Patent ID: 6640851
Filing Date: 2003-11-04
Classification: A01G

Abstract:
A mounting arrangement for the cutter wheel of a stump grinder comprising:a) a shaft having an inboard end adapted to engage a rotational power source, and an outboard end distal from the power source; b) an inboard hub mounted on the shaft for rotation therewith, and an outboard hub mounted on the shaft for rotation therewith, each hub including a radially extending flange defining a gap between the two flanges adapted to receive a cutter wheel; c) an inboard cast iron shell surrounding the shaft and separated therefrom by an inboard roller bearing and by a layer of lubricant, and separated from the inboard hub by a grease labyrinth; and d) an outboard cast iron shell surrounding the shaft, separated therefrom by an outboard roller bearing and a layer of lubricant, and separated from the outboard hub by a grease labyrinth; the shaft and hubs rotationally movable with respect to the two cast iron shells.