Kubota RD411-22900 Top Roller Assembly

The Kubota RD411-22900 top roller, also known as a carrier roller, supports the upper run of the track chain between the sprocket and the idler on compact excavators. It is manufactured to OEM specifications for fit, form, and function, utilizing heat-treated steel components and sealed bearing assemblies to withstand abrasive excavation environments. This assembly serves as a direct replacement for Kubota OEM part numbers RD411-22900, RD547-22900, RD461-21900, and RD411-21703. It is compatible with a range of Kubota mini excavator models across the KX and U series. Proper undercarriage alignment and track tension are maintained through precise dimensional control of the roller flange diameter and shaft bore.