Kubota KX040-4GTA
Series: Kubota Mini Excavator
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Kubota Mini Excavators: the U and KX Series Split on Tail Swing
Kubota splits its mini excavators into two families: the KX-series with conventional tail swing (the rear overhangs the tracks when the upper structure rotates) and the U-series with tight to zero tail swing (the rear stays within the track width). The "Kubota Mini Excavator" bucket holds 51 models spanning 5 to 46 kW, from the tiny K008-3 up to larger U- and KX-series machines.
Read on 3 more paragraphs
The U-series is built for working right against walls, fences or buildings, since the machine doesn't hit anything as it rotates — examples include the U15, U25, U27 and U35. The KX-series (e.g. KX41-3, KX91-3) trades that for the stability of conventional tail swing on open jobsites.
The digit after the hyphen marks the emissions generation: Kubota has revised its engine families several times, from E2 (Tier 2) through E3/E3B (Tier 3) to E4 (Tier 4 Final) and E5 (EU Stage V) — parts aren't necessarily interchangeable across generations.
When buying used, check the generation alongside cylinder count (3 or 4, depending on class) and the condition of the undercarriage and hydraulic cylinders — a common wear point especially on the compact K- and U-series machines.
Sources: Kennwerte der Modelle Kubota Mini Excavator, – U-Series | Kubota USA, – Meet the U17-5, – Kubota | Tier 4 Emissions – Clean Diesel Technology
Technical data
Engine
| Engine make | Kubotacorrect |
|---|---|
| Engine model | D1803-CR-TE4correct |
| Fuel | dieselcorrect |
| Power | 41 hp (29 kW)correct |
| Rated speed | 2,200 rpmcorrect |
| Cylinders | 3correct |
| Displacement | 1,825.5 cm³correct |
| Aspiration | turbochargedcorrect |
| Cooling | liquid-cooledcorrect |
Dimensions and weights
| Ground clearance | 332.2correct |
|---|---|
| Unladen weight | 4,090 kgcorrect |
Working data
| Pump flow | 24.6 l/mincorrect |
|---|---|
| Hydraulic oil capacity | 65.1 lcorrect |
| Fuel tank capacity | 64.4 lcorrect |
Other data
| Cab height | 2,487.2correct |
|---|
More machines with this engine (Kubota D1803-CR-TE4, 8)
Where this model stands
Power-to-weight ratio: 7.1 kW/t (29 kW / 4.1 t)
Stronger than 82% of the mini excavators in the register — out of 400 models with a stated power figure.
Calculated from the documented figures above — not a rating.
Frequently asked questions
How much power does the Kubota KX040-4GTA have?
The Kubota KX040-4GTA delivers 41 hp.
How much does the Kubota KX040-4GTA weigh?
The unladen weight is 4,090 kg.
What engine does the Kubota KX040-4GTA have?
3 cylinders, 1,826 cm³ displacement, Diesel.
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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We ask the suppliers and come back with price and lead time.
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This page carries 16 individual figures for this model. They come from 1 recorded source; every figure can be traced there. What we cannot document is not here — we leave gaps open rather than estimate them.
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Other models in this series
K008-3
KX018-4
KX018-4H
KX033-4G
KX033-4GA
KX033-4GAX
KX033-4GX
KX033-4HG
KX033-4HGA
KX033-4HGAX
KX033-4HGX
KX040-4
Sources: [1]
Mini excavator in 3D section
Turn the model, look inside and click an assembly — each one is explained.