Crane Grab

Tender rates are often quoted as between 20 and 25 m3/hr. With adequate supervision and sufficient loose spoil material supplied to the crane drop area, these rates can easily be increased. Grabs mounted on crawler cranes, rates depend on...

  • Depth of the spoil to be removed
  • Operative supervision - breaks etc
  • Management and availibility of lorries
  • Efficiency and utlisation of banksmen
  • Transport of spoil to crane drop area
  • Down time of machinery and staff

Clamshell Grab Mounted on a crawler crane... 2.0 m3 bucket (HK Cut & Cover Tunnels)

  • 33 m3/hr
  • 1.5 m3 per lift
  • 2.9 mins per lift

2.5 m3 bucket (HK Station Box)

  • 41 m3/hr
  • 2.0 m3 per lift
  • 3.1 mins per lift

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