A clutch device includes a rotor, a first sub-clutch, a second sub-clutch, and a first actuation device. The rotor has a first axial side and a second axial side. The sub-clutches are arranged within the rotor and each include an outer disk carrier with outer disks and an inner disk carrier with an inner disk engaged between two of the outer disks. The first actuating device is for actuating the first sub-clutch or the second sub-clutch. The first actuating device has a first housing. The rotor first axial side is rotatably mounted on the first housing via a first support.

Bearing component providing unaffected material that has a surface, which has been subjected to a hard machining process during where the temperature of the surface did not exceed the austenitizing temperature of the unaffected material. The surface of the bearing component includes a white layer formed during the hard machining process. The white layer has a nano-crystalline microstructure that includes grains having a maximum grain size up to 500 nm. The white layer is located directly adjacent to the unaffected material of the bearing component, where no dark layer is formed during the hard machining process.

An apparatus for determining damage on structural components, for example large rolling bearings, on work machines, in particular construction, material handling and/or conveying machines, including at least one structure-borne sound sensor for detecting structure-borne sound signals of at least one structural component of the work machine, and also an evaluation device for evaluating the detected structure-borne sound signals and determining the damage state on the basis of a comparison of the detected structure-borne sound signals with at least one structure-borne sound signal reference pattern, provision being made of a detection device for detecting state and/or environmental changes relevant to structure-borne sound, and also an adapting device for adapting the at least one structure-borne sound signal reference pattern and/or an evaluation criterion of the evaluation device on the basis of the detected state and/or environmental changes.

An auxiliary power unit equipped wheel support bearing assembly is provided which includes a wheel support bearing assembly and an auxiliary power unit. The auxiliary power unit is of a direct drive design that includes a stator mounted to a stationary ring of the wheel support bearing assembly and a motor rotor mounted to a rotational ring of the wheel support bearing assembly. An entirety of the auxiliary power unit is sized to extend less than an outer peripheral segment of a brake rotor, with the outer peripheral segment defining an area against which a brake caliper is intended to be pushed. The auxiliary power unit is, with respect to an axial direction, sized to be situated between a hub flange of the wheel support bearing assembly and a mounting face of the wheel support bearing assembly for mounting to a vehicle body of a vehicle.

A method for producing bearing components includes providing a first bearing component, a second bearing component, a first production line, and a second production line. The first production line has a first grinding machine, a first honing machine, a first measuring unit, and a first conveyor unit. The second production line has a second grinding machine, a second honing machine, and a second conveyor unit. The method also includes grinding and honing the first bearing component, measuring a first dimension of the first bearing component, grinding and honing the second bearing component, and combining the first bearing component and the second bearing component to form a roller bearing or a slide bearing. The first production line and the second production line are operated in a synchronized manner such that the second grinding machine or the second honing machine is operated under closed-loop control using the first dimension.

A vibration analysis method includes the steps of: inputting damage data of a rolling bearing; calculating, by a dynamics analysis program, a history of an exciting force occurring to the rolling bearing due to damage when a rotational shaft of the rolling bearing is rotated; calculating, by a mode analysis program, a vibration characteristics model of the bearing device; and calculating a vibration waveform at a predetermined position on the bearing device by applying to the vibration characteristics model the history of the exciting force calculated in the step of calculating a history of an exciting force.

A vibration analysis method includes the steps of: inputting damage data of a rolling bearing; calculating, by a dynamics analysis program, a history of an exciting force occurring to the rolling bearing due to damage when a rotational shaft of the rolling bearing is rotated; calculating, by a mode analysis program, a vibration characteristics model of the bearing device; and calculating a vibration waveform at a predetermined position on the bearing device by applying to the vibration characteristics model the history of the exciting force calculated in the step of calculating a history of an exciting force.

A bearing or rolling bearing may comprise a stationary first bearing ring and a second bearing ring that is arranged in a rotatable manner about a longitudinal axis relative to the first bearing ring. The bearing may have a first sensor and a second sensor, which are contactless measuring sensors. The first sensor and the second sensor may each have a sensor surface. The first sensor may be positioned opposite an at least partly circumferential reference edge, and the second sensor may be positioned opposite a reference surface. The first sensor can measure a degree of overlap between the sensor surface of the first sensor and the reference edge. The second sensor can measure a distance, in particular a radial distance, between the sensor surface of the second sensor and the reference surface.

A bearing temperature detector of a railcar bogie includes: a temperature sensor unit passing through an opening of an axle box accommodating a bearing supporting an axle and configured to detect a temperature of an outer ring of the bearing; an elastic body configured to bias the temperature sensor unit toward the outer ring; and a temperature sensor unit support seat including a substrate portion to which the temperature sensor unit is attached via the elastic body, the temperature sensor unit support seat being detachably fixed to the axle box from an outside of the axle box.

A motor assembly includes a shaft, a bearing, at least one fluid channel, a temperature sensor, a lubricant supply pump, and a controller. The bearing defines a bearing interface against which the shaft rotates. The at least one fluid channel is fluidly coupled with the bearing interface. The temperature sensor detects a temperature of the bearing. The lubricant supply pump is fluidly coupled with the at least one fluid channel to transport lubricant from a lubricant supply to the bearing interface via the at least one fluid channel. The controller receives the bearing temperature from the temperature sensor, determines a difference between the bearing temperature and a supply temperature of the lubricant, determines a lubricant flow rate based on the difference, and transmits a control signal to the lubricant supply pump to cause the lubricant supply pump to transport the lubricant to the bearing interface at the lubricant flow rate.