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SKU:
NLT2T03628
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Bottom Track Roller for Kubota U55-4 / KX057-4 Mini Excavators
$268.49
In Stock
$268.49
Sale price
$268.49
Regular price
Replacement lower track roller for compatible Kubota U55-4 and KX057-4 mini excavators.
Estimated delivery between
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Compatible Models
We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.
Compatible equipment / model
| Application | Fitment Notes |
|---|---|
| Kubota U55-4 / U55-4S | Common reference RD411-21700. |
| Kubota KX057-4 | Often cross-listed with RD411-21703/RD441 revisions; verify serial. |
| Canadian U55CA / KX057-4CA variants | Verify exact undercarriage number. |
Product Overview
Bottom rollers carry the excavator's weight and guide the track through the lower undercarriage. Worn rollers can create rough travel, track wandering and accelerated rail wear.
Kubota undercarriage catalogs show U55-4 commonly using RD411-21700, while KX057-4 listings may use RD411-21703/RD441-series revisions depending on serial. The old title groups several variants, so dimensions must be checked.
Key Features & Performance
- Lower/bottom track roller
- For Kubota U55-4 / KX057-4 family
- Sealed undercarriage wear component
- Part-number and serial verification required
Common Reasons for Replacement
- Flat spots, noisy travel, or seized roller
- Track misalignment or uneven undercarriage wear
- Visible leakage, looseness, or damaged roller shell
Technical Specifications
- Part Type: Bottom Track Roller
OE / Reference Numbers
- RD411-21700
- RD411-21703
Frequently Asked Questions
How do I confirm compatibility? Check the machine serial and original roller part number; U55-4 and KX057-4 can use different roller revisions.
Is this an OEM part? This listing is for a replacement part. Brand names and OE/reference numbers are used to identify fitment unless the listing specifically states that the item is genuine OEM.