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BOB-LIFT knuckle boom crane in the factory yard

BOB-LIFT Product Range

4 Ton Cranes

BOB-LIFT builds 8 current crane models rated over 3 t and up to 4 t, in Forklift Fly Jib Cranes, Telescopic Boom Truck Mounted Cranes, Knuckle Boom Truck Mounted Cranes, Knuckle Boom Marine Cranes, Telescopic Boom Marine Cranes: CC125, SQ4SA4, SQ3.2SA3, SQ4ZA4, SQ3.2Z, SQ4ZA3TJ, SQ3.2ZA3TJ, SQ3.2SA4T. Figures from each model's technical drawing.

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4 Ton Knuckle Boom Truck Mounted Crane

4 Ton Knuckle Boom Truck Mounted Crane

SQ4ZA4

Moment: 8.4ton.m
Self weight: 1.25 t

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4 Ton Telescopic Boom Truck Mounted Crane

4 Ton Telescopic Boom Truck Mounted Crane

SQ4SA4

Moment: 8.4
Self weight: 1.25 t

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3.2 Ton Knuckle Boom Truck Mounted Crane

3.2 Ton Knuckle Boom Truck Mounted Crane

SQ3.2Z

Moment: 6.8ton.m
Self weight: 1.35 t

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3.2 Ton Telescopic Boom Truck Mounted Crane

3.2 Ton Telescopic Boom Truck Mounted Crane

SQ3.2SA3

Moment: 7 Ton.m
Self weight: 1.15 t

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4 Ton Knuckle Boom Marine Crane

4 Ton Knuckle Boom Marine Crane

SQ4ZA3TJ

Moment: 8.4
Self weight: 1.05 t

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3.2 Ton Knuckle Boom Marine Crane

3.2 Ton Knuckle Boom Marine Crane

SQ3.2ZA3TJ

Moment: 6.8
Self weight: 1.25 t

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3.2 Ton Telescopic Boom Marine Crane

3.2 Ton Telescopic Boom Marine Crane

SQ3.2SA4T

Moment: 6.8
Self weight: 1.05 t

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4 Ton Forklift Fly Jib Crane

4 Ton Forklift Fly Jib Crane

CC125

Moment: 100 Kn.m
Max. height: 3 m

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How our cranes are made

From steel
to shipment.

Photographed at our factory in Xuzhou, Jiangsu: the steps a crane goes through before it leaves.

01Parts and hydraulics
02Parts and welds
03Assembly halls
04Load and function test
05Lift the crane onto the chassis
06Fix the crane to the frame
07Check the finished truck
08Line up the order
09Wrap the crane
10Load the container

Parts and hydraulics — 01 / 10 Parts and hydraulics Boom sections, cylinders, frames and hydraulic parts are staged next to the assembly line.

Parts and welds — 02 / 10 Parts and welds Boom sections, cylinders and hydraulic parts are checked in the workshop before and during assembly.

Assembly halls — 03 / 10 Assembly halls Knuckle and telescopic booms are assembled in long rows under overhead cranes.

Load and function test — 04 / 10 Load and function test The finished crane is mounted on the test bay and runs through lifting, slewing and outrigger functions under load.

Lift the crane onto the chassis — 05 / 10 Lift the crane onto the chassis An overhead hoist holds the crane while it is placed on the truck frame in the workshop.

Fix the crane to the frame — 06 / 10 Fix the crane to the frame Technicians work under the cab to secure the crane base to the chassis.

Check the finished truck — 07 / 10 Check the finished truck The crane stands complete on the truck with its boom raised for inspection.

Line up the order — 08 / 10 Line up the order Every crane in an order is tested, set on its base or a pallet and lined up in the hall before packing.

Wrap the crane — 09 / 10 Wrap the crane Cranes are wrapped in stretch film before they leave the workshop.

Load the container — 10 / 10 Load the container A hoist or a forklift moves each packed crane into the container.

Also from BOB-LIFT

Mini loaders and dumpers

Mini skid steer loaders, mini dumpers and attachments, on the BOB-LIFT loader site.

Visit bobliftloader.com