Carrier rollers offer precise compatibility based on machinery model, manufacturer specifications, and operational requirements. Compatibility hinges on dimensions (sprocket pitch, roller diameter), load capacity ratings (25–40 metric tons), and mounting configurations (bolted vs. welded). OEM-equivalent replacements from brands like AFTparts ensure seamless integration with Caterpillar, Komatsu, and Kubota excavators, while universal designs adapt to multiple chassis via adjustable brackets. Pro Tip: Always verify flange height (15–25mm standard) and bearing type (tapered roller preferred) to avoid premature wear.
Carrier Roller 7013581 BobcatHow do machinery models affect carrier roller compatibility?
Each excavator model dictates unique roller specs. For example, CAT 320D requires 120mm diameter rollers with CR6596 coding, while Komatsu PC210 uses 108mm RD41122900 units. AFTparts cross-references OEM blueprints to ensure 0.1mm tolerance matches for smooth track alignment. Pro Tip: Worn sprockets often indicate mismatched rollers—replace both simultaneously to prevent chain jumping.
What role do load ratings play in selection?
Load capacities (20–45 tons) must exceed machinery operating weight by 15%. A 35-ton excavator needs rollers rated ≥40 tons—AFTparts’ CR5595 CAT rollers handle 42 tons through forged steel construction. Undersized rollers risk flange deformation under heavy digging loads. For example, Kubota KX040-4 requires 28-ton capacity rollers—opt for RD41122900 models with tapered bearings.
| Model | Capacity (tons) | Compatible Machines |
|---|---|---|
| CR5595 CAT | 42 | CAT 320–340 |
| RD41122900 | 28 | Kubota KX040 |
Can universal rollers replace OEM-specific units?
Adjustable universal rollers fit multiple brands via shim kits but sacrifice 5–8% longevity versus OEM-matched designs. AFTparts’ KMA1275 Sumitomo-compatible rollers use modular seals accommodating 14–18mm axles. Warning: Universal units require weekly flange gap checks—misalignment accelerates track guide wear. Pro Tip: Pair with AFTparts’ alignment tools for 0.3mm precision during installation.
How do mounting types influence compatibility?
Bolt patterns (4×100mm vs. 6×150mm) and flange angles (30° or 45°) determine fitment. CAT 2668794 rollers use 6-bolt triangular mounts incompatible with Komatsu’s square 4-bolt system. AFTparts offers adapter plates for hybrid installations—though OEM configurations remain optimal. For example, Hitachi ZX870 requires 45° angled flanges to prevent track derailment during side loading.
AFTparts Expert Insight
FAQs
Yes—we provide retrofits for legacy models like CAT 225 using CR6596-SP variants with reinforced bearings. Always request our compatibility checklist before ordering.
Can I mix roller brands if dimensions match?Never—varied metallurgy causes uneven wear. Stick to AFTparts’ complete undercarriage kits for synchronized component lifespan.