Mini Excavator Tonnage Classes Explained: 0.7 t to 8 t
What "1.8 tonne" or "3.2 tonne" really means, why operating weight matters more than anything else on the spec sheet, and where each Rippa class fits.
When people say "a 1.8 tonne excavator" they mean the machine's operating weight: the excavator with a full tank, standard bucket and an average operator on board. It is the single most useful number on a spec sheet, because almost everything else follows from it.
Why weight matters
An excavator digs by pushing the bucket into the ground and prying. The machine's own mass is what stops it lifting itself out of the hole instead. More weight means:
- More breakout force. A 2 tonne machine will cut into compacted gravel and thin limestone that stalls a 1 tonne machine.
- More stability when lifting over the side or working on a slope.
- A bigger, deeper reach, because the boom and dipper can be longer without tipping the machine.
The trade-offs are just as predictable: more weight to tow, wider tracks that may not fit down a side path, and more ground damage on lawns and paving.
The classes in the Rippa range
| Class | Rippa model | Operating weight | Typical use |
|---|---|---|---|
| 0.7 t "micro" | R06 | 747 kg | Indoor renovation, doorways, tight courtyards |
| 1 t | R10 | 978 kg | Landscaping, reticulation, tight side access |
| 1.2 t | R13 PRO | 1,165 kg | Narrow blocks, vineyard rows, garden beds |
| 1.5 t | R15 | 1,460 kg | The all-round suburban machine |
| 1.8 t | R18 PRO | 1,818 kg | Footings, pools, retaining walls |
| 2 t | R22 PRO | 1,950 kg | Acreage, drainage, harder ground |
| 3.2 t | R32 PRO | about 3,200 kg | Contractors, farms, full days in a cab |
| 5.7 t | R57 PRO | 5,700 kg | Dams, site cuts, civil work |
| 8.2 t | R82 PRO | 8,200 kg | Road, drainage and commercial earthmoving |
Micro (under 1 tonne)
The R06 exists for one reason: it fits through a 780 mm opening. Renovators, plumbers and landscapers use it inside buildings and in courtyards nothing else can reach. Its 1 m dig depth is enough for footings and services in sand, but it is not a machine for hard ground.
1 to 1.5 tonne
This is the sweet spot for suburban Perth. The R10, R13 PRO and R15 all use adjustable tracks that narrow to under 1 m for access and widen again for stability. They tow behind a dual-cab ute on a standard plant trailer and dig 1.8 m, enough for soakwells, footings and most retaining walls.
1.8 to 2 tonne
The R18 PRO and R22 PRO are where breakout force starts to feel serious. Dig depth passes 2.3 m, hydraulic flow supports breakers and augers properly, and the weight lets you work Perth Hills gravel and coastal limestone rather than bounce off it. They are still towable with the right trailer and tow vehicle.
3 tonne and above
From the R32 PRO up you are in contractor territory: enclosed cabs, zero tail swing, and enough capacity to do a day's work in one setup. Transport moves to a heavy trailer or tilt tray, and the machines pay for themselves on volume.
Choosing between neighbouring classes
If you are torn between two classes, the rule of thumb is to buy the heavier one only if your access and transport allow it. Most owners regret a machine that is too small on hard ground far more than one that is slightly harder to tow. Use the comparison table to see the numbers side by side, or run the machine finder.