Knuckle Boom Marine Cranes

SQ8ZA4TJ8 Ton Knuckle Boom Marine Crane SQ8ZA4TJ

Previous model No longer in regular production. It can still be built to order.

Current model View SQ8ZA6TJ Compare with the current range

SQ: Truck mounted crane
8: 8 t capacity class
Z: Knuckle boom
A4: 1 main boom + 3 hydraulic booms
T: Marine version
J: With winch

Max Lifting Capacity: 8000kg
Max Lifting Moment: 16.7t·m
Recommended Power: 25kW
Hydraulic System Flow: 40L/min

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Or message us +86 158 5249 9415 info@boblift.com

12-month warranty
Order from 1 unit
Shipping & warranty

Confirm your configuration and current availability with our team.

8 Ton Knuckle Boom Marine Crane SQ8ZA4TJ

Engineering data

SQ8ZA4TJ Specifications

Lifting

Max Lifting Capacity: 8000kg
Max Lifting Moment: 16.7t·m
Rotation Angle: 360°
Winch: Included

Hydraulics and power

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

Machine

Self Weight: 2550kg

Figures from the BOB-LIFT brochure for this range. Confirm the final specification with our team before ordering.

Compare all Knuckle Boom Marine Cranes

Dimensions and load chart

Select the drawing to view it full size.

Product details · SQ8ZA4TJ

8 Ton Knuckle Boom Marine Crane SQ8ZA4TJ

The SQ8ZA4TJ is a 8 t knuckle boom marine crane with a maximum lifting moment of 16.7 t·m. It runs on a recommended 25 kW power supply with 40 L/min of hydraulic flow at 28 MPa, weighs 2550 kg and offers 360° slewing.

SQ8ZA4TJ with winch at our Xuzhou factory (0:55)

Capacity class

8 t

Max lifting moment 16.7 t·m
Knuckle boom sections

4

1 main boom + 3 hydraulic booms
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 SQ10ZA6TJ at 10 t. For lighter loads, the SQ6.3ZA4TJ at 6.3 t is the class below.

Before ordering, check that the vessel's hydraulic supply can deliver 40 L/min at 28 MPa. We recommend 25 kW of hydraulic power.

Knuckle Boom Marine Crane

Product technical advantages

High-strength steel structure

Compact, light and strong steel structure.
Custom installation

Pedestal mounting tailored to your deck.
Optional attachments

Winch, drill pipe, basket or grapple.
Operation modes

Manual levers, overhead seat or wireless remote.
Dual four-bar linkage

Reverse-angle reach for flexible work.

Dedicated torque limiter Load moment limiter, safety certified.
Marine anti-rust treatment Multi-layer anti-rust process for sea duty.

Manufacturing & delivery

From our workshop to your port

01

Assembly

Slewing base, column and booms are assembled by hand in our Xuzhou workshop.
02

Marine test stand

Mounted on a deck-style stand, the crane runs every boom and slewing motion before release.
03

Final check

Finished cranes are inspected and lined up for dispatch.
04

Packing

Wrapped in film and strapped to protect paint and hydraulics in transit.
05

Container loading

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

Shipping & warranty

Shipping, warranty and documents

How the SQ8ZA4TJ reaches you, and what happens after it arrives.

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

Marine Cranes Brochure

PDF · 12 pages · 8.3 MB

Download PDF
Dimensions and load chart
SQ8ZA4TJ Specifications

FAQ

Questions about the SQ8ZA4TJ

About the SQ8ZA4TJ

01 What hydraulic supply does the SQ8ZA4TJ need?

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

02 What warranty and minimum order apply to the SQ8ZA4TJ?

The SQ8ZA4TJ 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