Part Number: 331/30581
Alternative Numbers: 331/20054
Type: Idler Wheel
This idler wheel is designed for JCB mini excavators in the 5–6.5 ton class, including popular models 8052, 8055, 8056, 8060, 8065. It ensures proper track guidance and works in conjunction with the tensioner to maintain correct track tension.
High-quality construction guarantees wear resistance of the running surface and core strength under impact loads, even under the most demanding operating conditions. A properly functioning idler wheel significantly extends the lifespan of the entire tracked undercarriage.
Function and Fault Diagnostics
The idler wheel is a critical component of the undercarriage. Its main functions are:
Signs of wear or failure include:
⚠️ Safety Warning
Working on a tracked undercarriage is extremely dangerous. Before removing or installing the idler wheel:
Application in machines
|
Brand
|
Type / Series / Model
|
|
JCB |
Mini Excavators: 8052, 8055, 8055 RTS, 8055 ZTS, 8056, 8060, 8061, 8065, 8065 RTS, 8065 DL |
The list above is for reference. It is crucial to verify the OEM part number or idler dimensions.
Data sheet
Specific References






This idler wheel is designed for JCB mini excavators in the 5–6.5 ton class, including popular models 8052, 8055, 8056, 8060, 8065. It ensures proper track guidance and works in conjunction with the tensioner to maintain correct track tension.

















