Caterpillar Rubber Track Specifications by Model
Caterpillar produces compact excavators and compact track loaders across multiple generations and configurations and the rubber track specification varies meaningfully between them. The table below the most frequently ordered Cat rubber track specifications in our range. All specifications must be confirmed against your machine serial number before ordering production year and regional market variants exist across multiple Cat models.
Caterpillar Mini Excavator & Compact Track Loader Track Specifications
The Caterpillar Cat 301 and Cat 301.5 mini excavators typically use a 180 × 72 × 37 rubber track configuration. Because there are width variations across production batches, it’s important to confirm the machine’s serial number before ordering.
For the Cat 302 and Cat 302.5 mini excavators, the standard track size is 230 × 48 × 66, which is consistent across most production years and generally does not vary.
The Cat 303 and Cat 303.5 models use a 300 × 52.5 × 84 track specification. However, these machines were produced with multiple undercarriage configurations, so verifying the serial number is essential to ensure compatibility.
Cat 305 and Cat 305.5 mini excavators are commonly fitted with 400 × 72.5 × 72 rubber tracks. As with other mid-range models, width variations can occur, so serial number confirmation is recommended.
For the larger Cat 308 and Cat 308.5 mini excavators, the standard track size is 450 × 81 × 76, with most machines sharing a consistent specification across production runs.
Moving to compact track loaders, the Cat 247B uses a 320 × 86 × 52 track. This is a CTL-specific setup, meaning it requires a reinforced rubber track with a stiffer steel cord core to handle higher torque and load demands.
Similarly, the Cat 259D compact track loader also uses a 320 × 86 × 52 configuration. However, slight width variations can exist, so confirming the serial number remains important before purchase.
All specifications must be confirmed against your machine serial number before ordering. Cat 259D undercarriage parts and Cat 247B undercarriage parts carry production variant differences not fully captured by model name alone.
Warning Signs, When Your Cat Rubber Tracks Need Replacing
Caterpillar's precise undercarriage geometry means a worn rubber track distributes abnormal stress across the Cat undercarriage system faster than on less tightly toleranced machines. Replace your Cat rubber tracks if you are seeing any of the following:
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Tracks derailing on turns — steel core stretch beyond what the Cat track adjuster can compensate for. A tensioning problem has become a replacement situation.
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Steel cord visible at the outer or inner track surface — full compound wear-through. Every operating hour from this point risks sudden separation.
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Cracking across or between lugs — compound hardening from UV exposure or over-tensioning. Surface cracks propagate under operating load.
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Uneven lug wear across the track width — the Cat rubber track is running off-centre. Inspect idler alignment and track adjuster condition alongside the replacement.
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Drive lug damage on the inner track surface — abnormal Cat sprocket contact shearing material from the drive lugs. Inspect Cat sprocket tooth profile before fitting a new track.
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Track adjuster at maximum extension — the Cat track has stretched beyond the adjuster's travel range. Replacement cannot be deferred.
Cat Excavator Tracks vs Cat Compact Loader Tracks, The Specification Difference
Caterpillar produces rubber tracks for two fundamentally different operating profiles across its compact machine range and the distinction is critical when ordering.
Cat mini excavator rubber tracks are engineered for the longitudinal tension loads and intermittent lateral loads of excavator operation. The steel cord configuration is specified for straight-line travel and gradual directional changes with intermittent high-load digging cycles.
Cat compact track loader rubber tracks covering machines including the Cat 259D and Cat 247B are engineered for the counter-rotation operating profile that defines CTL steering. The steel cord core is stiffer and rated to a higher lateral shear specification than Cat excavator tracks. The drive lug geometry is matched to the Cat CTL sprocket drive tooth profile rather than the Cat mini excavator sprocket profile.
Cat skid steer steel tracks, an alternative to rubber tracks on some Cat CTL models carry their own dimensional and mounting specifications distinct from Cat rubber track specifications. Contact our team if you are unsure whether your Cat machine runs rubber tracks or steel track pads as standard.
At Imara Engineering, Cat excavator rubber tracks and Cat compact loader rubber tracks are stocked and specified as distinct product categories not interchangeable inventory within the Cat undercarriage parts range.
OEM Quality. Cat Specification. Without the Dealer Premium.
Every Caterpillar rubber track in our range is held to three engineering standards confirmed against the Cat OEM specification for each model before the track enters our inventory:
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Continuous spiral-wound steel cord core — rated to the tensile specification for the specific Cat machine type. Cat excavator tracks and Cat compact loader tracks carry different steel cord ratings reflecting their different operating load profiles.
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High-carbon rubber compound — formulated for cut resistance, abrasion tolerance, and UV stability across the operating conditions Cat compact excavators and track loaders encounter across construction, landscaping, and agricultural applications.
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OEM-matched pitch and lug geometry — dimensionally accurate to Cat specification so the track engages the Cat sprocket tooth profile and Cat idler wheel correctly from the first operating hour, without abnormal stress on any surrounding Cat undercarriage component.
OEM Caterpillar rubber tracks carry a brand premium above equivalent quality aftermarket specification. At Imara Engineering, the steel cord rating, compound specification, pitch accuracy, and fitment guarantee replicate the Cat dealer standard. The premium does not.
What to Inspect Before Fitting New Caterpillar Rubber Tracks
Fitting new Cat rubber tracks to a machine with worn surrounding undercarriage parts guarantees a shortened replacement cycle:
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Cat Sprockets — hook wear or pointed tooth profile on the Cat sprocket will shear drive lugs from the new track's inner surface within a fraction of its expected service life. Inspect and replace where wear is evident.
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Cat Idler Wheels — a worn Cat idler flange causes the new track to run off-centre from the first operating hour, reproducing the uneven lug wear pattern that indicated the problem originally.
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Cat Track Adjusters — a worn or leaking Cat track adjuster cannot maintain correct tension on the new track. Confirm the adjuster condition before installation.
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Cat Track Rollers — a seized Cat track roller creates a point load on the rubber track inner surface. Inspect all rollers before fitting new tracks.
Explore the complete Undercarriage Parts range at Imara Engineering including Cat track rollers, Cat idler wheels, Cat sprockets, and Cat track adjusters.
