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BOB-LIFT

Telescopic Boom Marine Cranes

See all 20 Ton Cranes

20 Ton Telescopic Boom Marine Crane

Model SQ20SA5TSQ20S-T Series

Winch included on every telescopic marine crane

What the winch does: read our winch guide

Max lifting capacity
20,000kg
Max lifting moment
50t·m
Max reach
22m
Lifting height
≈ 24m
Self weight
6,950kg
+86 158 5249 9415 info@boblift.com
20 Ton Telescopic Boom Marine Crane

Engineering data

Technical Specifications

SQ20SA5T

Model code explained

SQ
BOB-LIFT crane
20
20 t capacity class
S
Telescopic boom
A5
1 main boom + 4 hydraulic booms
T
Marine version
✓
Winch: standard

Lifting

Max Lifting Capacity
20,000kg
Max Lifting Moment
50t·m
Rotation Angle
360°
Max Working Radius
22m
Max Lifting Height
≈ 24 m
Max Boom Angle
75°

Hydraulics and power

Recommended Power
55kW
Hydraulic System Flow
80+63L/min
Hydraulic System Pressure
25MPa
Oil Tank Capacity
260 L

Machine

Self Weight
6,950kg
Compare all Telescopic Boom Marine Cranes

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

Dimensions and load chart

SQ20SA5T dimension drawing and 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: 20,000 kg at 2.5 m, 1,500 kg at 22 m.
Lifts (kg) 20,000 12,000 6,300 3,500 2,200 1,500
Reach (m) 2.5 6.3 10.3 14.3 18.3 22

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

Product details · SQ20SA5T

20 Ton Telescopic Boom Marine Crane

20 t telescopic 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 videos

The SQ20SA5T is one of 10 models in our Telescopic Boom Marine Cranes range, which runs from 2 t to 20 t.

The SQ20SA5T is a 20 ton telescopic boom marine crane. It lifts 20,000 kg at 2.5 m, 3,500 kg at 14.3 m and 1,500 kg at its full 22.0 m reach, with a 50 t·m maximum lifting moment and 360° slewing. It weighs 6,950 kg.

Where the 20 ton SQ20SA5T fits

The SQ20SA5T is the largest telescopic marine crane on this list: 20,000 kg at 2.5 m, 1,500 kg at 22.0 m and a 50 t·m lifting moment. It needs two hydraulic circuits (80 + 63 L/min at 25 MPa) from about 55 kW. It suits ports, barges and cargo vessels with a purpose-built pedestal.

Need a folding boom instead? Compare the 20 ton knuckle boom marine crane (SQZ430T).

We size a marine crane by the load and the radius you need, not by vessel length. Send us the heaviest load, the furthest point it must reach and a deck drawing, and we check them against the SQ20SA5T load chart and the deck space the boom and its rest need when stowed.

Deck mounting dimensions

These figures come from the SQ20SA5T dimension drawing. Your shipyard or naval architect designs the pedestal and the deck reinforcement for the crane’s 6,950 kg self weight and its 50 t·m maximum lifting moment.

Base plate Ø1,440 mm
Mounting bolt holes 36 × Ø32 mm
Bolt pattern PCD Ø1,240 mm
Height with the boom stowed 2,757 mm
Self weight 6,950 kg
Max. lifting moment 50 t·m

We can adapt the mounting to your vessel’s deck, for example by changing the pedestal height. Download the SQ20SA5T dimension drawing (PDF)

Corrosion protection for sea duty

The T in SQ20SA5T marks the marine version, which receives a multi-layer anti-rust treatment for salt air and spray. How long a crane lasts in a harbour still depends on routine care: rinse it with fresh water after salt-water work, grease the slewing bearing, the boom pins and the slide pads of the telescopic sections on schedule, and check hoses and fittings for corrosion.

From our customers

A customer in New Zealand has sent photos of this model. See their photos under Customer feedback

All telescopic boom marine cranes · How to choose a marine crane

  • Capacity class

    20 t

    Max lifting moment 50 t·m

  • Telescopic boom sections

    5

    1 main boom + 4 hydraulic booms

  • Hydraulic flow

    80+63 L/min

    25 MPa · 55 kW recommended

Choosing the right model

For lighter loads, the SQ16SA5T at 16 t is the class below.

Before ordering, check that the vessel's hydraulic supply can deliver 80+63 L/min at 25 MPa. We recommend 55 kW of hydraulic power.

Telescopic Boom Marine Crane

Product technical advantages

  • High-strength steel structure

    High-strength steel structure

    Compact, light and strong steel structure.

  • Custom installation

    Custom installation

    Pedestal mounting tailored to your deck.

  • Optional attachments

    Optional attachments

    Drill pipe, basket or grapple. The winch comes as standard.

  • Operation modes

    Operation modes

    Manual levers, overhead seat or wireless remote.

  • 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

  1. Boom sections 01

    Boom sections

    Telescopic boom sections are finished and fitted before assembly.

  2. Assembly 02

    Assembly

    Columns, winches and control valves are assembled in our Xuzhou workshop.

  3. 03

    Marine test stand

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

  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 SQ20SA5T

About the SQ20SA5T

What hydraulic supply does the SQ20SA5T need?

80+63 L/min at 25 MPa. We recommend 55 kW of hydraulic power. Send us the vessel's hydraulic data and we confirm the match when we quote.

What warranty and minimum order apply to the SQ20SA5T?

The SQ20SA5T carries a 12-month warranty, and you can order from 1 unit.

Can the SQ20SA5T lift 20 tons at full reach?

No. It lifts 20,000 kg at 2.5 m, and the capacity falls with radius to 1,500 kg at 22.0 m. Check the load chart on this page at your working radius.

What base plate and bolts does the SQ20SA5T need on deck?

A Ø1,440 mm base plate with 36 × Ø32 mm holes on a PCD Ø1,240 mm bolt pattern. Your yard designs the pedestal and the deck reinforcement for the crane’s 6,950 kg self weight and 50 t·m lifting moment.

What size of boat or barge suits the SQ20SA5T?

We size the crane by load and reach, not by vessel length. The SQ20SA5T weighs 6,950 kg and needs 80 + 63 L/min at 25 MPa from about 55 kW, supplied by the vessel’s hydraulic system or by an electric or diesel power unit we can provide. Your naval architect should confirm deck strength and stability with the crane at its full 22.0 m reach.

Is the SQ20SA5T approved by a classification society?

No. Our hydraulic marine cranes for harbours, barges, workboats and inshore vessels are not certified by a classification society. If your vessel or project needs class approval, confirm it with us before you order.

How tall is the SQ20SA5T with the boom stowed?

About 2,757 mm from the base plate. With the boom extended it reaches a radius of 22.0 m.

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 load, the outreach you need over the ship's side, the vessel type and where the crane will stand on deck. Our engineers confirm a practical model and mounting before quotation.

How is the crane mounted on the vessel?

The crane stands on its base plate, fixed to the deck or to a raised pedestal, and the base plate size is on the product drawing. Send us the deck structure at the crane position: we adapt the mounting to your vessel and confirm it with you.

Does this crane suit our sea conditions?

Tell us where the vessel works, whether you lift in port or at sea, and the conditions you expect during lifting. Our engineers check them against the load chart and confirm whether this model suits the job before quotation.

How is the crane protected against corrosion?

Tell us whether the vessel works in salt water or fresh water and where the crane sits on deck. We confirm the paint and surface protection for your conditions in writing with the quotation.

What is the delivery time, and which documents come with the order?

Lead time depends on the configuration, order quantity and destination, and we confirm it in writing with your quotation. Each order ships with a commercial invoice, packing list and bill of lading, plus the product documents required for the confirmed order.

Do you help with installation and after-sales service?

Your shipyard fits the crane with our installation guidance and remote technical support. Cranes carry a 12-month warranty, we reply to service requests within 12 hours, and common spare parts ship within 48 hours.

Guides and news

Read before you buy

All news

Need a crane matched to your vessel and lifting task?

Send the load, the outreach over the ship's side, the vessel type, the crane position on deck and the destination port. BOB-LIFT will help match a practical configuration.

Contact Engineer

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