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Knuckle Boom Truck Mounted Cranes

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8 Ton Knuckle Boom Truck Mounted Crane

Model SQ8ZA6+1SQ8Z Series

Choose your configuration

4 configurations in this series

Boom sections

1 main boomStandard

+1 = one added manual extension

Manual extension (+1)

Compared with SQ8ZA6: Max reach ⁦+2.12 m⁩ · Lifting height ⁦+2 m⁩ · Self weight ⁦+50 kg⁩

Max lifting capacity
8,000kg
Max lifting moment
16.7t·m
Max reach
16.8m
Lifting height
≈ 19m
Self weight
3,500kg
8 Ton Knuckle Boom Truck Mounted Crane SQ8ZA6+1

Engineering data

Technical Specifications

SQ8ZA6+1

Model code explained

SQ
BOB-LIFT crane
8
8 t capacity class
Z
Knuckle boom
A6
1 main boom + 5 hydraulic booms
+1
1 added manual extension

Choose your configuration

Model Configuration Max reachLifting heightSelf weight
SQ8ZA4 A4 · No winch 10.52 m ≈ 13 m 3,050 kg
SQ8ZA4J A4 · With winch 10.52 m ≈ 13 m —
SQ8ZA5 A5 · No winch 12.63 m ≈ 15 m 3,250 kg
SQ8ZA5J A5 · With winch 12.63 m ≈ 15 m —
SQ8ZA6 A6 · No winch 14.68 m ≈ 17 m 3,450 kg
SQ8ZA6+1 A6 · No winch · +1 16.8 m ≈ 19 m 3,500 kg
SQ8ZA6J A6 · With winch 14.68 m ≈ 17 m —
SQ8ZA6J+1 A6 · With winch · +1 16.8 m ≈ 19 m —

Knuckle boom truck mounted cranes can be built with or without a winch.

+1 = one added manual extension

— Winch version: about 70–110 kg heavier, exact self weight confirmed with your quote

Lifting

Max Lifting Capacity
8,000kg
Max Lifting Moment
16.7t·m
Rotation Angle
360°
Max Working Radius
16.8m
Max Lifting Height
≈ 19 m
Max Boom Angle
84°

Hydraulics and power

Recommended Power
25kW
Hydraulic System Flow
40L/min
Hydraulic System Pressure
28MPa
Oil Tank Capacity
160 L

Machine

Self Weight
3,500kg
Outrigger Span
2310–5610 mm
Compare all Knuckle Boom Truck Mounted Cranes

Figures from the BOB-LIFT technical drawings. Confirm the final specification with our team before ordering.

Dimensions and load chart

SQ8ZA6+1 dimension drawing

SQ8ZA6+1 load chart

Select the drawing to view it full size.

How much it lifts at each reach The further the hook is from the crane, the less it can lift: 8,000 kg at 2 m, 650 kg at 16.8 m.
Lifts (kg) 8,000 3,700 2,470 1,820 1,420 1,160 850 650
Reach (m) 2 4.51 6.49 8.51 10.56 12.63 14.68 16.8

Reach is measured from the slewing centre to the hook. Figures from the drawing above.

Product details · SQ8ZA6+1

8 Ton Knuckle Boom Truck Mounted Crane SQ8ZA6+1

8 t knuckle boom truck mounted crane

More videos4

Series video: it shows a crane of the same capacity and boom type, so paint and options can differ from this model.

More videos

The SQ8ZA6+1 is one of 18 models in our Knuckle Boom Truck Mounted Cranes range, which runs from 1.6 t to 50 t.

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.

  • Capacity class

    8 t

    Max lifting moment 16.7 t·m

  • Knuckle boom sections

    6+1

  • Hydraulic flow

    40 L/min

    28 MPa · 25 kW recommended

Choosing the right model

Need more than 8 t? The next class up is the SQ10ZA6 at 10 t. For lighter loads, the SQ6.3ZA5 at 6.3 t is the class below.

Before ordering, check that the truck's power take-off can deliver 40 L/min at 28 MPa. We recommend 25 kW of hydraulic power. Its self weight of 3500 kg adds to the load on the truck, so allow for it in the payload.

Manufacturing & delivery

From our workshop to your port

  1. Assembly 01

    Assembly

    Slewing base, column and booms are assembled by hand in our Xuzhou workshop.

  2. Load test 02

    Load test

    The crane lifts test weights through its working range before release.

  3. Final check 03

    Final check

    Finished cranes are inspected and lined up for dispatch.

  4. Packing 04

    Packing

    Wrapped in film and strapped to protect paint and hydraulics in transit.

  5. Container loading 05

    Container loading

    Loaded into containers at the factory and shipped to your port.

Shipping & warranty

Shipping, warranty and documents

Shipping

Lead time and container loading are confirmed with your quotation.

Warranty and parts

12 months

Send the model, serial number and a photo or video of the issue; our team guides the repair and ships the parts.

Order from 1 unit

Documents

FAQ

Questions about the SQ8ZA6+1

About the SQ8ZA6+1

What hydraulic supply does the SQ8ZA6+1 need?

40 L/min at 28 MPa. We recommend 25 kW of hydraulic power. Send us the truck's power take-off data and we confirm the match when we quote.

What warranty and minimum order apply to the SQ8ZA6+1?

The SQ8ZA6+1 carries a 12-month warranty, and you can order from 1 unit.

Not answered here?

Send us your question and our team replies with answers for your site.

+86 158 5249 9415

Ordering and service

Which configuration should we choose for this model?

Send the working conditions, destination and site access details to BOB-LIFT. The engineering team will confirm a practical configuration before quotation.

Can the crane be customized for our working conditions?

BOB-LIFT can adjust configuration around lifting radius, site access, operation scenario and destination requirements.

What is the typical delivery time?

Lead time depends on the configuration, order quantity and destination. We confirm it in writing with your quotation.

What export documents are provided?

Each order ships with a commercial invoice, packing list and bill of lading, plus the product documents required for the confirmed order.

Do you provide installation and operation training?

We can mount the crane on your truck before shipping. For installation on site, our team provides installation guidance and remote technical support, and our Service & Operation page has short videos on checks before and during lifting.

What after-sales support is available?

Cranes carry a 12-month warranty. Send the model, serial number and a photo or video of the issue; our team guides the repair and ships the parts.

Guides and news

Read before you buy

All news

Need a crane matched to your site and lifting task?

Send your working radius, load requirement, site access, destination country, and delivery schedule. BOB-LIFT will help match a practical configuration.

Contact Engineer

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