Provided is a sliding member for a thrust bearing. The sliding member includes a back-metal layer and a sliding layer, and has a partially annular shape. The sliding layer includes a synthetic resin and has a sliding surface. In a center line region of the sliding layer, the sliding layer has a linear expansion coefficient KS in a direction parallel to a circumferential direction of the sliding member, a linear expansion coefficient KJ in a direction parallel to a radial direction of the sliding member, and a linear expansion coefficient KT in a direction perpendicular to the sliding surface, and the linear expansion coefficients KS, KJ, and KT satisfy the following relations (1) and (2): Relation (1): 1.1≤KS/KJ≤2; and Relation (2): 1.3≤KT/{(KS+KJ)/2}≤2.5.

A curable composite bush for an aircraft joint comprising a generally hollow cylindrical body formed from a matrix material impregnated with a reinforcement material substantially composed of fibers, the fibers being oriented in a generally circumferential direction about a longitudinal axis of the bush. The body may define a plurality of corrugations extending between an inner and an outer diameter of the bush to improve the compressibility of the bush in a direction substantially collinear to a longitudinal axis of the bush.

A flexible composite driveshaft is formed by modifying the shape of a preliminary composite driveshaft. A fiber tape is applied to a temporary mandrel using automated fiber placement to form a preliminary composite driveshaft having a flexible shaft element with an initial geometry. The temporary mandrel from the preliminary composite driveshaft is removed and the initial geometry of the flexible shaft element is modified to form the flexible composite driveshaft having a flexible shaft element with a final geometry.

A ball bearing is provided which includes a cage made of a resin, and having pockets open to the side surface of the cage on its one axial side. The ball bearing includes an outer bearing ring including a radially protruding engagement portion on the other axial side of the raceway surface. The cage includes engagement portions disposed on the other axial side of the pockets so as to be engageable with the engagement portion of the outer bearing ring in the other axial direction. The relationship between the axial depth H of each pocket and the diameter d of the ball is set at 0.15d≤H≤0.65d. By setting the above relationship in this way, it is possible to reduce the deformation of the cage due to a centrifugal force, and to reduce the shear resistance of lubricating oil between the pockets and the balls.

A shaft assembly includes a composite tube and an impact shield. The composite tube has a longitudinal centerline axis and the impact shield may be disposed around the composite tube and may extend along a length of the composite tube. A gap may be defined between the composite tube and the impact shield. Generally, shaft assembly is configured to inhibit impact damage to the composite tube and/or facilitate visual detection of damage from impacts. The shaft assembly may further include a shock absorbing sleeve disposed in the gap between the composite tube and the impact shield.

A method for assembling a tapered roller bearing includes providing a first rolled-on surface element having a raceway and an axial end surface and mounting a plurality of tapered rollers separated by a plurality of bearing cage segments or by a plurality of roller spacers on the raceway, where each of the plurality of tapered rollers has a frustoconical rolling surface and a circular end surface meeting at a junction. Also placing at least one assembly ring around the plurality of tapered rollers to hold the plurality of tapered rollers against the first rolled-on surface element, and moving a second rolled-on surface element coaxially toward the first rolled-on surface element such that a portion of the second rolled-on surface element contacts the at least one assembly ring and pushes the at least one assembly ring axially off the plurality of tapered rollers.

A composite ring includes a first region including a first polymeric material; a second region including a second polymeric material; and an interfacial region defining a compositional gradient between the first region and the second region; wherein a wear resistance of the first region is different from a wear resistance of the second region. A composite bearing includes a first layer including a first polymeric material and a first filler; a second layer disposed on the first layer, the second layer including a second polymeric material and a second filler; and an interfacial region defining a compositional gradient between the first layer and the second layer, wherein a wear resistance of the first layer is greater than a wear resistance of the second layer, and wherein a mechanical strength of the second layer is greater than a mechanical strength of the first layer.

Provided is a sliding member for a journal bearing. The sliding member includes a back-metal layer and a sliding layer, and has a partially cylindrical shape. The sliding layer includes a synthetic resin and has a sliding surface. The sliding layer has a linear expansion coefficient KS in a direction parallel to a circumferential direction of the sliding member, a linear expansion coefficient KJ in a direction parallel to a center axis direction of the sliding member, and a linear expansion coefficient KT in a direction perpendicular to the sliding surface, and the linear expansion coefficients KS, KJ, and KT satisfy the following relations (1) and (2): Relation (1): 1.1≤KS/KJ≤2; and Relation (2): 1.3≤KT/{(KS+KJ)/2}≤2.5.

Provided is a sliding member for a thrust bearing. The sliding member includes a back-metal layer and a sliding layer, and has a partially annular shape. The sliding layer includes a synthetic resin and has a sliding surface. In a center line region of the sliding layer, the sliding layer has a linear expansion coefficient KS in a direction parallel to a circumferential direction of the sliding member, a linear expansion coefficient KJ in a direction parallel to a radial direction of the sliding member, and a linear expansion coefficient KT in a direction perpendicular to the sliding surface, and the linear expansion coefficients KS, KJ, and KT satisfy the following relations (1) and (2): Relation (1): 1.1≤KS/KJ≤2; and Relation (2): 1.3≤KT/{(KS+KJ)/2}≤2.5.

A socket grommet formed from fiber-reinforced material, for attaching a stud pin with a head portion to a bracket, includes a body member; a first supporting member for supporting one side of the head portion; and second supporting members for supporting another side of the head portion. The first supporting member includes a supporting portion on one side of the body member and connecting portions connecting the supporting portion to the body member. Each connecting portion includes a breaking portion having a thickness less than a remaining portion thereof to be breakable upon a predetermined force. Each second supporting member includes a first connecting piece extending from the body member to another side of the body member, and a second connecting piece extending from the first connecting piece to the one side of the body member and having a supporting piece for contacting the another side of the head portion.