Head to head
Bobcat E55z vs Yanmar ViO57-6B
The Yanmar ViO57-6B has 299kW more power and is the bigger machine by 214kg.
Last reviewed 13 September 2026
Key differences
- Engine power: the Yanmar ViO57-6B has 299kW more power.
- Operating weight: the Yanmar ViO57-6B is the bigger machine by 214kg.
Specifications side by side
| Bobcat E55z | Yanmar ViO57-6B | |
|---|---|---|
| Operating weight | 5271kg | 5485 kg |
| Engine power | 36.4kW | 33,5 kW (at 2200 rpm) |
| Breakout force | 30.99kN | 41,9 kN |
| Dig depth | 3434mm | - |
| Fuel tank | - | 66 l |
Sources: Bobcat E55z, Yanmar ViO57-6B. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the E55z if...
A midi excavator for groundworks, utilities and landscaping contractors. At 5.3 tonnes it arrives on a lorry rather than behind a car. It digs to 3434mm. Zero tail swing means the back of the machine stays inside the tracks when it slews, so it can work tight against a wall or in one lane of a road.
Listed by
Buy or hire the ViO57-6B if...
- you want one that has 299kW more power
- you want one that is the bigger machine by 214kg
A 5 to 6 tonne zero-tail swing digger for civils and groundworks contractors on deeper trenching, pipe laying and loading. Hire fleets use it where space is tight but a bigger machine is needed.
Full ViO57-6B specifications →Common questions
What is the difference between the Bobcat E55z and the Yanmar ViO57-6B?
The Yanmar ViO57-6B has 299kW more power and is the bigger machine by 214kg. The Bobcat E55z is a midi excavator, zero tail swing, 3 to 6 tonnes; the Yanmar ViO57-6B is a 5.5 tonne zero-tail mini excavator.
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