Caterpillar (CAT) Excavator Carrier Rollers
Aftermarket carrier rollers (top roller) for Caterpillar (CAT) excavators. This page lists 3 OEM part numbers, so you can match your machine to the right number and ask for a quote.
Carrier rollers support the upper strand of the track chain and keep it aligned between the idler and sprocket.
CAT carrier roller part numbers by model
| Model | OEM part number | Also fits | Class |
|---|---|---|---|
| CAT 320 | 8E-5600, 286-9824 | 320B, 320C, 320D | 20 t |
| CAT 330 | 6Y-5323 | 330B, 330C, 330D | 30 t |
When to replace carrier rollers
- Roller seized or turning unevenly
- Oil leaking at the seal
- Worn tread or flange where the chain runs
- A bent shaft or loose mounting bracket
What to confirm before ordering
- OEM number on the old roller or in the parts book
- Shaft diameter and length, because the shaft locates in the frame bracket
- Quantity per side
- Machine model and serial number
Part numbers can change within a model series. If your model is not listed, or you are unsure, send the OEM number or machine serial number and we will check it.
Ordering
| MOQ | 10 pcs per part number; mini excavator parts (up to 6 t) from 1 set per machine |
|---|---|
| Lead time | 7–25 days, depending on part type and quantity |
| Warranty | 12 months |
| Payment | T/T, L/C |
| Shipping port | Xiamen |