Abstract: A seal assembly having first and second annular seal elements each having a generally axially extending base and an annular radial lip. Each of the bases includes a wear surface portion, a central portion and an end portion. Each of the annular radial lips extend from a respective end portion. Each of the central portions include at least one bore therethrough. The first and second seal elements are mounted on respective members and are arranged such that the wear surface portion of each seal element provides a wearing surface for the radial lip portion of the other seal element. Furthermore, when assembled, the seal assembly forms a fluid tight annular cavity between this first and second annular seal elements and the bores permit the passage of a fluid medium into and out of the annular cavity.

Abstract: A seal for closing the radial space between two coaxial, radially spaced, relatively rotatable parts. Each of an axially inner and an axially outer sealing ring comprises an approximately L-shaped metal part having sealing lips of elastic plastic material arranged on it. The axially outer sealing ring seated on the radially inward part has a first sealing lip which faces either the interior of the radially outward part or the axial leg of the axially inner sealing ring. To prevent contamination of that first sealing lip, the outer sealing ring has an obliquely outwardly directed fling lip which is radially inward of the first sealing lip and extends approximately into the region of a plane determined either by the axially outer front surface of the axially outwardly extending leg of the inner sealing ring or of the radially outward part. The first sealing lip may also have an obliquely outwardly directed extension located radially inwardly of and extending axially outward of the first sealing lip.

Abstract: A seal is particularly suited for closing the ends of an antifriction bearing which is located on a journal where its inner races are captured between wear rings and backing elements having overhangs which are directed back toward the end of the bearings and, as such, encircle the wear rings. Indeed, a seal exists at each end of the bearing for isolating the annular space between the inner and outer races of the bearing. Each seal includes a case that is fitted into the end of the outer race and projects axially from that race as well as radially inwardly toward the wear ring. In addition, it has two elastomeric lips which are presented toward the wear ring, one being configured primarily to retain lubricant in the annular space between the two races of the bearing and the other to exclude contaminants from that space. The seal also has an elastomeric spray shield which is attached to the case and projects radially outwardly from it toward the overhang.

Abstract: A seal assembly includes a stiff annular case and a resilient annular seal. The seal has a peripheral rim connected to a peripheral edge of the case and a peripheral rim extending radially from the case for resiliently radially sealing against a first surface, such as a shaft or shaft housing, spaced radially from the case. An intermediate rim extends axially from the body of the seal relative to the seal and case for resiliently axially sealing against a second surface, such as the outside surface of an antifriction bearing, located axially adjacent the case and extending between the first surface and the case. The peripheral edge of the case to which the seal is connected may be skewed at an obtuse angle relative to a radial flange of the case. The seal extends radially outward from the case in one embodiment and radially inward from the case in another embodiment.

Abstract: The present invention relates to a seal (1) comprising a sealing means (2) and a casing means (3). The casing means (3) is arranged with a Z-shaped member (7, 10, 11), of which one portion (10) preferably is arranged with recesses (13) in order to provide for a rotational speed and measuring means.

Abstract: An oil lubrication system for a bearing positioned between two rotatable shafts, especially a pilot bearing (1) for a main shaft (3) in a transmission. The lube oil is fed predominantly radially inwardly on one side (11) of the pilot bearing (1) and is radially drained outwardly on the other side (12) via an annular drainage passage (8) located between the two shafts. An elastic rubber seal (4) is situated in the drainage passage (8) which, during operation, is opened by the centrifugal force or by the pressure of the lube oil pumped through the system and closes the drain passage (8) during downtime of the transmission. The elastic rubber seal (4) can be fastened to the input shaft (2) via a body (44) especially when the sealing lip (41) is to be opened by the centrifugal force. In addition, fastening to the main shaft (3) is also possible when the sealing lip is to be predominantly opened by the oil lube pressure pumped to the pilot bearing (1).

Abstract: A tapered roller bearing having an inner ring and an outer ring, each respectively having a tapered race, a plurality of tapered rollers, a cage which retains the tapered rollers at an even interval in the circumferential direction and first and second seals. The first seal has a lip and main element, the main element having mounted on the small diameter end portion of the inner ring, and the lip being forced in the axial outward direction of the bearing against the outer ring, and separated from the outer ring when forced in the inward axial direction. The second seak has a lip and main element, the main element mounted on the large diameter end portion of the inner ring, and the lip forced in the axial inward direction of the bearing against the outer ring, and separated from the outer ring when forced in the axial outward direction. The lips of the first seal and second seal are moved and separated from the outer ring, thus creating a clearance, by a force acting in the same direction.

Abstract: A tapered roller bearing having an inner ring and an outer ring, each respectively having of a tapered race, a plurality of tapered rollers, a cage which retains the tapered rollers at an even interval in the circumferential direction, and first and second seals. The first seal has a lip and main element, the main element being mounted on the small diameter end portion of the inner ring, and the lip being forced in the axial outward direction of the bearing against the outer ring, and separated from said outer ring when forced in the inward axial direction. The second seal has a lip and main element, the main element mounted on the large diameter end portion of the inner ring, and the lip forced in the axial inward direction of the bearing against the outer ring, and separated from said outer ring when forced in the axial outward direction. The lips of the first seal and second seal are moved and separated from the outer ring, thus creating a clearance, by a force acting in the same direction.

Abstract: A seal assembly (28) is provided for sealing between a static sidewall (12), a rotating first member having a flat and annular surface (22) disposed therein, and a concentric rim (34) disposed between the sidewall (12) and first member (22). The rim (34) is supportably secured to an arcuate hood (18) which extends axially from the rim (34).

Abstract: A novel seal for transversely sealing a bearing includes a seal body formed from a stiff, homogeneous material. The seal body is adapted to be received at outer race groove and inner race land. The seal is characterized by a set of annular hinges formed in the seal body in such a manner that the otherwise rigid seal will dynamically compensate for dimensional differences between the seal and the bearing races, thereby maintaining the seal integrity.

Abstract: 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.

Abstract: Seal for a generally annular gap between a pair of relatively rotatable or reciprocatory annular machine members, one member having at least one continuous perimeter surface portion located in the gap or in contiguity to the gap, and the other member having a corresponding surface portion located in the gap or in contiguity to the gap, respectively, characterized by a first coating of an adhesive material applied to said one surface portion, and a second coating of a multitude of closely spaced short flexible fibers of a generally equal length supported in said adhesive material, and said fibers being generally oriented with respect to said one surface portion, each fiber being independently secured solely at one end by said adhesive to said one surface portion, and at least a plurality of the free fiber ends in anti-frictional contact with said corresponding surface portion of said other member.

Abstract: An elastic annular seal for use in an antifriction bearing wherein a portion of the inner race extends axially beyond the adjacent end face of the outer race and the races define an annular gap extending axially toward the chamber for the rolling elements of the bearing. The seal has a disc-shaped supporting portion which is anchored in a groove of the portion of the inner race, a sleeve which extends from the supporting portion axially toward and into the gap and bears against the inner race, a first lip which extends from the supporting portion and one axial end of the sleeve externally of the gap and sealingly and slidingly engages the end face of the outer race, and a second lip which is integral with the other axial end of the sleeve and slopes in the gap radially outwardly toward and into sealing and sliding engagement with the outer race.

Abstract: A seal assembly for sealing a chamber formed between the radially inner and outer coaxial members spaced apart radially from each other and rotatable relative to each other comprises a first radial member extended radially inwardly from the outer member toward the outer periphery of the inner member, a second radial member disposed axially outside from the first radial member and extended radially outwardly from the inner member toward the outer member so that the first and second radial members may oppose to each other, a first seal means disposed between the tip end of the first radial member and the inner member, a second seal means disposed between a side surface of the first radial member and the second radial member, and a third seal means disposed between the outer member and the second radial member, the first, second and third seal means being so formed that leak of lubricant contained in the chamber may be permitted, while flow of foreign material from exterior may be prevented.

Abstract: A sealed bearing cup, in particular, for universal joints which has a support body connected to the bearing cup and a seal ring fastened to this body having at least one axially elastically deformable sealing lip, characterized in that the support body (10) with the seal ring (13) is arranged axially slidable in the bore of the bearing cup (2) and is provided with a radially flange (17) which is located opposite the front face (16) of the bearing cup (2).