A control method configured to control the preload of a bearing includes estimating the preload on the bearing; comparing the estimated preload with a predetermined acceptance range; and correcting the preload on the bearing when the preload is outside the acceptance range.

The present invention relates to a method for determining a state of a bearing of a three phase electric machine, the electric machine having a rotor, which is supported by the bearing, the electric machine being connected to a three phase inverter for supplying the electric machine with electric power, the three phase inverter being controlled to apply a pulse width modulation with a predefined scheme to create three phase currents, the method comprises: determining a first phase current provided to the electric machine; determining a second phase current provided to the electric machine, the second phase current being different to the first phase current; determining the power spectral density of the park's vector based on the first phase current and the second phase current; determining an amplitude of the power at a predefined frequency of the power spectral density, wherein the predefined frequency depends on the rotational speed of the rotor and the scheme of the pulse width modulation; comparing the amplitude of the power at the predefined frequency with a predefined power value; and determining, based on the comparison, whether a failure of the bearing has occurred or the bearing is degraded.

Methods and systems for an axle are described. The axle may be a steering axle that is coupled to wheels that may move to change a steering angle of a vehicle. In one example, the axle includes two bearings that are arranged similarly so as to reduce a height of an axle. The two bearings may be tapered wheel bearings so that vertical and lateral wheel loads may be supported via an actual total of two bearings per wheel.

A method for manufacturing a sensorized bearing ring includes the steps of: providing a metallic ring member, applying a sensor member on the metallic ring member, and applying a raceway layer onto the metallic ring member and the sensor member by use of a metallic wire Directed Energy Deposition (DED) operation and/or a metallic powder DED operation.

The invention relates to a gear motor for a motor vehicle wiper system, comprising a direct current electric motor, which in particular is brushless, the electric motor (2) comprising a stator (4) and a rotor (5), the stator (4) comprising a plurality of coils (6) for electromagnetic excitation of the rotor (5), and the rotor (5) comprising a magnet which is fitted in order to be driven with a movement of rotation around an axis of rotation, the gear motor (1) also comprising a rotation shaft (8), known as the motor shaft, which is configured to be rotated by the rotor (4), the gear motor (1) comprising a bearing (20) for guiding in rotation of the motor shaft (8), and a brace (25) for axial blocking of the bearing (20) added onto the motor shaft, the brace (25) being secured on the motor shaft (8).

A kit including a plurality of modules which can be integrated in a bearing installation space is disclosed. The modules include a plurality of supply management modules for supplying bearing components, a plurality of functional modules for measuring bearing state variables and/or for triggering and/or activating specified events under specified conditions, and a plurality of infrastructure modules for implementing communication tasks and/or for saving and processing specified and/or recorded data. A bearing arrangement having a bearing and a plurality of modules which can be connected to a common connection medium is also disclosed, wherein the modules are components of the kit.

A retainerless rolling element bearing (20) is disclosed as including an inner raceway (22), an outer raceway (24), a plurality of first type of rolling elements (26) and a plurality of second type of rolling elements (28) alternately arranged adjacent to each other and between the inner raceway and the outer raceway, a surface of the first type of rolling elements having a higher contact angle, a lower contact angle hysteresis and a smaller magnitude of surface energy than a surface of the second type of rolling elements.

An all-terrain vehicle includes a frame; a cab located in the middle of the frame; a front axle located in front of the cab; a power assembly located behind the cab; and a transmission structure coupled to the front axle and the power assembly, and comprising a front transmission shaft, a rear transmission shaft, and an intermediate transmission component, the intermediate transmission component having a first end coupled to the front transmission shaft and a second end coupled to the rear transmission shaft; an end, away from the intermediate transmission component, of the front transmission shaft being coupled to the front axle, and an end, away from the intermediate transmission component, of the rear transmission shaft being coupled to the power assembly; and a connection point between the intermediate transmission component and the front transmission shaft being located in front of the cab.

A bearing assembly having an inner race ring (14) that defines an inner raceway and an outer race ring that defines an outer raceway on which the plurality of rolling elements (22) roll. The bearing raceways are machined using surface finishing operations to create preferred surface profiles and textures for improving lubrication performance. The profile of the raceway is initially created using a first grinding process to form a rough surface profile including a rough central band (34) and rough recessed side bands (38). A second grinding process is used to smooth the central band. This raceway surface profile increases lubrication performance.

A bearing assembly having an inner race ring (14) that defines an inner raceway and an outer race ring that defines an outer raceway on which the plurality of rolling elements (22) roll. The bearing raceways are machined using surface finishing operations to create preferred surface profiles and textures for improving lubrication performance. The profile of the raceway is initially created using a first grinding process to form a rough surface profile including a rough central band (34) and rough recessed side bands (38). A second grinding process is used to smooth the central band. This raceway surface profile increases lubrication performance.