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Gantry cranes — single, double & semi-gantry

When there is no building to hang a bridge from, the bridge grows legs. Gantry cranes run on ground rails — stockyards, precast yards, machine-loading bays and open-air maintenance lines.

SYS 01 / TYPES

Three layouts, one sizing logic

Heavy shipyard cranes working a vessel at a berth

Double girder gantry

Highest capacities and duty classes; trolley rides between two box girders on A-legs.

Reference ranges →
Blue steel crane structure in daylight

Single girder gantry

Lighter structure with an under-running hoist; economical general-duty yards and bays.

Reference ranges →
Shipyard cranes lining a harbour yard

Semi-gantry

One leg on the ground, one side running on a wall-mounted rail — saves yard width.

Reference ranges →
DATA / REFERENCE RANGES

Reference ranges

* Industry reference range — to be confirmed with the factory data sheet for your configuration
ParameterReference range *
Rated capacity3–50 t
Span12–35 m
Lift height6–12 m
Duty classA5 typical for outdoor service (ISO 4301 reference)
OperationGround remote / cabin — per order
Power supplyCable drum / festoon — per site

Semi-gantry and special spans are engineered per order — that is our primary lane. Send your layout →

SYS 02 / OUTDOOR

What outdoor duty changes

A gantry lives outside, so the specification is about weather as much as tonnage. These are the inputs we check with you before quoting — they decide structure, electrics and foundation interface.

  • Wind conditions at the site — parked stability and operational limits
  • Ground rail foundation, end stops and buffers — interface drawing provided
  • Outdoor-rated electrical protection for motors, panels and limit switches
  • Power delivery: cable drum or festoon, routed clear of traffic
  • Corrosion protection class for coastal or humid environments
  • Drainage and housekeeping of the rail line
  • Maintenance access on legs and girder platforms
  • Anti-sway and slow-speed positioning for long loads (precast, steel)
RELATED

Related products & reading

Overhead cranes

When you do have a building — bridge cranes on runway rails.

Overhead crane details →

Outdoor applications

Yards, precast and building-material handling use cases.

Applications →

Shipping & delivery FAQ

How a gantry is packed, shipped and commissioned.

Read the FAQ →

Send the yard layout, get a gantry proposal.

Span, capacity, lift height and ground conditions — quotation target within 24 h on working days.

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