McLaughlin Hoist & Crane


Bridge Cranes

McLAUGHLIN HOIST & CRANE designs, manufactures, distributes, and installs overhead bridge cranes. We can design custom cranes to fit your particular building and lifting needs.

Our qualified sales engineers welcome the opportunity to discuss your material handling needs and propose an effective solution.

Every bridge crane system is made up of four main components:

  1. Runway – surface which provides the horizontal motion for the bridge to travel on
  2. Bridge – surface which provides the horizontal motion for the trolley to travel on
  3. Trolley – component which the hoist is structurally attached to and travels parallel on bridge
  4. Hoist –Provides the vertical motion of the crane

Bridge cranes can be divided into two distinct groups:

  • Top Running Bridge Cranes
  • Underhung Bridge Cranes

The decision of which style is optimal for your situation is primarily based upon three factors:

  • Desired crane capacity
  • Support structure
  • Headroom and Required Available Lift

Top Running Bridge Crane

  • Capacity – Theoretically infinite capacity, cranes have been built with 500 ton capacities (1 Million Pounds!). Capacities are practically limited by mechanical strength of support posts and the bridge. Common capacities range from 3 tons to 25 tons.
  • Support Structure – Supported from independent columns or runways designed into the building structure, but may be supported from building supports for lighter capacity cranes.
  • Headroom – Provides more available lift than a similar underhung bridge crane. The most space efficient crane setup for maximum available lift is the double girder top running bridge crane.

Underhung Bridge Crane

  • Capacity – Known to have capacities anywhere from 1 to 25 tons, but are more common to have maximum capacities from the 1 to 10 ton range.
  • Support Structure – Is supported directly from the structure of the building it is located in.
  • Headroom – Requires greater headroom, to obtain equal available lift, than a top running crane.