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Double-Girder Bridge Cranes

Just as single-girder bridge cranes, the double-girder cranes´ span is limited by transporting capabilities of driveways to the place of installation. The load bearing capacity of double-girder cranes with standard hoists is up to 80000 kg. Cranes with hoists with open winch can be supplied without any load bearing capacity and height lift limitations. Double-girder cranes are suitable solution for heavy operations.

Double-girder design is variable and optional in various versions such as: with service platforms or bridges, with auxiliary lifts, with range of user´s speeds and control systems etc.

Technical Information

  • Maximum load bearing capacity up to: 80000kg (with standard hoists), unlimited capacity for hoists with an open winch
  • Colour: of a steel construction is RAL 1007, components in the original colour
  • Span: limited by transporting capabilities
  • Hight of lift: up to 40 m
  • Speed of crane trolley drive: normally up to 40 m/min, smooth moving
  • Speed of hoist trolley drive: normally up to 20 m/min, smooth moving
  • Speed of lift: up to 20 [m/min]
  • Girders are made of box constructions or tube-shaped profiles with “I” cross section
  • We supply rope hoists STREET of high quality, or our hoists made to measure
  • Controlling via hanging button-controllers or via radio remote controllers
  • Crane is equipped with one or two hoists working either independently or in tandem (at the same time) using just one controller
  • Power supply of crane: via cable trolleys, via closed trolleys covered by plastic or via energy chains
  • Lift of hooks: two-speed (the main lift and micro lift)
  • The possibility to place the crane both inside and outside


  • Each crane is projected to measure according to customer´s requirements to be adapted to a place and shed´s conditions (or to open space) and still work effectively
  • Lay out of crane weight into two end carriages guarantees safe handling with very heavy load
  • Long-term operation without any incidents and with minimal costs for maintenance
  • Remote control
  • The possibility to place the crane both inside and outside
  • Safety hooks prevent the load from sliding
  • They make the work with very heavy burden easy and effective
  • Safety and reliability during working

Accessories and options

  • In case of remote control, the crane could be equipped with emergency control via the hanging button-controller which could move along the whole crane independently of crab trolley drive or it could be connected to the main switchboard of the crane via connector
  • Crane is equipped with two hoists working either independently or in tandem (at the same time) using just one controller
  • Weighing of transported load with an output to a crane display, to a controller display or to PC
  • Anti-collisional systems in case of several cranes being on one railway
  • Automatic control system
  • Version with a slewing beam, with a grab or with a magnet
  • Colour of cranes according to customer´s requirements
  • Special grabbing equipment
  • Crane controlling from a cab
  • Service platforms along the bridge
  • Modification for use in potentially explosive atmospheres

Why Cralif?