Liebherr MK 140-5.1
Built: 2025 · Series: MK
More machines from model year 2025
Not the right version? The data comes from vehicle registers holding many near-identical versions side by side. Photograph the data plate — we read make and type from it. Open the scanner e-mail address required
Liebherr MK – the collective page of road-legal mobile construction cranes outside named types, from the MK 63 to the MK 140 Plus, six-cylinders from 6.7 to 12.8 litres, operating weights up to 65.9 t
This page gathers the Liebherr MK mobile construction cranes the register could not assign to a narrower range. Liebherr builds the MK range – mobile cranes with their own road drive and road registration, distinguished from the classic truck crane by the lattice-boom system and the short erection time on site – at the Swabian Ehingen plant, the group's centre for wheeled and crawler cranes. The number after MK gives the maximum lifting capacity in tonnes, from the MK 63 at around 63 t to the MK 140 at around 140 t; the suffix Plus and version numbers such as 5.1 mark further development with greater reach or capacity.
Read on 3 more paragraphs
The register lists here 10 versions with six-cylinders of 6,690 to 12,816 cm³, operating weights from 35,750 to 65,900 kg, gross weights from 36,000 to 66,000 kg, lengths from 13,760 to 15,970 mm and widths from 2,750 to 3,000 mm.
The mobile construction crane closes the gap between the pure site crane and the classic truck crane: it drives on its own axles to the site without heavy transport, and erects itself there in a short time into a tower-crane-like machine with great hook height – a field in which Liebherr is market leader.
On used MK cranes, the operating hours of chassis and crane superstructure, the condition of the lattice boom and guying, hydraulic cylinders and rope winches, the registration history of the chassis and the crane inspection history count; parts and service run through the Liebherr plant in Ehingen.
Sources: SpecCodex register, model data: Liebherr MK, Liebherr (manufacturer)
Technical data
Engine
| Power | 400 kWcorrect |
|---|---|
| Cylinders | 6correct |
| Displacement | 11,946 cm³correct |
Dimensions and weights
| Length | 15,970 mmcorrect |
|---|---|
| Width | 3,000 mmcorrect |
| Unladen weight | 65,900 kgcorrect |
| Gross vehicle weight | 66,000 kgcorrect |
Drivetrain and chassis
| Gears | 12correct |
|---|
Where this model stands
Power-to-weight ratio: 6.1 kW/t (400 kW / 65.9 t)
Stronger than 88% of the mobile & rough terrain cranes in the register — out of 723 models with a stated power figure.
Calculated from the documented figures above — not a rating.
Frequently asked questions
How much power does the Liebherr MK 140-5.1 have?
The Liebherr MK 140-5.1 delivers 400 kW.
How much does the Liebherr MK 140-5.1 weigh?
The unladen weight is 65,900 kg.
What is the gross vehicle weight of the Liebherr MK 140-5.1?
66,000 kg.
What engine does the Liebherr MK 140-5.1 have?
6 cylinders, 11,946 cm³ displacement.
What are the dimensions of the Liebherr MK 140-5.1?
15,970 mm × 3,000 mm.
When was the Liebherr MK 140-5.1 built?
Production years: 2025.
What to check before buying
- Check the hour meter against the service records — a replaced instrument is the most common gap.
- Compare the data plate and chassis number with the papers.
- Check the weights in the papers against the figures here — attachments change them.
- Ask about parts availability for this build year — the running costs hang on it.
A general list for this type of machine — no substitute for an inspection or an appraiser.
We do not sell machines. We ask the dealers who carry this model and come back with price and lead time.
Request a quote →
We ask the suppliers and come back with price and lead time.
Request spare parts →
This page carries 10 individual figures for this model. They come from 2 recorded sources; every figure can be traced there. What we cannot document is not here — we leave gaps open rather than estimate them.
The technical data on this page comes from official vehicle registration records (RDW/Traficom), not from the manufacturer.
Missing a figure you were looking for? Report it →
Know this machine better? Have a photo, a manual, or know that a figure is wrong? Add it to the register →
Other models in this series
Sources: Traficom — Finnish vehicle register (retrieved August 2026) · lectura-specs.com (retrieved August 2026) · How we check the data
Mobile crane in 3D section
Turn the model, look inside and click an assembly — each one is explained.
