A seal ring (26) configured to be employed with a cross shaft (16) including a center section (17) and four shaft sections (18a, 18b, 18c, 18d) extending in four directions from the center section and formed with step faces (17a) where the center section widens out from base ends of the shaft sections outward in radial directions of the shaft sections, and with bearings (21) for mounting to leading end portions of the shaft sections. The seal ring is fitted over the shaft section and interposed between the bearing and the step face. The seal ring includes a seal lip (34) configured to contact the step face around the entire circumference, and an indentation (36) the seal lip enters by deforming when mounted to the cross shaft.

A structural unit for assembly to a trunnion of a universal joint bearing providing a cup, a sealing ring, which is fixed to the cup, and a shield, which is connected to the cup in a state in which the structural unit is not assembled to the trunnion. The cup includes a bottom and the sealing ring provides at least one sealing lip that points in a direction with an axial component towards the bottom.

A tube yoke end fitting for coupling to a shaft tube of a drive shaft assembly includes a tubular first portion having a first end and a second end. The first end configured for coupling to the shaft tube. The tube yoke end fitting includes a second portion including a pair of ears extending outwardly from the second end of the first portion. The pair of ears is diametrically spaced from each other with respect to the first portion. Each of the pair of ears includes an aperture formed therethrough. A yoke length of the tube yoke end fitting measured from a center of each of the apertures to the first end of the first portion is greater than an ear span of the tube yoke end fitting measured between outer surfaces of the pair of ears.

A seal ring (26) configured to be employed with a cross shaft (16) including a center section (17) and four shaft sections (18a, 18b, 18c, 18d) extending in four directions from the center section and formed with step faces (17a) where the center section widens out from base ends of the shaft sections outward in radial directions of the shaft sections, and with bearings (21) for mounting to leading end portions of the shaft sections. The seal ring is fitted over the shaft section and interposed between the bearing and the step face. The seal ring includes a seal lip (34) configured to contact the step face around the entire circumference, and an indentation (36) the seal lip enters by deforming when mounted to the cross shaft.

A bearing includes an annular cup having an outer race and a radially extending flap. The flap defines an inner circumferential surface and a notch extending outwardly from the inner circumferential surface. The notch includes opposing radially extending sides, an outer circumferential wall, and a locking lip raised from the outer wall. Rolling elements are seated on the outer race and arranged to ride on a shaft. A sealing disc has an outer circumferential surface disposed against the inner circumferential surface and a tab received in the notch with the locking lip extending radially over the tab to secure the scaling disc to the cup.

A seal for sealing between a trunnion and bearing cup of a joint member includes a main annular body. A plurality of annular lips extend radially inwardly from the main body. The lips are configured for engaging an outer bearing surface of the trunnion. A first one and a second one of the lips slope in a first direction with respect to the outer bearing surface of the trunnion and a third one of the lips slope in a second direction with respect to the outer bearing surface of the trunnion.

A universal joint bearing having a cup that serves as an outer ring of the universal joint bearing. The universal joint bearing includes exactly one sealing ring that is provided for sealing a gap between the cup and a trunnion.

A structural unit for assembly to a trunnion of a universal joint bearing providing a cup, a sealing ring, which is fixed to the cup, and a shield, which is connected to the cup in a state in which the structural unit is not assembled to the trunnion. The cup includes a bottom and the sealing ring provides at least one sealing lip that points in a direction with an axial component towards the bottom.

A universal joint includes a bush, a bearing journal supported in the bush by a bearing and a seal assembly configured to form a seal between the bearing journal and the bush. The seal assembly includes an outer body formed from a first material having a first hardness, and a reinforcing body at least partially embedded in the outer body is formed from a second material having a hardness greater than the hardness of the first material. The reinforcing body contacts and forms a slip surface for a rolling element of the bearing. The reinforcing body and the outer body are configured such that the reinforcing body compresses a portion of the outer body against the journal when the seal assembly is mounted on the bearing journal.

A linear roller bearing includes a cylindrical body defining a cylindrical axis and a diameter. The cylindrical body defines a cylindrical body axial length, and a ratio of the diameter to the cylindrical body axial length ranges from 0.75 to 1.1.