Mini excavators are grouped by operating weight. Each step up buys dig depth, breakout force, and attachment flow — and costs you width, trailer class, and rental rate. Size for the deepest, toughest cut, not the average task.
In This Guide
Mini Excavator Size Classes
Mini excavators (also called compact excavators) range from about 1 ton to 10 tons. They're grouped into rough size classes: micro (1-2 tons), small (2-4 tons), mid-size (4-6 tons), and large mini (6-10 tons). Each step up gives you more digging depth, more breakout force, and a wider range of attachments — but also more width, more weight, and higher rental cost. The key is matching the machine to the job, not just renting the biggest one available.
Micro Excavators (1-2 Tons)
Micro excavators are narrow enough to fit through garden gates, backyard fences, and standard doorways — some are under 28 inches wide. They're ideal for residential plumbing and sewer line repairs, small landscaping jobs, fence post holes, and working in tight spaces where a larger machine simply can't go. Dig depth is typically 5-7 feet. They can be towed with a half-ton pickup truck on a small utility trailer. The trade-off is limited power — they struggle with heavy clay, rock, or deep trenching.
Small Excavators (2-4 Tons)
This is the most popular rental size class. A 3.5-ton mini excavator offers a strong balance of power, reach, and maneuverability. Dig depths reach 9-11 feet, and they can handle most residential and light commercial digging — footings, utility trenches, drainage installation, stump removal, and small demolition. They fit in most backyards but need a proper equipment trailer and a truck with adequate towing capacity (typically a 3/4-ton or larger).
Mid-Size Excavators (4-6 Tons)
When the job requires digging 12-14 feet deep or breaking through tougher ground, mid-size minis step up to the task. They're common on commercial construction sites for foundation work, larger utility installations, and site prep. They accept a wider range of attachments including hydraulic breakers, compaction plates, and augers. They're too wide for most residential backyards and require a full-size equipment trailer for transport.
Large Mini Excavators (6-10 Tons)
At the top of the mini excavator range, these machines blur the line with standard excavators. Dig depths of 14-16+ feet, strong breakout force, and full-size cab comfort make them suitable for commercial site work, road construction, and large utility projects. They're still classified as "compact" and offer zero or minimal tail swing — useful on congested job sites where a full-size excavator's tail would be a hazard.
Choosing by the Job
Residential plumbing repair or small landscaping: 1-2 tons. Residential foundation, drainage, or fencing: 2-4 tons. Commercial utility trenching or footings: 4-6 tons. Commercial site prep or deep excavation: 6-10 tons. If your job involves multiple tasks at different scales, size for the most demanding task — it's cheaper to rent one appropriately sized machine than to rent two. Still not sure? Tell us what you're digging, how deep, and what the ground conditions are, and we'll recommend the right size.
FAQ
What mini excavator sizes do you typically rent?
Our current rental classes center on ~3.5-ton machines (Bobcat E35 class with a hydraulic thumb) and ~5.5-ton machines (Cat 305.5E2 class). Smaller micros and larger minis come and go with used inventory.
Is a 3.5-ton mini enough for house footings?
Often yes in typical Utah soils if the trench is not unusually deep. Rocky or cemented soils, or 12+ ft utility work, usually want the 5.5-ton class.
Do I need a thumb?
If you are placing rock, pulling roots, or handling debris, yes. Our E35 rental class is set up with a hydraulic thumb for that reason.
Machines on the lot
Live inventory rotates. These are current machines in the related rental collections — not a promise that a specific used unit is still here.
Need a quote on the right class?
Call or text — we'll match height, width, and capacity to the job instead of renting you a bigger machine than you need.