Ordering the wrong track size is a costly mistake — you're stuck with unusable inventory and your machine stays down while you wait for the correct replacement. This guide covers everything you need to know about measuring rubber tracks accurately.
The Three Critical Measurements
Rubber track sizing uses three numbers: width, pitch, and link count. You'll see this expressed as something like "450x86x56" — that's 450mm width, 86mm pitch, and 56 links. All three must match your machine's requirements.
Measuring Track Width
Track width is the overall width of the rubber track measured from outer edge to outer edge. Use a tape measure across the track at any point — the measurement should be consistent along the entire length. Common widths range from 180mm on micro excavators up to 500mm+ on larger CTLs.
Width is typically the first number in any track size designation. A 450x86x56 track is 450mm (approximately 17.7 inches) wide.
Measuring Pitch
Pitch is the distance between the centers of adjacent drive lugs — the internal "teeth" that engage with your machine's sprocket. This is the most critical measurement for proper fit.
To measure pitch: locate two adjacent drive lugs on the inside of the track. Measure from the center of one lug to the center of the next. Common pitch measurements include 52.5mm, 72mm, 72.5mm, 84mm, 86mm, and 96mm.
Incorrect pitch means the track won't engage with your sprocket properly. This causes slippage, accelerated wear, and potential track derailment.
Counting Links
Links refers to the total number of drive lugs around the entire track. The easiest way to count is to mark a starting point with chalk or tape, then count each lug as you rotate the track. Common link counts range from 32-40 on small machines up to 55-60+ on larger CTLs.
Link count determines track circumference. Too few links and the track won't tension properly. Too many and it won't fit within the undercarriage adjustment range.
Guide Pattern Identification
Beyond the basic dimensions, you need to match the guide pattern — the configuration of internal guides that keep the track aligned on the undercarriage. Common patterns include:
W-Guide (Wide): Two guides with wide spacing, typically on excavators.
N-Guide (Narrow): Two guides with narrow spacing, common on CTLs.
T-Guide (Offset): Asymmetric guide placement.
B-Guide (Block/Solid): Solid center guide running the track length.
When You Can't Measure
If your existing tracks are destroyed or unavailable for measurement, you can determine track size by machine model and serial number. TrackTECH maintains a comprehensive fitment database — contact our team with your equipment details and we'll identify the correct track specifications.
Get Expert Fitment Help
Still unsure about your measurements? Our fitment specialists verify every order before shipping. Send us your model number, serial number, and photos of your existing tracks — we'll confirm the correct replacement before anything ships.
Step 1: Measure Track Width
Lay the track flat on the ground or measure across the full width of a mounted track from outside edge to outside edge. Width is measured in millimeters — common widths are 180mm, 230mm, 300mm, 320mm, 400mm, and 450mm. The width is the first number in your track size (e.g., 450x86x58).
Step 2: Measure Track Pitch
Pitch is the center-to-center distance between adjacent link holes, measured in millimeters. To measure accurately, count out 10 links and measure the total distance, then divide by 10. Common pitches are 72mm, 86mm, 52.5mm, and 101.6mm. Pitch is the second number (e.g., 450x86x58).
Step 3: Count the Links
Count every link hole around the entire track loop. This is your link count — the third number in your track size. Common counts range from 37 to 96 depending on machine size. For example, 450x86x58 has 58 links.
Where to Find Your Track Size
Your track size is typically stamped on the inner surface of the track, near the guide lugs. Look for a series of numbers like "450x86x58" or "450-86-58." If the stamp is worn, use our Rubber Track Finder to look up your machine model directly.
Understanding Guide Type
Guide type is separate from track size and refers to the shape of the inner guide lugs. You must match guide type to your undercarriage. Common types include Block (B), Offset N/K, Wide (W), Takeuchi (T), and ASV (AV/AV2). Read our guide type explainer for full details.