Tadano GR vs AC cranes: rough-terrain or all-terrain?
Choosing between a Tadano GR rough-terrain crane and a Tadano AC all-terrain crane is not a simple capacity comparison. The correct family depends on how the crane reaches the project, how it moves inside the site, the required load and radius, available setup space, ground conditions and the logistics needed for counterweights and attachments.
Tadano describes its GR rough-terrain cranes as compact, single-cab machines with all-wheel steering and all-wheel drive for confined or uneven jobsites. Tadano’s AC all-terrain cranes use multi-axle road-capable carriers and are designed to combine road mobility with a much wider range of boom, axle and lifting configurations.
The practical difference
| Selection factor | Tadano GR rough-terrain | Tadano AC all-terrain |
|---|---|---|
| Main operating environment | Confined, uneven or unfinished jobsites | Projects combining road mobilisation with broader reach or capacity needs |
| Carrier concept | Compact carrier; one cab for driving and crane operation | Multi-axle road carrier with separate crane superstructure |
| Jobsite movement | Strong manoeuvrability, all-wheel steering and all-wheel drive | Good manoeuvrability for its size; access and setup needs increase with class |
| Mobilisation | Often concentrated on one site; external transport may still be required | Designed for road travel, but route, axle load, permits and support transport must be planned |
| Typical decision drivers | Tight access, rough ground, frequent repositioning, compact setup | Load chart, boom system, road movement, counterweight logistics, hook height and radius |
| Typical applications | Plants, yards, utilities, industrial maintenance, compact construction sites | Infrastructure, major construction, energy, industrial erection and multi-site work |
When a GR crane is usually the better starting point
A GR crane is normally the first family to examine when most work takes place within one constrained project area. Its compact carrier and single-cab arrangement can simplify movement around industrial plants, yards and unfinished sites. Tadano’s current regional ranges emphasise all-wheel steering, all-wheel drive and manoeuvrability in narrow or uneven areas.
GR cranes are also useful when the crane must change lifting position repeatedly over short distances. This can reduce the operational burden of moving a larger road crane around a compact site.
However, “rough-terrain” does not mean the machine can be set up anywhere. The lift still requires suitable ground bearing capacity, level setup, correctly supported outriggers and compliance with the applicable load chart. Soft ground, slopes and underground services may require engineered preparation.
When an AC crane is usually the better starting point
An AC crane is normally the stronger starting point when a project combines significant reach or lifting demand with regular road mobilisation. Tadano’s current AC range spans multiple axle classes and boom lengths, allowing the project team to match the carrier and superstructure to different lifting requirements.
The commercial advantage is not simply that the crane can drive on public roads. The real benefit may be reduced dependence on crawler-crane assembly and transport. Even so, counterweights, jibs and other equipment may require support vehicles. The mobilisation plan must account for route restrictions, axle loads, bridge limits, turning space, permits where required and assembly space at the destination.
Current range examples
The models below illustrate family differences; they are not direct one-to-one substitutes.
| Example | Family | Published maximum capacity | Published main boom |
|---|---|---|---|
| GR-700EX-4 | GR | 70 t | 47 m |
| GR-900EX-4 | GR | 90 t | 47 m |
| GR-1000EX-4 | GR | 100 t | 51 m |
| AC 4.070L-1 | AC | 70 t | 52.1 m |
| AC 4.080-1 | AC | 80 t | 60 m |
| AC 4.100L-1 | AC | 100 t | 59.4 m |
| AC 5.250L-2 | AC | 250 t | 79 m class |
The table shows why headline capacity alone is insufficient. A 100 t GR and a 100 t AC can have different boom systems, carrier dimensions, road characteristics, counterweight arrangements and load-chart performance at the required radius.
Decision matrix
| Project condition | Better family to examine first | Why |
|---|---|---|
| Repeated lifts inside a congested plant | GR | Compact movement and frequent repositioning |
| Unfinished access road and uneven yard | GR | Rough-ground carrier concept |
| Multiple projects connected by public roads | AC | Road mobilisation is a central design objective |
| High hook height or long working radius | AC | Broader boom and configuration range |
| Limited assembly area but moderate lift requirements | GR, subject to load chart | Simpler compact operating concept |
| Large infrastructure or energy erection | AC | Wider capacity, axle and boom classes |
| Very soft or poorly prepared ground | Neither by default | Ground engineering may control the decision |
| One heavy lift at long radius | Select from load chart, not family name | Configuration may outweigh carrier category |
Five questions that should decide the family
- What is the verified load weight, centre of gravity and lifting-point arrangement?
- At what working radius must the load be handled?
- What hook height and boom configuration are required?
- Will the crane remain on one site or travel repeatedly between projects?
- What setup area, access width, turning space and ground-bearing capacity are available?
Do not select from nominal capacity alone
A crane’s nominal class is normally based on a specific short-radius condition. It does not mean the crane can lift that load at every radius or boom length. Final selection must consider:
- the exact Tadano load chart;
- boom and extension configuration;
- counterweight;
- outrigger position;
- reeving and hook block;
- wind and environmental limits;
- ground preparation;
- pick-and-set geometry;
- regulatory and route requirements.
A smaller crane close to the load may outperform a larger crane forced to work at a long radius. Conversely, a compact rough-terrain crane may not provide the hook height or chart capacity required by the project.
Uzbekistan project considerations
For Uzbekistan, project planning should account for long-distance travel between Tashkent and regional sites, summer heat, dust, access through industrial or urban areas, support-vehicle logistics and the movement of counterweights and attachments.
The correct family may differ between projects even where the load is similar. A remote industrial site may favour a GR crane that remains within the project area. A multi-site contractor may benefit from an AC crane’s road-mobilisation concept. An urban project may be controlled by turning radius, lane occupation and outrigger footprint rather than maximum capacity.
Road permits, axle restrictions and escort requirements must be checked for the exact route and crane configuration. This guide does not make a legal determination about transport in Uzbekistan.
Procurement and cost logic
The lower-priced or smaller crane is not automatically the lower-cost project solution. Total mobilisation and operating cost may include:
- transport or road movement;
- counterweight trucks;
- assembly and disassembly;
- ground preparation;
- crane time spent repositioning;
- road permits and escorts;
- standby time;
- support equipment;
- site access modifications.
A GR crane may reduce repositioning time within a compact site. An AC crane may reduce mobilisation complexity between projects compared with a crawler crane. The economical option is the one that completes the lift plan reliably with the lowest total project cost, not the one with the lowest nominal capacity or day rate.
Information to send with an enquiry
- load description, verified weight and centre of gravity;
- pick and set locations;
- working radius and required hook height;
- site location and intended mobilisation route;
- access dimensions and overhead restrictions;
- ground data and proposed outrigger support;
- required dates and shift pattern;
- lifting study, drawing, tender specification or load schedule.
RENTEK can review the project information, identify the relevant Tadano family and clarify applicable equipment options and manufacturer availability. Final selection must be confirmed through the correct load chart and engineered lift plan. Price on request.
FAQ
Is a GR crane allowed to travel on public roads?
That depends on the exact model, local rules, route and configuration. Rough-terrain cranes are primarily intended for jobsite mobility; external transport may be required.
Is an AC crane suitable for rough ground?
All-terrain cranes offer jobsite mobility, but they still require suitable access, ground preparation and outrigger support. “All-terrain” does not remove setup requirements.
Is a 100 t AC crane equivalent to a 100 t GR crane?
No. Nominal capacity does not make two machines equivalent. Boom length, load chart, carrier geometry, counterweight and required radius must be compared.
Which family sets up faster?
There is no universal answer. A compact GR may be simpler for repeated lifts within one site, while an AC may require counterweight or attachment handling. The project configuration decides setup time.
Which one is cheaper?
The correct comparison is total project cost, including mobilisation, support transport, setup, ground preparation and crane time.