A labyrinth seal element comprises a primary wall extending generally radially outwardly from a central axis, a central opening within said primary wall for receiving a shaft, and a plurality of spaced generally axially extending annular scavenging walls projecting from a side of the primary wall. Each axially extending annular scavenging wall has a radially outer surface which diverges away from the axis as it extends from the primary wall. At least one of the annular scavenging walls partly defines a radially outwardly facing annular groove for inhibiting passage of dirt radially inwardly along the respective side of the primary wall towards the axis.
A waterproof ball bearing device comprises an inner ring, an outer ring arranged coaxially with the inner ring, a plurality of balls held between the inner and outer rings, rubber-sealing plates placed at both sides of the balls to cover openings formed between the inner and outer rings, wherein at least one of the rubber-sealing plates is provided with an annular projection in a cylindrical form extending from the outer surface along the center axis of the inner and outer rings.
An anti-friction bearing has a covering comprising first and second caps respectively over each of its races, and the caps are snap-locked to the bearing so as to enclose the bearing within it and to protect the same. An elastic material ring surrounds the peripheries of the two caps and protrudes outwardly protecting the bearing against impact damage. The periphery of the wall of one of the caps is conically tapered and the other of the caps pushes the elastic ring toward the wider end of the tapered wall for tensioning the ring.
A rolling bearing has an outer ring and an inner ring and rolling elements positioned between the inner and outer rings. A seal at each end of the bearing includes a sheet metal portion extending radially from and affixed to the inner ring, and an elastic seal portion sliding on the bore of the outer ring. A plurality of axially inwardly extending projections on the sheet metal portion have different lengths, with their lengths increasing with increasing diameters thereof.
This invention relates to a seal for protecting an end of an idler roll against contaminants. The seal includes a fastener engageable with the end of the idler roll and an integral first sealing member molded onto the fastener and extending radially outward from the fastener. A second sealing member is integrated with the first sealing member. The first sealing member and the second sealing member project into frictional engagement with the end of the idler roll. When assembled with the end of the idler roll, the first sealing member and the sealing member are biased into frictional engagement with the end of the idler roll, thus protecting the end of the idler roll from contaminants in wet environments.
A self-sealing journal assembly for use with a load shaft of a development apparatus includes a bearing member, a sliding member that is keyed to a shaft member, and that is forced into contact with the bearing member by a plurality of deflectable cantilever spring fingers.
