The disclosure relates to a method for producing an angular contact roller bearing with unilaterally delimiting rims. The disclosure also relates to multiple variants of a device for assembling the angular contact roller bearing. The method may include conically forming an inner raceway into a cylindrical section of an outer shell surface of an inner bearing ring such that the inner raceway is inclined relative to the bearing axis of rotation (AL) and is delimited at one end by a rim, conically forming an outer raceway into a cylindrical section of an inner shell surface of an outer bearing ring such that the outer raceway is inclined relative to the bearing axis of rotation (AL) and is delimited at one end by a rim, and assembling the inner and outer bearing rings and a multiplicity of roller-type rolling bodies, which roll on the raceways of said bearing rings, in accordance with an eccentric assembly method.

A double-row self-aligning roller bearing, which is suitable for receiving an axial load and a radial load, and loads having different magnitudes acting on rollers in two rows, and achieves sufficient load capacity for the rollers that receive axial load within the constraint of dimensional standards, is provided. The double-row self-aligning roller bearing includes inner and outer rings; and rollers in two rows arranged in a bearing width direction interposed between the inner and outer rings and having lengths different from each other. The roller has an outer peripheral surface of a cross-sectional shape along a raceway surface of the outer ring having a spherical shape. Length of the longer rollers is equal to or greater than 39% of the bearing width. A ratio of contact angle of the shorter rollers and contact angle of the longer rollers is within a range of 1:4 to 1:2.

A bearing includes an inner ring having an outer surface and a cage having both an inner surface and an outer surface. The cage inner surface is positioned to be in opposition to the inner ring outer surface. The bearing further includes an outer ring having both an inner surface and an outer surface. The outer ring inner surface is positioned to be in opposition to the cage outer surface. One or more of the inner ring outer surface, the cage inner surface, the cage outer surface, and the outer ring inner surface defines a non-circular circumferential profile.

The present invention relates to a bearing arrangement (104) connectable to a shaft (102), the bearing arrangement comprising a bearing (105, 105) comprising a plurality of rolling elements (110) arranged to rotate relative to an inner raceway (302) for said bearing arrangement; and a ring shaped contact element (114, 114) having an extension in an axial direction thereof, the ring shaped contact element further comprising a first contact surface (402) adapted to face the plurality of rolling elements, wherein an inner diameter of the ring shaped contact element at the axial position of the first contact surface has a larger diameter in comparison to a diameter (412) of the inner raceway, such that a continuous radial gap (414) is provided in the circumferential direction between the ring shaped contact element and the inner raceway when the bearing arrangement is connected to the shaft, wherein the radial gap (414) is arranged to be provided in fluid communication with a lubricating flow channel (306) of the shaft when the bearing arrangement is connected to the shaft.

A raceway surface (3a) of an outer ring (3) of a tapered roller bearing (1) includes a composite crowning surface. The composite crowning surface includes a center curve (3a1), which is formed at a center portion in a generating-line direction, and end portion curves (3a2 and 3a3), which are formed on both sides of the center curve (3a1) in the generating-line direction. The raceway surface (3a) of the outer ring (3) is entirely subjected to superfinishing. Each of a ratio (R.sub.2/R.sub.1) of a curvature radius (R.sub.2) of the end portion curve (3a2) to a curvature radius (R.sub.1) of the center curve (3a1) and a ratio (R.sub.3/R.sub.1) of a curvature radius (R.sub.3) of the end portion curve (3a3) to the curvature radius (R.sub.1) is set to 0.02 or more. Each of drop amounts of the end portion curves (3a2 and 3a3) is set to 0.07 mm or less.

Angular contact roller bearings are disclosed. The bearing may include an inner bearing ring with an inner raceway, which is arranged on the outer shell surface of said inner bearing ring so as to be oblique with respect to the bearing axis of rotation (AL), and comprising a rim which delimits said raceway at its smallest diameter. An outer bearing ring has an outer raceway, which is arranged on the inner shell surface of said outer bearing ring likewise so as to be oblique with respect to the bearing axis of rotation (AL), and a rim which delimits said raceway at its greatest diameter. A multiplicity of roller-type rolling bodies are arranged between the bearing rings and roll on the raceways of said bearing rings and are held with uniform spacings to one another in a circumferential direction by means of a bearing cage. A tangent to the outer shell surface of the inner bearing ring and a tangent to the inner shell surface of the outer bearing ring are, at least in the region of the raceways, of planar form so as to run in opposite directions obliquely with respect to the bearing axis of rotation (AL). The raceways of the two bearing rings are each formed in conical fashion into said shell surfaces and the rims which are thus formed and which delimit the raceways in each case on one side are thus each formed integrally with the bearing rings.

A tapered roller bearing includes inner and outer rings having tapered raceway surfaces. The inner ring also includes large-collar and small-collar surfaces respectively on large-diameter and small-diameter sides of its raceway surface. A plurality of tapered rollers are arrayed between the raceway surfaces. Each of the tapered rollers has a large end surface that contacts and is guided by the large-collar surface. A set curvature radius (R) of the large end surface of each of the tapered rollers and a base curvature radius (R.sub.BASE) from a vertex of a cone angle of each of the tapered rollers to the large-collar surface has a ratio R/R.sub.BASE in a range of 0.75 to 0.87, and when R.sub.ACTUAL represents an actual curvature radius of the large end surface, a ratio R.sub.ACTUAL/R is equal to or larger than 0.5.

A method of reducing loads in a rotor assembly during an imbalance condition, a shape memory alloy recoupler device, and a hybrid bearing support system are provided. The hybrid bearing support system includes a shaft extension fixedly coupled to a rotatable member at a radially inner end of the shaft extension, a radially outer end of said shaft extension fixedly coupled to a rotatable race of a bearing supporting the rotatable member, and a recoupler device formed of a shape memory alloy (SMA) material coupled in parallel with at least a portion of said shaft extension between the radially inner end and the radially outer end.

Tapered roller bearings and methods of producing the same are disclosed. One method is for producing an inner ring for a tapered roller bearing in which the inner ring comprises a raceway portion and a fixed edge portion. The method may include providing an inner ring blank and an unfinished fixed edge portion. The inner ring blank may include an unfinished raceway portion and the unfinished fixed edge portion may have a larger outside diameter than the unfinished raceway portion. The inner ring blank may have a through-opening. The inner ring blank may be formed into the inner ring by extrusion in a main forming step, the unfinished fixed edge portion being transformed into the fixed edge portion and the unfinished raceway portion being transformed into the raceway portion. The inner ring may be formed in its final contour without any cutting.

A thrust bearing cage including an improved lubrication feature is disclosed. The thrust bearing cage includes a first rim and a second rim with a plurality of crossbars extending therebetween to define rolling element pockets. Each crossbar of the plurality of crossbars includes: a first radial flange extending from the first rim; a second radial flange extending from the second rim; and a medial radial flange connecting the first radial flange and the second radial flange. The medial radial flange is axially offset from the first radial flange and the second radial flange. At least one of the first radial flange, the medial radial flange, or the second radial flange includes a protrusion defining at least one ramped surface. The ramped surface creates a hydrodynamic effect, which guides the thrust bearing cage away from an adjacent surface, and ensures that a lubricated state is maintained.