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

Product Search

Request information [-]

Robbins 34RH C QRS: Raiseboring Machine

George Apostolopoulos

+233 21 774512

Send an email

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, nominal1.2 m
Raise diameter, range0.6 - 1.5 m
Raise diameter, nominal (Downreaming/boxhole)0.72 m
Raise lenght, nominal340 m
Raise lenght maximum610 m
Reaming thrust1150 kN
RPM, pilot0 - 49 rpm
RPM, reaming0 - 19 rpm
RPM, reaming (reduced torque)19 - 25 rpm
Bailing air (@ 7bar/100 psi)13 m³/min
Bailing, water450 l/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 diameter203 mm
Drill pipe diameter optional254 mm
Drill pipe length s/s1219 mm
Pilot hole diameter229 mm
Pilot hole optional diameter279 mm
Cooling water (at 25ºC / 77°F inlet temperature)60 l/min
Measurements & weights - Power pack
Length3300 mm
Height1690 mm
Width1600 mm
Weight4700 kg
Performance
Maximum torque, reaming64 kNm
Maximum torque, break out 96 kNm
Stroke1710 mm
Traverse rate, fast traverse rate5.9 m/min
Traverse rate, feed rate3 m/min

Product views


See the product in action

George Apostolopoulos

+233 21 774512

Send an email