Dynapac CA121PD – specifications
Series: Dynapac Vibratory Compactor
Build year not documented · Data origin: Directory data · sources
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As a Compaction equipment, the Dynapac CA121PD belongs to the Dynapac Vibratory Compactor series. Engine output is 53 kW.
At 6 km/h, that is as fast as it goes. Empty, it weighs 4,500 kg.
Within the range, rated power spans from 53 to 194 kW; with 53 kW, the CA121PD sits at the bottom end. The next one up is the CA150P with 60 kW.
Dynapac single-drum rollers CA121 to CA702 – from Karlskrona: the CA range since the CA25 of the 1970s, D for smooth, PD for padfoot drum, Cummins engines, 53 to 194 kW
Dynapac of Karlskrona in southern Sweden is, with Bomag and Hamm, one of the world's three big roller makers and has belonged since 2017 to the French Fayat group, after ten years under Atlas Copco. The single-drum rollers have carried the CA code since the 1970s – the CA 25 of 1974 is regarded as the roller that made the hydrostatically driven soil compactor the standard. The numbers of today's models order series and size: CA121 to CA152 the mid-range, CA250 to CA362 the 10 to 13 tonne class for road and embankment work, CA500 to CA702 the heavy rollers for rock and large earthworks, the final digit the upgrade level. The letters name the drum: D for the smooth drum, PD for the padfoot drum for cohesive soils, P on older models likewise for padfoot; the CT3000 is a combination machine.
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The register lists 22 versions with 53 to 193.9 kW – Cummins QSB 4.5 and QSB 6.7 in most models, B4.5T and BT 6A 5.9 in the older ones, Deutz in a few – at 2,200 to 2,800 rpm and operating weights from 4,500 to 27,050 kg.
Dynapac's hallmark is compaction measurement: the Compaction Meter the company introduced in 1978 measures soil stiffness through drum vibration and shows the operator where more compaction is needed – the basis of today's continuous compaction control.
On used rollers, operating hours, the condition of vibration bearings and rubber buffers, leak-free travel and vibration hydraulics, play in the articulation joint, pad wear on padfoot rollers and Cummins parts supply, which is unproblematic worldwide, are what count.
Sources: SpecCodex register, model data: Dynapac Walzenzüge, Dynapac (Fayat Group, Hersteller)
Technical data
Engine
| Engine model | e 3029 TFcorrect |
|---|---|
| Power | 53 kWcorrect |
Dimensions and weights
| Unladen weight | 4,500 kgcorrect |
|---|
Drivetrain and chassis
| Top speed | 6.1 km/hcorrect |
|---|
Where this model stands
Power-to-weight ratio: 11.8 kW/t (53 kW / 4.5 t)
Stronger than 12% of the compaction equipment in the register — out of 219 models with a stated power figure.
Calculated from the documented figures above — not a rating.
Frequently asked questions
How much power does the Dynapac CA121PD have?
The Dynapac CA121PD delivers 53 kW.
How much does the Dynapac CA121PD weigh?
The unladen weight is 4,500 kg.
How fast does the Dynapac CA121PD go?
Top speed is 6.1 km/h.
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 4 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) · Data sources and cross-checks
Road roller in 3D section
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