Jonyang JY640
Series: Jonyang Hydraulic Excavator
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Jonyang hydraulic excavators – the Chinese excavators JY210E, JY230E and JY640 with Cummins engines from the United States, 126 to 235 kW, 19,050.9 to 36,287.4 kg operating weight
This page gathers the hydraulic excavators from Jonyang, the Chinese construction-equipment maker: the JY210E and JY230E as mid-weight excavators and the JY640 as a large excavator. Jonyang is one of the numerous Chinese excavator makers that pushed into the international market over the past two decades with engines from Western suppliers – here Cummins from the United States – and are positioned there below the established Japanese, South Korean and European brands on price.
Read on 3 more paragraphs
The register lists here 3 versions with 126 to 235 kW from Cummins engines of the 6A, 9-C and M11-C315 series, with operating weights from 19,050.9 to 36,287.4 kg.
Excavators of this power class are built for earthworks, pipeline and open-pit work, where Chinese makers such as Jonyang compete on lower purchase cost and Western-brand engines such as Cummins against the established makers from Japan, South Korea, the United States and Europe, above all in emerging markets and infrastructure construction.
On used examples, operating hours and the condition of the Cummins engine, undercarriage wear and track tension, the tightness of the hydraulic cylinders, and the condition of the boom, arm and bucket all matter; parts for the Cummins engines are available through the international Cummins service network, and for undercarriage and hydraulics through Jonyang importers.
Sources: SpecCodex register, model data: Jonyang Hydraulikbagger
Technical data
Engine
| Engine model | M11-C315correct |
|---|---|
| Power | 235 kWcorrect |
Dimensions and weights
| Ground clearance | 496.8 mmcorrect |
|---|---|
| Unladen weight | 36,287.4 kgcorrect |
Working data
| Pump flow | 720.4 l/mincorrect |
|---|---|
| Hydraulic pressure | 343 barcorrect |
Other data
| Cab height | 3,069.3 mmcorrect |
|---|
Where this model stands
Power-to-weight ratio: 6.5 kW/t (235 kW / 36.3 t)
Stronger than 87% of the excavators & compaction in the register — out of 1,650 models with a stated power figure.
Calculated from the documented figures above — not a rating.
Frequently asked questions
How much power does the Jonyang JY640 have?
The Jonyang JY640 delivers 235 kW.
How much does the Jonyang JY640 weigh?
The unladen weight is 36,287 kg.
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.
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 7 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: RitchieSpecs equipment specifications (retrieved August 2026) · How we check the data
Excavator in 3D section
Turn the model, look inside and click an assembly — each one is explained.
