Overview
Most crawler cranes available on the market are split into two main categories: lattice boom crawler cranes and telescopic crawler cranes. This guide will walk you through all their core distinctions and unique strengths, and help you figure out how to pick the right crawler crane to match your specific job site conditions.
What Is a Lattice Boom Crawler Crane?
Structure
The standout structure of a lattice boom crawler crane lies in its boom, built by welding steel tubes into triangular hollow truss sections. Manufacturers produce each boom segment as a standardized independent unit. You extend the boom by pinning these sections together, letting you easily add or remove segments to adjust total boom length as needed. Fitted with auxiliary jibs and superlift attachments, the main boom can stretch past 100 meters. What’s more, the hollow truss design lets wind pass straight through, greatly cutting side wind load even during heavy gusts.
Advantages
A lattice boom crawler crane features a hollow triangular truss frame made of steel tubes. When comparing booms of equal overall length, this design weighs far less than solid hydraulic telescopic box booms. Less of the crane’s lifting power is wasted supporting the boom’s own weight, which translates to a higher rated lifting capacity. Only lattice boom crawler cranes are capable of heavy lifting tasks up to thousands of tons.
Its open hollow grid-shaped structure lets wind flow freely through the structure, creating far less wind resistance during high winds compared to fully enclosed telescopic box booms. The boom comes in separate, modular sections that you can add or remove to adjust total length. When fitted with an auxiliary jib, the main boom can extend beyond 100 meters. Each boom segment detaches individually. If any section suffers damage, operators only swap that single segment instead of the whole boom, which cuts long-term maintenance costs.
Typical Applications
1 Wind Power Project
Once fully assembled, the boom of a lattice boom crawler crane reaches an extremely impressive vertical height, making it capable of hoisting oversized wind turbine nacelles and lengthy rotor blades with ease. Thanks to its hollow truss framework, this boom design creates minimal wind resistance. It works perfectly for wind farm construction sites where powerful crosswinds are common.
2 Large Bridge Engineering
Extra long lattice boom covers wide bridge spans for girder lifting.Stable heavy load performance for huge precast bridge components
3 Super High-rise Steel Construction
The lattice boom can be spliced together to achieve extremely extended lengths, perfectly fitting high-altitude hoisting operations for super high-rise building steel frameworks. It delivers steady, powerful heavy-lifting torque, enabling smooth lifting of bulky steel columns and massive steel girders. Its hollow truss structure greatly reduces wind resistance, which significantly enhances operational safety during high-place work and windy outdoor conditions.
4 Other application scenarios that require heavy-duty cranes
The lattice boom crawler crane boasts far greater load capacity than telescopic crawler cranes, ideal for lifting heavy engineering components.
What Is a Telescopic Crawler Crane?
Structure
Telescopic crawler cranes are defined by their hydraulic telescopic box boom. This boom consists of multiple nested closed rectangular box sections. This crane holds a fixed maximum reach and cannot add extra segments to expand its span; standard main boom lengths run roughly 30 to 60 meters.
Every core movement of the machine relies entirely on hydraulics: boom extension, luffing, travelling and slewing are all hydraulic-powered.
The machine features full 360-degree rotation and a compact operator cabin with clear sightlines, making it perfect for tight job sites and short-distance lifting tasks.
Most available models fall into small and medium tonnage classes from 20 to 130 tons. These cranes are built for light-to-medium lifting jobs with short project timelines.
Advantages
Hydraulic telescopic booms eliminate complicated disassembly and assembly work entirely. This advantage drastically cuts down on on-site working hours and manual labor expenses, while noticeably boosting overall construction progress and operational efficiency on every job site.
These cranes also feature much lower relocation and transportation costs. Most small and medium tonnage telescopic crawler crane units can be fully shipped using just one flatbed truck. There is no need to dispatch several separate vehicles to haul individual boom sections, counterweights and track assemblies separately, which greatly slashes trailer delivery fees as well as the labor charges spent on repeated dismounting and reassembling components.
Moreover, telescopic crawler cranes deliver outstanding site adaptability and perform exceptionally well in cramped, narrow spaces and all kinds of complicated construction environments. The machine takes up minimal ground space during lifting operations, and a single unit is capable of handling a wide range of different auxiliary hoisting tasks to meet diverse project lifting demands.
Typical Applications
1. Wind Farm Auxiliary Lifting
No boom assembly required for instant operation. It supports pick-and-carry movement for tower tailing and part transport. Compact body travels smoothly on narrow mountain tracks and muddy wind farm ground.
2. Urban & Indoor Confined Job Sites
No outriggers needed, requiring little surrounding space. Fully retractable boom fits low-height indoor & tunnel spaces. Small turning radius allows flexible operation in crowded old towns.
3. Narrow confined construction areas
Compact design adapts to pits, substations and pipeline trenches. Off-road crawlers perform stably on soft muddy ground. Telescopic boom adjusts lengths quickly for multi-point small component lifting, saving site transfer time.