The sealing system seals the bearings of a floor machine. The sealing system provides a sealing base and a sealing head. A seal is positioned between the sealing base and the sealing head to seal the bearing. The sealing base secures to the driver plate. The sealing base extends upward above the bearing. The sealing head is positioned above the sealing base. The sealing head is positioned radially inward of the sealing base at the bearing. The sealing head extends upward above the sealing base and extends outward beyond an upper portion of the sealing base to be located radially outward from the sealing base. The seal is located at an upper portion of the sealing base. The seal is located radially outward from the sealing base. The seal is located below the sealing head at a sealing aperture located between a sealing shoulder and a sealing neck.

A Sealing device for sealing off a bearing unit from oil contaminants is disclosed herein. The sealing device comprises an annular metallic screen integral to a stationary inner ring, an annular metallic support integral to a rotatable outer ring, and an elastomeric element mounted on the support and comprises a radial lip and an axial lip that cooperate in a sliding and contacting manner with the screen.

A sealing device for sealing off external contaminants from a bearing unit between a stationary radially outer ring and a rotatable radially inner ring, the sealing device including a first, metallic and rotatable annular screen having a first mounting area for assembly with interference on the radially inner ring, a second, metallic and stationary annular screen having a second mounting area for assembly with interference on the radially outer ring, an annular sealing element made of elastomeric material, integrally supported by the second annular screen, and equipped with at least one contacting annular sealing lip projecting axially and radially from the second screen towards the first screen, and a non-contacting annular lip extending axially and facing a first flange portion of the first annular screen.

A sealing assembly for bearings, in particular for use in agriculture, the sealing assembly having a first shield, which extends from an outer surface of the inner ring to an inner surface of the outer ring, and is mounted on the outer surface of the inner ring, and a seal with a plurality of contact lips supported by the first shield, and provided with a predetermined number (N) of contact lips arranged in series axially next to one another. The contact lips may lie, when in a respective pre-assembly configuration, in respective planes (P) inclined with respect to a central axis (A) of the bearing, and may have radial lengths decreasing axially towards the bearing.

A sealing assembly for bearings, in particular for use in agriculture, comprising a primary sealing barrier and a secondary sealing barrier, which are arranged in series along a potential path (P) of ingress of contaminants into the bearing, and have, respectively, a first seal and a second seal with a plurality of contact lips. The contact lips of the first and second seal with a plurality of contact lips may be static lips that do not rotate about an axis (A) of rotation of the bearing.

A temperature-robust polymer shroud for a roller bearing seal includes a shroud body and an inner diameter leg defining respective portions of a single continuous part. The shroud body encircles a rotation axis of the polymer shroud and extends predominantly in directions orthogonal to the rotation axis from an inner diameter to an outer diameter. The inner diameter leg connects to the shroud body at the inner diameter and encircles the rotation axis, wherein, along the entire inner diameter of the shroud body, the inner diameter leg is oriented at an oblique angle to the rotation axis to extend both (a) radially inward from the inner diameter and (b) axially away from the inner diameter along a first direction parallel to the rotation axis. A roller bearing seal includes a seal case, an elastomer lip, and the temperature-robust polymer shroud.

A sealing system including an annular support, an annular sealing element and an annular shielding element; a first and a second lip of the sealing element interact slidingly with an abutment surface of the shielding element and each include: a root portion which extends perpendicularly in cantilever fashion from a flange portion of the annular support; a flexing portion, which extends in cantilever fashion from the root portion in an oblique direction with a thinner radial thickness, delimited by an annular internal surface facing the abutment surface and by an annular external surface facing towards the support, consisting of surfaces of revolution generated by segments of circumference; and a contact portion including a wedge-shaped overhang and a step portion flanking the overhang, which forms with the abutment surface a first and a second angle (α, β), the first angle facing the annular support and being smaller than the second angle.

A hub bearing assembly includes a housing with a vertical bore, a bearing outer ring disposed within the bore and coupled with the housing and a bearing inner ring disposed within the bearing outer ring and having a central bore configured to receive a portion of the shaft. A set of rolling elements are disposed between the bearing outer and inner rings. An upper seal is disposed within the housing bore externally of the outer ring and includes an annular elastomeric seal body and a garter spring biasing a seal lip radially inwardly. A lower seal is disposed between the bearing outer and inner rings. Either the bearing inner ring is sized such that upper seal is disposed about the bearing inner ring or the hub bearing assembly further comprises an annular spacer disposed within the upper seal and adjacent to the upper axial end of the bearing inner ring.

Sealing device for a bearing unit having at least one contact lip operatively in sliding contact with a contact surface of the bearing unit and in turn provided with a wedge portion which forms with respect to the contact surface a first angle (α) facing a medium to be contained and a second angle (β) opposite the first angle, wherein during operating conditions, the second angle (β) is smaller than the first angle (α) and with a first surface having a concave shape, the concavity of which is defined by a first radius (R1); wherein the second angle (β) is between 48° and 55° and the length of the first radius (R1) is between 2.0 mm and 10.00 mm.

A bearing provides a first ring and a second ring capable of rotating concentrically relative to one another, and at least one seal provided with at least one sealing lip. The bearing further includes a sealing module providing a carrier reversibly secured to the first ring, the seal being mounted radially into contact with the carrier, a friction ring reversibly secured to the second ring, the sealing lip of the seal coming into contact with the friction ring, and at least one spacing element axially interposed between the friction ring and the second ring.