Head to head
JCB 50Z-2 vs Kubota U17-3a
The JCB 50Z-2 has 25kW more power and is the bigger machine by 3,330kg.
Last reviewed 6 October 2026
Key differences
- Engine power: the JCB 50Z-2 has 25kW more power.
- Operating weight: the JCB 50Z-2 is the bigger machine by 3,330kg.
- Dig depth: the JCB 50Z-2 digs 1.19m (4ft) deeper.
Specifications side by side
| JCB 50Z-2 | Kubota U17-3a | |
|---|---|---|
| Operating weight | 5030 kg | 1,700kg |
| Engine power | 36 kW | 11.3kW |
| Dig depth | 3.65 m | 2,460mm |
| Dump height | 4.08 m | - |
Sources: JCB 50Z-2, Kubota U17-3a. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the 50Z-2 if...
- you want one that has 25kW more power
- you want one that is the bigger machine by 3,330kg
- you want one that digs 1.19m (4ft) deeper
A zero tailswing digger for utility trenching, house foundations and road edge work where the rear of the machine has to stay inside the track width. It is used on civils sites and hire fleets that want a 5 tonne class machine.
Full 50Z-2 specifications →Buy or hire the U17-3a if...
A step up from a micro excavator for landscaping and groundworks contractors who need more dig depth and breakout force while still fitting through a standard gate or gap. Common on garden and small drainage jobs.
Listed by
- McGovern Plant Hire - Hounslow, Cranford
- Compact Plant Sales - Farnham
- Beaver Tool Hire - Isleworth, Twickenham
- Standard Plant Hire - Keston
- HG Plant Sales - Maldon, Langford
Common questions
What is the difference between the JCB 50Z-2 and the Kubota U17-3a?
The JCB 50Z-2 has 25kW more power and is the bigger machine by 3,330kg. The JCB 50Z-2 is a 5 tonne zero tailswing mini excavator; the Kubota U17-3a is a 1.7 tonne mini excavator.
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