Grove GMK4090
Series: Grove All Terrain Crane
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
Grove AT865, AT1100: the number after AT marks the tonnage class
On Grove all-terrain cranes, AT stands for "All Terrain", and the number that follows roughly indicates the capacity class in US tons. Factory data puts the AT865's maximum lift capacity at 130,000 lb, just under 59 tonnes, while the AT1100 reaches 220,000 lb, roughly 100 tonnes — the model number sits noticeably above the actual maximum load because it marks the broad market class rather than the exact figure from the load chart.
Read on 3 more paragraphs
The "Grove All Terrain Crane" bucket spans smaller classics like the AT400, mid-range models such as the AT422E, AT635E and AT745, up to the large AT865, AT880 and AT1100. Letter suffixes such as E or S generally mark updated variants within a given tonnage class, though the available sources do not support a single, consistent meaning for these letters across every class.
The register's 57 active models span an operating weight of 10,500 to 91,327 kg, engine power from 110 to 447 kW, 6- to 10-cylinder engines, and displacement from 5701 to 16,000 cm³ — a wide technical spread between compact site cranes and heavy-lift machines.
Buying used, what matters most on all-terrain cranes is the condition of the telescopic boom and its slide pads, along with the load-test history. Checking the supplied load chart shows whether the real capacity at a given boom angle still matches the factory figures.
Sources: SpecCodex register, model data: Grove All Terrain Crane, RitchieSpecs: Grove AT865 All Terrain Crane, RitchieSpecs: Grove AT1100 All Terrain Crane
Technical data
Engine
| Power | 435.2 hp (320.1 kW)correct |
|---|---|
| Rated speed | 1,700 rpmcorrect |
| Torque | 2,100 Nmcorrect |
| Speed at max. torque | 1,300 rpmcorrect |
| Cylinders | 6correct |
| Displacement | 10,677 cm³correct |
Dimensions and weights
| Length | 12,700 mmcorrect |
|---|---|
| Width | 2,750 mmcorrect |
| Wheelbase | 5,750 mmcorrect |
| Ground clearance | 435.9 mmcorrect |
| Unladen weight | 40,015 kgcorrect |
| Gross vehicle weight | 48,000 kgcorrect |
Drivetrain and chassis
| Gearbox type | Mercedes G 280correct |
|---|---|
| Forward gears | 16correct |
| Reverse gears | 2correct |
| Wheels | 8correct |
| Tyre size | 385/95 R25correct |
| Top speed | 85 km/hcorrect |
Other data
| System voltage | 24 Vcorrect |
|---|
Where this model stands
Power-to-weight ratio: 8 kW/t (320 kW / 40 t)
Stronger than 71% 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 Grove GMK4090 have?
The Grove GMK4090 delivers 435 hp.
How much does the Grove GMK4090 weigh?
The unladen weight is 40,015 kg.
What is the gross vehicle weight of the Grove GMK4090?
48,000 kg.
What engine does the Grove GMK4090 have?
6 cylinders, 10,677 cm³ displacement.
How fast does the Grove GMK4090 go?
Top speed is 85 km/h.
What are the dimensions of the Grove GMK4090?
12,700 mm × 2,750 mm.
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.
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This page carries 22 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.
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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: RDW — Dutch national vehicle register (retrieved August 2026) · RitchieSpecs equipment specifications (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.
