Abstract: The invention relates to a sensor assembly for use in a bearing including at least one bearing cage configured to accommodate at least one rolling element of the bearing, the sensor assembly including a driven oscillator circuit providing a receiver, a function generator and a primary coil, and a passive oscillator circuit including a temperature dependent capacitance. The passive oscillator circuit is configured to be attached to the bearing cage such that the inductor coil interacts with the primary coil of the driven oscillator circuit. It is proposed that a directional coupler is provided in a signal line between a function generator and the primary coil of the system, wherein the directional coupler is arranged to output a signal reflected from the passive resonant circuit in the cage toward a tuned receiver receiving the feedback of the signals generated by the function generator.

Abstract: The present invention relates to a linear electro-mechanical actuator for transferring a rotational motion to a linear motion. The actuator provides a piston having an outer load-carrying surface and being at least partly arranged inside a housing. The actuator further provides a transmission module adapted to transfer a rotational motion generated by a motor to a linear motion of the piston. The actuator includes a separating member and a lubricating member having a porous polymeric matrix and a lubricating material, the separating member and the load-carrying member being arranged adjacent to each other. Thereby, the actuator allows for lubrication of at least a portion of the outer load-carrying surface of the piston by the lubricating material upon movement of the piston. For instance, the linear electro-mechanical actuator may not require, or may at least minimize, the need of relubrication.

Abstract: An electronic magnetic bearing controller for controlling the position of a rotor of an electrical machine supported by an active magnetic bearing the position of which being measured by at least one inductive position sensor having an inductive coil, comprising an automatic reactive power compensation device for automatically compensating the reactive power consumed by the inductive position sensor.

Abstract: An alignment apparatus (the tool) of the present invention includes a pair of bracket devices for rigidly holding shafts. As the shafts are secured to the bracket devices with chains, sensors of one of the bracket devices are exposed to an extension beam of the other bracket device thereby defining gaps or distances between the extension beam and the sensors. If offset is determined between the distances because one shaft is misaligned relative the other shaft, the sensors send signal to a mobile device, thereby informing a user about misalignment between the shafts.

Abstract: A suspension thrust bearing provides a bearing with annular upper part and annular lower part. The lower part provides an axial hub, an outwardly projected radial flange extending from the axial hub, and a curved connecting portion between the axial hub and radial flange. The lower part provides an exterior support surface that axially supports an upper end of a suspension spring by a damping device made from resilient material. The exterior support surface provides at least one longitudinal groove, the damping device including an interior surface contacting the exterior support surface and including a complementary shape to mate with the groove. The groove extends along the connecting portion, disposed in a recessed portion between two longitudinal side walls, a first groove end on or directed towards the hub, and a second groove end on or directed towards the flange, the second groove end being a transverse wall.

Abstract: A cage for a ball bearing is provided with a wire having a first group of heels spaced apart in the circumferential direction and form a first discontinuous ring, a second group of heels spaced apart in the circumferential direction and form a second discontinuous ring, and a plurality of connecting portions extending between one of the heels of the first group and second group. The connecting portions and the heels of the first group and/or the second group delimit a plurality of spaces each intended to receive a ball of the bearing. The cage also provides at least one interposed part disposed inside each space and is provided with a body for accommodating a ball and coupling means for fastening the body to at least one of the connecting portions of the wire. Each of the bodies of the interposed parts fully positioned in the circumferential direction.

Abstract: A steel alloy comprising from: (a) 0.6 to 0.9 wt. % carbon, (b) 0.1 to 0.5 wt. % silicon, (c) 0.1 to 1.5 wt. % manganese, (d) 1.5 to 2.0 wt. % chromium, (e) 0.2 to 0.6 wt. % molybdenum, and up to: (f) 0.25 wt. % nickel, (g) 0.3 wt. % copper, (h) 0.2 wt. % vanadium, (i) 0.2 wt. % cobalt, (j) 0.2 wt. % aluminum, (k) 0.1 wt. % niobium, (l) 0.2 wt. % tantalum, (m) 0.05 wt. % phosphorous, (n) 0.03 wt. % sulphur, (o) 0.075 wt. % tin, (p) 0.075 wt. % antimony, (q) 0.075 wt. % arsenic, (r) 0.01 wt. % lead, (s) 350 ppm nitrogen, (t) 100 ppm oxygen, (u) 50 ppm calcium, (v) 50 ppm boron, (w) 50 ppm titanium, the balance iron, including any other unavoidable impurities, wherein the alloy comprises molybdenum and silicon in a weight ratio of 0.4?Mo/Si?6.0 and comprises molybdenum and chromium in a weight ratio of 0.1?Mo/Cr?0.4.

Abstract: A method for lubricating a rolling element bearing, the method comprising a step of providing a bearing cage for retaining rolling elements when the bearing cage is in use, the bearing cage having at least one first ring structure to which at least one first cage bar is connected. The at least one first cage bar is constructed so that a diameter of the bearing cage is largest at one of a point or a region along the length of the at least one first cage bar so as to improve lubricant flow towards the rotational center of rolling elements when the bearing cage is in use.

Abstract: The present invention relates to a magnet-integrated-type torque angle sensor module and, more particularly, to a torque angle sensor module that integrates magnets used for detecting steering direction, steering angle, torque, and steering speed and simplifies component configuration, capable of minimizing the rate of defects during assembly, improving disassembling ability, and inducing performance stabilization.

Abstract: A sealing assembly insertable between a stationary outer ring and a rotating inner ring of a bearing or hub bearing unit, having a first C-shaped shield supported by the inner ring and a second L-shaped shield supported by the outer ring. The first shield has a first annular sealing element having a first annular lip that extends axially cantilevered from the flange portion of the second shield in a position facing a radially outer sleeve shaped portion of the first shield and a second annular lip, elastically deformable, arranged radially on the inside of the first lip and which cooperates in contact with a radially inner sleeve shaped portion of the first shield, which carries a second sealing element having a third annular lip, which extends axially cantilevered from the first shield and towards the second shield and which is radially interposed between the first and the second lip.

Abstract: The disclosure herein relates to a partial discharge detection board comprising a high voltage resistor divider. The high voltage resistor divider can reduce a voltage peak of an impulse surge generated by a surge board. The high voltage resistor divider can also include a high side with a first resistance and a low side with a second resistance.

Abstract: An apparatus for detecting irregularities in a rotation of roller bodies in a roller bearing, the apparatus comprising a measurement module and a processor module. The measurement module is operable to provide a deformation signal indicative of a deformation of a surface region of a bearing ring of the roller bearing, wherein the deformation is due to the rotation of the roller bodies over the surface region. The processor module is operable to extract one or more signal quantities of interest from the deformation signal and operable to provide statistical information on the one or more extracted signal quantities of interest.

Abstract: A suspension stop device provides an upper contact cap, a lower support cap and at least one bearing arranged between the caps. The upper contact cap provides a centering portion for a damper pad, inside which the pad, which is external to the device, is intended to be mounted. The centering portion extends axially inside a bore in the lower support cap.

Abstract: A coating arrangement has the following characteristics: —particles having a scratch hardness greater than or equal to 9 and a median grain size that can be determined, —a coating having a thickness equaling approximately half the median grain size, —a coating carrier with a surface comprising recesses, wherein a portion greater than 85% of the recesses compared to a surface surrounding the associated recess is designed with a depth smaller than approximately 10% and/or a opening width smaller than or equal to approximately 15% of the coating thickness, and —the coating is applied to the surface of the coating carrier and surrounds the particles at least at a lower region oriented toward the coating carrier.

Abstract: The invention relates to a slewing bearing that includes an inner ring, an outer ring, at least one row of rolling elements arranged between the rings in order to form an axial thrust that transmits axial forces, and at least one row of rolling elements arranged between the rings in order to form a radial thrust which can transmit radial forces. The slewing bearing further includes a sensing probe for detecting a relative displacement between the inner ring and outer ring and/or cracks, the inner ring having a through hole in which the sensing probe arranged. The through hole has a probe positioning element provided with a positioning portion and a support portion on which the sensing probe is supported so as to face the outer ring.

Abstract: A temperature compensation ring configured to compensate for a temperature-dependent distance change between two components includes a base body made from an elastic material, and at least a section of at least one surface of the base body is configured to reduce a friction in the axial direction between the temperature compensation ring and an abutment surface, by, for example, being coated with a friction reducing coating and/or by including one or more grooves for receiving a lubricant.

Abstract: A device for holding a workpiece that includes a first clamping element and at least one second clamping element, wherein the first clamping element and the second clamping element each include on an end side extending in a radial plane a first engagement structure and at least one second engagement structure at different radial positions configured to engage at a first time an end side of a first workpiece having a first diameter and at a second time an end surface of a second workpiece of a second diameter different than the first diameter for holding the workpiece by moving the first clamping element and the second clamping element in the radial direction.

Abstract: A spacer device for roller elements of a toroidal roller bearing includes an inner ring and an outer ring. The toroidal roller bearing allows for axial and angular displacement between the inner and outer rings. The spacer device comprises a first roller element-contacting surface and a second roller element-contacting surface on opposite sides thereof. First and second roller-contacting surfaces are arranged to separate two adjacent roller elements in a tangential direction of the toroidal roller bearing when the spacer device is in use. Each of the first and second roller element-contacting surfaces has a concave shape adapted to conform to respective convex contacting surfaces of the roller elements. The spacer device comprises end members that have projections that extend outwards from first and second roller-contacting surfaces and which are arranged to extend at least partly over the ends of two adjacent roller elements when the spacer device is in use.

Abstract: A sealing system for sealing a shaft located under water includes a bush mountable on the shaft and fixed to the shaft, a housing fixed with respect to the bush and surrounding a first portion of the bush, a lubricant chamber and an air chamber in the housing and open to the bush, the lubricant chamber being sealed with respect to the air chamber by a seal ring, a mechanical seal outside the housing and surrounding a second portion of the bush, an air supply line and an air discharge line connected to the air chamber, and a quantity of lubricating oil in the lubricant chamber, the lubricating oil being in fluid communication with a lubricant tank via at least one oil line, wherein an air pressure in the air chamber is greater than an oil pressure in the lubricant chamber.