raisebore

SCHEDULE B - Technical Data of Robbins 97RL Raiseborer

  1. Connected power
    • Mains supply 415 Volts, 50 Hertz, 650 KVA
    • Diesel Genset supply 750 KVA unit with appropriate Load Bank if necessary
  2. D.C. Drive 300 KW (400 HP)
  3. Compact design - 4.4m extended height (plus 400mm if beams required)
  4. Pilot thrust - 500 KN (115,000 lbs)
  5. Reaming thrust - 6,705 KN (1,500,000 lbs)
  6. Reaming torque - 408 KNm (300,620 ft lbs) operating
  7. Pilot Drilling speed 0 - 68 rpm variable
  8. Reaming speed 0 - 16 rpm variable
  9. Transporter - sled with inbuilt erection device
  10. Spreader beams to allow hole break through (if required)
  11. Air consumption 23m3/min @ 7 bar (800 cfm @ 100 psi)
  12. Water consumption for pilot drilling - approximately 1,000 litres/min (220gpm @ 100 psi) which is recirculated via sumps
  13. Cooling system - is recirculated closed circuit glycol
  14. Raiseborer weight - 32 tonnes
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