The SQZ500T is a 25 ton knuckle boom marine crane. It lifts 25,000 kg at 2.0 m, 9,300 kg at 5.6 m and 2,000 kg at its full 18 m reach, with a 53.9 t·m maximum lifting moment and 360° slewing. It weighs 6,474 kg and was previously listed as the SQ25ZA8T.
Where the 25 ton SQZ500T fits
The SQZ500T is the largest knuckle boom crane in our marine range. Its boom runs out from 4.53 m to 18 m and keeps useful capacity at long radius: 5,300 kg at 9.4 m, 4,300 kg at 11.3 m and 3,000 kg at 15.9 m. Folded, it measures 2,649 × 1,652 × 2,636 mm, so it stows compactly on deck. That suits barges, cargo and supply vessels, ports and quays that lift heavy deck cargo, machinery, steel and project loads every day.
If your loads stay under 20 t, the SQZ430T sits on the same Ø1,400 mm base plate with the same 30-bolt pattern, is rated at 20,000 kg and reaches 16.6 m, at 1,574 kg less self weight. Send us the heaviest load, the radius it must reach and a deck drawing, and we check them against both load charts.
Load at each radius
| 2 m |
25,000 kg |
| 4.2 m |
12,300 kg |
| 5.6 m |
9,300 kg |
| 7.4 m |
6,900 kg |
| 9.4 m |
5,300 kg |
| 11.3 m |
4,300 kg |
| 13.5 m |
3,600 kg |
| 15.9 m |
3,000 kg |
| 18 m |
2,000 kg |
Figures from the SQZ500T load chart, with the boom horizontal. With the boom raised to 80°, the hook reaches about 21 m above the base. Download the SQZ500T load chart (PDF)
Deck mounting dimensions
These figures come from the SQZ500T dimension drawing. Your shipyard or naval architect designs the pedestal and the deck reinforcement for the crane’s 6,474 kg self weight and its 53.9 t·m maximum lifting moment.
| Base plate |
Ø1,400 mm |
| Mounting bolt holes |
30 × Ø33 mm |
| Bolt pattern |
PCD Ø1,290 mm |
| Centre hole in the base plate |
Ø700 mm |
| Folded size (L × W × H) |
2,649 × 1,652 × 2,636 mm |
| Hydraulic supply |
80 L/min at 35 MPa, about 55 kW |
| Oil tank |
260 L |
We can adapt the mounting to your vessel’s deck, for example by changing the pedestal height. Download the SQZ500T dimension drawing (PDF)
Corrosion protection for sea duty
The T in SQZ500T marks the marine version, which receives a multi-layer anti-rust treatment for salt air and spray. How long a crane lasts on the water still depends on routine care: rinse it with fresh water after salt-water work, grease the slewing bearing and pins on schedule, and check hoses, fittings and the winch rope for corrosion and wear.
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