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Atlas Copco Construction Technique
Underground Rock Excavation
Boomer L2 D

 

Face drilling rig

Technical Specifications
Metric
Air system
Capacity, max 12.5 l/s at 7 bar
Adjustable speed No
Air pressure gauge Yes
Boom
Number of booms 2
Boom BUT 28
Boom extension, max 1250 mm
Feed extension, max 1250 mm
Feed roll-over 360˚
Lifting angle, max + 65˚/-30˚
Parallel holding Complete
Swinging angle, max +45˚/-25˚
Weight, boom only 1750 kg
Carrier
Cabin, FOPS-approved, noise level <80 dB(A) N/A
Cabin, FOPS-approved, noise level <85 dB(A) Optional
Fixed seat for operating Optional
Fixed seat for tramming Yes
Air conditioning unit, with heating function Optional
Hydraulic cabin lift system N/A
Engine Deutz 4-cylinder, D914 L04 (Tier 3/Stage IIIA)
Power rating 58 kW at 2300 rpm
Torque 270 Nm at 1500 rpm
Articulated steering ±41˚ steering angle
All-wheel drive Yes
Hydrostatic power steering system Yes
Transmission Hydrostatic, Clark 12000
Axle, front Dana 176
Axle, rear Dana 176, ± 8˚ oscillation
Differential lock on front axle Automatic
Tires 12.00xR20
Clearance outside axles 15˚
Hydraulic jacks, front 2 extendable
Hydraulic jacks, rear 2
Service brakes 2 separate circuits
Emergency and parking brakes SAHR
Fuel tank, volume 60 l
Exhaust catalyser Yes
Silencer Yes
Electrical system 24 Volt
Batteries 2×70 Ah
Tramming lights 8×70 W
Working lights 3×500 W
Brake lights Yes
Illuminated stairs for platform No
Fire extinguisher Yes
Central lubrication system Yes
Spirit level Yes
Horn Yes
Beacon Yes
Reverse alarm Yes
Shelf for drill bits and tools No
Control system
Control system Direct Control System, DCS
Electronic control panel N/A
Transfer of data and back-up settings N/A
Integrated diagnostic system N/A
Battery for electronic system N/A
Dimensions and weight
Height with cabin 3126 mm
Height roof up 3091 mm
Height roof down 2375 mm
Length 14169 mm with BMH 6814 feeds
Ground clearance 290 mm
Turning radius, outer 8200 mm
Turning radius, inner 4800 mm
Electrical system
Total installed power 125 kW
Main motors 2×75 kW
Voltage 380-1000 V
Frequency 50-60 Hz
Starting method Star/delta (1000 V – direct start only)
Overload protection for electric motors Thermal
Percussion hour meter Yes
Percussion hour meter on operator display Yes
Digital volt/amperage meter in electrical cabinet Yes
Phase sequence indicator Yes
Earth fault indicator Yes
Battery charger Yes
Transformer 4 kVA
Cable reel, diameter 1600 mm
Dual controls for cable reel No
Hydraulic system
Hydraulic pumps 2 units, one for each boom
Pumps unloaded at start Yes
Hydraulic oil tank volume 194 – 195 l
Low oil level indicator No
Oil temperature gauge on oil tank Yes
Electrical oil filling pump Yes
Oil filter indicator Yes
Water cooled oil Yes
Filtration 16 µm
Hydraulic oil Mineral
Oil/water cooler in stainless steel No
Big hole drilling system No
Water system
Water booster pump Electric, Flygt
Capacity, max 100 l/min at 13.5 bar
Water inlet pressure, min 2 bar
Water pressure gauge No
Water flow guard Yes
Rock drill
Rock drill COP 1638, COP 1838ME
Coverage – height 8650 mm
Coverage – width 12400 mm
Width 2550 m

 

Imperial
Air system
Capacity, max 12.5 l/s at 7 bar
Adjustable speed No
Air pressure gauge Yes
Boom
Number of booms 2
Boom BUT 28
Boom extension, max 1250 mm
Feed extension, max 49.21245 inch
Feed roll-over 360˚
Lifting angle, max + 65˚/-30˚
Parallel holding Complete
Swinging angle, max +45˚/-25˚
Weight, boom only 3858.085 lbs
Carrier
Cabin, FOPS-approved, noise level <80 dB(A) N/A
Cabin, FOPS-approved, noise level <85 dB(A) Optional
Fixed seat for operating Optional
Fixed seat for tramming Yes
Air conditioning unit, with heating function Optional
Hydraulic cabin lift system N/A
Engine Deutz 4-cylinder, D914 L04 (Tier 3/Stage IIIA)
Power rating 58 kW at 2300 rpm
Torque 270 Nm at 1500 rpm
Articulated steering ±41˚ steering angle
All-wheel drive Yes
Hydrostatic power steering system Yes
Transmission Hydrostatic, Clark 12000
Axle, front Dana 176
Axle, rear Dana 176, ± 8˚ oscillation
Differential lock on front axle Automatic
Tires 12.00xR20
Clearance outside axles 15˚
Hydraulic jacks, front 2 extendable
Hydraulic jacks, rear 2
Service brakes 2 separate circuits
Emergency and parking brakes SAHR
Fuel tank, volume 227.12472 gal
Exhaust catalyser Yes
Silencer Yes
Electrical system 24 Volt
Batteries 2×70 Ah
Tramming lights 8×70 W
Working lights 3×500 W
Brake lights Yes
Illuminated stairs for platform No
Fire extinguisher Yes
Central lubrication system Yes
Spirit level Yes
Horn Yes
Beacon Yes
Reverse alarm Yes
Shelf for drill bits and tools No
Control system
Control system Direct Control System, DCS
Electronic control panel N/A
Transfer of data and back-up settings N/A
Integrated diagnostic system N/A
Battery for electronic system N/A
Dimensions and weight
Height with cabin 123.070494 inch
Height roof up 121.692546 inch
Height roof down 93.503655 inch
Length 14169 mm with BMH 6814 feeds
Ground clearance 11.417288 inch
Turning radius, outer 322.833672 inch
Turning radius, inner 188.975808 inch
Electrical system
Total installed power 125 kW
Main motors 2×75 kW
Voltage 380-1000 V
Frequency 50-60 Hz
Starting method Star/delta (1000 V – direct start only)
Overload protection for electric motors Thermal
Percussion hour meter Yes
Percussion hour meter on operator display Yes
Digital volt/amperage meter in electrical cabinet Yes
Phase sequence indicator Yes
Earth fault indicator Yes
Battery charger Yes
Transformer 4 kVA
Cable reel, diameter 1600 mm
Dual controls for cable reel No
Hydraulic system
Hydraulic pumps 2 units, one for each boom
Pumps unloaded at start Yes
Hydraulic oil tank volume 734.369928 – 738.15534 gal
Low oil level indicator No
Oil temperature gauge on oil tank Yes
Electrical oil filling pump Yes
Oil filter indicator Yes
Water cooled oil Yes
Filtration 16 µm
Hydraulic oil Mineral
Oil/water cooler in stainless steel No
Big hole drilling system No
Water system
Water booster pump Electric, Flygt
Capacity, max 100 l/min at 13.5 bar
Water inlet pressure, min 2 bar
Water pressure gauge No
Water flow guard Yes
Rock drill
Rock drill COP 1638, COP 1838ME
Coverage – height 340.550154 inch
Coverage – width 12400 mm
Width 100393.398 inch
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Underground Rock Excavation

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