Methods are provided that may include determining one or more of a vibration characteristic or a fluid characteristic of one or more components of a vehicle and determining one or more expected characteristics for the one or more of the vibration characteristic or the fluid characteristic. The methods may also include determining whether the one or more of the vibration characteristic or the fluid characteristic deviates from the one or more expected respective characteristics, and implementing one or more responsive actions in response to determining that the one or more of the vibration characteristic or the fluid characteristic deviates from the one or more expected characteristics.

A nut is used with being fixed to a sensor cap. The sensor cap is attached to an outer ring of a bearing in a wheel bearing device of an automobile. The sensor cap includes a sensor holder for holding a magnetic sensor. The nut is made of steel, and has a screw portion in which a bolt is screwed to attach the magnetic sensor to the sensor cap. A surface of the nut is coated with a zinc-nickel alloy plating layer with a nickel eutectic ratio of 8 to 18%.

The invention provides a sealing assembly that includes an elastic seal lip having a movable part. The seal lip is configured to be attached to a first part of a machine and to be in sliding contact with a second part of the machine. It is proposed that at least one vibration sensor is fixed to the movable part of the seal lip.

A mechanical component for a vehicle, having a measurement region with a surface, and a force sensor is associated with the measurement region for detecting a force to which the component is exposed. The force sensor includes a layer of carbon nanotubes applied to the surface of the measurement region.

A rolling bearing cage includes at least one cage side ring and a plurality of cage bars extending from the cage side ring so as to form a plurality of pockets, each pocket being defined between a separate pair of adjacent bars, for receiving rolling bodies of the rolling bearing. A cage breakage detection unit includes at least one conductive track and a module for wireless cage breakage monitoring. The cage has at least one recess, in which at least a prefabricated part of the cage breakage detection unit is inserted and fixed.

System and method for testing a pump. The testing of the pump includes determining a Mechanical Power Index (MPI) for the pump. The MPI is determined by operating the pump at operating speed for a minimum operating interval. When the pump is stopped under normal operation by the application, the pump speed is continuously monitored. The time when the pump speed decreases to an initial speed close to the operating speed is read as an initial time. When the pump speed decreases to a final pump speed close to the critical speed, the end time is read and the elapsed time is determined as Δt=end time−initial time. The MPI is calculated to be the initial pump speed minus the final pump speed divided by Δt. The MPI can be used during the lifetime of the pump to determine when the pump is deteriorating.

A displacement sensor detects a displacement of a main shaft, thereby detecting a relative displacement between an inner race and an outer race of a bearing. A data processor carries out an abnormality diagnosis for the bearing based on a detected value of the displacement sensor. The data processor carries out an abnormality diagnosis based on a difference between the detected value of the displacement sensor under a first axial load condition for the bearing and the detected value of the displacement sensor under a second axial load condition different from the first axial load condition. Thereby, an abnormality diagnosing apparatus for a rolling bearing is provided, by which a highly accurate abnoiiiiality diagnosis can be implemented even if installation states of a displacement sensor and an object to be measured are changed due to maintenance or repair.

A spindle-bearing protecting device is provided that captures an indication of failure of the spindle bearings of a machine tool and can prolong the time until the main bearing is scorched. A spindle-bearing protecting device for protecting a bearing that supports a spindle to be rotatable, includes: a rotating part provided more to an outer side in an axial direction than the bearing, and having a rotor blade that rotates along with the spindle; a supply part that supplies coolant or lubricant to between the rotor blade and the bearing; a detection unit that detects abnormality of the bearing; and a control unit that controls a supply of coolant or lubricant by way of the supply part and the revolution speed of the spindle, in a case of the detection unit detecting abnormality of the bearing.

A system includes a bearing, a lubricant line, a vessel and a sensor. The lubricant line is designed to introduce lubricant from a bearing gap of the bearing into the vessel. The sensor is designed to measure at least one physical variable of lubricant that is situated in the vessel. The vessel includes an outlet or overflow. The system includes a lubricant sump and a device for introducing lubricant from the sump into the bearing gap of the bearing.

A bearing defect auto-detection system includes a processor to receive condition monitoring data that includes vibration harmonics corresponding to a bearing coupled to a rotatable shaft. The processor performs a pattern sweeping process that sweeps a pattern through both a speed range and a bearing class defect frequency range. In response to the test pattern having at test pattern sideband, the processor also sweeps the test pattern sideband through a sideband range, against the condition monitoring data to determine the pattern's fundamental frequency and sideband frequency. The processor determines a most probably bearing defect type associated with the bearing based on the best match value amongst results associated with the test pattern. The processor also performs a post-sweep logic process that compares a number (N) of most recent results from the pattern sweeping process to at least one conditional test to confirm the most probably bearing defect type is present.