23/04/2026
How to Measure Rubber Tracks: Width, Pitch and Links Explained
Three measurements are all it takes to size a replacement rubber track: width, pitch and the number of links. Here's how to take them and read the size.
How to Measure Rubber Tracks: Width, Pitch and Links Explained
SizingExcavators, CTLs & skid steers5 min read
Ordering the wrong size rubber track is an expensive mistake, and with so many mini excavators, compact track loaders and skid steers on the market, there are a lot of sizes to choose from. The good news: you only need three measurements to identify a replacement track.
Key takeaways
- Sizes are written as width x pitch x number of links, for example 300 x 52.5 x 84.
- Width and pitch are given in millimeters. 1 inch = 25.4 mm.
- Always match the track you're taking off, including any letter in the size.
How rubber track sizes are written
Rubber track sizes are written as width x pitch x number of links. Bobcat, for example, lists the rubber track for its E35 mini excavator as 300 x 52.5 x 84:
| Figure | What it means |
|---|---|
| 300 | Track width in millimeters (Bobcat describes this as a 12-inch track) |
| 52.5 | Pitch in millimeters |
| 84 | Number of links |
Most listings, including Bobcat's and ours, give sizes in millimeters. You can see the same size on our Bobcat E35 rubber track (300 x 52.5 x 84N). Caterpillar's track selection guide has you measure in inches, so convert carefully if you measure with an imperial tape.
Step 1: Measure the width
Measure straight across the track, from one outside edge to the other.
Step 2: Measure the pitch
Pitch is the distance between the links or lugs, measured center to center. Caterpillar's compact track loader selection guide puts it the same way: "the distance between the links or lugs, center-to-center."
Pro tip
Pitch values are precise (52.5 or 54.5 mm, for example), and a few millimeters makes the difference between sizes. Measure center to center across several links and divide by the number of gaps. For example, 5 gaps measuring 262.5 mm gives a 52.5 mm pitch.
Step 3: Count the links
Count the number of links or lugs around the full length of the track. Mark your starting link with chalk or paint so you don't lose count.
Put the three numbers together and you have your size. In the diagrams above, the example track is 230 x 96 x 31: 230 mm wide, 96 mm pitch, 31 links.
Check the old track first
Before you measure, check your old track for a size or part number that is still readable. Caterpillar notes that if your older track doesn't show a part number, you can still find a replacement by measuring. Not sure the old track is worn out yet? See how to check rubber track wear.
Match it exactly
Some machines take more than one size, so always check the size against the track you're taking off, not just the machine model. On our product listings, a letter in the size, such as W or N, denotes the tread or guide type. Match the letter as well as the three numbers.
OEM track width examples
| Machine | Width (mm) | Width (in) |
|---|---|---|
| Bobcat E35 | 300 (300 x 52.5 x 84) | 11.81 (sold by Bobcat as a 12-inch track) |
| Bobcat E42 | 350 (350 x 54.5 x 88) | 13.78 (sold by Bobcat as a 14-inch track) |
| Kubota KX040-4 | 350 | 13.8 |
| Cat 305 CR | 400 | 15.7 |
As published by Bobcat, Kubota and Caterpillar. Inch sizes are often rounded, so order by the millimeter size and confirm it against your own track.
Rubber track width: mm to inches
| Width (mm) | Width (in) |
|---|---|
| 180 | 7.09 |
| 230 | 9.06 |
| 250 | 9.84 |
| 300 | 11.81 |
| 320 | 12.60 |
| 350 | 13.78 |
| 400 | 15.75 |
| 450 | 17.72 |
FAQ
What do the three numbers in a rubber track size mean?+
Width in millimeters, pitch in millimeters, and number of links. For example, 300 x 52.5 x 84 is a 300 mm wide track with a 52.5 mm pitch and 84 links.
What is rubber track pitch?+
The distance between the links or lugs, measured center to center.
Are rubber track sizes in inches or millimeters?+
Sizes are normally written in millimeters. If you measure in inches, multiply by 25.4 to convert to millimeters.
Can I use a different size track on my machine?+
Some machines are offered with more than one track width, but don't guess. Match the size of the track you're replacing, or check your machine's spec sheet or dealer. Weighing up a switch to steel? Read rubber tracks vs. steel tracks.
Changing tracks? Check your sprockets for wear at the same time, and read our tips to make rubber tracks last longer.
Related guides
Got your size?
Every rubber track we stock carries its size in the product title. Search by make and model, or by the size on the track you're taking off. Shipped across the USA.
Find your rubber trackTalk to the teamManufacturer names and model numbers are used for identification only. Excavator Parts Direct is an independent supplier of aftermarket parts and is not affiliated with any manufacturer named.
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