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4 Ton Knuckle Boom Truck Mounted Crane

As the professional manufacture, BOB-LIFT would like to provide you 4 Ton Knuckle Boom Truck Mounted Crane. And we will offer you the best after-sale service and timely delivery.
  • SQ4ZA2


BOB-LIFT is one of the professional 4 Ton Knuckle Boom Truck Mounted Crane manufacturers and suppliers in China. We are willing to work hand in hand with every customer for mutual benefit and development. Over the years, we have been focusing on research in the field of 4 Ton Knuckle Boom Truck Mounted Crane. With rich experience and professional technology, we have established our own BOB-LIFT brand in China and have achieved good response. Our products are durable and easy to maintain, favored by domestic and foreign customers.

4 Ton Knuckle Boom Truck Mounted Crane Specifications

Product Parameters (SQ4ZA2)
Max Lifting Capacity 4000kg
Max Lifting Moment 8.4ton.m
Recommend Power 14KW
Hydraulic System Flow 25L/Min
Hydraulic System Pressure 26Mpa
Coil Tank Capacity 60L
Installation Space 850mm
Self Weight 1250kg
Rotation Angle 400°

4 Ton Knuckle Boom Truck Mounted Crane Features And Applications

1. Advanced development & analysis make sure design is very reliable

2. Using two-section telescopic cylinder design, one of the cylinder push the second large boom, another cylinder push the rest of the telescopic boom by the pulley block

and wirerope. To ensure that the crane has strong lifting capacity in the middle distance and effectively protect the wire rope in the boom.

3. The more symmetrical center design of pentagon & hexagon boom make it has bigger anti-bending capacity.

4. The boom interface is made of strong steel plate, and the U-shaped arm is used for the crane above 8T, which makes the cross-section bending resistance stronger.

5. The crane above 6.3T adopts square legs, which can better protect the cylinder.

6. Compact boom head and tail design, make the boom length to reach maximum, prolong the working life of hydraulic system.

7. The integer lifting winch improved the working efficient greatly and prolonged work life of hydraulic system.

8. Integral boom hear structure with more strength. Boom head adopting integral structure, greater intensity. Split head design reduces the boom head carrying capacity.

9. Lifting mechanism hydraulic winch relies on disc spring and friction brake, stable and reliable, efficient, low noise, small calorific value; Rely on hydraulic balanced valves balancing weights when falling, greatly improve product reliability.

10. Ati-slewing impulse equipment that make vehicle running safely.

11. Water-based paint, more environmentally friendly.

4 Ton Knuckle Boom Truck Mounted Crane details:

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Xuzhou BOB-LIFT Construction Machinery Co., Ltd. is a high-tech enterprise specializing in the design, development, manufacture and sales of truck-mounted cranes. With a factory area of over 37,000 square meters, the company's main products include SQ08-SQ55 series of folding and telescopic boom truck-mounted cranes and related variants such as truck mounted crane, marine crane, pickup crane.




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