Excavator dimensions are the machine’s own measurements when it is parked and folded up: how wide it is across the tracks, how tall it stands, how long it is nose to tail, and how far the back end sticks out when the machine turns. Across the 294 excavators listed on DesiMachines, published widths run from 980 mm (0.98 m) on a micro machine to 3,820 mm (3.82 m) on a 49 tonne class machine, and standing heights from 2,339 mm to 4,000 mm, as per the current August 2026 spec sheets.

These numbers decide whether the machine can get to your work at all. A gate, a village lane, a compound wall or a low tree line will stop a machine that is otherwise perfect for the job. This guide gives width, height, length, tail swing and ground clearance for every size class, explains what tail swing means, and gives you a short list to measure on site before you order.

How wide is an excavator?

An excavator’s width is measured across the outside of the two tracks, and it is the number that decides whether the machine fits through your gate. A mini excavator is 980 to 2,005 mm (about 1.0 to 2.0 m, or 3 to 6.5 feet) wide. The common 20 tonne machine most contractors buy is 2,550 to 3,190 mm (2.55 to 3.19 m, about 8.4 to 10.5 feet) wide.

The narrowest machine listed is the Bobcat E20z at 980 mm. That is under a metre, narrow enough to pass through an ordinary house doorway, which is exactly why machines this size are used for drainage work inside built-up colonies. At the other end, the SANY SY60C at 2,005 mm is twice as wide while still counting as a mini.

Several small machines have a variable-width undercarriage. The tracks slide inward for travel and outward for digging, so one machine gives you both a narrow travelling width and a wide, stable digging stance. On such machines the spec sheet lists two figures, for example 990 mm retracted and 1,300 mm extended. Read the smaller one when you are checking a gate and the larger one when you are checking stability.

Width is the measurement first-time buyers get wrong most often, because people measure the gate and forget the approach. A machine 2.8 m wide needs more than 2.8 m of clear gali to turn into that gate, not exactly 2.8 m.

How tall is an excavator?

Standing height is measured to the top of the cab or to the top of the boom when it is folded down for travel, whichever is higher. Mini excavators stand 2,339 to 2,680 mm (2.3 to 2.7 m) tall. A 20 tonne machine stands 2,920 to 3,550 mm (2.9 to 3.6 m), and the large 25 to 50 tonne machines reach 3,050 to 4,000 mm.

Notice how little height changes across the whole range. The smallest machine we list stands 2.34 m and a 45 tonne machine stands 4.0 m, so height less than doubles while weight goes up more than twenty times. A canopy version, which has a roll-over frame instead of a full glazed cab, is shorter again than the cab version of the same machine, so ask which one you are being quoted if you have a hard height limit. The same flattening shows up in how high the machine can lift its bucket: excavator dumping height rises by only about half a metre between the 15 to 25 tonne class and the 25 to 50 tonne class.

Height matters in three places in India. Overhead electric lines are the first and the most dangerous, and a machine that clears them parked will not clear them with the boom up. The second is basement and go-down entries, where the concrete beam over the door is a hard limit. The third is transport: once the machine sits on a trailer bed roughly a metre off the road, a 3.2 m machine becomes a 4.2 m load, and that is where low bridges and flyover clearances come in. What the machine measures parked and what it measures loaded are two different numbers.

How long is an excavator?

Overall length is measured with the boom and arm folded into the travel position, from the front of the bucket to the back of the counterweight. Mini machines are 3,515 to 5,925 mm long. A 20 tonne machine is 9,395 to 10,360 mm, so roughly 9.5 to 10.5 metres, and large machines run 9,950 to 12,140 mm.

Length surprises people because a 20 tonne excavator is often described as a compact machine, and 10 metres is not compact when you are reversing it into a lane. The folded boom accounts for most of it. On long reach machines, which carry an extended boom and arm for canal and river work, published lengths reach 18,600 mm. Those are a separate class and are listed separately for that reason.

Length also sets the trailer you need. Which trailer suits which machine, and what moving it costs, are covered in the guides on trailer types for excavator transport and excavator transport cost.

Excavator dimensions by size class

The table sets out the published span for every size class we list, taken from the machines’ own specification sheets and current as of August 2026. The span is the full range across all machines in that class, smallest to largest.

Size class Machines listed Width Height Length Tail swing radius
Mini, 0 to 6 Ton 49 980 to 2,005 mm 2,339 to 2,680 mm 3,515 to 5,925 mm 620 to 1,640 mm
Small, 6 to 15 Ton 46 1,740 to 2,590 mm 2,500 to 3,140 mm 4,970 to 7,870 mm 1,750 to 2,400 mm
Medium, 15 to 25 Ton 76 2,550 to 3,190 mm 2,920 to 3,550 mm 9,395 to 10,360 mm 2,720 to 3,105 mm
Large, 25 to 50 Ton 46 2,990 to 3,820 mm 3,050 to 4,000 mm 9,950 to 12,140 mm 2,820 to 3,800 mm

Two things are worth reading off this table. Width climbs far slower than weight. A 20 tonne machine is roughly twice as wide as a 3 tonne mini while weighing about six times as much, because every machine in between still has to travel on the same roads. Length, on the other hand, jumps sharply between the small and medium classes, from under 8 m to over 9 m, because the boom gets much longer while the body stays a similar shape.

The extra-large mining machines above 50 tonnes are left out of the table on purpose. They run to 10,670 mm wide and 23,910 mm long, they travel dismantled, and their figures stretch the ranges without telling a road or building contractor anything useful. If the size brackets themselves are new to you, the excavator size classes guide explains what each one is used for, and excavator operating weight covers the weight side.

Four published figures have been left out of the table because they do not agree with the machines around them, and we have flagged each one for checking rather than let it set a class boundary. The JCB 520X LC is listed under the 15 to 25 tonne category but publishes an operating weight of 52,000 kg, which places it three classes higher. A 3.3 tonne mini publishes a standing height of 1,510 mm when every comparable machine, including smaller ones, stands above 2,300 mm. A 3.5 tonne machine whose model code marks it as a zero tail swing version publishes a tail swing radius of 2,425 mm, which is larger than machines twice its size. And two 50 tonne machines sit in the 25 to 50 tonne bracket. Where a figure looks wrong we would rather say so than publish it.

What is tail swing on an excavator?

Tail swing is how far the back of the excavator’s upper body sticks out past the tracks when the machine rotates. The upper body, cab, engine and counterweight turn as one piece on a bearing, so the counterweight sweeps a circle every time the operator swings the boom. The tail swing radius is the size of that circle measured from the centre of rotation, and it runs from 620 mm on a micro machine to 3,800 mm on a large one.

This is the dimension that damages walls. The operator is watching the bucket at the front, the counterweight is moving the opposite way behind them, and a wall that was clear when the machine was digging straight ahead is not clear once the machine swings 90 degrees to load a tipper. In a trench beside a compound wall, tail swing decides how close to that wall you can work.

You can work out the clearance you need from the figures. Subtract half the machine’s width from the tail swing radius, and that is roughly how far the tail hangs past the track edge. On a 20 tonne machine with a 2,800 mm tail swing radius and a 2,990 mm width, the tail sweeps about 1.3 m past the track on each side.

Which excavators have zero tail swing?

Machines built so the counterweight stays inside or nearly inside the track width are called zero tail swing or reduced tail swing machines, and they are mostly minis. On the models we list, the tail swing radius drops to between 620 mm and 775 mm while the machine is 990 to 1,550 mm wide, so the tail barely passes the tracks at all.

Manufacturers signal it in the model name. A U, Z, AZ or SR in the model code usually means a reduced or zero tail swing version. Examples from the machines we list:

Model Tail swing radius Machine width
Kubota U17-3 620 mm 990 / 1,240 mm
XCMG XE20U 620 mm 990 / 1,240 mm
Tata Hitachi TMX 20 Neo 675 mm 1,400 mm
SANY SY27U 775 mm 1,550 mm
Tata Hitachi ZAXIS 33U 775 mm 1,550 mm

For work in a lane, beside a live road, or inside an existing building, a reduced tail swing machine is worth paying for. The operator stops having to think about what is behind them and can concentrate on the digging, which makes the job faster as well as safer. The trade-off is that the counterweight has to be heavier and closer in to balance the same load, so these machines sometimes lift a little less than a standard machine of the same weight. Compare the full range of mini excavators to see which versions are offered.

How much ground clearance does an excavator have?

Ground clearance is the gap between the lowest point of the undercarriage frame and the ground. It runs from 145 mm on the smallest minis to 648 mm on large machines, with a 20 tonne machine sitting at 430 to 486 mm.

Low clearance is what gets a machine stuck. In soft paddy soil, on a rutted approach road, or over a bund, the tracks keep turning while the belly of the machine rests on the ground and takes the weight off them. A mini with 145 mm of clearance will belly out on ground a 20 tonne machine walks over without noticing.

Clearance works together with ground pressure, which is how heavily the machine presses on soft ground, and with the track width. The excavator ground pressure guide covers that side, and the undercarriage guide explains the frame and track parts these figures describe.

How to check your site before the machine arrives

Take a measuring tape and walk the route the machine will take, from the road to the spot where it will work. Five measurements settle almost every problem:

  • The narrowest point of the approach, not just the gate. Lane corners, gate pillars and parked vehicles are usually tighter than the gate itself.
  • The lowest overhead obstruction along that route: electric lines, a gate arch, tree branches, a building projection.
  • The turning space inside the site, which needs to allow for the machine’s length plus room to swing.
  • The clearance behind the working position, checked against the tail swing radius rather than the machine width.
  • The condition of the approach, especially soft patches, kachcha ramps and any culvert the trailer has to cross.

Write the five figures down and give them to the dealer before you finalise the machine. A dealer who knows your gate is 2.6 m wide will steer you to a machine that fits, and that conversation costs nothing. Doing it afterwards means either a smaller machine than you paid for or breaking a wall.

One more habit worth building: check the dimensions on the specific variant you are buying, not the model family. A canopy version, a wider track shoe option or a different counterweight all change these numbers, and the guide to reading an excavator spec sheet shows where to find them.

Where dimensions fit in the buying decision

Dimensions rarely decide which excavator a contractor wants. They regularly decide which one they can actually use. The sequence that works is to pick the size class from the work and the digging depth you need, then check that class against your site access, and only then compare models on price and dealer support.

If the access rules out the class you wanted, you have three options rather than one. A reduced tail swing machine in the same weight gives you the same digging with less swing clearance. A smaller machine with a longer arm can sometimes reach the same depth. Or the access itself can be opened up, which is often cheaper than dropping a size class for the life of the machine. Buyers comparing across machine types will find the same exercise for backhoes in the backhoe loader dimensions guide, and the types of excavators guide covers the wheeled and long reach options.

The U in a model name is the tail-swing marker on minis, and the rest of the naming code is decoded in the guide to excavator model numbers.

Ready to shortlist? Browse the full range of excavators with specifications for every model, or start with the excavator guides if you are still deciding on a size.

Prices, specifications and features are indicative, vary by variant, location and date, and should always be confirmed with the official OEM or authorised dealer before any purchase decision. DesiMachines is not liable for decisions taken on the basis of information that may have changed after publication.