A seal assembly for sealing a grease lubricated large rolling-element bearing includes a radial shaft seal having at least one seal lip configured to sealingly abut against a shaft to seal a bearing interior and substantially prevent a grease discharge from the bearing and a grease flow regulation device, such as an annular pumping ring, for regulating a grease pressure at the at least one seal lip, the grease flow regulation device being mounted adjacent to the radial shaft seal at a side of the radial shaft seal that is intended to face the bearing interior in an installed state.

A rolling bearing having a first ring and second ring capable of rotating concentrically relative to one another, at least one first wire race mounted in the first ring, at least one second wire race mounted in the second ring, and at least one row of radial rollers radially interposed between raceways provided on the first and second wire races. The second ring provides at least two guide flanges to axially retain therebetween the row of radial rollers. The axial length of the raceway of the first wire race is greater than the axial length of the raceway of the second wire race.

The rolling bearing provides a first ring and second ring capable of rotating concentrically relative to one another, at least one first wire race mounted in the first ring, at least one second wire race mounted in the second ring, and at least one row of radial rollers radially interposed between raceways provided on the first and second wire races. The second ring comprises at least two guide flanges to axially retain therebetween the row of radial rollers. The first ring includes at least one retaining rib extending into the radial space that exists between the first and second rings and towards the second ring, the retaining rib protruding radially relative to the raceway of the first wire race.

Provided is disclosure for an example providing protection from electrical discharges for a rolling bearing assembly, where the rolling bearing assembly comprises an inner ring with an inner ring raceway, an outer ring with an outer ring raceway, rolling elements configured to roll or rotate between the inner ring raceway and the outer ring raceway, and at least one electrically conductive part with a first end and a second end, where the first end is configured to electrically contact the inner ring and the second end is configured to electrically contact the outer ring.

A rolling bearing for rotatably supporting a shaft has an inner ring with a first raceway for a rolling body, an outer ring with a second raceway for a rolling body, and rolling bodies which are arranged between the raceways of the bearing rings. At least two plates are fastened to a first of the bearing rings, wherein an electrically conducting element is arranged between the two plates, which electrically conducting element lies against the respective other bearing ring or a component which is connected to the respective other bearing ring.

A bearing assembly comprises an inner ring comprising an inner ring raceway, an outer ring comprising an outer ring raceway, rolling elements configured to roll or rotate between the inner ring raceway and the outer ring raceway, at least one electrically conductive part with a first end and a second end, and a seal coupled to the at least one electrically conductive part. The seal is configured to directly contact only one of the inner ring or the outer ring. The first end is configured to electrically contact one of the inner ring and the outer ring and the second end is configured to electrically contact the other of the inner ring and the outer ring.

A power system includes an electric motor for driving a left wheel and a right wheel of a vehicle, an electric motor control device for controlling the electric motor, a transmission disposed on a power transmission path between the electric motor, the left and right wheels, a differential device for distributing output decelerated by the transmission to the left and right wheels, a case which accommodates the electric motor, the transmission, and the differential device, a left axle of which one end is connected to the differential device and the other end extends from the case to be connected to the left wheel, and a right axle of which one end is connected to the differential device and the other end extends from the case to be connected to the right wheel. A conductive rotation allowing member having conductivity is provided between the differential device and the case.

In order to determine information about the generation of heat in a bearing (10) in a simple manner, a bearing (10) includes an outer ring (12) secured to a securing member, and an inner ring (11) provided on the inside of the outer ring (12) and secured to a shaft that rotates in the circumferential direction relative to the securing member. A thermal flow sensor (14) is provided as a coating on a securing-side surface that includes the outer ring (12), and generates a thermoelectromotive force including information about frictional heat generated with the rotation of the shaft.

A roller assembly includes an outer ring having an interior having an inner surface extending an overall axial length between first and a second axial ends. The inner surface has a radially inward facing bearing surface extending between first and second radially inwardly extending flanges. The roller assembly includes a one piece inner member extending into the interior and having a groove formed therein between third and a fourth axial ends. A retaining ring is positioned in the groove. A first row of first rollers is positioned in the interior and between the retaining ring and the first radially extending flange. A second row of second rollers is positioned in the interior between the retaining ring and the second radially extending flange. An annular seal engages the inner member and has an overall axial width no more than 6% of the length of the outer ring.

A roller assembly includes two outer rings rotatably mounted on a shaft by a respective set of rollers positioned between the shaft and each of the respective one of the outer rings. The shaft has a head flange on one end thereof and a groove formed therein at a distance from the head flange. A retainer ring is positioned in the groove and another retainer ring is secured to the shaft at a distance from the groove. The retaining ring is configured to space the two outer rings apart from one another so that the two outer rings are operable and rotatable independent from one another.