Crane Kits

A crane kit includes all the mechanical and electrical components needed to build an overhead or gantry crane, except the bridge girder itself. The girder is fabricated locally, by a steel fabricator or the plant's own structural department, to the drawings supplied with the kit. This avoids shipping long, heavy steel girders from abroad, and the components arrive on pallets in a standard container. A typical kit includes: Hoist unit: a wire rope or chain hoist, single or double girder, with travel trolley. End carriages: a pair of end carriages with travel wheels, bearings and travel motors. Control panel: a panel mounted on the bridge, with inverter speed controllers, contactors and protection. Power supply: C-track, cable trolleys and flat cables to carry power to the travelling hoist. Controls: a pendant control, a wireless radio remote, or both. Drawings: fabrication and welding drawings for the bridge girder. The components in the kit are matched in advance, so the mechanical and electrical connections between the hoist, end carriages and control panel are ready for assembly. Fabricating the girder locally also allows direct control over steel quality, welding and paint. Kits are available for top running and underslung overhead cranes, in single and double girder configurations.

When to choose this

For a fabricator supplying the girder — the girder is not one of the 18 components
A defined set of 18 components: hoist, end carriages, gear motors, control and electrical cabinets
Three separate frequency inverters, for hoisting, bridge travel and trolley travel
Radio control with a display, and a black box that records operating data

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EOT Cranes (Electric Overhead Travelling Cranes)

An overhead travelling crane is installed at the top of the building and travels along a fixed runway, covering the whole hall while leaving the floor clear. The bridge travels the length of the hall, the hoist travels across the bridge and the hook raises and lowers, so the load can reach any point under the crane. Overhead cranes are used in manufacturing plants, warehouses, workshops and maintenance halls. Overhead cranes differ in two main ways: Runway mounting Top running crane: the bridge travels on rails mounted on top of the runway beams, which are supported on the building columns or on concrete corbels. This configuration suits heavy loads and wide spans. Underslung crane: the bridge hangs from the roof structure and runs on the lower flange of the runway beams. This configuration suits buildings with no room for columns, and lets the hook get closer to the side walls. Number of girders Single girder: one girder with the hoist running on its lower flange. Lighter construction and quicker to install, suited to light and medium loads. Double girder: two parallel girders with a hoist trolley running on top of them. The hook rises up between the girders, giving more lifting height, and the structure suits heavy loads and intensive duty. The right crane depends on lifting capacity, hall width, available headroom and the existing structure. The model pages list the technical data for each type. The crane moves along three axes, down the length of the building, across the bridge and vertically, and covers the entire floor area without forklifts and without temporary rigging. The first decision is the mounting method. A top running crane travels on rails carried by columns and uses almost the full height of the building, which suits heavy loads and wide spans. An underslung crane hangs from the roof structure, and suits cases where columns cannot be added or where the production floor has to stay clear, at the cost of a shorter span. The second decision is the number of girders. A single girder is lighter, less expensive and puts less load into the structure. A double girder carries far heavier loads and also gives more hook height in the same building, because the hook rises between the girders rather than below them. The third decision is the operating environment. A bridge crane is built around its hoist unit and electrical system, so it can be specified for the environment it will work in. Alongside the standard industrial build we supply versions for ATEX classified areas, for marine and coastal installations, for dusty and high humidity conditions and for aggressive chemical environments. The specification is fixed at the design stage rather than retrofitted, so the environment should be defined in your first enquiry. We supply 129 configurations across three series: single girder from 2 to 12.5 tonnes over spans of 10.5 to 31.5 metres, double girder from 5 to 50 tonnes over spans of 13.5 to 31.5 metres, and underslung from 2 to 10 tonnes over spans of 6 to 20 metres. Standard lifting height is 9 metres and the duty rating is A5 to FEM 2M. Every crane is engineered to your building dimensions, your loads and your operating environment rather than selected from a catalogue. We carry out the site survey, the design, the installation and the commissioning, and stay with the crane through routine maintenance for its working life.

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Jib Cranes

Jib cranes for workstations and machine tending, from the BRIMA catalogue. Six series: four with manual slew from 80 to 1,000 kg on arms of 3 to 7 m, and two with powered slew from 1,000 to 6,300 kg on arms of 5 to 10 m. Each mounts on its own column or on a wall, and slew runs from 180 to 360 degrees depending on the model. The 95 configurations the catalogue offers are set out in each series table, which gives, for every rating, the arm lengths it is sold in.

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Wire Rope Hoists

A wire rope hoist is an electric hoist in which a steel wire rope winds onto a drum, driven by an electric motor to raise and lower the load. Wire rope hoists suit heavier loads, greater lifting heights and more intensive duty than chain hoists, which makes them the usual choice for overhead cranes, gantry cranes and lifting systems that work full shifts. The hoist is mounted to suit the crane: on a trolley running on the lower flange of the beam in a single girder crane, on a crab running on rails above the two girders in a double girder crane, or fixed on a base. For buildings with limited headroom there are low headroom versions, where the hoist sits tight against the beam and leaves more height under the hook. Most hoists have two lifting speeds or inverter speed control, for fast travel between points and gentle placing of the load. Upper and lower limit switches restrict hook travel, and overload protection stops the lift when the load exceeds the rated capacity. Each hoist's duty classification sets the operating hours and starts it is designed for, and should be chosen to match the work in the plant. The model pages list the lifting capacity, lifting height, working speeds and duty classification of each hoist.

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