The size classes aren't arbitrary — capability jumps at specific points, and the jumps aren't evenly spaced.
Understanding where they are keeps you from buying a class too small and living with it for a decade.
Quick Comparison
| 1 Ton | 2 Ton | 3 Ton | |
|---|---|---|---|
| Operating weight | ~2,000–2,600 lb | ~4,400–5,000 lb | ~6,600–7,700 lb |
| Dig depth | ~5–6 ft | ~7–8 ft | ~8–10 ft |
| Width | Narrowest — gate access | Moderate | Wider |
| Transport | Half-ton truck | 3/4-ton | 3/4-ton, check payload |
| Cab option | Rare | Sometimes | Usually available |
| Attachment range | Limited | Good | Full |
| Used market | Thin | Moderate | Deepest |
| Best for | Tight access, homeowner | Landscaping, small utility | General contracting |
1-Ton: The Access Machine
What it's for: getting where nothing else can. Backyards through narrow gates, interior demolition, between buildings, inside structures.
The strength is width. Many 1-ton machines fit through a standard residential gate, and some fit through doorways with tracks retracted. That's a capability no larger machine has, and for the work where it matters, nothing substitutes.
The limits are real. Roughly 5–6 feet of dig depth doesn't reach frost depth in a lot of northern climates. Lift capacity is modest. Attachment options are limited by both hydraulics and weight.
Buy it if access is your binding constraint and your digging is shallow. Don't buy it expecting general-purpose capability.
2-Ton: The Middle
What it's for: landscaping, irrigation, drainage, small utility work, and residential jobs where you need more than a 1-ton but still care about access.
Roughly 7–8 feet of dig depth covers a lot of residential work — most drainage, irrigation, and shallow utility.
The jump from 1-ton is substantial. Meaningfully more depth, real lift capacity, and a full attachment range become viable.
Still transports easily behind a 3/4-ton.
Buy it if you need genuine capability but work residential sites where a 3-ton is awkward.
3-Ton: The Sweet Spot
The class where most of the market lands, and for good reasons.
Roughly 8–10 feet of dig depth covers most residential and light commercial work — footings at frost depth in most climates, utility burial, septic laterals, drainage.
Full attachment ecosystem. Breakers, augers, thumbs, compaction wheels — all readily available and properly matched.
Cab options are common, which matters for year-round work.
The deepest used market in the category. Kubota U27, Bobcat E35, Cat 302.5 CR and their peers sell in volume, which means more choice buying and better resale selling.
Still trailerable behind a 3/4-ton — though check payload carefully, because a 3-ton plus attachments plus trailer is a real load and tongue weight frequently binds before tow rating does.
Buy it if your work is general and you're unsure. It's the default for a reason.
Where the Jumps Actually Happen
1 to 2 ton: the biggest capability jump per ton. Depth roughly doubles, lift capacity increases substantially, and attachments become viable. If you're deciding between these two and access allows the 2-ton, take it.
2 to 3 ton: moderate capability, meaningful transport change. You gain depth and capacity, and you start pushing what a 3/4-ton hauls comfortably.
3 to 5 ton: another real jump in depth — into the 11–12 foot range — but transport gets harder. One-ton truck territory, frequently gooseneck.
Access vs. Depth: The Real Trade
These two constraints pull opposite directions, and most buyers have to choose.
Measure your narrowest regular access first. Gates, side yards, between structures. That sets your ceiling.
Then get your required dig depth from your building department or system designer. That sets your floor.
If the floor is above the ceiling, you have a problem — and the answer is either a machine with a retractable undercarriage, or accepting that some jobs need a different machine.
Retractable undercarriages narrow for access and extend for stability. Worth looking for if you're caught between.
Beyond 3-Ton
4–5 ton: roughly 11–12 feet. Septic, deeper utility, foundation work. Transport moves to one-ton and gooseneck.
6–8 ton: roughly 14–15 feet. Commercial and production work. Generally beyond pickup transport.
Which to Buy
Start with your constraints, not your ambitions.
- Narrowest access — sets the maximum size
- Required dig depth — sets the minimum size
- Transport capability — what you can actually move
- Lift requirement — if you set pipe or structures
If those four narrow to a single class, that's your answer. If they conflict, the access constraint usually wins on residential work and the depth constraint wins on utility work.
FAQ
What's the most versatile size?
3-ton. Best balance of depth, access, transport, attachments, and used-market depth.
Can a 1-ton do real work?
Real work in tight places, yes. General-purpose excavation, no — the depth limit is the issue.
Should I buy bigger than I need?
Depth you don't have is a hard limit. So is access you can't fit through. On residential work, access binds more often.
What about jumping to 5-ton?
Meaningful depth gain, but transport changes substantially. Make sure you can move it before you buy it.
Do I need a cab?
If you work year-round in a hard climate, yes. Canopy saves real money and gives better visibility otherwise.
Which class holds value best?
3-ton, reflecting the depth of demand.
Can one machine cover everything?
Rarely. Operations doing both tight residential and deep utility work frequently run two, or rent the size they don't own.