Robbins 34RH C QRS: Raiseboring Machine - Atlas Copco Iraq

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Robbins 34RH C QRS: Raiseboring Machine

Mahmoud Ismail

+971 (04) 704 0111

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The Robbins 34RH C QRS is specially designed to rapidly drill short and small diameter raises. Its unique design eliminates many of the time consuming preparations needed when using traditional raiseboring machines. The 34RH C QRS can drill a raise of 720 mm in diameter in down reaming or 1.2 m diameter in conventional back reaming in most rock types.


Features & benefits

  • A base frame is designed to level the machine with the use of four hydraulic jacks. The base frame works together with two stingers extending from the top of the machine, to brace the machine in place.
  • The drive system consists of a tandem hydraulic motor coupled in-line to a gearbox. It features the lowest inertia of all our drives and does not subject the drill string to high stall torques
  • The single hydraulic drive power pack features variable speed and excellent torque limiting control

Technical description



Technical data

Operational data - Derrick
Raise diameter, nominal4 ft
Raise diameter, range2 - 5 ft
Raise diameter, nominal (Downreaming/boxhole)2.4 ft
Raise lenght, nominal1115 ft
Raise lenght maximum2000 ft
Reaming thrust258500 lbs
RPM, pilot0 - 49 rpm
RPM, reaming0 - 19 rpm
RPM, reaming (reduced torque)19 - 25 rpm
Bailing air (@ 7bar/100 psi)459 ft³/min
Bailing, water119 gal/min
Electrical power supply (50/60 Hz)165/190 kW / 221/255 HP
Electrical voltage (50/60 Hz)400-1 000 V
Electrical frequency50 - 60 Hz
Electrical power requirement (50/60 Hz)198/227 kVA
Drill pipe diameter8 inch
Drill pipe diameter optional10 inch
Drill pipe length s/s48 inch
Pilot hole diameter9 inch
Pilot hole optional diameter11 inch
Cooling water (at 25ºC / 77°F inlet temperature)15.8 gal/min
Measurements & weights - Power pack
Length130 inch
Height67 inch
Width63 inch
Weight10362 lb
Performance
Maximum torque, reaming47200 ft-lbs
Maximum torque, break out 70805 ft-lbs
Stroke67 inch
Traverse rate, fast traverse rate19.4 ft/min
Traverse rate, feed rate9.8 ft/min

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Mahmoud Ismail

+971 (04) 704 0111

Send an email