Telescopic Boom vs Knuckle Boom Crane: How to Choose the Right One for You

Telescopic boom cranes and knuckle boom cranes are the two main types of crane trucks, with significant differences in structure, performance, and application scenarios.

I. What are the differences between telescopic boom cranes and knuckle boom cranes?

▶ Structure and Working Principle

● Telescopic boom crane: Uses a wire rope + drum hoisting system, with a straight telescopic boom structure. When traveling, the boom is stowed horizontally between the cab and the cargo area.
● Knuckle boom crane: Uses a jointed structure with multiple hydraulic cylinders, foldable and multi-angle extendable, similar to a robotic arm.

▶ Operational Flexibility

● Knuckle boom crane: Suitable for tight spaces (e.g., factories, warehouses, city streets), with 360° rotation and high flexibility.
● Telescopic boom crane: Requires a larger working radius, performs better in open areas, and is limited in narrow environments.

▶ Working Performance

● Working radius: Under the same boom length, the telescopic boom crane has a wider working radius and can extend its reach by paying out the wire rope.
● Lifting height: Knuckle boom cranes have relatively lower lifting height but offer more precise lifting.
● Vertical lifting control: Telescopic boom cranes provide more stable control via wire rope; knuckle boom cranes struggle with precise vertical lifting due to the hydraulic system.

▶ Operation and Maintenance

● Operational difficulty: Telescopic boom cranes are easier to operate; knuckle boom cranes require coordination of multiple hydraulic cylinders, making them more complex to operate.
● Maintenance cost: Telescopic boom cranes have a simpler structure and are easier to maintain; knuckle boom cranes have a complex hydraulic system and higher maintenance costs.

▶ Price and Space Occupancy

● Price: For the same tonnage, knuckle boom cranes are more expensive due to their complex structure and high precision requirements.
● Traveling space: Knuckle boom cranes can be fully folded, taking up less space; telescopic boom cranes must be extended horizontally, occupying more space.

HOWO truck mounted telescopic boom crane	HOWO truck mounted knuckle boom crane

Comparison of telescopic boom cranes and knuckle boom cranes

HOWO truck with telescopic crane	HOWO truck with knuckle crane

II. How to choose?

There is no “best” crane, only the “most suitable” one. Choose based on your actual working environment:

 ▶ Choose a knuckle boom crane if:

● Operating in narrow, confined spaces (e.g., workshops, warehouses, tunnels);
● Requiring multi-functional attachments or special operations;
● Demanding high mobility and flexibility.

▶ Choose a telescopic boom crane if:

● Operating mainly in open areas (e.g., construction sites, docks, highways);
● Prioritizing large working radius and vertical lifting precision;
● Seeking low cost, easy operation, and easy maintenance.

HOWO telescopic crane truck	HOWO knuckle crane truck

Take a look at HOWO crane trucks that may be of interest to you:

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HOWO 8x4 knuckle boom crane truck