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Liebherr 125 EC-B 6 Tower Crane

The Liebherr 125 EC-B 6 is a versatile flat-top tower crane designed for urban construction projects where multiple cranes need to operate in close proximity. With its compact design and impressive lifting capabilities, it's an ideal solution for residential, commercial, and infrastructure projects.

Liebherr 125 EC-B 6 Tower Crane

Maximum Capacity

6,000 kg

At minimum working radius of 15.0m

Maximum Jib Length

58.5 meters

With capacity of 1,350 kg at max radius

Hook Height

Up to 71.5 m

Varies based on tower configuration

Crane Overview

The Liebherr 125 EC-B 6 belongs to the EC-B "economic" flat-top crane series, featuring a compact design that eliminates the need for a tower head. This design allows multiple cranes to slew above each other in tight construction sites, making it ideal for urban environments.

With a maximum lifting capacity of 6,000 kg and a maximum jib length of 58.5 meters, the 125 EC-B 6 provides excellent coverage and lifting power for mid-sized construction projects. The jib can be configured in 2.5m sections, allowing for flexible adaptation to site requirements.

The micromove fine positioning mode and intelligent assistance systems help operators perform precise lifts, while the modern cabin design ensures comfort during extended operations. The crane features Liebherr's proven drive technology with frequency converters for smooth handling and reduced power consumption.

Technical Specifications

SpecificationValueNotes
Max Lifting Capacity6,000 kgAt 15.0m radius
Max Jib Length58.5 mConfigurable in 2.5m sections
Max Hook Height71.5 mWith standard tower system
Tip Load Capacity1,350 kgAt maximum radius
Tower System120 HCCompatible with 120 HC tower system
Power Supply400V / 50HzThree-phase current
Hoisting Speed0 - 100 m/minDependent on load weight
Slewing Speed0 - 0.8 rpmInfinitely variable

Key Features

Flat-Top Design

Compact design without tower head allows multiple cranes to operate safely in close proximity, ideal for cramped urban construction sites.

Fast Assembly

Optimized connection technology and Connect-and-Work quick connections enable rapid assembly and disassembly, reducing setup time.

Micromove Function

Fine positioning mode allows for high-precision placement of loads with millimeter accuracy for delicate installation tasks.

Tower System Flexibility

Compatible with the 120 HC tower system, providing various height configurations to adapt to different project requirements.

Economic Design

Part of Liebherr's EC-B series focused on economic efficiency with optimized transport dimensions and reduced power consumption.

Advanced Control System

Intelligent assist systems including load moment limiter, anti-collision systems, and wind monitoring for enhanced operational safety.

Applications

Residential Construction

Ideal for multi-story apartment buildings, condominium developments, and housing complexes where space might be limited and lifting requirements are moderate.

Commercial Projects

Perfect for office buildings, shopping centers, and mixed-use developments requiring precise placement of structural elements and materials.

Urban Infrastructure

Suitable for bridges, transportation hubs, and public facilities in dense urban areas where multiple cranes may need to operate in close proximity.

Performance Data

The Liebherr 125 EC-B 6 offers exceptional performance with its variable frequency drive system. The hoisting gear provides smooth acceleration and precise control, while the jib design ensures stability even at maximum reach.

Load-Plus Configuration Capacity Chart

Load-Plus capacity chart for Liebherr 125 EC-B 6 showing capacities in tons at different heights and radiuses
Height (m)Radius (r)Parameter (t)20.0m22.5m25.0m27.5m30.0m32.5m35.0m37.5m40.0m42.5m45.0m47.5m50.0m52.5m55.0m58.0m
58.0r=59.665.474.844.323.903.543.242.972.742.542.372.212.061.931.821.711.60
55.0r=56.665.634.994.474.043.673.363.092.862.652.472.302.162.031.911.80-
52.5r=54.165.845.184.644.203.823.503.222.982.772.582.412.262.122.00--
50.0r=51.666.005.374.814.343.953.623.333.082.862.672.492.342.20---
47.5r=49.166.005.484.914.444.043.703.413.162.932.732.562.40-----
45.0r=46.666.005.675.084.594.183.833.533.273.032.832.65-----
42.5r=44.166.005.404.844.383.993.653.363.112.892.70-----
40.0r=41.666.005.595.014.534.133.783.483.223.00-----
37.5r=39.166.005.595.024.544.143.803.503.25---------------
35.0r=36.666.005.595.024.544.143.793.50----------------
32.5r=34.166.005.595.024.544.143.80------------------
30.0r=31.666.005.595.024.554.15-------------------
27.5r=29.166.005.595.024.55--------------------
25.0r=26.666.005.635.10--------------------
22.5r=24.166.005.70------------------
20.0r=21.666.00--------------------

Note: The Load-Plus table shows maximum lifting capacities (in tons) for the Liebherr 125 EC-B 6 at different heights and radiuses.

Bold values indicate the maximum lifting capacity at each configuration row. Missing values indicate configurations that are not available or not recommended for operation.

LM1 Configuration Capacity Chart

LM1 capacity chart for Liebherr 125 EC-B 6 showing capacities in tons at different heights and radiuses
Height (m)Radius (r)Parameter (t)20.0m22.5m25.0m27.5m30.0m32.5m35.0m37.5m40.0m42.5m45.0m47.5m50.0m52.5m55.0m58.0m
58.0r=59.664.994.393.913.523.192.902.662.452.272.101.961.821.711.601.501.40
55.0r=56.665.164.564.073.673.333.042.792.582.392.222.071.931.811.701.60-
52.5r=54.165.384.764.263.843.493.192.932.712.512.342.182.041.911.80--
50.0r=51.665.604.954.434.003.633.323.062.822.622.442.272.132.00---
47.5r=49.165.725.074.544.103.733.423.142.902.702.512.342.20-----
45.0r=46.665.935.264.714.263.883.553.273.022.812.622.45-----
42.5r=44.166.005.404.844.383.993.653.363.112.892.70-----
40.0r=41.666.005.595.014.534.133.783.483.223.00-----
37.5r=39.166.005.595.024.544.143.803.503.25-----------------
35.0r=36.666.005.595.024.544.143.793.50-------------------
32.5r=34.166.005.595.024.544.143.80--------------------
30.0r=31.666.005.595.024.554.15---------------------
27.5r=29.166.005.595.024.55-----------------------
25.0r=26.666.005.635.10-----------------------
22.5r=24.166.005.70-------------------
20.0r=21.666.00---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Note: The LM1 table shows maximum lifting capacities (in tons) for the Liebherr 125 EC-B 6 at different heights and radiuses.

Bold values indicate the maximum lifting capacity at each configuration row. Missing values indicate configurations that are not available or not recommended for operation.

Load Capacity at Various Radii

  • 15.0m radius:6,000 kg
  • 20.0m radius:4,500 kg
  • 30.0m radius:2,800 kg
  • 40.0m radius:2,050 kg
  • 50.0m radius:1,600 kg
  • 58.5m radius (max):1,350 kg

Technical Documentation

Download the official Liebherr 125 EC-B 6 specifications and load charts document for detailed technical information, setup configurations, and operational parameters:

PDF Document

Liebherr 125 EC-B 6 Specifications

Official technical data, dimensions, load charts, and operating parameters for the Liebherr 125 EC-B 6 tower crane.

File size: 2.1 MB

Download PDF

About This Information

The information provided on this page is based on manufacturer specifications and industry knowledge. For the most up-to-date and project-specific information, always consult the official Liebherr documentation and contact an authorized Liebherr dealer.

For operational guidelines, safety protocols, and detailed assembly instructions, refer to the official operator's manual provided by Liebherr.

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