Mobile tower crane
Liebherr MK 73-3.1
The Liebherr MK 73-3.1 is a 6 tonne, three axle mobile tower crane with a 38.5m jib, supplied with an operator for crane hire or as part of a contract lift.
Spec sheet
Download the Liebherr MK 73-3.1 spec sheet
Liebherr MK 73-3.1
Download the manufacturer’s specification sheet (PDF · 28 pages · 2.6MB).
Key figures
Liebherr MK 73-3.1 key figures
- Maximum capacity
- 6 tonnes
- Jib length
- 38.5m
- Load at jib tip
- 1.45 tonnes at 38.5mUp to 2 tonnes with additional ballast and LoadPlus
- Axle lines
- 3
Specification
Liebherr MK 73-3.1 specification
| Item | Specification |
|---|---|
| Manufacturer | Liebherr |
| Model | MK 73-3.1 |
| Type | Mobile tower crane |
| Maximum capacity | 6 tonnes, at up to 11.5m radius with standard ballast (13.5m with full ballast and LoadPlus) |
| Jib length | Three-section jib, 38.5m radius with the jib horizontal; 37.1m at 15 degrees, 33.3m at 30 degrees, 27.4m at 45 degrees |
| Load at jib tip | 1.45 tonnes at 38.5m on the 7.00m x 6.61m support base with 4.3t standard ballast (280 degree slewing range); 1.85 tonnes with 7.2t total ballast; 2 tonnes with 7.2t and the optional LoadPlus |
| Jib positions | 0, 15, 30 and 45 degrees, adjustable in operating condition by radio remote control or from the elevating cabin; optional TrolleyPlus for the 15 and 45 degree positions |
| Tower | Telescopic lattice tower, locked to the slewing platform; elevating cabin |
| Counterweight | 4.3 tonnes basic; 7.2 tonnes in total with the optional BallastPlus additional ballast (1.8t and 1.1t) |
| Weight and axle loads | 12 tonnes per axle, 36 tonnes in total on the road with 4.3t ballast; up to 13.5 tonnes per axle, 39.5 tonnes in total in jobsite driving with 7.2t (remove additional ballast for road transport) |
| Outriggers | 4-point, hydraulically telescoping horizontally and vertically, automatic levelling, electronic inclination indicator; support bases 7.00m x 6.61m and 5.75m x 6.61m; maximum supporting force 300kN |
| Axle lines | 3, all steered; axles 2 and 3 driven with differential locks |
| Tyres and width | 6 tyres, 385/95 R25 |
| Engine | Cummins 6-cylinder diesel, 243kW (326hp), 1,375Nm |
| Crane drive | Electric, 40 kVA generator in the carrier or site power (63 A / 400 V, optional 32 A / 400 V); frequency-converter hoist and trolley gear |
| Transmission | ZF 12-speed with automatic control, two-stage transfer case with lockable transfer differential |
| Control and safety | PLC control, configuration monitoring, working range limiting, anemometer, electronic monitor system with angle monitor and support pressure indicator, radio remote control, MICROMOVE precision positioning |
Specifications are taken from the manufacturer published specification sheet for this model and are given as a guide only. Machines vary by build, options and configuration, and figures can change without notice. Nothing on this page forms part of a contract or a lift plan: the crane, its configuration and its load chart are confirmed when we quote and plan your lift.
Compare
Liebherr MK 73-3.1 compared with similar cranes
| This craneLiebherr MK 73-3.1 | Spierings SK477-AT4 | Spierings SK487-AT3 | Spierings SK597-AT4 | |
|---|---|---|---|---|
| Maximum capacity | 6 tonnes | 7 tonnes | 7 tonnes | 7 tonnes |
| Jib length | 38.5m | 38m | 40m | 48m |
| Load at jib tip | 1.45 tonnes at 38.5m | Not stated | 1.7 tonnes at 40m | 1.7 tonnes at 48m |
| Axle lines | 3 | Not stated | 3 | 4 |
Related
Find out more
Get a quote
Ready for a quote?
Send us the details and we will come back with a quote, usually the same day for a desktop survey.
Or call 0800 008 6096
