Carrier rollers, the top rollers, support the track chain on its return run across the top of the track frame, keeping the chain aligned and stopping it sagging and slapping between idler and sprocket. PartsForMachines supplies carrier rollers matched by machine make and model, with the rest of the undercarriage system, bottom rollers, idlers, sprockets, track adjusters and guides, listed in the same section.
Rollers sell by machine fitment, and the confirming data sits on each product page: tread diameter, overall width and length, mounting style, with stem-mount and flange-mount the common patterns, and bolt details. Sealed, lubricated-for-life construction is the standard, so a leaking carrier roller has finished its service life. A machine carries far fewer carrier rollers than bottom rollers, but their failure is loud and destructive: a seized top roller flat-spots, the chain saws into it, and the slapping chain accelerates wear on links and frame. Compare lines up options where patterns overlap, and Ask Simon confirms fitment from the machine model and serial.
The wear checks are simple: tread diameter against the service limit, free rotation by hand with the chain slack, and no oil weep at the seals. Carrier rollers are usually replaced during the same intervention as chain or bottom-roller work, since access is open and the parts are cheap relative to the labour of a second visit.
Undercarriage jobs run urgent, so confirm fitment first: send the machine make, model and serial via WhatsApp 07754288583 for availability on carrier rollers and the matching undercarriage parts.
| Part Type | Carrier Roller |
|---|---|
| Machine | Caterpillar 305 CR |
| Manufacturer | Astrak |
| Part Type | Carrier Roller |
|---|---|
| Machine | Caterpillar 304.5 |
| Manufacturer | Astrak |
| Part Type | Carrier Roller |
|---|---|
| Machine | Caterpillar 304 CR |
| Manufacturer | Astrak |
| Part Type | Carrier Roller |
|---|---|
| Machine | Komatsu PC240NLC-8 |
| Manufacturer | Astrak |
| Part Type | Carrier Roller |
|---|---|
| Machine | Komatsu PC200-8 |
| Manufacturer | Astrak |
| Part Type | Carrier Roller |
|---|---|
| Machine | Komatsu PC190LC-8 |
| Manufacturer | Astrak |
| Part Type | Carrier Roller |
|---|---|
| Machine | Komatsu PC240LC-8 |
| Manufacturer | Astrak |
| Part Type | Carrier Roller |
|---|---|
| Machine | Komatsu PC240-10 |
| Manufacturer | Astrak |
| Part Type | Carrier Roller |
|---|---|
| Machine | Komatsu PC240NLC-10 |
| Manufacturer | Astrak |
| Part Type | Carrier Roller |
|---|---|
| Machine | Komatsu PC190NLC-8 |
| Manufacturer | Astrak |
| Part Type | Carrier Roller |
|---|---|
| Machine | Komatsu PC228USLC-3 |
| Manufacturer | Astrak |
| Part Type | Carrier Roller |
|---|---|
| Machine | Komatsu PC228US-3E |
| Manufacturer | Astrak |
| Part Type | Carrier Roller |
|---|---|
| Replaces | Mait 2175022100 |
| Manufacturer | Astrak |
| Part Type | Carrier Roller |
|---|---|
| Machine | Komatsu PC228USLC-8 |
| Manufacturer | Astrak |
| Part Type | Carrier Roller |
|---|---|
| Machine | Komatsu PC220LC-8 |
| Manufacturer | Astrak |
| Part Type | Carrier Roller |
|---|---|
| Machine | Komatsu PC210LC-11 |
| Manufacturer | Astrak |
| Part Type | Carrier Roller |
|---|---|
| Machine | Komatsu PC210LC-8 |
| Manufacturer | Astrak |
| Part Type | Carrier Roller |
|---|---|
| Machine | Komatsu PC210LC-10 |
| Manufacturer | Astrak |
| Part Type | Carrier Roller |
|---|---|
| Machine | Komatsu PC220-8 |
| Manufacturer | Astrak |
| Part Type | Carrier Roller |
|---|---|
| Machine | Komatsu PC210NLC-8 |
| Manufacturer | Astrak |
| Part Type | Carrier Roller |
|---|---|
| Machine | Komatsu PC210-10 |
| Manufacturer | Astrak |
| Part Type | Carrier Roller |
|---|---|
| Machine | Komatsu PC200LC-8 |
| Manufacturer | Astrak |
| Part Type | Carrier Roller |
|---|---|
| Replaces | Komatsu 20Y-30-08891 |
| Manufacturer | Astrak |
| Part Type | Carrier Roller |
|---|---|
| Replaces | Komatsu 20Y-30-08091 |
| Manufacturer | Astrak |
| Part Type | Carrier Roller |
|---|---|
| Replaces | Komatsu 20Y-30-08050 |
| Manufacturer | Astrak |
| Part Type | Carrier Roller |
|---|---|
| Replaces | Komatsu 20Y-30-00670 |
| Manufacturer | Astrak |
| Part Type | Carrier Roller |
|---|---|
| Replaces | Komatsu 20Y-30-00481 |
| Manufacturer | Astrak |
| Part Type | Carrier Roller |
|---|---|
| Machine | Komatsu PC160LC-7 |
| Manufacturer | Astrak |
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