A reinforced JSA0131 idler wheel (front idler) manufactured by the renowned brand KERTRACK. This is a key undercarriage component, dedicated to heavy JCB crawler excavators of the JS330 series. The wheel is supplied as a complete unit ready for installation (body, shaft, seals, bushings), ensuring restoration of the track tensioning system's factory performance.
KERTRACK undercarriage products are synonymous with durability in harsh conditions. Thanks to advanced heat treatment processes (induction hardening) and high-quality floating seals, idler wheels from this brand guarantee long service life even when working in mud, sand, and quarries.
| Machine Type | Models |
|---|---|
| Crawler Excavators | JCB JS330 (various series: Auto, LC, NLC - check dimensions) |
Compatibility may depend on the machine's serial number and undercarriage version. We recommend verifying yoke dimensions before purchase.
The idler wheel works directly with the track chain and the tensioner cylinder (spring). When replacing the wheel, it is worth assessing the condition of chain links and the proper operation of the hydraulic tensioner.
A damaged or seized idler wheel causes excessive motion resistance, leading to accelerated wear of the entire undercarriage (chain, rollers, sprockets) and track derailment, which poses a danger when working on slopes.
The idler wheel is responsible for maintaining proper track tension and guiding it at the front of the undercarriage.
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No, the product is the complete idler wheel (roller + shaft + seals). The mounting brackets (yokes) that attach the wheel to the tensioner are not included and are usually a reusable part.
KERTRACK wheels are factory-filled with oil and sealed for life ("maintenance-free"). They do not require periodic lubrication maintenance.
No. The JS220 is a smaller machine and uses different undercarriage components. This wheel is dedicated to the larger JS330 series (33-ton class).
Do you have doubts or need confirmation to avoid costly downtime? Call us. Our experts will help you select the right part to get your equipment back to work as quickly as possible.
Data sheet
Specific References
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