Patent ID: 7588372

Claim:
A guide wheel comprising: an outer ring having an outer surface, a first side, a second side opposite said first side, and an opening defined between said first side to said second side, said opening having an inner raceway surface; an inner ring located within said opening of said outer ring, said inner ring having an outer raceway surface; a plurality of balls positioned between said outer raceway surface of said inner ring and said inner raceway surface of said outer ring, and providing a bearing surface there between; a cage for securing said balls in position between said inner ring and said outer ring; a shield comprising a nitrile rubber ring that contacts said outer raceway surface of said inner ring, and a shield element that extends from said nitrile rubber ring toward said inner raceway surface of said outer ring, wherein a space is defined between said shield element and said inner raceway surface of said outer ring; and a seal located between said plurality of balls and said shield, said seal extending between said outer raceway surface of said inner ring and said inner raceway surface of said outer ring, said seal comprising a first rubber seal surface that contacts said inner raceway surface of said outer ring, and a second rubber seal surface that contacts said outer raceway surface of said inner ring.