A bearing seal provides a first flinger and a second flinger. A first sealing body formed on the first flinger is configured to form sealing engagement with a corresponding surface of the second flinger and/or the second bearing ring, and a second sealing body formed on the second flinger is configured to form sealing engagement with a corresponding surface of the first flinger and/or the first bearing ring. The seal has a lean structure formed at least within a partial scope thereof that faces the rolling elements and/or the cage, which lean structure allows axial space to be released to the interior of the bearing, such that a ratio W/H of the axial size W within the partial scope of the seal to the spacing H between the first and second bearing ring shoulders falls within a range of W/H ≤ 0.5. The invention also provides a rolling bearing with standard boundary dimensions, with the bearing seal provided on its axial side.

A seal configured to seal a gap between a first component and a second component to at least partially retain a fluid on a first side of the seal in a space between the first component and the second component, the seal including a seal body having a radially outer periphery and a central opening configured to receive the first component or the second component, at least one sensor configured to detect a characteristic of the fluid and an adapter. The at least one sensor is disposed on the adapter, and the adapter has a first portion extending through the seal body at a location spaced from and radially between the radially outer periphery and the central opening and a second portion axially abutting the seal body on the first side of the seal.

A seal assembly (10, 110) has an inner seal carrier (14, 114) with seals (16, 116, 18, 118), an outer carrier (30, 130) with inner curved surface (144) matching an outer curved surface (146) of the inner seal carrier for angular pitch adjustment of 3° to 5° for the inner seal carrier within the outer carrier, a flexible seal (36, 136) between the outer carrier and the bearing housing (28, 128), and oil within a cavity (20, 120) between the seals, preferably above atmospheric pressure. Shoulder bolts (140) allow lateral movement of the seal assembly with respect to the bearing housing. The seal assembly allows for misalignment and lack of parallelism of the shaft relative to the bearing housing whilst preventing contamination of the bearing.

A sealing device has a first sealing member and a second sealing member. The first sealing member has a cylindrical part mounted on an outer member, and a lip. The second sealing member has a sleeve into which an inner member is fitted, and a flange extending radially outward. The flange has a rigid flange portion connected to the sleeve, and a circular annular elastic flange portion that adheres to the rigid flange portion. An annular protrusion is formed on an inner periphery of the elastic flange portion, and is in contact with an outer peripheral surface of the inner member. In an initial state, the inner peripheral surface of the protrusion has a cylindrical portion having an inner diameter that is less than that of the sleeve. The cylindrical portion has a length of at least 0.15 mm in the initial state.

A secondary sealing device is for a wheel bearing assembly including a fixed inner axle with an outer circumferential surface and a bearing inner race, an outer hub rotatable about the inner axle and having an inner circumferential surface and a bearing outer race, rolling elements disposed between the inner and outer races, and a primary seal(s) connected with the inner axle and sealingly engaged with the outer hub. The secondary sealing device includes a rigid annular body having an inner radial end coupled with the inner axle and an outer radial end spaced radially inwardly from the inner circumferential surface of the outer hub so as to define an annular gap between the body and the outer ring. The body is located between the primary seal and an axial end of the hub so as to provide a barrier configured to prevent contaminants from contacting the primary seal.

A wheel bearing apparatus includes a hub shaft having a flange to which a wheel is attached and which is located on a vehicular outer side, an outer ring, a plurality of rolling elements, an annular seal member, and an annular slinger. The slinger has a circular ring portion that is in contact with the flange and a tube portion extending from the circular ring portion toward a vehicular inner side. The tube portion has pawl portions located on the vehicular inner side to engage with a recessed portion of an outer periphery of the hub shaft to inhibit the slinger from being displaced toward the vehicular inner side. The tube portion is further provided with a plurality of slits that is formed along a circumferential direction and that is open on the vehicular inner side. The slits include slits with different depths.

A rotation induction device for a vehicle includes: an upper case formed of a synthetic resin material, and having a piston rod passing therethrough; a lower case formed of a synthetic resin material and disposed under the upper case, wherein the piston rod passes through the lower case; a center plate formed of a synthetic resin material, disposed between the upper case and the lower case such that the piston rod passes through the center plate, and configured to induce the rotation of either one or both of the upper case and the lower case; and an inflow prevention part formed on either one or both of the upper case and the lower case, and configured to block an inflow of foreign matter through the piston rod.

The bearing provides an outer ring, an inner ring, at least one seal to one of the rings and cooperating with the other ring, and at least one sealing flange. The sealing flange includes a fixing portion to fix the flange to the other ring, an end portion and a connecting portion to connect the fixing portion and end portion. The end portion of the flange is curved and disposed axially facing the connecting portion. The curved end portion and connecting portion define an annular space that open radially towards the other ring. The curved end portion is mounted axially in contact against an outer lateral face of the seal.

A contamination-resistant bearing assembly includes an inner ring, an outer ring, a rolling unit, two contamination-resistant internal sleeves and two contamination-resistant external sleeves. The outer ring cooperates with the inner ring to define a bearing space where the rolling unit and the sleeves are disposed. The external sleeves are located at two opposite sides of the internal sleeves which are located at two opposite sides of the rolling unit in an axial direction. Each of the external sleeves includes a metal rigid shell and a sealing member.

A magnetic fluid sealing device includes: a housing; a shaft rotatably penetrating through the housing; a first shaft sleeve made of a magnetic conductive material, and fitted over the shaft; a plurality of pole shoes arranged in the housing and fitted over the shaft and the first shaft sleeve, an inner circumferential surface of the pole shoe being provided with a plurality of pole teeth arranged at intervals in an axial direction of the shaft, the shaft and a first part of the plurality of pole teeth being arranged at intervals in a radial direction of the shaft to form a first gap, the first shaft sleeve and a second part of the plurality of pole teeth being arranged at intervals in the radial direction of the shaft to form a second gap; and a permanent magnet arranged in the housing and fitted over the shaft.