| Single-Girder Top-Running Overhead Crane | 1–20 metric tons | Up to approximately 30 m | FEM 2m–3m ISO M5–M6 Light to moderately repetitive service | Approximately 3–8 m/min for standard lifting; higher speeds may be specified for selected applications | Low Simple structure, fewer wheels and components, generally easy access for routine inspection | Low | General manufacturing, workshops, warehouses, maintenance bays, and material handling with moderate utilization |
| Double-Girder Top-Running Overhead Crane | 10–500 metric tons or more, subject to engineering design | Approximately 10–40 m or more | FEM 3m–5m ISO M6–M8 Heavy, frequent, or continuous-duty service | Approximately 2–12 m/min for lifting; separate higher-speed travel drives are commonly available | Medium More wheels, end trucks, girders, and electrical components require a larger inspection and service program | High | Steel processing, foundries, heavy fabrication, power facilities, shipyards, and high-capacity production lines |
| Underhung Single-Girder Crane | Typically 0.5–10 metric tons | Approximately 6–25 m, depending on building structure | FEM 1Am–3m ISO M4–M6 Light to moderate duty | Approximately 3–8 m/min for standard lifting | Low to Medium Can use existing roof-supported runway systems, but runway alignment and building connections require regular attention | Medium | Facilities with limited floor space, low-headroom areas, assembly lines, machine shops, and buildings where floor columns should be minimized |
| Low-Headroom Single-Girder Crane | 1–10 metric tons | Approximately 8–25 m | FEM 2m–3m ISO M5–M6 Moderate production and maintenance work | Approximately 3–8 m/min for lifting | Low Compact hoist arrangement improves available lift height; standard wear parts are generally accessible | Medium | Workshops, warehouses, HVAC or equipment installation, and applications requiring maximum hook height under existing roof constraints |
| Process Double-Girder Crane with Auxiliary Hoist | 10–250 metric tons main hoist; auxiliary hoist commonly 5–20% of main capacity | Approximately 12–35 m | FEM 4m–5m ISO M7–M8 High-cycle process operation | Approximately 1–10 m/min for main lifting; auxiliary hoist speed is commonly higher | High Requires scheduled inspections for brakes, ropes, sheaves, drives, controls, load-monitoring systems, and safety devices | Very High | Continuous production, billet or coil handling, heavy assembly, controlled-positioning operations, and applications needing two lifting capacities |
| Explosion-Protected Girder Crane | 1–50 metric tons, depending on hazardous-area classification and design | Approximately 8–30 m | FEM 2m–4m ISO M5–M7 Duty must match the hazardous-area assessment | Approximately 1–6 m/min for controlled lifting and positioning | High Specialized electrical equipment, grounding, braking, inspection, and certification requirements increase maintenance effort | High | Paint facilities, chemical plants, gas-related areas, fuel handling, and other locations requiring explosion-protected equipment |
| Outdoor Double-Girder Gantry Crane | 10–500 metric tons or more, subject to site and structural design | Approximately 10–40 m; leg height is project-specific | FEM 2m–5m ISO M5–M8 Intermittent outdoor handling to heavy process service | Approximately 2–10 m/min for lifting; long-travel speed commonly selected around 20–40 m/min | Medium to High Outdoor exposure adds inspection needs for corrosion protection, rails, storm anchoring, wheels, electrical enclosures, and drainage | High | Outdoor yards, precast concrete plants, shipbuilding areas, steel stockyards, construction sites, and locations without a suitable building runway |