| Parameters | Explanation and Common Ranges | Key Selection Criteria: |
| Rated lifting capacity | Refers to the maximum weight that the crane is safely allowed to lift, usually in tons (t). Light: 0.5t - 20t Medium: 5t - 50t Heavy: 75t - 800t |
The crane must be heavier than the heaviest single item in your workshop. For grab bucket cranes, this weight includes the weight of the grab bucket itself. |
| Span | Refers to the horizontal distance between the center lines of the tracks on both sides of the workshop, determining the crane's working coverage area, in meters (m). Small span: e.g., 3m - 22.5m Medium span: e.g., 10.5m - 31.5m Large span: e.g., 31.5m and above |
This is determined by the width of the workshop building. It must be determined before the factory design or before bidding for the workshop crane equipment. |
| Lifting height | Refers to the distance from the hook to the ground or the platform where the track is located when it is raised to its highest position, in meters (m). Standard: e.g., 6m - 30m Special: e.g., 85m (for hydropower stations) |
It is also determined by the highest lifting position and the workpiece stacking height, ensuring that it can reach the highest point while safely passing over obstacles below. |
| Working class | A comprehensive indicator reflecting the crane's workload and load capacity, divided into A1 to A8 has eight levels. A3-A5 (Intermediate): Used in warehouses or general workshops. A6-A8 (Heavy/Extra Heavy): Used in metallurgy, casting, and other frequent, high-intensity operations |
This is one of the most important technical indicators for selecting a workshop crane, directly affecting the equipment's lifespan and safety. Choosing an inferior model will result in premature crane failure. |