Case CX31

Series: Case Mini Excavator

Source: https://www.lectura-specs.com/en/model/construction-machiner

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The Case Mini Excavator series from Case includes the CX31. The engine delivers 16.9 kW, has 4 cylinders, with a displacement of 1,329 cm³. Torque is 79.5 Nm. Rated speed is 2,300 rpm. The unladen weight is 3,000.1 kg. Ground clearance is 320 mm. The tank holds 37.9 litres. Maximum torque is reached at 1,400 rpm. The pump delivers 62.8 l/min. The hydraulic tank holds 48.1 litres. Working pressure is 225.9 bar. The cooling system holds 2.6 litres. The oil fill is 3.8 litres. The electrical system runs on 12 V. The engine fitted is the 3TNE82A. The Case Mini Excavator series covers 28 models. Rated output within it ranges from 8.9 to 65.6 kW; the CX31 sits at the bottom of that range with 16.9 kW. Its immediate neighbours are the CX27B ZTS below it with 15.9 kW and the CX20B above it with 17.2 kW. 620 Case models across 22 series are on record. The model is listed under Excavators & compaction. 17 verified figures from 1 source are on file.

Technical data

Engine

Engine model	3TNE82Acorrect
Power	16.9 kWcorrect
Rated speed	2,300 rpmcorrect
Torque	79.5correct
Speed at max. torque	1,400 rpmcorrect
Cylinders	4correct
Displacement	1,329 cm³correct
Coolant capacity	2.6 lcorrect
Engine oil capacity	3.8 lcorrect

Dimensions and weights

Ground clearance	320correct
Unladen weight	3,000.1 kgcorrect

Drivetrain and chassis

System voltage	12 Vcorrect

Working data

Pump flow	62.8 l/mincorrect
Hydraulic oil capacity	48.1 lcorrect
Hydraulic pressure	225.9 barcorrect
Fuel tank capacity	37.9 lcorrect

Other data

Height	2,511.6correct

Where this model stands

Power-to-weight ratio: 5.6 kW/t (17 kW / 3 t)

Stronger than 41% 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 Case CX31 have?

The Case CX31 delivers 16.9 kW.

How much does the Case CX31 weigh?

The unladen weight is 3,000 kg.

What engine does the Case CX31 have?

4 cylinders, 1,329 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.
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 17 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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Case CX31

Technical data

Engine

Dimensions and weights

Drivetrain and chassis

Working data

Other data

Where this model stands

Frequently asked questions

What to check before buying

Other models in this series

CX135SR

CX14

CX15B Series 2

CX17B

CX17C

CX18B Series 2

CX20B

CX20B ZTS

CX22B

CX22B ZTS

CX25

CX26C

Mini excavator in 3D section