| Parameter Item | Unit | Light Duty (Z Series) | Medium Duty (SZ Series) | Heavy Duty (U Series) | Extra Heavy Duty (K/UH Series) |
|---|---|---|---|---|---|
| Model Example | - | Z25, Z30 | SZ1-30, SZ2-40 | U47, U133 | K6-20, UH3.2 |
| Rated Bucket Capacity | m³ | 0.5~2.5 | 2.0~5.0 | 2.5~8.0 | 3.0~12.0 |
| Bulk Material Density | t/m³ | 0.6~1.0 (Coal, Grain) |
1.1~2.0 (Coke, Sand & Gravel) |
1.7~2.5 (Ore, Clay) |
2.5~3.0 (Iron Ore, Steel Slag) |
| Matched Crane Capacity | t | 5~10 | 10~16 | 16~25 | 25~50 |
| Grab Bucket Self Weight | t | 1.5~3.0 | 3.5~6.0 | 6.0~12.0 | 12.0~20.0 |
| Pulley Ratio | - | 4 | 5 | 6 | 6~8 |
| Pulley Diameter | mm | φ300~φ350 | φ350~φ450 | φ450~φ600 | φ600~φ800 |
| Steel Wire Rope Diameter | mm | φ14~φ18 | φ18~φ22 | φ22~φ28 | φ28~φ40 |
| Closed Overall Height | mm | 2200~2900 | 3000~3800 | 3800~4600 | 4600~5500 |
| Open Overall Height | mm | 2700~3400 | 3600~4400 | 4400~5200 | 5200~6200 |
| Maximum Opening Width | mm | 2400~3200 | 3200~4000 | 4000~4800 | 4800~5800 |
| Bucket Width | mm | 1200~1600 | 1600~2200 | 2200~2800 | 2800~3500 |
| Working Class | - | A5~A6 | A6~A7 | A7~A8 | A8 |
| Main Material | - | Q235B | Q355B | Q355B + Wear-resistant Plate | Wear-resistant Steel |
| Application | - | Coal yard, Grain depot, Light bulk materials | Sand yard, Coke yard, General bulk cargo | Limestone, Ore, Heavy clay | Iron ore, Steel slag, Port heavy-load operation |