Kubota U45 Rubber Tracks

Replacement rubber tracks for the Kubota U45 mini excavator in 400x72.5Wx72 — 400 mm wide, 72.5 mm pitch, 72 links. Built for digging, trenching, backfill and tight-quarters work, with free freight to the lower 48.

What the numbers mean on a Kubota U45

  • 400x72.5Wx72 — 400 mm tread width (about 16"), 72.5 mm pitch, 72 links, wide guide lugs

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 Kubota U45

Size gets the track on the machine; tread decides how it works and how long it lasts. What we stock for this one:

  • Staggered Block — mixed dirt and gravel. Block stability with better cleanout than a straight block
  • MX — mixed and hard surfaces. A durable general-duty excavator 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.

Kubota U45 at a glance

  • Operating weight — 11,850 lb
  • Engine — 42 hp

Undercarriage parts for the Kubota U45

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:

How these wear

Excavator undercarriages load one side hard on slew and travel, so link cracking usually shows up before the tread wears out. 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 400x72.5Wx72 shows up on machines from several makers. If you run any of these alongside the Kubota U45, 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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Kubota U45 mini excavator

Track sizes

Heavy-Duty Rubber Tracks for U45

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  • 400x72.5Wx72 Heavy Duty Rubber Track | Block
    Kubota U45 400x72.5Wx72 Staggered-Block
    • Heavy Duty | 400x72.5Wx72
    • Smooth Ride
    • Easy Turning
    • Cut Resistant
    $1,716.00$1,698.84

    In stock

    Add to quote
  • 400x72.5Nx72 Directional Rubber Track
    Kubota U45 400x72.5Nx72 400x72.5Nx72
    • Heavy Duty | 400x72.5Nx72
    $1,664.00$1,600.00

    In stock

    Add to quote
  • 400x72.5Yx72 Heavy Duty Rubber Track | All-Terrain
    Kubota U45 All-Terrain
    • Heavy Duty
    • All-Terrain Grip
    • Smooth Ride
    • Cut Resistant
    $1,904.50$1,885.00

    In stock

    Add to quote
  • 400x72.5Wx72 Bridgestone Rubber Track | MX
    Kubota U45 400x72.5Wx72
    • Bridgestone | 400x72.5Wx72
    $2,359.00$2,049.00

    In stock

    Add to quote

Which tread fits Kubota U45?

Pick a tread for your jobsite — then buy above.
+ Recommended surface- Not the primary use— Application dependent
PatternBest UseKey TraitsRoadClayGravelMulchMudTurfAction
Staggered Block Staggered BlockSmooth turning A smoother-riding tread option with easier turning and dependable cut resistance on mixed surfaces.
  • Smooth Ride
  • Easy Turning
  • Cut Resistant
+-+--+View
All-Terrain All-TerrainHard-surface control Precision machine control, easy turning, and extended life on hard surfaces. Preferred by asphalt and concrete contractors working on road and gravel.
  • Precision Machine Control
  • Easy Turning
  • Extended Life
+-+---View

  • 100% Virgin Rubber

    Engineered to resist chunking, tearing, and cutting in harsh, abrasive environments.

  • Continuous Steel Cords

    Jointless internal cable architecture eliminates structural weak points and maximizes overall tensile strength.

  • Drop-Forged Links

    Precision heat-treated guide lugs ensure exact sprocket engagement and prevent de-tracking under heavy side-loads.

  • Corrosion Resistant

    The internal steel framework is fully encapsulated to prevent oxidation, rust, and moisture penetration.

  • Reinforced Sidewalls

    Extra-thick vulcanized rubber and tapered edge profiles protect against curb slashing and lateral impacts from jobsite debris.

  • Low-Vibration Tread

    Optimized lug spacing and pitch geometry absorb shock, reducing undercarriage wear and minimizing cabin vibration.

Kubota U45 fitment data

Machine Performance

Operating Weight11850 lb
Horsepower42 HP

Hydraulics & Lift

Standard Flow32 GPM

Frequently Asked Questions

Common fitment, shipping, and rubber track replacement questions

What rubber tracks are compatible with the Kubota U45?
The Kubota U45 is cataloged with 400x72.5Wx72 rubber tracks in the current TrackTECH storefront data. The size format is width × pitch × links.
What are the best rubber tracks for the Kubota U45?
The best rubber track for the Kubota U45 depends on ground conditions, workload and the balance you want between traction, ride quality and wear life.
Where can I buy new tracks for a Kubota U45?
TrackTECH offers new heavy-duty replacement tracks for the Kubota U45 with low direct pricing, free shipping, fast nationwide delivery and 24-month rubber-track warranty protection. Current prices and available tread options are shown on the page.
How much do Kubota U45 rubber tracks cost?
Price depends on track size, tread pattern and whether you are replacing one track or a pair. Compare the current Kubota U45 options and live pricing on TrackTECH rather than relying on a generic model estimate.
Should I replace worn tracks on a used Kubota U45?
If a used Kubota U45 has worn, cracked or damaged tracks, replacement can improve traction, ride quality, job readiness and how the machine presents at resale. Inspect the undercarriage condition at the same time so new tracks are not being installed over obviously worn components.
Can I buy undercarriage parts for the Kubota U45?
Yes. The current TrackTECH machine record lists these available part families for the Kubota U45: Tracks, Rollers. Availability and pricing are shown with the corresponding products.