The RA211-21540 backup ring is a precision-engineered Kubota OEM part designed to support sealing functions in idler assemblies. As a critical component in the track tensioning system of mini excavators, it prevents deformation of the primary seal under pressure, ensuring optimal performance and preventing premature wear.
This backup ring fits several Kubota mini excavators, including the KX41-2 series, KX41-3, U15, and U17 models, making it an essential item for regular maintenance or repair of your track idler.
Compatible Kubota Models:
Excavators:
KX41-2 (S Series)
KX41-3 (Serial numbers <= 39999 and >= 40001)
U-15 (KTA), U15, U15-3
U17 (CA), U17-3, U17 (SUNBELT)
