Knuckle Boom Marine Cranes
Previous model No longer in regular production. It can still be built to order.
Current model View SQ2ZA2TJ Compare with the current range
Confirm your configuration and current availability with our team.
Engineering data
Figures from the BOB-LIFT brochure for this range. Confirm the final specification with our team before ordering.
Compare all Knuckle Boom Marine CranesDimensions and load chart
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Product details · SQ2ZA4T
Function test · 2 t knuckle boom marine crane
More videos2
Series video: it shows a crane of the same capacity and boom type, so paint and options can differ from this model.
More videosThe SQ2ZA4T is a 2 t knuckle boom marine crane with a maximum lifting moment of 4.2 t·m. It runs on a recommended 9 kW power supply with 20 L/min of hydraulic flow at 20 MPa, weighs 630 kg and offers 360° slewing.
Capacity class
2 t
Max lifting moment 4.2 t·m
Knuckle boom sections
4
1 main boom + 3 hydraulic booms
Hydraulic flow
20 L/min
20 MPa · 9 kW recommended
Need more than 2 t? The next class up is the SQ3.2ZA3TJ at 3.2 t. For lighter loads, the SQ1ZA3TJ+1 at 1.6 t is the class below.
Before ordering, check that the vessel's hydraulic supply can deliver 20 L/min at 20 MPa. We recommend 9 kW of hydraulic power.
Knuckle Boom Marine Crane
Compact, light and strong steel structure.
Pedestal mounting tailored to your deck.
Winch, drill pipe, basket or grapple.
Manual levers, overhead seat or wireless remote.
Reverse-angle reach for flexible work.
Manufacturing & delivery
01
Slewing base, column and booms are assembled by hand in our Xuzhou workshop.
Mounted on a deck-style stand, the crane runs every boom and slewing motion before release.
03
Finished cranes are inspected and lined up for dispatch.
04
Wrapped in film and strapped to protect paint and hydraulics in transit.
05
Loaded into containers at the factory and shipped to your port.
Shipping & warranty
Lead time and container loading are confirmed with your quotation.
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
FAQ
20 L/min at 20 MPa. We recommend 9 kW of hydraulic power. Send us the vessel's hydraulic data and we confirm the match when we quote.
The SQ2ZA4T 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.
Send the working conditions, destination and site access details to BOB-LIFT. The engineering team will confirm a practical configuration before quotation.
BOB-LIFT can adjust configuration around lifting radius, site access, operation scenario and destination requirements.
Send the working conditions, destination and site access details to BOB-LIFT. The engineering team will confirm a practical configuration before quotation.
Send the working conditions, destination and site access details to BOB-LIFT. The engineering team will confirm a practical configuration before quotation.
Send the working conditions, destination and site access details to BOB-LIFT. The engineering team will confirm a practical configuration before quotation.
Send the working conditions, destination and site access details to BOB-LIFT. The engineering team will confirm a practical configuration before quotation.
Model history
Previous models are configurations we no longer build as standard. They can still be built to order.
SQ2ZA4TThis model
2 Ton Knuckle Boom Marine Crane SQ2ZA4T
Related products
800 kg · Knuckle Boom SQ08ZA3TJ+1
Moment1.3 t·m
Self weight220 kg
View Details
1.6 t · Knuckle Boom SQ1ZA3TJ+1
Moment2.2 t·m
Self weight380 kg
View Details
2 t · Knuckle Boom SQ2ZA2TJ
Moment4.2 t·m
Self weight590 kg
View Details
3.2 t · Knuckle Boom SQ3.2ZA3TJ
Moment6.8 t·m
Self weight1.24 t
View Details
Guides and news
Send your working radius, load requirement, site access, destination country, and delivery schedule. BOB-LIFT will help match a practical configuration.
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