One of the most common scenarios we see at the rental counter involves a homeowner walking in, looking at our line of yellow iron, and scratching their head. You know you need to dig, but looking at everything from a tiny “micro” excavator to a 6-ton earthmover can be overwhelming.
Choosing the wrong size isn’t just an inconvenience—it’s a safety hazard and a budget killer. Get a machine that’s too small, and you risk tipping it over or burning out the hydraulics. Get one that’s too big, and you might crush your driveway or find you can’t even fit through the backyard gate.
Here is my guide to picking the “Goldilocks” machine—the one that is just right for your project.
1. Know Your Specs: The “Big Three” Measurements
Before you rent, you need to know exactly what the job requires. In the equipment world, we look at three main specifications.
- Dig Depth: How deep do you need to go? If you are burying a water line at 2 feet, a micro excavator is fine. If you are digging a septic system or a basement egress, you need a machine that can reach 8-10 feet down safely.
- Maximum Reach: How far away from the machine do you need to dump the dirt? If you are loading a dump truck or piling dirt far from the trench to prevent cave-ins, you need a machine with a longer arm.
- Dump Height: Are you just piling dirt on the ground, or are you lifting it over the side of a trailer? Ensure the excavator’s boom can lift high enough to clear the side of your hauling vehicle.
2. Assess Your Job Site Access
This is the number one mistake DIYers make. You rent a powerful 5-ton excavator, tow it home, and realize your fence gate is only 40 inches wide.
- The “Squeeze” Factor: Measure the narrowest point of entry to your work area.
- Micro Excavators often have retractable tracks that can squeeze through standard doorways (down to roughly 28-30 inches).
- Mini Excavators usually need 5 to 6 feet of width.
- Tail Swing: The “tail swing” is how far the back of the cab rotates. If you are working right next to your house or a fence, look for a Zero Tail Swing These machines are designed so the house of the excavator doesn’t stick out beyond the tracks as it rotates, preventing you from accidentally smashing into your siding.
3. Match the Machine to the Job
Here is a quick cheat sheet we use at ARA Rental to help customers decide:
| Project Type | Recommended Size | Why? |
| Planting trees, small trenches (irrigation) | 1-2 Ton (Micro) | Lightweight, won’t tear up the lawn, fits through gates. |
| Utility lines, french drains, small stumps | 3-3.5 Ton (Mini) | The “Swiss Army Knife.” Good power, decent depth, still towable by many trucks. |
| Septic install, pool excavation, large demolition | 5-6+ Ton (Compact/Mid) | High breakout force needed for hard soil and deep digging. |
4. Don’t Forget the Ground Conditions
Lawton soil varies. If you are working on finished turf or a driveway, you want an excavator with rubber tracks. Almost all our rental mini-excavators come with rubber tracks specifically to minimize damage to paved surfaces and lawns. Steel tracks are great for jagged rocks, but they will chew up a driveway in seconds.
5. Consider the Attachments
An excavator is only as good as what’s attached to the arm.
- Buckets: Do you need a wide bucket for grading/cleanup or a narrow bucket for trenching?
- Augers: Drilling holes for fence posts? An auger attachment saves hours of manual labor.
- Breakers: Need to demo an old concrete patio? A hydraulic breaker turns your excavator into a giant jackhammer.
Still Unsure? Ask the Experts.
There is no shame in asking for help—in fact, we prefer it! At ARA Rental, we want you to be safe and efficient. If you can tell us how deep you are digging, what you are digging (clay, rock, sand), and how wide your gate is, we can point you to the exact machine you need.
Stop by our yard in Lawton, and let’s get your project started on the right track.
Skip to content