A rotor for a fiberising apparatus includes a rotor housing; a first and second bearing assembly, wherein each bearing assembly has at least two ball bearings, each seated in a respective bearing seat; a substantially horizontal shaft rotatably mounted between the first bearing assembly and the second bearing assembly; and a plurality of resilient dampers arranged in an annular ring, wherein each resilient damper is releasably connected at a first end to the bearing seat and is releasably connected at a second end to the inner wall of the rotor housing.

A rotor for a fiberising apparatus includes a rotor housing and a first and second bearing assembly, wherein each bearing assembly includes at least two ball bearings, each seated in a respective bearing seat. A substantially horizontal shaft rotatably is mounted between the first bearing assembly and the second bearing assembly. The apparatus includes a plurality of resilient dampers arranged in an annular ring, wherein each resilient damper is releasably connected at a first end to the bearing seat and is releasably connected at a second end to the inner wall of the rotor housing.