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Case CX31B ZTS

Series: Case Mini Excavator

Source: https://commons.wikimedia.org/wiki/File:CASE_CX31B_vorne.jpg

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The Case CX31B ZTS is a model in the Case Mini Excavator series. The engine delivers 22.4 kW, has 4 cylinders, with a displacement of 1,638.7 cm³. Torque is 98.4 Nm. Rated speed is 2,400 rpm. The unladen weight is 3,029.5 kg. Ground clearance is 332.2 mm. The tank holds 37.9 litres. Maximum torque is reached at 1,440 rpm. The pump delivers 97.3 l/min. The hydraulic tank holds 48.1 litres. Working pressure is 230 bar. The cooling system holds 4.5 litres. The oil fill is 6.8 litres. The electrical system runs on 12 V. The engine fitted is the 3TNV88-BPYB. The Case Mini Excavator series covers 28 models. Rated output within it ranges from 8.9 to 65.6 kW; the CX31B ZTS sits in the lower part of that range with 22.4 kW. Its immediate neighbours are the CX36B ZTS below it with 21.2 kW and the CX55B above it with 28 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 model3TNV88-BPYBcorrect
Power22.4 kWcorrect
Rated speed2,400 rpmcorrect
Torque98.4correct
Speed at max. torque1,440 rpmcorrect
Cylinders4correct
Displacement1,638.7 cm³correct
Coolant capacity4.5 lcorrect
Engine oil capacity6.8 lcorrect

Dimensions and weights

Ground clearance332.2correct
Unladen weight3,029.5 kgcorrect

Drivetrain and chassis

System voltage12 Vcorrect

Working data

Pump flow97.3 l/mincorrect
Hydraulic oil capacity48.1 lcorrect
Hydraulic pressure230 barcorrect
Fuel tank capacity37.9 lcorrect

Other data

Height2,566.4correct

Where this model stands

Power-to-weight ratio: 7.4 kW/t (22 kW / 3 t)

Stronger than 74% 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 CX31B ZTS have?

The Case CX31B ZTS delivers 22.4 kW.

How much does the Case CX31B ZTS weigh?

The unladen weight is 3,030 kg.

What engine does the Case CX31B ZTS have?

4 cylinders, 1,639 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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Other models in this series

CX135SR

CX14

CX15B Series 2

CX17B

CX17C

CX18B Series 2

CX20B

CX20B ZTS

CX22B

CX22B ZTS

CX25

CX26C

Sources: [1]

Mini excavator in 3D section

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

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