The SQ8ZA6+1 is an 8 ton knuckle boom truck crane: the six-section SQ8ZA6 with a manual jib on its last boom. It lifts 8,000 kg at 2 m, 3,700 kg at 4.506 m and 650 kg at its full 16.8 m reach with the jib extended, with a maximum lifting moment of 16.7 t·m and 360° slewing. The crane itself weighs 3,500 kg.
What the manual jib adds
The +1 in the model name is a manual jib: an extra boom section that the operator extends by hand and pins when a job needs more reach. It takes the reach from 14.68 m on the hydraulic booms to 16.8 m, and with the boom raised to 84° the hook reaches about 19 m above the ground. The jib adds about 50 kg, so the crane weighs 3,500 kg against 3,450 kg for the SQ8ZA6.
Stowed, the SQ8ZA6+1 is 2,460 mm wide and 2,340 mm high and takes about 1,153 mm of chassis length behind the cab. It suits heavy trucks handling steel, precast concrete and machinery, and building sites where loads must be set down well away from the truck.
Rated capacity always depends on radius. At 8.51 m the SQ8ZA6+1 lifts 1,820 kg and at 12.63 m it lifts 1,160 kg, so check the weight of your heaviest regular load at the distance you need before you choose a tonnage.
Load at each radius
| 2 m |
8000 kg |
| 4.506 m |
3700 kg |
| 6.49 m |
2470 kg |
| 8.51 m |
1820 kg |
| 10.56 m |
1420 kg |
| 12.63 m |
1160 kg |
| 14.68 m |
850 kg |
| 16.8 m |
650 kg (with the manual jib) |
Figures from the SQ8ZA6+1 load chart with the boom horizontal; the 16.8 m figure is with the manual jib extended. Do not lift more than the chart shows at your working radius. Download the SQ8ZA6+1 load chart (PDF)
Mounting it on your truck
Your body builder mounts the crane on the chassis behind the cab, using these figures from the dimension drawing:
| Crane length along the chassis |
1153 mm |
| Outrigger span |
2310–5610 mm |
| Width of the crane when stowed |
2460 mm |
| Height of the crane when stowed |
2340 mm |
| Hydraulic supply |
40 L/min at 28 MPa, about 25 kW |
| Oil tank |
160 L |
Send us your truck make, model and wheelbase, and we check that the chassis and power take-off suit the crane before you order. Download the SQ8ZA6+1 dimension drawing (PDF)
Warranty and service
BOB-LIFT covers the whole crane for 12 months. Common spare parts leave the factory within 48 hours, and our service team answers within 12 hours and can guide repairs by video. Cranes ship from Lianyungang, Qingdao or Shanghai.
All knuckle boom truck cranes · How to choose a knuckle boom crane
Optional attachments
- Hydraulic gripper opened and closed by its own cylinder to grab and release loads.
- Clamshell bucket for loading, unloading and light digging of waste, chippings and soil.
- Orange peel grab for scrap and bulk material.
- Timber grapple for logs and timber.
- Auger for tree-planting holes, utility poles, foundation piles and soil sampling.
Certification
The SQ8Z series holds a CE certificate of conformity under the EU Machinery Directive 2006/42/EC.
