Wacker Neuson ST31 tracks and undercarriage, sized 400x86x52 (400 mm wide × 86 mm pitch × 52 links). Made for grading, loading, pallet work and land clearing. Free freight, 24-month warranty.
What the numbers mean on a Wacker Neuson ST31
400x86x52 — 400 mm tread width (about 16"), 86 mm pitch, 52 links
Width is the tread face, pitch is the distance between drive lugs, and links is the count around the loop. All three have to match — a track one link off will not tension correctly no matter how close the width is.
Tread choice for the Wacker Neuson ST31
Size gets the track on the machine; tread decides how it works and how long it lasts. What we stock for this one:
C-Block — concrete, asphalt and hard-packed ground. Longest wear life and the least vibration on hard surfaces
Multi-Bar — mud, snow and soft ground. Deep bar lugs bite and shed material instead of packing up
Zig-Zag — general mixed ground. Balanced traction with a smoother ride than a bar tread
If the machine splits its time between surfaces, buy for the ground you are on most — a hard-surface tread on constant mud will spin, and a bar tread on concrete will wear out in half the hours.
Fitment notes
Wacker Neuson ST31 has compatible track-width options including 400 mm, 320 mm. Choose the width that best matches the application, flotation, traction, ground pressure, and site conditions.
Wacker Neuson ST31 at a glance
Operating weight — 8,241 lb
Engine — 74 hp
Undercarriage parts for the Wacker Neuson ST31
Rollers, idlers and sprockets wear on the same clock as the track. Fitting new rubber over a hooked sprocket or a seized roller is the fastest way to lose the new track — check these while the tracks are off:
CTLs run high ground speed and counter-rotate all day, which is what eats edge lugs and drive lugs first. Replace in pairs where you can: a new track running against a stretched one loads the drive unevenly and you will feel it in the steering.
Same track, other machines
Track size follows undercarriage geometry, not brand, so 400x86x52 shows up on machines from several makers. If you run any of these alongside the Wacker Neuson ST31, it is the same belt:
Not sure which you are running? Read the size off the inside of the old track, or call (850) 816-7898 and we will pull it off the machine record. The Track Finder works by make and model too.
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Real Wacker Neuson ST31 Track Installs
Upgrade your equipment with confidence. Proven and trusted by contractors nationwide—click any jobsite photo below to shop the exact tread pattern your machine demands.
Verified-fit rubber tracks and undercarriage parts for the Wacker Neuson ST31. Confirm size and tread before ordering.
Frequently Asked Questions
What size rubber tracks fit a Wacker Neuson ST31?
The Wacker Neuson ST31 can use 320x86x52 or 400x86x52 rubber tracks. Match the full size on the track you are replacing before you order. If your machine has more than one track setup, choose the width and guide style that matches the track currently on the machine.
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