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Blast HOLE drilling rig

Rockmaster B12-A blast hole drilling rig

New heavy duty Down-the-Hole drill rig, the Rockmaster "B12-A".

Rockmaster B12-A Blast Hole Rig

The B12 has been specifically conceived to be solid, energy efficient and reliable to enhance field productivity and to ensure easy maintenance. The rig is equipped with a heavy duty Cummins engine coupled with a high efficient compressor system that allows very low fuel consumption compared to the competition.

Some of the many notable features of the B12-A include an ergonomic, spacious cab to provide the operator with maximum comfort and security. Furthermore, our High-Track undercarriage track frame provides up to 60 000 lbs of tractive force to allow greater gradeability in rough inclined terrains.

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Please contact us If you have any questions and we will be happy to provide you additional information on our blasting drilling rigs.
Ask for a quotation today and see why drillers around the world trust us.

Specifications and features of the Rockmaster B12-A

[-] Collapse all. [+] Expand all.

[-] Weight and Dimension

Weight 33792kg <> 74500lbs
Length 13.05 m <> 42’-10”
Width 2.89 m <> 9’- 6”
Height 3.55 m <> 11’- 6”

[-] Mobile-Undercarriage

Track length 4.26m <> 14.0’
Triple grouser shoes width 457mm <> 18”
Independent tracks oscillation ±8°
Ground clearance  381mm <> 15”
Travel speed 4.82 km/h <> 3 mph
Gradability  27° <> 52% (Engine max. 20°<> 36%)
Max. theoretical traction effort  24947 kg <> 55,000lbs  

[-] Diesel power unit

Model QSK-19 ECM
Power  700 hp @ 1800 rpm
Operational fuel consumption 74.87L/hr <> 19.78gall/hr
Fuel tank  1136 L <> 300 galls
Filtering system  Two stage (Primary @ security)

[-] Compressor unit (Dual performance)

  • Sullair
  • Heavy Duty, Energy efficient 1050cfm x 500psi x 1800rpm
  • Heavy Duty, Energy efficient 1165cfm x 350psi x 2100rpm
Rating condition  Sea level & 20° C
Cooling  Air cooled radiator, charge-air, oil cooler
Intake modulation  Full range control for partial load
Intake filters  Two stage dry type
Controls  Pressure gauge, temperature gauge, air filter maintenance indicator
Safety device
  • High discharge temperature
  • High receiver pressure
  • High Inter stage temperature
  • High Inter stage pressure
  • Low oil pressures
  • Minimum pressure valve
  • Pressure relieve valve

[-] Hydraulic power unit & components: (Rexroth/Sauer/Danfoss)

Pump drive  Two (2) variable displacement piston pumps, load sensing, pressure compensated,and one (1) piston pump dedicated for dust collector
Hydraulic tank capacity  432 L <> 114 gal
Filtration system  5 micron 
Fittings and connectors  type "ORFS-ORBS"
Hydraulic hoses  Standard heavy duty
Camera infra-red vision 1 front / 2 rear
Air system supply  Dual mode 500psi & 350psi
Integrated safety system  Over heat, low level, etc.

[-] Automatic lubricator (oiler) for the down the hole hammer

Type  Hydraulic piston pump system, Metering adjustment,Fully automatic  

[-] Water injection system

Pump model Model FMC L04
Type  Double piston pump
Volume 34 L/min <> 9 gal/min  
Pressure  38 bar <> 550 psig
Revolution  speed  500 rpm
Water tank "Stainless steel"  1136 L <> 300 gall

[-] Boom positioning

Boom single section single section 
Boom swing  30°/10°
Tilt inclination:   ±15° below, ±45° above the horizontal
Dump ±45° under, ±75° above from the vertical
Oscillation  -20° to +50° from vertical pin #1
+50° to -6° from horizontal pin #2
Hydraulic cylinders  Equipped with integrated safety locks

[-] Drilling Mast & Feed assembly

Mast structure  HD designed
Feed system hoisting and pull down power Provided by link-chain that use a hydraulic powered gear box controlled hydraulically for accurate trust
Pull down force  17500 lbs <> 77.8  KN
Pull back capacity  17500 lbs <> 77.8  KN
Jib winch capacity  1200 lbs <> 544 kg

[-] Carrousel

Carousel   (6) rods 20' long <> 6.00m
Stars "set"  from 3¼" to 5" dia. rods
Operation  All function are hydraulically operated
Pipe loading  Gate for loading pipe in horizontal position

[-] Drill Head

Model Euro-drill RH900
Rotation infinity variable speed  0 - 100 rpm
Working pressure  3600 psi
Swivel passage  50.8 mm <> 2”

[-] Drilling table

Swivel break-out retractable jaws Swing torque  22436 lb
Clamps retractable jaws Clamps hold force 58560 lb
Max. opening   222 mm <> 8¾''

[-] Noise less cab "ROPS"

Fully thermal  Summer-Winter
Vibration  Isolated seat and seat belt
Sound insulation environment Less than 85 dBa
Functions  All function are controlled from cab

[-] Panel view

  Display all pressure/ shutdown alarm/ active controls/ meters

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