Raise, Mast Swing and Break Out Operation.