Choosing a crane by maximum rated capacity alone often leads to the wrong machine. You also need to check working radius charts, outrigger space, safety devices, and inspection history. For used cranes, documentation and mechanical condition are critical.
1. Match crane type to the job
| Type | Strength | Best for |
|---|---|---|
| Rough-terrain crane | Mobility on uneven sites | General construction lifting |
| All-terrain crane | Higher capacity and road travel | Heavy module installation |
| Truck crane | Easier public-road movement | Transport + on-site lifting |
| Mini / spider crane | Access into tight spaces | Indoor, rooftop, narrow sites |
2. Specs you must verify
- Rated capacity: check the load chart at your real working radius
- Boom length: enough height and outreach for the lift plan
- Outrigger spread: fits available setup space
- Safety systems: overload protection, moment limiter, alarms
3. Used crane inspection priorities
| Item | What to inspect | Risk if ignored |
|---|---|---|
| Wire rope | Broken wires, rust, wear | Failure during lifting |
| Hydraulic cylinders | Leaks and rod damage | Power loss and high repair cost |
| Slewing / derricking | Noise, play, delayed response | Lower precision and safety |
| Carrier / outriggers | Cracks, deformation, oil leaks | Stability risk |
| Inspection records | Periodic statutory checks | Compliance and resale value |
4. Transport and commissioning notes
Cranes are heavy and wide. Plan access routes, road restrictions, and site preparation together with the purchase decision. Delivery method and first setup should be confirmed early.
Minami Kenki supports crane sourcing, on-site inspection, nationwide transport, and trade-in/buyback. Share your lift requirements and we will help shortlist suitable used units.
Need help choosing equipment?
Tell us your work site, budget, and target machine. We will suggest suitable stock and arrange inspection.
Ask an Expert Inventory