Dynamic pressure bearing (10), including: a green compact (10), as a base material, of raw material powder including metal powder capable of forming an oxide coating; and dynamic pressure generating portions (A1 and A2) formed through die molding on an inner peripheral surface (8a) forming a radial bearing gap with an outer peripheral surface (2a1) of a shaft to be supported, that is, a shaft member (2). An oxide coating (11) is formed between particles of the metal powder by subjecting the green compact (10) to steam treatment, and the dynamic pressure bearing (10) has a radial crushing strength of 150 MPa or more.

A roller of a roller bearing providing a hollow bore in which a load cell is arranged, for measuring a radial load acting on the roller. The load cell is mounted to the roller bore in a non-fixed manner and includes one or more cantilever beams that extend in an axial direction of the roller. A contact element is provided on each cantilever beam. Each element further bears against a surface of the roller bore. At least one sensor is provided on each cantilever beam for measuring bending thereof, due to deflection of the beam in a radial direction perpendicular to the axial direction.

Provided is a sensor-equipped wheel support bearing assembly for rotatably supporting a wheel, including a sensor unit associated with one of outer and inner members that serve as a stationary member. The sensor unit includes a strain generator member that has at least three fixation contact segments fixedly in contact with the stationary member and at least two strain sensors mounted on the strain generator member. A first load estimator is provided to estimate load acting on the bearing assembly, using an average value of output signals of the sensors. A second load estimator is provided to estimate load acting on the bearing assembly, using the average value and an amplitude value of output signals of the sensors. An estimated load provider is provided to sum these outputs from the load estimators in a ratio that depends on wheel rotation speed, for outputting an estimated load.

Stub shaft conveyor pulleys that may be used as a tail pulley and/or head pulley in a belt conveyor system are disclosed. The conveyor pulley includes first and second stub shaft assemblies connected to a center tube. Each stub shaft assembly includes an inner bearing and an outer bearing. In some embodiments, the outer bearing has a diameter larger than the inner bearing. Alternatively or in addition, the inner bearing may be within the center tube and the outer bearing may be exterior to the center tube.

An aircraft engine is described which has: a shaft; a bearing housing extending around the shaft and defining a bearing cavity; a bearing within the bearing cavity and supporting the shaft; a squeeze film damper having an annulus receiving a damping fluid; and a controller. The controller is configured to: operate the squeeze film damper in a first regime in which a speed of the damping fluid in the annulus is less than a speed of sound in the damping fluid; determine that the shaft is subjected to vibrations having an amplitude greater than an amplitude threshold; and upon determining that the amplitude of the vibrations is greater than the amplitude threshold, operate the squeeze film damper in a second regime in which the speed of the damping fluid in the annulus is greater than the speed of sound in the damping fluid.

A linear motion assembly including a component having a longitudinal axis and adapted to translate along the longitudinal axis, and a bearing comprising a spiral body including a substrate and a low friction material, wherein the bearing extends around the component and provides a low friction interface for translation of the component, and wherein the bearing is adapted to prevent longitudinal translation of the component in a locked condition and permit longitudinal translation of the component in an unlocked condition. In an embodiment, the bearing is adapted to transition between the locked and unlocked conditions upon circumferential translation of an axial end of the spiral body, longitudinal translation of an axial end of the spiral body, or a combination thereof.

A center-bearing assembly includes an annular housing having a circumferential wall with a lip extending radially inward and includes a flange outboard of the circumferential wall. A roller bearing is sized to encircle a vehicle driveshaft and is disposed within the housing between the lip and the flange. An annular retainer is connected to the flange and includes an annular notch configured to shear in response to impact to the driveshaft allowing the bearing to release from the housing.

A center-bearing assembly includes an annular housing having a circumferential wall with a lip extending radially inward and includes a flange outboard of the circumferential wall. A roller bearing is sized to encircle a vehicle driveshaft and is disposed within the housing between the lip and the flange. An annular retainer is connected to the flange and includes an annular notch configured to shear in response to impact to the driveshaft allowing the bearing to release from the housing.

A method for chipless machining of a surface region of a rolling-element bearing ring includes rotating the rolling-element bearing ring relative to a first tool having a first tool tip and a second tool having a second tool tip, positioning the first and second tool tips at start positions at first and second opposite axial ends of the surface region, and moving the first and second tools in opposite axial directions such that the first tool tip follows a first helical or spiral path on the surface region and the second tool tip follows a second helical or spiral path on the surface region, the first and second paths crossing at multiple points within an overlap region located between axial ends of the surface regions.

The present invention defines a roller of a roller bearing providing a hollow bore in which a load cell is arranged, for measuring a radial load acting on the roller. The load cell is mounted to the roller bore in a non-fixed manner and includes one or more cantilever beams that extend in an axial direction of the roller. A contact element is provided on each cantilever beam. Each element further bears against a surface of the roller bore. At least one sensor is provided on each cantilever beam for measuring bending thereof, due to deflection of the beam in a radial direction perpendicular to the axial direction.