Head to head
Pramac GRW22Y/S5 vs Thwaites 6 Tonne Power Swivel
The Pramac GRW22Y/S5 is a stage v rental generator set, 18.3 kva prime power. The Thwaites 6 Tonne Power Swivel is a 6 tonne power swivel site dumper.
Last reviewed 13 September 2026
Specifications side by side
| Pramac GRW22Y/S5 | Thwaites 6 Tonne Power Swivel | |
|---|---|---|
| Engine | YANMAR | Deutz TCD 3.6 L4 |
| Emergency standby power ESP | 19.3 kVA | - |
| Prime power PRP | 18.3 kVA | - |
| Voltage | 400/230 (V) | - |
| Emission stage | Stage V | - |
| Payload | - | 6000 kg |
| Heaped capacity | - | 3150 litres |
| Engine power | - | 55.4 kW (74 hp) @ 2200rpm |
Sources: Pramac GRW22Y/S5, Thwaites 6 Tonne Power Swivel. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the GRW22Y/S5 if...
Rental-series generator set for hire fleets, events, construction sites and city centre works needing temporary three-phase power.
Full GRW22Y/S5 specifications →Buy or hire the 6 Tonne Power Swivel if...
A 6 tonne dumper whose skip swivels so it can tip to either side, useful for loading into trenches and working along narrow roads or site edges. Used by groundworks and utility contractors on UK sites. A cab is listed as an option.
Full 6 Tonne Power Swivel specifications →Common questions
What is the difference between the Pramac GRW22Y/S5 and the Thwaites 6 Tonne Power Swivel?
The Pramac GRW22Y/S5 is a stage V rental generator set, 18.3 kVA prime power; the Thwaites 6 Tonne Power Swivel is a 6 tonne power swivel site dumper.
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