Kubota Excavator Track Rollers
Aftermarket track rollers (bottom roller) for Kubota excavators. This page lists 6 OEM part numbers, so you can match your machine to the right number and ask for a quote.
Track rollers carry the full machine weight on the track chain links. Single- and double-flange designs with forged shells and lifetime-lubricated floating seals.
Kubota track roller part numbers by model
| Model | OEM part number | Also fits | Class |
|---|---|---|---|
| Kubota KX040-4 | RD118-21700, RD148-21700 | KX121-3, KX121-3S, KX121-3ST | 4 t |
| Kubota KX161-3 | RD441-21702, RD411-21700, RD411-21703 | KX161-3S, KX161-3ST, KX057-4, U45-3, U55-4 | 5.5 t |
| Kubota U35 | RB511-21702 | U35S, U35-S2, KX71-3, KX91-3 | 3.5 t |
When to replace track rollers
- Tread diameter worn down, or a flange worn thin or sharp
- Oil leaking from the seal at the end of the roller
- A roller that no longer turns and has a flat spot on the tread
- Play in the shaft when the roller is levered
What to confirm before ordering
- OEM number on the old roller or in the parts book
- Single-flange or double-flange: many machines use both
- Quantity per side: long-track (LC) machines often carry more rollers
- 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 |