What is a light crane system?
A light crane system is a modular overhead lifting solution built around enclosed steel or aluminium rail rather than the welded I-beam used by a traditional electric overhead travelling (EOT) crane. The key engineering difference: the runway and bridge are extruded or cold-rolled profile sections, joined with bolted couplings, riding on internal trolleys with low-friction polymer rollers. That construction approach has three downstream effects that matter on the production floor — push-pull forces are low enough that an operator can position a 500 kg load with one hand, the system is fully bolted so it can be extended or relocated, and the headroom required is minimal because the trolleys live inside the rail rather than below it.
The trade-off against a welded-girder EOT is capacity. Light crane systems are generally rated up to 2 t and span up to about 14 m between supports. Above those thresholds you're looking at a single- or double-girder bridge crane (see our overhead bridge crane page). Below them, the light crane is almost always the better tool for the job — lower cost, faster install, ergonomically superior, and able to be reconfigured as the work changes.
Configurations we supply
The standard light crane families cover three layouts, each suited to a different facility constraint:
Freestanding (column-supported)
Runway supported on its own steel columns and base plates rather than the building structure. Used when the existing roof structure can't accept the load (common in tilt-panel sheds), when the bay layout doesn't suit building-supported runways, or when the customer wants the option to relocate the crane in the future. Footprint is the column base plates only — no welding to the building.
Ceiling-mounted (building-supported)
Runway hangs from the roof structure via brackets fixed to the portal frames or roof beams. The most space-efficient option — no floor-mounted columns to navigate around. Requires a structural review of the existing building because the runway loads now feed into the roof. We do this review as part of the engineering process and provide the structural calculations to the building owner if needed.
Monorail (single-rail)
A single rail running the length of the production area without a bridge — the hoist trolley travels along the rail directly. Ideal for linear processes (paint lines, weld stations, assembly conveyors) where the load follows a fixed path. Can be branched and switched for multi-station layouts.
Capacity and span
Capacities scale from 80 kg up to 2 t. Most production assembly applications sit in the 250 kg to 1 t range. Span between supports is typically 4 m to 9 m for cold-rolled steel and 4 m to 8 m for aluminium, though larger multi-bay systems can cover hundreds of square metres of production floor by using multiple parallel runways with cross-bridges.
Capacity limits on light crane systems aren't arbitrary — they come from AS 1418.18's structural calculations for cold-rolled and extruded profile members. We size the rail section based on actual span, capacity, and duty cycle, not by picking from a catalogue.
Aluminium rail vs steel rail — which to choose
The choice between aluminium and cold-rolled enclosed steel rail comes down to four factors: capacity per unsupported span, environment, ergonomics, and budget.
| Factor | Aluminium rail | Cold-rolled steel rail |
|---|---|---|
| Typical capacity | up to 1 t (some profiles to 2 t) | up to 2 t |
| Push-pull force | Lowest — best for high-cycle ergonomics | Low — adequate for most production work |
| Corrosion resistance | Excellent — naturally protected | Painted/galvanised — needs maintenance in coastal environments |
| Installed cost | Higher per metre | Lower per metre — more cost-effective for larger systems |
| Best application | Food, pharma, coastal, light assembly | General manufacturing, fabrication, heavier duty |
For a 250 kg ergonomic lifting cell on a 6 m bay, aluminium is usually the right call. For a 1.5 t weld-positioner on a 9 m bay running two shifts, cold-rolled steel makes more sense.
Standards and compliance
Every light crane system we supply is designed and built to AS 1418.1 (general structural and mechanical requirements for cranes, hoists and winches) with the specific provisions of AS 1418.18 applying to crane runways. Hoists meet AS 1418.2 where electric chain or wire rope hoists are integrated. In-service inspection requirements come from AS 2550.1.
WHS plant design registration is required in some Australian jurisdictions for cranes above prescribed thresholds. The triggers vary by state — Victoria, NSW, Queensland, SA and Tasmania apply the model WHS Regulations; WA has its own equivalent. Where registration is required, Sorian prepares the design documentation and lodges the application with the relevant state regulator on your behalf, and includes the registration number on the handover certificate.
Comparison vs jib and workstation crane categories
| Jib crane | Workstation crane | Light crane system | |
|---|---|---|---|
| Coverage area | Arc (single column) | Single bay rectangle | Multi-bay or whole facility |
| Capacity | up to 5 t | up to 2 t | up to 2 t |
| Headroom needed | Medium | Low | Low |
| Push-pull effort | Medium | Low | Lowest |
| Reconfigurable | No | Limited | Yes — fully bolted |
If the job sits in a fixed work cell with a defined arc of motion, a jib crane is usually the simplest answer. If the work covers a single bay, a workstation crane is the natural fit. If the work needs to cross multiple bays, follow a process line, or be reconfigured as the layout evolves, the light crane system is the right choice.
Typical applications
- Assembly lines — engine, pump, gearbox and motor assembly cells
- Weld positioning — fixturing fabrications for welder access
- Press tending — loading and unloading dies and finished parts
- Maintenance bays — workshop crane for component change-outs
- Food and beverage processing — sanitary stainless or aluminium configurations
- Pharmaceutical and clean-room manufacturing — corrosion-resistant aluminium
- Defence subcontractor workshops — precision component handling
- Battery and EV cell assembly — controlled-force ergonomic placement
The Sorian process — site visit to handover
- Free site visit — we measure span, lifting heights, headroom, structural support options, power supply and access
- Engineering review — capacity, duty class per AS 1418, runway loads, support method (freestanding columns or building-mounted), foundation sizing if applicable
- Fixed-price quote — typically within one business day, with the engineering summary attached so you understand what you're paying for
- Manufacturing and supply — typically 4-6 weeks lead time
- Installation — usually 1 day on site for a single-bay system, longer for multi-bay or monorail
- Handover documentation — engineering calculations, certificates, O&M manuals, WorkSafe registration where required
Frequently asked questions
What is a light crane system?
A modular, track-mounted overhead lifting solution typically rated up to 2 t. Used for repetitive ergonomic lifting in assembly, fabrication and production lines. Cold-rolled steel or aluminium rails replace the welded I-beam of a traditional EOT crane.
Light crane system vs workstation crane?
Largely interchangeable in the Australian market. "Workstation crane" implies a fixed-bay system; "light crane system" implies larger multi-bay or monorail layouts. Same component families and same capacity range.
Aluminium rail or steel rail?
Aluminium for high-cycle ergonomics, food/pharma/coastal environments, and lighter loads. Cold-rolled steel for higher capacity, longer spans, heavier duty cycling and more cost-effective larger systems.
What standards apply?
AS 1418.1 (general), AS 1418.18 (runways), AS 1418.2 (hoists), AS 2550.1 (in-service). WHS plant design registration may apply depending on state and crane size.
How long does install take?
Single-bay systems typically install in one day. Multi-bay and monorail systems take 2-4 days. Lead time from order is usually 4-6 weeks.
Can it be moved or expanded later?
Yes — fully bolted construction means the runway can be extended, bays added, or the entire system relocated. We supply as-built drawings to support future changes.
Talk to an engineer
Get a free site visit anywhere in Australia. Every enquiry is reviewed by a qualified mechanical engineer before we respond — usually within one business day.
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