Liebherr 81K.1 Self-Erect Tower Crane
The Liebherr 81K.1 is an upgraded version of the popular 81K model, offering enhanced features and improved performance. With a reach of up to 45 meters and a maximum capacity of 6 tons in the Load-Plus configuration, it provides excellent lifting capabilities for a wide range of construction projects. The crane can operate in three distinct configurations: the standard LM-1 mode, the enhanced Load-Plus mode for higher capacity, or the 30° elevated jib configuration for reaching over obstacles.
Transport & Mobility
The Liebherr 81K.1 is designed for exceptional mobility and rapid deployment across job sites:
- Compact transport dimensions of 14.3m (L) × 2.55m (W) × 4.0m (H)
- Single-vehicle transport configuration with integrated axle system
- Road-legal transport without special permits (in most regions)
- Integrated ballast system with automatic deployment sequence
- Air and hydraulic braking systems for secure transportation
- Multiple support base options: 4.5m × 4.5m to 6.0m × 6.0m
Setup & Operation
The 81K.1 features Liebherr's advanced self-erection system for minimal crew requirements:
- Fully automated erection sequence controlled via remote
- 20-minute setup time from transport to operational configuration
- Single-phase erection with integrated hydraulic systems
- MICROMOVE precision positioning system with millimeter accuracy
- Adaptive load detection with automatic adjustment of operational parameters
- Electronic wind monitoring system with automatic safety protocols
Safety & Technology Features
The Liebherr 81K.1 incorporates advanced safety systems and innovative technologies to enhance operational efficiency and protect personnel.
Safety Systems
- •ABB Anti-Collision System: Prevents crane-to-crane and crane-to-obstacle collisions with automated avoidance protocols
- •Load Moment Limitation: Real-time monitoring with automatic shutdown if maximum capacity is approached
- •Electronic Wind Monitoring: Continuous measurement with automated safety protocols for high-wind conditions
- •Emergency Lowering System: Battery-backed hydraulic system for load lowering during power outages
Power Management
- •ECOmode: Intelligent power management system that reduces energy consumption by up to 30%
- •Frequency-Controlled Drives: All motions use FU drives for precise control and reduced power consumption
- •Regenerative Braking: Energy recovery during braking operations for improved efficiency
Smart Control Systems
- •LiDAT Telematics: Remote monitoring of operational data, maintenance status, and location information
- •MICROMOVE: Ultra-precise positioning system allowing millimeter-level load placement
- •Smart Load Control: Automatic load sway dampening for improved handling in challenging conditions
- •Remote Diagnostic: Cloud-based troubleshooting and performance optimization
Operator Comfort & Control
- •Ergonomic Remote Control: Lightweight, intuitive interface with haptic feedback
- •Customizable Control Profiles: Operator-specific settings with automatic recognition
- •RC Vision System: Optional camera integration for improved visual feedback in challenging environments
Liebherr's commitment to safety and innovation is reflected in every aspect of the 81K.1 design, providing operators with advanced tools to maximize productivity while maintaining the highest safety standards in the industry.
Tower Height Options
The Liebherr 81K.1 offers multiple tower configurations to suit diverse project requirements:
Standard Configuration
- Hook height: 26.0m
- Tower sections: 1
- Setup time: 20 minutes
- Base spread: 4.5m × 4.5m
Extended Tower
- Hook height: 40.4m
- Tower sections: 2
- Setup time: 35 minutes
- Base spread: 4.5m × 4.5m
Climbing Configuration
- Hook height: Up to 55.0m
- Tower sections: Multiple
- Setup time: 60+ minutes
- Base spread: 6.0m × 6.0m
Technical Note
All tower configurations include Liebherr's LITRONIC electronic monitoring system, which provides real-time load moment calculations, anti-collision protection, and integrated wind speed monitoring. The system automatically adjusts operational parameters based on the specific configuration, ensuring optimal performance and safety regardless of setup.
Liebherr 81K.1 Self-Erecting Crane
Self-Erecting Tower Crane
Crane Specifications
Max Capacity
6 tons
Max Radius
45 m
Max Hook Height
40.4 m
Jib Length
45 m
Setup Time
~20 minutes
Power
400V, 32A
Load Capacity Chart
Crane in Action
Watch the Liebherr 81K.1 self-erecting tower crane in operation, demonstrating its versatility and capabilities on the construction site.
Key Features
- Enhanced lifting capacity compared to the 81K model
- Rapid assembly and disassembly in approximately 20 minutes
- 45m jib length with maximum capacity of 6 tons in Load-Plus configuration
- Flexible configuration options with standard LM-1 and Load-Plus modes
- Variable jib configurations including 30° angled mode
- Improved control systems for better precision
- Load-Plus feature for increased lifting capacities
Applications
The Liebherr 81K.1 self-erecting crane is ideal for a wide range of construction projects including:
Residential
Single and multi-family homes, townhouses
Commercial
Small to medium office buildings, retail spaces
Infrastructure
Bridge construction, small civil works
Industrial
Small to medium warehouse construction, facilities
Configuration Comparison
| Feature | LM-1 | Load-Plus | 30° Jib |
|---|---|---|---|
| Maximum Capacity | 4.5 tons | 6.0 tons | 4.0 tons |
| Maximum Hook Height | 26.0 m | 40.4 m | 38.0 m |
| Capacity at Max Radius (45m) | 550 kg | 750 kg | 500 kg |
| Best Use Case | Standard configuration for most construction projects | Projects requiring higher lifting capacity | Height-critical applications and working over obstacles |
LM-1 Configuration Detailed Data
| Reach (m) | Load Capacity (m/kg) | 12.0m | 15.0m | 18.0m | 21.0m | 23.0m | 25.0m | 27.0m | 29.0m | 31.0m | 33.0m | 35.0m | 37.0m | 40.0m | 42.0m | 45.0m | 48.0m |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 48.0 | 3.0 – 12.0 6000 | 6000 | 4620 | 3730 | 3110 | 2790 | 2530 | 2300 | 2110 | 1940 | 1800 | 1670 | 1550 | 1410 | 1320 | 1100 | |
| 45.0 | 3.0 – 13.3 6000 | 6000 | 5220 | 4230 | 3540 | 3180 | 2890 | 2640 | 2420 | 2230 | 2070 | 1920 | 1800 | 1630 | 1530 | 1400 | |
| 42.0 | 3.0 – 14.1 6000 | 6000 | 5570 | 4520 | 3790 | 3410 | 3090 | 2820 | 2590 | 2400 | 2220 | 2070 | 1930 | 1750 | 1650 | ||
| 37.0 | 3.0 – 15.1 6000 | 6000 | 6000 | 4930 | 4150 | 3740 | 3400 | 3110 | 2870 | 2650 | 2460 | 2300 | 2150 | ||||
| 31.0 | 3.0 – 16.3 6000 | 6000 | 6000 | 5370 | 4520 | 4080 | 3710 | 3400 | 3130 | 2900 |
Values in bold represent maximum capacity at the specified radius. All values are shown in kilograms (kg).
Load-Plus Configuration Detailed Data
| Reach (m) | Load Capacity (m/kg) | 12.0m | 15.0m | 18.0m | 21.0m | 23.0m | 25.0m | 27.0m | 29.0m | 31.0m | 33.0m | 35.0m | 37.0m | 40.0m | 42.0m | 45.0m | 48.0m |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 48.0 | 3.0 – 12.0 6000 | 6000 | 4830 | 4030 | 3440 | 3120 | 2860 | 2630 | 2430 | 2260 | 2110 | 1970 | 1850 | 1690 | 1590 | 1460 | 1350 |
| 45.0 | 3.0 – 13.3 6000 | 6000 | 5360 | 4500 | 3870 | 3530 | 3240 | 2990 | 2770 | 2580 | 2410 | 2260 | 2130 | 1950 | 1840 | 1700 | |
| 42.0 | 3.0 – 14.1 6000 | 6000 | 5640 | 4710 | 4030 | 3670 | 3370 | 3100 | 2870 | 2670 | 2500 | 2340 | 2200 | 2010 | 1900 | ||
| 37.0 | 3.0 – 15.1 6000 | 6000 | 6000 | 5040 | 4310 | 3930 | 3600 | 3320 | 3070 | 2860 | 2670 | 2500 | 2350 | ||||
| 31.0 | 3.0 – 16.3 6000 | 6000 | 6000 | 5470 | 4720 | 4320 | 3980 | 3690 | 3430 | 3200 |
Values in bold represent maximum capacity at the specified radius. All values are shown in kilograms (kg).
30° Elevated Jib Configuration Detailed Data
| Reach (m) | Load Capacity (m/kg) | 12.0m | 14.0m | 16.0m | 18.0m | 20.0m | 22.0m | 25.0m | 26.5m | 28.0m | 30.0m | 31.7m | 33.0m | 35.0m | 36.0m | 37.0m | 38.6m |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 45.0 | 3.0 – 15.8 3000 | 3000 | 3000 | 2970 | 2730 | 2520 | 2340 | 2100 | 2000 | 1900 | 1790 | 1700 | 1640 | 1550 | 1500 | 1460 | 1400 |
| 42.0 | 3.0 – 17.7 3000 | 3000 | 3000 | 3000 | 2960 | 2740 | 2540 | 2290 | 2180 | 2080 | 1960 | 1860 | 1790 | 1700 | 1650 | ||
| 37.0 | 3.0 – 21.2 3000 | 3000 | 3000 | 3000 | 3000 | 3000 | 2910 | 2630 | 2510 | 2400 | 2260 | 2150 | |||||
| 31.0 | 3.0 – 25.3 3000 | 3000 | 3000 | 3000 | 3000 | 3000 | 3000 | 3000 | 2900 |
Values in bold represent maximum capacity at the specified radius. All values are shown in kilograms (kg).
Crane Driving Units
The Liebherr 81K.1 features state-of-the-art driving units with frequency-controlled motors for smooth operation and precise control.
Motion & Power
| Motion Type | Speed / Range | Power |
|---|---|---|
Slewing | 0 → 0.8 U/min | 5.0 kW FU |
Trolley Travel | 0 → 60.0 m/min | 3.0 kW FU |
Crane Travel | 0 → 25.0 m/min | 2 × 2.2 kW FU |
Jib Angle Adjustment (0°–45°) | 110 sec | 3.0 kW FU |
Hoist Motor & Speed Performance
Motor Type: 15.0 kW FU
| Step | Capacity | Speed |
|---|---|---|
| Step 1 | 6000 kg | 0 → 12.7 m/min |
| Step 2 | 400 kg | 0 → 76.1 m/min |
Performance Curve
BGL
C.0.03.0080
Power Supply
- Voltage: 380 V – 480 V
- Frequency: 50 Hz / 60 Hz
- Power: 22.0 kVA (FU)
Load-Plus = Abweichende Geschwindigkeiten und Betriebsbedingungen.
Different speeds and service conditions.
Documentation
Download the official Liebherr 81K.1 specifications and technical data sheet below. This document includes essential information for planning, operation, and maintenance.
Liebherr 81K.1 Technical Specifications
Official technical data, dimensions, load charts, and operating parameters for the Liebherr 81K.1 self-erecting tower crane.
File size: 5.1 MB
About This Data
The load charts shown here represent the lifting capacities of the Liebherr 81K.1 self-erecting crane in three configurations: the standard LM-1, Load-Plus, and 30° elevated jib. These values are based on manufacturer specifications and may vary depending on specific conditions such as wind speed, ground conditions, and precise configuration.
For detailed specifications, operational guidelines, and exact lifting capacities for your specific project needs, please consult the official Liebherr 81K.1 documentation or contact an authorized Liebherr representative.