Kubota U45

Series: Kubota Midi Excavator

The Kubota U45 belongs to the Kubota Midi Excavator series. The engine delivers 31.3 kW, has 4 cylinders, with a displacement of 2,202.4 cm³. Rated speed is 2,250 rpm. The unladen weight is 5,375.1 kg. Ground clearance is 320 mm. The tank holds 70 litres. The pump delivers 121.5 l/min. The hydraulic tank holds 43.9 litres. The cooling system holds 8.7 litres. The oil fill is 8.7 litres. The engine fitted is the V2203-M. The Kubota Midi Excavator series covers 3 models. Rated output within it ranges from 31.3 to 47.9 kW; the U45 sits at the bottom of that range with 31.3 kW. Its immediate neighbours are the KX161-3 above it with 35 kW. 1026 Kubota models across 33 series are on record. The model is listed under Excavators & compaction. 13 verified figures from 1 source are on file.

Technical data

Engine

Engine modelV2203-Mcorrect
Power31.3 kWcorrect
Rated speed2,250 rpmcorrect
Cylinders4correct
Displacement2,202.4 cm³correct
Aspirationliquid-cooled, overhead valve diesel enginecorrect
Coolant capacity8.7 lcorrect
Engine oil capacity8.7 lcorrect

Dimensions and weights

Ground clearance320correct
Unladen weight5,375.1 kgcorrect

Working data

Pump flow121.5 l/mincorrect
Hydraulic oil capacity43.9 lcorrect
Fuel tank capacity70 lcorrect

Where this model stands

Power-to-weight ratio: 5.8 kW/t (31 kW / 5.4 t)

Stronger than 5% of the excavators & compaction in the register — out of 1,666 models with a stated power figure.

Calculated from the documented figures above — not a rating.

Frequently asked questions

How much power does the Kubota U45 have?

The Kubota U45 delivers 31.3 kW.

How much does the Kubota U45 weigh?

The unladen weight is 5,375 kg.

What engine does the Kubota U45 have?

4 cylinders, 2,202 cm³ displacement.

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.
  • Load the hydraulics and watch for sag.
  • 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.

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This page carries 13 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

Sources: [1]

Excavator in 3D section

Turn the model, look inside and click an assembly — each one is explained.

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