A bearing assembly is disclosed herein. The bearing assembly includes an outer bearing ring including at least one first connection element. The assembly also includes a cap defining an axial portion and at least one radial portion defining a cavity configured to receive the outer bearing ring. The cap includes at least one second connection element configured to mate with the at least one first connection element. The cap is formed from an electrically insulating material to prevent EDM.

A bearing unit for a marble cutting machine, comprising a radially outer ring, rotatable about an axis of rotation (X) of the bearing unit and provided with a radially outer flange portion; a stationary radially inner ring having a raceway and a through hole; a row of rolling bodies interposed between the radially outer ring and the radially inner ring; a seat formed in the radially inner ring and shaped as a portion of a circular crown; and a sensor fit in the seat, wherein a ratio between an internal diameter (D) of the through hole and an axial thickness (t) of the radially inner ring is between 6.7 and 11.1.

A bearing unit for a marble cutting machine has a radially outer ring, rotatable with respect to an axis of rotation (X) and is provided with a radially outer flange portion. Additionally, the bearing unit is provided with a stationary radially inner ring with a through hole in which the ratio between a dimension of an internal diameter (D) of the through hole and a dimension of the axial thickness (T) of the radially inner ring is between about 6.7 and about 11.1. A row of rolling bodies is interposed between the radially outer ring and the radially inner ring. A sealing shield is made of composite material and interposed between the radially inner ring and the radially outer ring, rotatable with respect to the rotation axis (X) and steadily anchored to the radially outer ring. The shield is provided with a sensor molded in it.

A system for determining at least one defect of a bearing providing a first ring and a second ring capable of rotating concentrically relative to one another, first and second distance sensors mounted on the first ring of the bearing for measuring first and second differential distances between the first ring and the second ring, a storage device for storing each measured differential distance, a device configured to determine a first temporal profile of a radial relative displacement between the first and second rings, and a second temporal profile of an axial relative displacement between the first and second rings according to the stored measured differential distances in the storage device, and a device that identifies a defect of the bearing from the temporal profile.

A system for determining at least one defect of a bearing providing a first ring and a second ring capable of rotating concentrically relative to one another, first and second distance sensors mounted on the first ring of the bearing for measuring first and second differential distances between the first ring and the second ring, a storage device for storing each measured differential distance, a device configured to determine a first temporal profile of a radial relative displacement between the first and second rings, and a second temporal profile of an axial relative displacement between the first and second rings according to the stored measured differential distances in the storage device, and a device that identifies a defect of the bearing from the temporal profile.

A rolling bearing assembly includes an inner ring supported by a shaft or formed by a surface of the shaft, an outer ring supported in a housing or formed by a surface of the housing, a plurality of rolling elements disposed between the inner ring and the outer ring, and at least one distance sensor configured to measure a distance between the shaft and the housing in order to detect wear of the rolling bearing.

A rolling bearing assembly includes an inner ring supported by a shaft or formed by a surface of the shaft, an outer ring supported in a housing or formed by a surface of the housing, a plurality of rolling elements disposed between the inner ring and the outer ring, and at least one distance sensor configured to measure a distance between the shaft and the housing in order to detect wear of the rolling bearing.

Provided is a method and a system capable of detecting a fatigue state before damage to a rolling bearing component occurs, and capable of performing diagnosis of the fatigue state without having to disassemble the rolling bearing.

A magnetic sensor arranged close to a component of a rolling machine element measures magnetic flux density in the axial direction and/or radial direction of the component, then the amount of change in magnetic flux density is calculated based on a reference magnetic flux density corresponding to the magnetic flux density before the start of use of the component, and the progression of fatigue of the rolling machine element is determined from the amount of change.

According to the method of the invention, a lubricant is supplied incrementally to a rotary bearing while the bearing is in operation rotating at a rotational speed. The lubricant is supplied in consecutive steps so that at each step a portion of a prescribed amount of lubricant is supplied, followed each time by an ultrasound measurement. A first ultrasound measurement is performed before the first supply step, and starting from the second supply step, each measurement result is compared at least to the previous result, in order to evaluate the bearing condition and decide on that basis whether to continue the sequence or not. Stopping the sequence is decided when the lubrication of the bearing is assessed as successful, a lubrication failure or over-lubrication. The invention is equally related to a system for lubricating one or more bearings, applying the method of the invention to each of said bearings.

Sensorised wheel hub unit and a method for detecting, in real time, forces and moments applied to an outer ring of the wheel hub unit in which piezoresistive ceramic plates are made of one piece with welded metal plates housed within respective recesses formed in an outer surface of the outer ring over respective races for rolling elements that there is a gap between the plates and a base wall of each recess; the temperature of the outer ring and the amplitude and frequency of first electrical signals (S1) associated with the sensors relating to the same race are analysed to determine a frequency value equal to the frequency of the first signal having the maximum amplitude and as many amplitude values (D1-Dn) as there are sensors associated with that race and each equal to the maximum amplitude of the first signal from each sensor, corrected according to temperature.