Pneumatic Powered Portable Roofbolters: King Cobra
Since the late 1980's, MPI has represented King Cobra Mining Equipment (Rambor) products in North and South America. Our King Cobra equipment continues to be used in some of the harshest underground environments. The products have evolved over the past three decades and are continuously improving.
MPI offers the King Cobra Top Mount Roofbolter, the Mini King Cobra Roofbolter and the King Cobra Rib Drill.
Pneumatic Drills Comparison
TECHNICAL SPECIFICATIONS
| MINI
KING COBRA
ROOFBOLTER |
KING COBRA
TOP MOUNT MAXI
ROOFBOLTER |
KING COBRA
RIB DRILL |
| High Speed |
High Torque |
| SPECIFICATIONS |
| Motor Size (gear ratio) | – | 95mm (14-39) | 70mm (11-42) | – |
|---|
| Operating Pressure (psi) | 100 | 100 | 100 | 60 |
|---|
| Drill Torque Range (ft-lb) | 150 @ stall | 149 @ stall | 200 @ stall | 58 @ stall |
|---|
| Torque Through Clutch (ft-lb) | 250 | 250 | 250 | – |
|---|
| Rotational Speed (rpm) | 750 | 900 | 700 | Variable from
0-1400 |
|---|
| Air Consumption (cfm) | 120 | 100-120 | 100-120 | 90 |
|---|
| Drill Weight (lb) | 70 | 74-130
(depending on model) | 74-130
(depending on model) | 20 |
|---|
| Noise Level (dBA) | 94 | 84-95 | 84-95 | 105 |
|---|
| CYLINDER THRUST |
| 1st Stage (lbF) | 2500 | 2500 | 2500 | N/A |
|---|
| 2nd Stage (lbF) | 2000 | 2000 | 2000 | N/A |
|---|
| 3rd Stage (lbF) | 1500 | 1500 | 1500 | N/A |
|---|
| 4th Stage (lbF) | 1000 | N/A | N/A | N/A |
|---|
| DIMENSIONS | Closed Height | Stroke | Extended Height |
| Mini King Cobra Roofbolter | 600mm / 24" | 500mm / 20" | 1100mm / 44" |
|---|
| King Cobra Top Mount MAXI 1020 | 1000mm / 40" | 1000mm / 39" | 2000mm / 79" |
|---|
| King Cobra Top Mount MAXI 1124 | 1100mm / 44" | 1300mm / 51" | 2400mm / 95" |
|---|
| King Cobra Top Mount MAXI 1228 | 1200mm / 48" | 1600mm / 63" | 2800mm / 111" |
|---|
| King Cobra Top Mount MAXI 1332 | 1300mm / 52" | 1900mm / 73" | 3200mm / 125" |
|---|
| King Cobra Top Mount MAXI 1436 | 1400mm / 56" | 2200mm / 86" | 3600mm / 142" |
|---|
| King Cobra Top Mount MAXI 1540 | 1500mm / 60" | 2500mm / 95" | 4000mm / 158" |
|---|
| King Cobra Top Mount MAXI 1745 | 1700mm / 67" | 2800mm / 111" | 4500mm / 178" |
|---|
King Cobra Headpiece Comparison
Dust Collection Option
Compatible with MPI's Dust Collection Unit
MPI Dust Collection System sold separately
(vacuum, cans and filters)
Standard Wet Head
Designed to minimize dusty working conditions.
Wet Head units may also be used to drill dry.
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