Abstract: The invention provides a load determining system including a sensorized rolling element bearing in a hub unit for wheels. The bearing includes a first ring and a second ring as an inner ring and an outer ring. Either one of the first and second ring may be the inner ring, the other ring being the outer ring. The system includes at least one magnetic sensor attached to the first ring that interacts with a target wheel attached to the second ring. Further, the system includes a signal processing unit configured to receive the magnetic sensor output of the at least one magnetic sensor. The signal processing unit is configured to determine at least axial forces acting on the bearing based on the amplitude of the magnetic sensor output. It is proposed that a pitch wavelength of the target ring is 4 mm or less.

Abstract: A bearing ring having an elongated sensor element that runs along at least a part of a surface of the bearing ring. The connection between the sensor element and the bearing ring is established by a metallic metal material connected by material bonding with the bearing ring as well as with the sensor element. To improve the life of the bearing a sensor element is arranged in a groove that is machined in the bearing ring. The groove extends from the surface of the bearing ring. The metallic material includes or is connected with a flat metallic strip. The flat metallic strip is arranged at or in the surface of the bearing ring and covers the groove.

Abstract: A system for detecting the presence of water in oil, provides a detection head including a gap in which oil to be monitored may be received; at least a first optical fiber having a first end, optically coupled to transmit light across the gap; a micro electro-opto-mechanical (MEOM) device, the MEOM device comprising a photo-emitter and a photo-detector integrated onto a silicon based substrate, the photo-emitter being optically coupled to transmit light into a second end of the first optical fiber and the photo-detector being arranged to receive transmitted light that has been transmitted across the gap; and an electronic interface to the MEOM device for communicating therewith. A processor may be provided to analyze and compare the respective light signals to determine an amount of water present in the oil. By observing variations in absorption, the presence of water can be identified.

Abstract: A bearing ring having an elongated sensor element that runs along at least a part of a surface of the bearing ring. The connection between the sensor element and the bearing ring is established by a metallic metal material connected by material bonding with the bearing ring as well as with the sensor element. To improve the life of the bearing a sensor element is arranged in a groove that is machined in the bearing ring. The groove extends from the surface of the bearing ring. The metallic material includes or is connected with a flat metallic strip. The flat metallic strip is arranged at or in the surface of the bearing ring and covers the groove.

Abstract: A system for detecting the presence of water in oil, provides a detection head including a gap in which oil to be monitored may be received; at least a first optical fiber having a first end, optically coupled to transmit light across the gap; a micro electro-opto-mechanical (MEOM) device, the MEOM device comprising a photo-emitter and a photo-detector integrated onto a silicon based substrate, the photo-emitter being optically coupled to transmit light into a second end of the first optical fiber and the photo-detector being arranged to receive transmitted light that has been transmitted across the gap; and an electronic interface to the MEOM device for communicating therewith. A processor may be provided to analyze and compare the respective light signals to determine an amount of water present in the oil. By observing variations in absorption, the presence of water can be identified.

Abstract: The invention provides a load determining system including a sensorized rolling element bearing in a hub unit for wheels. The bearing includes a first ring and a second ring as an inner ring and an outer ring. Either one of the first and second ring may be the inner ring, the other ring being the outer ring. The system includes at least one magnetic sensor attached to the first ring that interacts with a target wheel attached to the second ring. Further, the system includes a signal processing unit configured to receive the magnetic sensor output of the at least one magnetic sensor. The signal processing unit is configured to determine at least axial forces acting on the bearing based on the amplitude of the magnetic sensor output. It is proposed that a pitch wavelength of the target ring is 4 mm or less.