Provided is a pinion bearing that may be coupled to a pinion shaft of a vehicle. The pinion bearing may include at least one inner ring mounted on and coupled to a pinion shaft; an outer ring positioned outside the inner ring in a radial direction; and a plurality of rolling elements configured to rotatably support the inner ring relative to the outer ring. The outer ring may i a flange portion formed to extend outward in the radial direction, a first extension portion formed to extend from the flange portion toward a differential gear unit, and a second extension portion formed to extend from the flange portion toward an opposite side of the differential gear unit, and a heat dissipation fin(s) may be formed on the second extension portion to protrude outward in the radial direction.

Disclosed is a drive train having a drive shaft of a driven machine, a drive machine, and a differential transmission with three drives or outputs, wherein one output can be connected to the drive shaft, a first drive can be connected to the drive machine, and a second drive can be connected to a differential drive. The differential drive is connected to the second drive via an adjusting gear system with gears, and the drive shaft is connected to the output via an output gear system with gears. Viewed from the drive machine in the direction of the axis of the drive shaft, the gears of the adjusting gear system project at least as far as into the area of the gears of the output gear system.

A packaged bearing unit is disclosed including an outer surface for receiving an aircraft landing gear wheel and an inner surface for receiving an axle. The unit may include first and second spaced-apart sets of tapered roller bearings, held between inner and outer raceways. There may be a bearing setting spacer which can be used when setting and pre-loading the bearings. The bearing unit may be a sealed unit which includes a pre-set amount of lubricant (grease) for lubricating the bearings. One or more sensors may be retained in a void between the sets of bearings.

The present invention provides an abnormality detector for a rolling bearing including an outer race, and an inner race. The abnormality detector includes a filter configured to prevent metal pieces contained in lubricating oil flowing through the bearing space between the outer and inner races from passing through the filter, while allowing the lubricating oil to pass through the filter so as to flow to the outside space of the bearing space; an electric circuit including a pair of permanent magnets mounted, as a pair of electrodes, to the filter so as to be spaced apart from each other, and lines extending from the respective electrodes to a power source; and an output detector configured to detect a change in electrical output from the electric circuit when metal pieces adhere between the pair of permanent magnets, thereby detecting the state of metal pieces contained in the lubricating oil.

A tapered roller bearing includes inner and outer rings including raceway surfaces having tapered shapes on their outer and inner peripheries, respectively, tapered rollers between the raceway surfaces, and a retainer configured to receive the tapered rollers. At least the raceway surface of the inner ring includes cut crowning of a complex curve including a center curve and end portion curves formed on both sides of the center curve each have a curvature radius smaller than a curvature radius of the center curve. The tapered rollers each have a rolling surface including a straight portion and logarithmic crowning portions formed on both sides of the straight portion. When the raceway surface of the inner ring has an effective raceway surface width represented by LG, and the straight portion of the rolling surface of the tapered roller has a width represented by LW1, 0.7LW1/LG<0.95 is satisfied.

The roller insertion groove of the inner ring of a crossed roller bearing is provided with an outer circumferential surface-side groove opening that is exposed to an inner rings-side V-groove. The groove opening is defined by circumferential direction opening edge that extends in the circumferential direction along the inner ring-side V-groove and side opening edges that extend from both ends of the circumferential direction opening to the ring-shaped end face of the inner ring. Concentration of stress occurs in the corners between the circumferential direction opening edges and the side opening edges. The circumferential direction opening edge is formed so as not to coincide with the minimum outer diameter section of the inner ring-side V-groove.

A drive module (1, 1a) includes an axle casing (2) and a shaft (3) rotatably mounted in an interior space (11) of the axle casing (2). Two bearing units (6, 6a) lie opposite each other and are secured in the axle casing (2) in an axial direction. Each bearing unit (6, 6a) includes an inner bearing ring (7, 7a) fixedly connected to the shaft (3), an outer bearing ring (8, 8a) fixedly connected to the axle casing (2), and rolling elements (9, 9a) arranged between the inner bearing ring (7, 7a) and the outer bearing ring (8, 8a). A lubricating fluid is present at least in the interior space (11). The lubricating fluid forming a fluid reservoir at a bottom of the interior space (11). The axle casing (2) includes a fluid opening extending, in each case, from the interior space (11) to a respective bearing unit (6, 6a) for conducting the lubricating fluid to the rolling elements (9, 9a). At least one conduction device is fluidically connected to the fluid reservoir and is configured for conducting the lubricating fluid the interior space (11) to the respective fluid opening.

A drill drive for a drilling rig includes a motor, by which a drive shaft is rotationally driven which is supported in a rotatable manner in a housing with a bearing arrangement having at least a radial bearing, a first axial bearing and a second axial bearing. On the first axial bearing a first force measuring device is arranged for determining a first axial force on the first axial bearing and on the second axial bearing a second force measuring device is arranged for determining a second axial force on the second axial bearing. A drilling rig, in particular for oil or gas drilling, with a drill mast, along which a drill string with a drilling tool is arranged, wherein on the drill mast a drill drive according to the invention is supported in a displaceable manner for rotationally driving the drill string.

A pitch bearing for coupling a rotor blade to a hub of a wind turbine includes an outer race configured to be coupled to the hub, an inner race rotatable relative to the outer race and configured to be coupled to the rotor blade, and a first plurality of line contact rolling elements. The outer race defines a first outer raceway wall and the inner race defines a first inner raceway wall. The first plurality of line contact rolling elements is disposed between the first inner and outer raceway walls. Each of the plurality of line contact rolling elements defines a predetermined contact angle. The predetermined contact angle is defined as an angle between a reference line extending perpendicular to a longitudinal axis of one of the plurality of line contact rolling elements and a reference line extending parallel to a horizontal plane of the pitch bearing. Further, the predetermined contact angle includes angles between 0 degrees () and 90.

A race of a bearing assembly is provided. The race includes an exterior facing surface having front and rear faces and serrations extending in an axial direction between the front and rear faces and protruding outwardly from the exterior facing surface.