Grinding apparatus

Grinding apparatus for grinding grain and the like comprising

• first and second grinding discs, said first disc having an opening centrally located therein
• support structure on which said first disc is fixedly mounted,
• a support shaft having one end fixed to said second disc and extending from the center of a front side of said second disc, normal thereto, and adapted for mounting coaxially on the drive shaft of a motor so that when so mounted, the support shaft extends through the opening in the first disc to support the second disc in a generally coaxial, mutually facing relationship with the first disc, said second disc being rotatable as the motor drive shaft is rotated,
• biasing means disposed in contact with the motor drive shaft and said support shaft for biasing the support shaft and second disc in a direction outwardly from the end of the motor drive shaft,
• a bearing element disposed on a back side of said second disc opposite the front side thereof, said bearing element defining a bearing surface,
• a cover mounted on said support structure to fit substantially over and about said discs, and
• a bearing member disposed in said cover for contacting and pressing against said bearing surface of the bearing element to thereby maintain the support shaft on the motor drive shaft, said bearing member including a ball means loosely held by said cover to protrude from said cover and contact and press against said bearing surface of the bearing element.