United Skid Tracks

Rubber Track Fitment Guide

Get the right rubber track the first time. Confirm Width × Pitch × Links so your new track matches what’s on your machine.

How to Read & Measure Track Size

1) Width (W)

Measure the overall track width edge-to-edge in millimeters.

Width (mm)

2) Pitch (P)

Distance from the center of one steel insert/drive lug to the center of the next, measured on the inside of the track.

Pitch (mm)

3) Links (L)

Count the total number of steel inserts/drive lugs inside the track—go all the way around.

Count all around = Links
Example size: 450 × 86 × 52
W
450 mm wide
P
86 mm pitch
L
52 links

UST Tip: Many tracks have the size molded on the inner surface. Clean the rubber and look for a marking like 450x86x52.

Compact Track Loaders (CTL)

Conventional Style Tracks

Most CTLs use these common 86 mm pitch options:

  • 320 × 86 × 56
  • 400 × 86 × 56
  • 450 × 86 × 56

Choose width for stability/flotation; keep pitch & link count matched to your sprocket.

Takeuchi Style Tracks

Certain CTLs (especially Takeuchi) use 100 mm pitch fitments:

  • 320 × 100 × 52
  • 400 × 100 × 52
  • 450 × 100 × 52

Different pitch, different link count—verify your sprocket indexing before ordering.

How to Choose

  • Match pitch & link count exactly to your undercarriage.
  • Pick width for your terrain and clearance.
  • Verify guide profile for roller/flange compatibility.
  • Select tread (Z-lug, C-lug, block, turf) for your application.

Order with Confidence

We stock both Conventional and Takeuchi style tracks.

Mini Excavators

Typical Mini-Ex Sizes

Widths ~180–400 mm. Pitches vary by model (e.g., 52.5, 72–75, 90–96 mm). Link counts vary with undercarriage length.

Format: Width × Pitch × Links — e.g., 300 × 52.5 × 86 or 230 × 96 × 33.

Mini-Ex Checklist

  • Confirm roller style (single vs. triple flange) & sprocket tooth profile.
  • Verify guide height/profile of inner lugs.
  • Select tread for digging traction vs. turf protection.
  • Leave adjuster range for proper tensioning.

Mini Track Loaders (MTL)

Overview

MTLs use narrower tracks on compact frames. The sizing format is the same (W × P × L), but tolerances are tighter—match specs exactly.

MTL Checklist

  • Pitch & link count must match; small frames are less forgiving.
  • Pick tread for landscaping/turf or general jobsite traction.

Crawler Carriers

Overview

Carriers run wider, heavy-duty tracks for payload and flotation. Always match pitch and link count to the sprocket. Verify roller spacing and guide style.

Ready to Order?

  • Confirm inner lug shape and roller/flange style.
  • Select tread for mud, snow, or mixed terrain.

How to Be Sure Your New Track Matches

  1. Find the molded size on your current track (inside surface). If present, copy it exactly (e.g., 450x86x52).
  2. Measure & count if no marking: width (mm), pitch (mm), link count (total).
  3. Check undercarriage compatibility: sprocket teeth, roller/flange style, and guide profile.
  4. Pick tread for your terrain (Z-lug for all-around, block for durability, turf for minimal disturbance).
  5. Order two tracks together for CTLs/MTLs when possible to keep wear even.
Important: A correct width with an incorrect pitch or link count will not fit—pitch controls how the sprocket indexes the track.

Quick Reference

Machine TypeSize FormatCommon ExamplesNotes
CTL — Conventional W × P × L 320×86×56, 400×86×56, 450×86×56 Most common 86 mm pitch options. Match links to sprocket.
CTL — Takeuchi Style W × P × L 320×100×52, 400×100×52, 450×100×52 100 mm pitch; different link counts vs. conventional.
Mini Excavator W × P × L 300×52.5×86, 230×96×33 Pitches vary by model (52.5/72–75/90–96 mm). Verify roller style & guide height.
Mini Track Loader W × P × L 250×86×49 (example) Smaller widths; exact pitch/link count is critical.
Crawler Carrier W × P × L 500×100×52 (example) Wide heavy-duty tracks; confirm sprocket & roller compatibility.

Fitment FAQ

What do the three numbers mean (e.g., 450×86×52)?

Width (mm) × Pitch (mm) × Links (count). Width is the overall track width; pitch is the distance between lug centers inside the track; links is the total number of steel inserts/drive lugs around the track.

Will a wider track (e.g., 450 mm instead of 400 mm) affect fitment?

Width changes clearance and ground contact. It does not change sprocket indexing. Always match pitch and link count to your current track and confirm fender/roller clearance.

Where can I find my size without measuring?

Look for a molded stamp on the inner track, check the machine’s owner’s manual, or use our make/model lookup. Always verify against your current track.

Which tread is best for me?

Z-lug is a great all-around option; block for durability; turf/multi-bar to minimize surface disturbance; bar/snow for soft ground and winter traction.

Any installation or break-in tips?

Inspect sprockets/rollers, set track tension per your manual, and re-check after first use. Replace in pairs on CTLs/MTLs when possible.

Need fitment help?

Snap a photo of your inner lugs and any molded size numbers, then contact our team. We’ll confirm pitch, links, guide style, and tread for your machine.