| 摘要 |
A bearing guard is adapted for use in connection with a machine such as a chipping/shredding/grinding machine for lawn and garden use. The bearing guard is used in connection with self-aligning bearings which support the ends of a rotatable shaft provided on the machine and which is exposed to a work cavity in which the chipping, shredding or grinding operations take place. The bearing guard protects the bearings from material which is retained on the rotatable shaft during operation of the machine. The bearing guard comprises a shield surface disposed between the work cavity of the machine and the side of the bearing facing the work cavity. The shield surface has an opening through which the rotatable shaft of the machine passes. The opening is in relatively close dimensional tolerance with respect to the outer surface of the shaft, so as to resist contact of material retained on the shaft with the side of bearing during operation of the machine. The shield surface may be disposed on a separate plate structure which is connected to the housing of the machine along with the housing of the bearing, or it may be formed integrally with one of the housing members of the bearing.
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