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product details
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 feet (200 Meters) for a drill diameter of 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 an 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 Jacks for accurate leveling of drill point, each having a separate lever |
| HYDRAULIC CYLINDERS | Hydraulic Cylinders for Oscillation, Boom Raise, Boom Swing, Mast Raise, Mast Swing and Break Out Operation. |