Bottom rollers carry the weight of a tracked machine: the lower rollers that run along the track chain, transferring the excavator or dozer's mass onto the links shift after shift. They are the hardest-worked wear item in the undercarriage after the chain itself, and worn rollers accelerate wear through the whole system. PartsForMachines supplies bottom rollers matched by machine make and model, with the related undercarriage — carrier rollers, idlers, sprockets, track adjusters and track guides — listed in the same section.
Rollers sell by machine fitment, and the page-level data covers the confirming details: single-flange or double-flange pattern (the machine's roller frame dictates the mix and positions), tread diameter, overall width, mounting bolt pattern and pitch. Sealed and lubricated construction is the standard, with the lifetime oil fill and duo-cone seals doing the work of keeping grit out, so a leaking roller is a finished roller. Each product page lists fitment, dimensions and weight, with Compare available to line up options and Ask Simon confirming fitment from the machine model and serial.
Wear measurement decides replacement: tread diameter against the manufacturer's service limit is the standard check, taken with the track slack. Rollers wear as a set, and uneven wear flags alignment or tension problems worth fixing at the same time — undercarriage is a system, and new rollers under a stretched chain or hooked sprocket wear out fast.
Undercarriage jobs are usually urgent, so confirm fitment before ordering: send the machine make, model and serial via WhatsApp 07754288583 for a direct check on roller availability and the matching undercarriage set.
| Part Type | Track Roller |
|---|---|
| Replaces | Kobelco 24100N6505 |
| Manufacturer | Astrak |
| Part Type | Track Roller |
|---|---|
| Replaces | Kobelco 24100N4042N2 |
| Manufacturer | Astrak |
| Part Type | Track Roller |
|---|---|
| Replaces | Kobelco 24100N6505F1 |
| Manufacturer | Astrak |
| Part Type | Track Roller |
|---|---|
| Replaces | Kobelco 24100N4042F3 |
| Manufacturer | Astrak |
| Part Type | Track Roller |
|---|---|
| Replaces | Kobelco 24100N4042F1 |
| Manufacturer | Astrak |
| Part Type | Track Roller |
|---|---|
| Replaces | Kobelco 24100N4042F2 |
| Manufacturer | Astrak |
| Part Type | Track Roller |
|---|---|
| Replaces | Kobelco LP64D00004F1 |
| Manufacturer | Astrak |
| Part Type | Track Roller |
|---|---|
| Machine | Case CK50 |
| Manufacturer | Astrak |
| Part Type | Track Roller |
|---|---|
| Machine | Case CK52 |
| Manufacturer | Astrak |
| Part Type | Track Roller |
|---|---|
| Machine | Kubota KX040 |
| Manufacturer | Astrak |
| Part Type | Track Roller |
|---|---|
| Machine | Kubota U45 |
| Manufacturer | Astrak |
| Part Type | Track Roller |
|---|---|
| Machine | Kubota KX161-2 |
| Manufacturer | Astrak |
| Part Type | Double Flange Track Roller |
|---|---|
| Machine | Caterpillar D3K LGP |
| Manufacturer | Astrak |
| Part Type | Double Flange Track Roller |
|---|---|
| Machine | Caterpillar D3K XL |
| Manufacturer | Astrak |
| Part Type | Double Flange Track Roller |
|---|---|
| Machine | Caterpillar D4K LGP |
| Manufacturer | Astrak |
| Part Type | Double Flange Track Roller |
|---|---|
| Machine | Caterpillar D4K XL |
| Manufacturer | Astrak |
| Part Type | Track Roller (20mm BH) |
|---|---|
| Machine | Extec C12 |
| Manufacturer | Astrak |
| Part Type | Track Roller (20mm BH) |
|---|---|
| Machine | Extec IC13 |
| Manufacturer | Astrak |
| Part Type | Track Roller |
|---|---|
| Replaces | Yanmar 772637-37300 |
| Manufacturer | Astrak |
| Part Type | Track Roller |
|---|---|
| Machine | Hyundai 1EM-1002 |
| Manufacturer | Astrak |
| Part Type | Track Roller |
|---|---|
| Machine | Komatsu PC240NLC-10 |
| Manufacturer | Astrak |
| Part Type | Track Roller |
|---|---|
| Machine | Komatsu PC210-6 |
| Manufacturer | Astrak |
| Part Type | Track Roller |
|---|---|
| Machine | Komatsu PC240NLC-8 |
| Manufacturer | Astrak |
| Part Type | Track Roller |
|---|---|
| Machine | Komatsu PC240NLC-6 |
| Manufacturer | Astrak |
| Part Type | Track Roller |
|---|---|
| Machine | Komatsu PC240LC-8 |
| Manufacturer | Astrak |
| Part Type | Track Roller |
|---|---|
| Machine | Komatsu PC240NLC-7 |
| Manufacturer | Astrak |
| Part Type | Track Roller |
|---|---|
| Machine | SANY SY265C |
| Manufacturer | Astrak |
| Part Type | Track Roller |
|---|---|
| Machine | Liebherr R317 |
| Manufacturer | Astrak |
| Part Type | Track Roller |
|---|---|
| Machine | Hyundai R250NLC-3 |
| Manufacturer | Astrak |
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