Rough Terrain Crane
A rough terrain crane is a mobile crane on a single-engine, four-wheeled carrier with large flotation tires, built to lift on uneven or unprepared ground. It travels around the jobsite under its own power but is not road-legal, moving between sites by trailer. The catalog lists 222 models from brands including Grove, Tadano, Link-Belt, XCMG and Sany.
Cat classes
Elija una clase de tamaño — la capacidad y el alcance varían en la gama.
Cómo funciona
One engine drives both travel and crane functions. Four-wheel drive and crab or four-wheel steering move the crane across mud, gravel and slopes to the pick location, where outriggers extend and level the machine before the telescopic boom lifts. Many models also carry a reduced pick-and-carry chart for moving loads short distances on tires. The operator works from a single cab that both drives and lifts, following the load chart for the configured boom length, counterweight and outrigger spread, with the rated-capacity limiter monitoring every pick.
Tipos y variantes
- Compact rough terrain cranes
- Under 35 ton capacity for tight sites, HVAC sets, precast and steel on small commercial work.
- Mid-range rough terrain cranes
- 35–60 ton class for most commercial steel and mechanical picks.
- High-capacity rough terrain cranes
- 60–100 ton and 100+ ton models for tilt-up panels, tanks, heavy mechanical and industrial plant work off pavement.
- Jib-equipped configurations
- Swing-away or fixed jibs that extend reach for rooftop and long-radius picks.
Especificaciones clave
| Especificación | Rango típico | Qué significa |
|---|---|---|
| Lifting capacity | 5 to 1,000 tons | Maximum rated pick at minimum radius; the primary sizing figure. |
| Max reach | 5.2 to 68.0 feet | Maximum horizontal radius from the center of rotation. |
| Outrigger spread | Varies by model | The footprint required to achieve full-chart capacity on site. |
| Pick-and-carry rating | Varies by model | The reduced chart for traveling with a suspended load on tires. |
Cómo la industria lo dimensiona
Rough terrain cranes are sized by maximum rated capacity in tons. The catalog groups machines into up to 35 ton, 35–60 ton, 60–100 ton and 100+ ton classes. Selection works backwards from the heaviest lift and its radius on the load chart, then confirms boom length for the required hook height and checks site access and ground bearing for the outrigger footprint.
Aplicaciones
- Structural steel and precast placement on low and mid-rise builds
- Tilt-up wall panel installation
- Plant, refinery and utility maintenance lifts
- Bridge girder and beam placement
- Rooftop HVAC and mechanical unit setting on unpaved sites
Seguridad y operación
- OSHA 1926.1400 (Subpart CC) applies: inspected rigging, qualified riggers and a signal person whenever the operator's view of the load path is obstructed.
- Minimum power-line clearances per OSHA 1926.1407-1411 are maintained, with a dedicated spotter near energized lines.
- Outriggers are fully extended on mats sized for the ground; partially set outriggers require the matching reduced chart.
- Ground conditions are assessed after weather changes — the crane's off-road mobility does not remove the need for stable bearing under the outriggers.
Normas y certificaciones
- OSHA · 29 CFR 1926.1427
- Operator certification requirement for construction crane work.
- ASME · B30.5
- Mobile crane safety standard covering rough terrain cranes.
- OSHA · 29 CFR 1926.1400 (Subpart CC)
- Construction crane rules — assembly, signals, inspections, clearances.
Preguntas frecuentes
Can a rough terrain crane drive on public roads?
When is a rough terrain crane chosen over a truck or all-terrain crane?
What does the size class number mean?
Comparar modelos populares
Buscar por especificación →Normalizado a las mismas unidades. Un guion significa que el valor no fue publicado.
| Modelo | Capacidad de elevación | Alcance máx |
|---|---|---|
| Broderson RT-400 | 39,683 lb (18 t) | 68 ft (20.7 m) |
| Grove GMK7550 | 1,100,107 lb (499 t) | 53 ft (16.2 m) |
| Grove GRT655 | 110,231 lb (50 t) | 34.9 ft (10.6 m) |
| Grove GRT655L | 110,231 lb (50 t) | 35.3 ft (10.8 m) |
| Grove GRT765 | 130,073 lb (59 t) | 39.2 ft (11.9 m) |
| Grove GRT780 | 160,937 lb (73 t) | 39.2 ft (11.9 m) |
Equipos relacionados
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Fuentes
Cada especificación se verifica con los datos publicados por el fabricante, con la fuente enlazada como referencia.
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