An object is to provide a motor-incorporation-spindle ball bearing capable of allowing cooling air which enters inside the bearing of the motor-incorporation-spindle to be discharged smoothly out of the bearing without causing turbulent flow inside the bearing, does not cause a retainer easily to be vibrated, and provides a high level of silent operation. A seal plate has a length to allow air to pass through the bearing from an entrance side toward an exit side substantially straightly without resistance. Therefore, the seal plate is less likely to be exposed to unnecessary force when the air passes through the bearing; the seal plate is prevented from wobble and deformation; stable sealing is ensured; the air is discharged smoothly without causing turbulent flow inside the bearing; a retainer is not easily vibrated, and silent operation is maintained.

A sealing device for a hub bearing assembly, equipped with a rolling bearing unit, a circular metal shield, a radially extending end wall and a double cylindrical lateral wall fixed to and practically orthogonal to the end wall, formed by a first cylindrical lateral wall and a second cylindrical lateral wall. The metal shield is angularly coupled to a radially outer ring of the bearing. The second cylindrical lateral wall is connected in a fixed manner to a radially outer edge adapted to cover an axially inner surface of the terminal edge that is potentially subject to oxidation phenomena with the consequent formation of a layer of rust.

A tilling implement for use with a farm vehicle includes a frame, a tilling element attached to the frame, a bearing assembly configured to allow the tilling element to rotate relative to the frame. The bearing assembly can include a first race, a second race spaced apart from the first race to define a gap therebetween, a bearing rotatably disposed within the gap to allow relative movement between the first race and the second race, a seal including a flexible protrusion having a distal end that presses against the first race to seal off the gap, and a stop positioned adjacent to the flexible protrusion configured to prevent the distal end of the protrusion from bending towards the bearing.

A bearing assembly for mounting a rotatable shaft of a pump and the pump are disclosed. The bearing assembly comprises: a bearing comprising an outer ring and an inner ring; a bearing support configured to support the outer ring of the bearing, the bearing support surrounding at least a portion of an outer surface of the outer ring extending across at least a portion of one end surface of the outer ring; and a shield extending from the bearing support towards the inner ring to thereby obscure at least a portion of an annular gap between the inner and outer ring.